Version 1.71 + comments

Extracted tab rendering code into a RenderTextEllipsis() function.

.editorconfig

@@ -0,0 +1,20 @@
+# editorconfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Default settings:
+# Use 4 spaces as indentation
+[*]
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[imstb_*]
+indent_size = 3
+trim_trailing_whitespace = false
+
+[Makefile]
+indent_style = tab
+indent_size = 4

.github/CONTRIBUTING.md

@@ -1,42 +0,0 @@
-## How to create an Issue
-
-Hello! 
-
-You may use the Issue Tracker to submit bug reports, feature requests or suggestions. You may ask for help or advice as well. However please read this wall of text before doing so. The amount of incomplete or ambiguous requests due to people not following those guidelines is often overwhelming. Please do your best to clarify your request. Thank you!
-
-**IF YOU ARE HAVING AN ISSUE COMPILING/LINKING/RUNNING/DISPLAYING/ADDING FONTS/WIRING INPUTS**
-- Please post on the "Getting Started" Discourse forum: https://discourse.dearimgui.org/c/getting-started
-
-**Prerequisites for new users of dear imgui:**
-- Please read the FAQ in imgui.cpp.
-- Please read misc/fonts/README.txt if your question relates to fonts or text.
-- Please run ImGui::ShowDemoWindow() to explore the demo and its sources.
-- Please use the Search function of GitHub to look for similar issues. You may also browse issues by tags.
-- Please use the Search function of your IDE to search in the code for comments related to your situation.
-- If you get a assert, use a debugger to locate the line triggering it and read the comments around the assert.
-
-**Guidelines to report an issue or ask a question:**
-- Please provide your imgui version number.
-- Please state if you have made substantial modifications to your copy of imgui. 
-- Try to be explicit with your expectations and what you have tried. What you have in mind or in your code is not obvious to other people.
-- If you are discussing an assert or a crash, please provide a debugger callstack. Never state "it crashes" without additional information. If you don't know how to use a debugger and retrieve a callstack, learning about it will be useful.
-- Please make sure that your compilation settings have asserts enabled. Calls to IM_ASSERT() are scattered in the code to help catch common issues. By default IM_ASSERT() calls the standard assert() function. To verify that your asserts are enabled, add the line `IM_ASSERT(false);` in your main() function. Your application should display an error message and abort. If your application report an error, it means that your asserts are disabled. Please make sure they are enabled.
-- When discussing issues related to rendering or inputs, please state the OS/back-end/renderer you are using. Please state if you are using a vanilla copy of the example back-ends (imgui_impl_XXX files), or a modified one, or if you built your own.
-- Please provide a Minimal, Complete and Verifiable Example ([MCVE](https://stackoverflow.com/help/mcve)) to demonstrate your problem. An ideal submission includes a small piece of code that anyone can paste in one of the examples/ application (e.g. in main.cpp or imgui_demo.cpp) to understand and reproduce it. Narrowing your problem to its shortest and purest form is the easiest way to understand it. Please test your shortened code to ensure it actually exhibit the problem. Often while creating the MCVE you will end up solving the problem! Many questions that are missing a standalone verifiable example are missing the actual cause of their issue in the description, which ends up wasting everyone's time.
-- Try to attach screenshots to clarify the context. They often convey useful information that are omitted by the description. You can drag pictures/files here (prefer github attachments over 3rd party hosting).
-- When requesting a new feature, please describe the usage context (how you intend to use it, why you need it, etc.).
-
-**Some unfortunate words of warning**
-- If you are or were involved in cheating schemes (e.g. DLL injection) for competitive online multi-player games, please don't post here. We won't answer and you will be blocked. We've had too many of you. Please stop.
-- Due to frequent abuse of this service from aforementioned users, if your GitHub account is anonymous and was created five minutes ago please understand that your post will receive more scrutiny and incomplete questions may be dismissed.
-
-If you have been using dear imgui for a while or have been using C/C++ for several years or have demonstrated good behavior here, it is ok to not fullfill every item to the letter. Those are guidelines and experienced users or members of the community will know what information are useful in a given context.
-
-## How to create an Pull Request
-- When adding a feature, please describe the usage context (how you intend to use it, why you need it, etc.).
-- When fixing a warning or compilation problem, please post the compiler log and specify the version and OS you are using.
-- Try to attach screenshots to clarify the context and demonstrate the feature at a glance. You can drag pictures/files here (prefer github attachments over 3rd party hosting).
-- Make sure your code follows the coding style already used in imgui (spaces instead of tabs, "local_variable", "FunctionName", "MemberName", etc.). We don't use modern C++ idioms and can compile without C++11.
-- Make sure you create a branch for the pull request. In Git, 1 PR is associated to 1 branch. If you keep pushing to the same branch after you submitted the PR, your new commits will appear in the PR (we can still cherry-pick individual commits).
-
-Thank you for reading!

.github/issue_template.md

@@ -1,33 +0,0 @@
-IF YOU ARE HAVING AN ISSUE COMPILING/LINKING/RUNNING/DISPLAYING/ADDING FONTS/WIRING INPUTS, please post on the "Getting Started" Discourse forum:
-https://discourse.dearimgui.org/c/getting-started
-
-Otherwise, you may use this Issue Tracker to ask for help and submit bug reports, feature requests or suggestions. PLEASE CAREFULLY READ THIS DOCUMENT before submitting any issue:
-https://github.com/ocornut/imgui/blob/master/.github/CONTRIBUTING.md
-(Click "Preview" to turn the URL above into a clickable link)
-
-PLEASE MAKE SURE that you have: read the FAQ in imgui.cpp; explored the contents of ShowDemoWindow() including the Examples menu; searched among Issues; used your IDE to search for keywords in all sources and text files; and read the CONTRIBUTING.md file linked above.
-
-(Delete everything above this section before submitting your issue.)
-
-----
-
-**Version/Branch of Dear ImGui:**
-
-XXX
-
-**Back-end file/Renderer/OS:** _(or specify if you are using a custom engine back-end)_
-
-Back-ends: imgui_impl_XXX.cpp + imgui_impl_XXX.cpp
-OS: XXX 
-Compiler: XXX _(if the question is related to building)_
-
-**My Issue/Question:** _(please provide context)_
-
-**Standalone, minimal, complete and verifiable example:** _(see CONTRIBUTING.md)_
-```
-ImGui::Begin("Example Bug");
-MoreCodeToExplainMyIssue();
-ImGui::End();
-```
-
-**Screenshots/Video** _(you can drag files here)_

.github/pull_request_template.md

@@ -1,8 +0,0 @@
-- Please read https://github.com/ocornut/imgui/blob/master/.github/CONTRIBUTING.md
-- When adding a feature, please describe the usage context (how you intend to use it, why you need it, etc.).
-- When fixing a warning or compilation problem, please post the compiler log and specify the version and OS you are using.
-- Try to attach screenshots to clarify the context and demonstrate the feature at a glance.
-- Make sure your code follows the coding style already used in imgui (4 spaces instead of tabs, "type* name", "local_variable", "FunctionName", "MemberName", etc.). We don't use modern C++ idioms and can compile without C++11.
-- Make sure you create a branch for the pull request. In Git, 1 PR is associated to 1 branch. If you keep pushing to the same branch after you submitted the PR, your new commits will appear in the PR.
-
-(Clear this form before submitting your PR)

LICENSE.txt

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2014-2018 Omar Cornut
+Copyright (c) 2014-2019 Omar Cornut
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

docs/README.md

@@ -1,21 +1,26 @@
-dear imgui,
+dear imgui
 =====
 [![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
 [![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
 
-_(This library is free but needs your support to sustain its development. There are many desirable features and maintenance ahead. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. If your company is using dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can invoice for technical support, custom development etc. Email: omarcornut at gmail)._
+_(This library is free as in freedom, but needs your support to sustain its development. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced financial support. If you are an individual using dear imgui, please consider donating via Patreon or PayPal.)_
 
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
+<br>&nbsp;&nbsp;[![Patreon](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/patreon_01.png)](http://www.patreon.com/imgui)
 
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+Individuals/hobbyists: support continued maintenance and development via PayPal:
+<br>&nbsp;&nbsp;[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
+
+Businesses: support continued maintenance and development via support contracts or sponsoring:
+<br>&nbsp;&nbsp;_E-mail: omarcornut at gmail dot com_
 
 Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
 
 Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
 
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard. 
+Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard.
+
+See [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui), [Quotes](https://github.com/ocornut/imgui/wiki/Quotes) and [Gallery](https://github.com/ocornut/imgui/issues/2529) pages to get an idea of its use cases.
 
 Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
 - imgui.cpp
@@ -25,9 +30,9 @@ Dear ImGui is self-contained within a few files that you can easily copy and com
 - imgui_widgets.cpp
 - imgui_internal.h
 - imconfig.h (empty by default, user-editable)
-- stb_rect_pack.h
-- stb_textedit.h
-- stb_truetype.h
+- imstb_rectpack.h
+- imstb_textedit.h
+- imstb_truetype.h
 
 No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
 
@@ -71,7 +76,7 @@ ImGui::ColorEdit4("Color", my_color);
 // Plot some values
 const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
 ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
- 
+
 // Display contents in a scrolling region
 ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
 ImGui::BeginChild("Scrolling");
@@ -85,66 +90,68 @@ Result:
 
 ### How it works
 
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize state duplication, state synchronization and state storage from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces. 
+Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize superfluous state duplication, state synchronization and state retention from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces.
 
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes is typically very small. Because it doesn't know or touch graphics state directly, you can call ImGui commands anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase. 
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes required to render them is fairly small. Because Dear ImGui doesn't know or touch graphics state directly, you can call its functions  anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase.
 
 _A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
 
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.  
+Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.
 
 Demo Binaries
 -------------
 
 You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
-- [imgui-demo-binaries-20180512.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20180512.zip) (Windows binaries, Dear ImGui 1.61 WIP built 2018/05/12, 5 executables)
+- [imgui-demo-binaries-20190219.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20190219.zip) (Windows binaries, Dear ImGui 1.68 built 2019/02/19, master branch, 5 executables)
 
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
 
 Bindings
 --------
 
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer and at ease with those concepts, it should take you less than an hour to integrate Dear ImGui in your custom engine, but make sure to spend time reading the FAQ, the comments and other documentation!
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer at ease with those concepts, it should take you about an hour to integrate Dear ImGui in your custom engine. Make sure to spend time reading the FAQ, the comments and other documentation!
 
 _NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
 
 Languages: (third-party bindings)
-- C: [cimgui](https://github.com/Extrawurst/cimgui) or [sonoro1234's cimgui](https://github.com/sonoro1234/cimgui) (more recent update), also see [#1879](https://github.com/ocornut/imgui/issues/1879)
+- C: [cimgui](https://github.com/cimgui/cimgui) (2018: now auto-generated! you can use its json output to generate bindings for other languages)
 - C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
 - ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
 - D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
-- Go: [go-imgui](https://github.com/Armored-Dragon/go-imgui)
+- Go: [imgui-go](https://github.com/inkyblackness/imgui-go) or [go-imgui](https://github.com/Armored-Dragon/go-imgui)
 - Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
 - Java: [jimgui](https://github.com/ice1000/jimgui)
 - JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
-- Lua: [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
+- Julia: [CImGui.jl](https://github.com/Gnimuc/CImGui.jl)
+- Lua: [LuaJIT-ImGui](https://github.com/sonoro1234/LuaJIT-ImGui), [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
 - Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
 - Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
 - PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
-- Python [CyImGui](https://github.com/chromy/cyimgui) or [pyimgui](https://github.com/swistakm/pyimgui)
-- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs)
+- Python: [pyimgui](https://github.com/swistakm/pyimgui) or [bimpy](https://github.com/podgorskiy/bimpy)
+- Ruby: [ruby-imgui](https://github.com/vaiorabbit/ruby-imgui)
+- Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs) or [imgui-rust](https://github.com/nsf/imgui-rust)
 - Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
 
 Frameworks:
-- Renderers: DirectX 9, DirectX 10, DirectX 11, DirectX 12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Platform: GLFW, SDL, Win32, OSX, Freeglut: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Framework: Allegro 5, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
-- Unmerged PR: SDL2 + OpenGLES + Emscripten: [#336](https://github.com/ocornut/imgui/pull/336)
+- Renderers: DirectX 9/10/11/12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Platform: GLFW, SDL, Win32, OSX, GLUT: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
+- Framework: Allegro 5, Emscripten, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
 - Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
-- Unmerged PR: ORX: [#1843](https://github.com/ocornut/imgui/pull/1843)
 - Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
-- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [issue #551](https://github.com/ocornut/imgui/issues/551)
+- Cocos2d-x: [imguix](https://github.com/c0i/imguix), [#551](https://github.com/ocornut/imgui/issues/551)
 - Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
 - GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
 - Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
 - Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
 - OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
 - OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
+- ORX: [ImGuiOrx](https://github.com/thegwydd/ImGuiOrx), [#1843](https://github.com/ocornut/imgui/pull/1843)
+- px_render: [px_render_imgui.h](https://github.com/pplux/px/blob/master/px_render_imgui.h), [#1935](https://github.com/ocornut/imgui/pull/1935)
 - LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
-- Magnum: [magnum-imgui](https://github.com/lecopivo/magnum-imgui), [MagnumImguiPort](https://github.com/lecopivo/MagnumImguiPort)
+- Magnum: [ImGuiIntegration](https://doc.magnum.graphics/magnum/namespaceMagnum_1_1ImGuiIntegration.html) ([example](https://doc.magnum.graphics/magnum/examples-imgui.html))
 - NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
-- Qt3d: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d), QOpenGLWindow [qtimgui](https://github.com/ocornut/imgui/issues/1910)
-- SFML: [imgui-sfml](https://github.com/EliasD/imgui-sfml)
+- Qt: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d) / [QOpenGLWindow (qtimgui)](https://github.com/ocornut/imgui/issues/1910) / [QtDirect3D](https://github.com/giladreich/QtDirect3D) / [qt6](https://github.com/alpqr/qvk6/tree/imgui/examples/rhi/imguidemo)
+- SFML: [imgui-sfml](https://github.com/eliasdaler/imgui-sfml)
 - Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
 - Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
 
@@ -152,10 +159,11 @@ For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Binding
 
 Roadmap
 -------
-Some of the goals for 2018 are:
+Some of the goals for 2019 are:
+- Finish work on docking, tabs. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public `docking` branch looking for feedback)
+- Finish work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public `docking` branch looking for feedback)
 - Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
-- Finish work on viewports and multiple OS windows management. (see [#1542](https://github.com/ocornut/imgui/issues/1542))
-- Finish work on docking, tabs. (see [#351](https://github.com/ocornut/imgui/issues/351#issuecomment-346865709))
+- Add an automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
 - Make Columns better. (they are currently pretty terrible!)
 - Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
 
@@ -168,101 +176,88 @@ User screenshots:
 <br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
 <br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
 <br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
-<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 onward)
-<br>Also see the [Mega screenshots](https://github.com/ocornut/imgui/issues/1273) for an idea of the available features.
+<br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 to January 2019)
+<br>[Gallery Part 8](https://github.com/ocornut/imgui/issues/2265) (January 2019 to May 2019)
+<br>[Gallery Part 9](https://github.com/ocornut/imgui/issues/2529) (May 2019 onward)
 
-Various tools
+Custom engine
 [![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
 
+Custom engine
 [![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
 
-![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/v160-misc-classic.png)
+Demo window
+![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png)
 
-[![screenshot profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
-
-Dear ImGui can load TTF/OTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
-Code:
-```cpp
-ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("NotoSansCJKjp-Medium.otf", 20.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-```
-```cpp
-ImGui::Text(u8"こんにちは！テスト %d", 123);
-if (ImGui::Button(u8"ロード"))
-{
-    // do stuff
-}
-ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
-ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-```
-Result:
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02_jp.png)
-<br>_(settings: Dark style (left), Light style (right) / Font: NotoSansCJKjp-Medium, 20px / Rounding: 5)_
+[Tracy Profiler](https://bitbucket.org/wolfpld/tracy)
+![tracy profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/tracy_profiler.png)
 
 References
 ----------
 
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
+The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works.
 - [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
 - [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
-- [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
+- [Jari Komppa's tutorial on building an IMGUI library](http://iki.fi/sol/imgui/).
 - [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
 - [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
 - [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
 
-See the [Wiki](https://github.com/ocornut/imgui/wiki) and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+See the [Wiki](https://github.com/ocornut/imgui/wiki) for more references and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
 
-Support Forums
---------------
+Support
+-------
 
-If you have issues with: compiling, linking, adding fonts, running or displaying Dear ImGui, or wiring inputs: please post on the Discourse forum: https://discourse.dearimgui.org/c/getting-started.
+If you are new to Dear ImGui and have issues with: compiling, linking, adding fonts, wiring inputs, running or displaying Dear ImGui: please post on the Discourse forums: https://discourse.dearimgui.org.
 
-For any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues.
+Otherwise for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
+
+Private support is available for paying customers.
 
 Frequently Asked Question (FAQ)
 -------------------------------
 
 **Where is the documentation?**
 
-- The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function. It covers most features of ImGui so you can read the code and call the function itself to see its output. 
-- Standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder. 
-- We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
+ This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.
+ - Run the examples/ applications and explore them.
+ - See demo code in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function.
+ - The demo covers most features of Dear ImGui, so you can read the code and see its output.
+ - See documentation and comments at the top of imgui.cpp + effectively imgui.h.
+ - Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder to explain how to integrate Dear ImGui with your own engine/application.
+ - Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
+ - We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
 
 **Which version should I get?**
 
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported. 
+I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
+
+You may also peak at the [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features in the `docking` branch. Many projects are using this branch and it is kept in sync with master regularly.
 
 **Who uses Dear ImGui?**
 
-See the [Software using dear imgui page](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) for an (incomplete) list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes) and [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for a list of games/software which are publicly known to use dear imgui. Please add yours if you can!
 
-**Why the odd dual naming, "dear imgui" vs "ImGui"?**
+**Why the odd dual naming, "Dear ImGui" vs "ImGui"?**
 
-The library started its life and is best known as "ImGui" only due to the fact that I didn't give it a proper name when I released it. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations. It seemed confusing and unfair to hog the name. To reduce the ambiguity without affecting existing codebases, I have decided on an alternate, longer name "dear imgui" that people can use to refer to this specific library in ambiguous situations.
+The library started its life as "ImGui" due to the fact that I didn't give it a proper name when I released 1.0 and had no particular expectation that it would take off. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations (e.g. Unity uses it own implementation of the IMGUI paradigm). To reduce this ambiguity without affecting existing codebases, I have decided on an alternate, longer name "Dear ImGui" that people can use to refer to this specific library. Please try to refer to this library as "Dear ImGui".
 
-**How can I tell whether to dispatch mouse/keyboard to imgui or to my application?**
+**How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?**
 <br>**How can I display an image? What is ImTextureID, how does it works?**
-<br>**How can I have multiple widgets with the same label or without a label? A primer on labels and the ID Stack.**
+<br>**Why are multiple widgets reacting when I interact with a single one? How can I have multiple widgets with the same label or with an empty label? A primer on labels and the ID Stack...**
 <br>**How can I use my own math types instead of ImVec2/ImVec4?**
 <br>**How can I load a different font than the default?**
 <br>**How can I easily use icons in my application?**
 <br>**How can I load multiple fonts?**
-<br>**How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?**
-<br>**How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)**
+<br>**How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?** ([example](https://github.com/ocornut/imgui/wiki/Loading-Font-Example))
+<br>**How can I interact with standard C++ types (such as std::string and std::vector)?**
+<br>**How can I use the drawing facilities without a Dear ImGui window? (using ImDrawList API)**
+<br>**How can I use this without a mouse, without a keyboard or without a screen? (gamepad, input share, remote display)**
 <br>**I integrated Dear ImGui in my engine and the text or lines are blurry..**
 <br>**I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..**
 <br>**How can I help?**
 
-See the FAQ in imgui.cpp for answers.
-
-**How do you use Dear ImGui on a platform that may not have a mouse or keyboard?**
-
-You can control Dear ImGui with a gamepad, see the explanation in imgui.cpp about how to use the navigation feature (short version: map your gamepad inputs into the `io.NavInputs[]` array and set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad`).
-
-You can share your computer mouse seamlessly with your console/tablet/phone using [Synergy](http://synergy-project.org). This is the preferred solution for developer productivity. In particular, their [micro-synergy-client](https://github.com/symless/micro-synergy-client) repo there is _uSynergy.c_ sources for a small embeddable that you can use on any platform to connect to your host PC using Synergy 1.x. You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui).
-
-For touch inputs, you can increase the hit box of widgets (via the _style.TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
+See the FAQ in [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) for answers.
 
 **Can you create elaborate/serious tools with Dear ImGui?**
 
@@ -280,45 +275,54 @@ You can alter the look of the interface to some degree: changing colors, sizes,
 
 Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
 
-There is a [c-api for ImGui (cimgui)](https://github.com/Extrawurst/cimgui) by Stephan Dilly + a newer, [auto-generated cimgui](https://github.com/sonoro1234/cimgui) by sonoro1234. Both are designed for binding other languages. I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to other languages.
+There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/cimgui/cimgui) by Sonoro1234 and Stephan Dilly. It is designed for creating binding to other languages. If possible, I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for various third-party bindings.
 
 Support dear imgui
 ------------------
 
+**How can I help?**
+
+- You may participate in the [Discourse forums](https://discourse.dearimgui.org) and the GitHub [issues tracker](https://github.com/ocornut/imgui/issues).
+- You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest in the end-users and also to ease the maintainer into understanding and accepting it.
+- See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
+- Have your company financially support this project.
+
 **How can I help financing further development of Dear ImGui?**
 
-Your contributions are keeping the library alive. If you are an individual using dear imgui, please consider donating to enable me to spend more time improving the library.
+Your contributions are keeping this project alive. The library is free as in freedom, but continued maintenance and development are a full-time endeavor. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for financial support. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. Thank you!
 
-Monthly donations via Patreon:
-<br>[![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui)
+Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
+<br>&nbsp;&nbsp;[![Patreon](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/patreon_01.png)](http://www.patreon.com/imgui)
 
-One-off donations via PayPal:
-<br>[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=5Q73FPZ9C526U)
+Individuals/hobbyists: support continued maintenance and development via PayPal:
+<br>&nbsp;&nbsp;[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
 
-Ongoing dear imgui development is financially supported on [**Patreon**](http://www.patreon.com/imgui) and by private sponsors.
-If your company uses dear imgui, please consider financial support (e.g. sponsoring a few weeks/months of development. I can also invoice for private support, custom development etc. contact me for details: omarcornut at gmail). Thanks! 
+Businesses: support continued maintenance and development via support contracts or sponsoring:
+<br>&nbsp;&nbsp;_E-mail: omarcornut at gmail dot com_
+
+Ongoing dear imgui development is financially supported by users and private sponsors, recently:
 
 **Platinum-chocolate sponsors**
-- Blizzard Entertainment.
+- **Blizzard Entertainment**.
 
 **Double-chocolate sponsors**
-- Media Molecule, Mobigame, Insomniac Games, Aras Pranckevičius, Lizardcube, Greggman, DotEmu, Nadeo, Supercell, Runner, Artometa, Friendly Shade.
+- Media Molecule, Mobigame, Aras Pranckevičius, Greggman, DotEmu, Nadeo, Supercell, Runner, Aiden Koss, Kylotonn.
 
 **Salty caramel supporters**
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse, Lionel Landwerlin, Nikolay Ivanov, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Jeff Roberts.
+- Remedy Entertainment, Recognition Robotics, ikrima, Geoffrey Evans, Mercury Labs, Singularity Demo Group, Lionel Landwerlin, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Jeff Roberts, Rainway inc, Ondra Voves, Mesh Consultants, Unit 2 Games, Neil Bickford.
 
 **Caramel supporters**
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić, Jonas Bernemann, Johan Andersson, Nathan Hartman, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Felipe Alfonso, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Edsel Malasig, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Astrofra, Jonas Lehmann, Steven Kah Hien Wong, Bartosz Bielecki, Oscar Penas, A M, Liam Moynihan.
+- Jerome Lanquetot, Daniel Collin, Ctrl Alt Ninja, Neil Henning, Neil Blakey-Milner, Aleksei, NeiloGD, Eric, Game Atelier, Vincent Hamm, Colin Riley, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Josh Faust, Martin Donlon, Codecat, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Jonas Bernemann, Johan Andersson, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Steven Kah Hien Wong, Bartosz Bielecki, Oscar Penas, A M, Liam Moynihan, Artometa, Mark Lee, Dimitri Diakopoulos, Pete Goodwin, Johnathan Roatch, nyu lea, Oswald Hurlem, Semyon Smelyanskiy, Le Bach, Jeong MyeongSoo, Chris Matthews, Astrofra.
 
-And all other supporters; THANK YOU!
+And all other past and present supporters; THANK YOU!
 (Please contact me if you would like to be added or removed from this list)
 
 Credits
 -------
 
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com). 
+Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com).
 
-I first discovered imgui principles at [Q-Games](http://www.q-games.com) where Atman had dropped his own simple imgui implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating on it. 
+I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it.
 
 Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
 
@@ -329,4 +333,4 @@ Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Bin
 License
 -------
 
-Dear ImGui is licensed under the MIT License, see LICENSE for more information.
+Dear ImGui is licensed under the MIT License, see [LICENSE.txt](https://github.com/ocornut/imgui/blob/master/LICENSE.txt) for more information.

docs/TODO.txt

@@ -8,16 +8,13 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - doc/test: add a proper documentation+regression testing system (#435)
  - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
  - doc/tips: tips of the day: website? applet in imgui_club?
- - project: folder or separate repository with maintained helpers (e.g. imgui_memory_editor.h, imgui_stl.h, maybe imgui_dock would be there?)
 
+ - window: preserve/restore relative focus ordering (persistent or not) (#2304) -> also see docking reference to same #.
  - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
  - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
  - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
  - window: allow resizing of child windows (possibly given min/max for each axis?.)
  - window: background options for child windows, border option (disable rounding).
- - window: resizing from any sides? done. > need backends to honor mouse cursors properly. (#822)
- - window: resize from borders: support some form of outer padding to make it easier to grab borders. (#822)
- - window: fix resize glitch when collapsing an AlwaysAutoResize window.
  - window: begin with *p_open == false could return false.
  - window: get size/pos helpers given names (see discussion in #249)
  - window: a collapsed window can be stuck behind the main menu bar?
@@ -28,25 +25,34 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - window: expose contents size. (#1045)
  - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
  - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
- - window: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. 
  - window: investigate better auto-positioning for new windows.
+ - window: top most window flag? (#2574)
+ - window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
+ - window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
+ - window/child: border could be emitted in parent as well.
+ - window/clipping: some form of clipping when DisplaySize (or corresponding viewport) is zero.
+ - window/tab: add a way to signify that a window or docked window requires attention (e.g. blinking title bar).
+ - scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
  - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
  - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
  - scrolling/style: shadows on scrollable areas to denote that there is more contents
 
  - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ ! drawlist: add calctextsize func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
  - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
  - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
  - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
  - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
- - drawlist: non-AA strokes have gaps between points (#593, #288), especially RenderCheckmark().
+ - drawlist: non-AA strokes have gaps between points (#593, #288), glitch especially on RenderCheckmark() and ColorPicker4().
  - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
  - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
  - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
+ - drawlist: AddRect vs AddLine position confusing (#2441)
+ - drawlist: channel splitter should be external helper and not stored in ImDrawList.
  - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
  - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
+ - drawlist/opt: thick AA line could be doable in same number of triangles as 1.0 AA line by storing gradient+full color in atlas.
 
- - main: considering adding an Init() function? some constructs are awkward in the implementation because of the lack of them.
  - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
  - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
  - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
@@ -55,13 +61,18 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
  - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
  - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
- - widgets: add always-allow-overlap mode.
+ - widgets: add always-allow-overlap mode. This should perhaps be the default.
  - widgets: start exposing PushItemFlag() and ImGuiItemFlags
  - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
  - widgets: activate by identifier (trigger button, focus given id)
  - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+ - widgets: selectable: generic BeginSelectable()/EndSelectable() mechanism.
+ - widgets: selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
+ - widgets: checkbox: checkbox with custom glyph inside frame.
+ - widgets: coloredit: keep reporting as active when picker is on?
+ - widgets: group/scalarn functions: expose more per-component information. e.g. store NextItemData.ComponentIdx set by scalarn function, groups can expose them back somehow.
 
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. 
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile.
  - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
  - input text: expose CursorPos in char filter event (#816)
  - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
@@ -73,7 +84,12 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
  - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
  - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text: decorrelate layout from inputs - e.g. what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text: global callback system so user can plug in an expression evaluator easily. (#1691)
+ - input text: force scroll to end or scroll to a given line/contents (so user can implement a log or a search feature)
+ - input text: a side bar that could e.g. preview where errors are. probably left to the user to draw but we'd need to give them the info there.
+ - input text: a way for the user to provide syntax coloring.
+ - input text: Shift+TAB with ImGuiInputTextFlags_AllowTabInput could eat preceding blanks, up to tab_count.
  - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
  - input text multi-line: support for cut/paste without selection (cut/paste the current line)
  - input text multi-line: line numbers? status bar? (follow up on #200)
@@ -91,21 +107,24 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - layout: horizontal flow until no space left (#404)
  - layout: more generic alignment state (left/right/centered) for single items?
  - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
- - layout: BeginGroup() needs a border option. (~#1496)
  - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
- 
+
+ - group: BeginGroup() needs a border option. (~#1496)
+ - group: IsHovered() after EndGroup() covers whole aabb rather than the intersection of individual items. Is that desirable?
+ - group: merge deactivation/activation within same group (fwd WasEdited flag). (#2550)
+
  - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
  - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
- - columns: headers. reorderable. (#513, #125)
+ - columns: headers. re-orderable. (#513, #125)
  - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
- - columns: option to alternate background colors on odd/even scanlines.  
- - columns: allow columns to recurse. 
- - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them. 
+ - columns: option to alternate background colors on odd/even scanlines.
+ - columns: allow columns to recurse.
+ - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them.
  - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
  - columns: flag to add horizontal separator above/below?
  - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
 
-!- color: the color conversion helpers/types are a mess and needs sorting out. 
+!- color: the color conversion helpers/types are a mess and needs sorting out.
  - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
 
  - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
@@ -120,20 +139,23 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
  - clipper: ability to disable the clipping through a simple flag/bool.
  - clipper: ability to run without knowing full count in advance.
+ - clipper: horizontal clipping support. (#2580)
 
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- 
- - dock: docking extension
+ - separator: expose flags (#759)
+ - separator: width, thickness, centering (#1643)
+ - splitter: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+
+ - dock: merge docking branch (#2109)
  - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
 
- - tabs: re-ordering, close buttons, context menu, persistent order (#261, #351)
+ - tabs: make EndTabBar fail if users doesn't respect BeginTabBar return value, for consistency/future-proofing.
+ - tabs: persistent order/focus in BeginTabBar() api (#261, #351)
 
- - ext: stl-ish friendly extension (imgui_stl.h) that has wrapper for std::string, std::vector etc.
-
- - button: provide a button that looks framed.
+ - button: provide a button that looks framed. (?)
  - image/image button: misalignment on padded/bordered button?
  - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
- - image button: not taking an explicit id is odd.
+ - image button: not taking an explicit id can be problematic. (#2464, #1390)
+ - slider/drag: ctrl+click when format doesn't include a % character.. disable? display underlying value in default format? (see TempInputTextScalar)
  - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
  - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
  - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
@@ -142,7 +164,9 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - slider: step option (#1183)
  - slider style: fill % of the bar instead of positioning a drag.
  - knob: rotating knob widget (#942)
+ - drag float: power/logarithmic slider and drags are weird. (#1316)
  - drag float: up/down axis
+ - drag float: power != 0.0f with current value being outside the range keeps the value stuck.
  - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
 
  - combo: use clipper: make it easier to disable clipper with a single flag.
@@ -156,7 +180,9 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - listbox: user may want to initial scroll to focus on the one selected value?
  - listbox: expose hovered item for a basic ListBox
  - listbox: keyboard navigation.
+ - listbox: disable capturing mouse wheel if the listbox has no scrolling. (#1681)
  - listbox: scrolling should track modified selection.
+ - listbox: future api should allow to enable horizontal scrolling (#2510)
 
 !- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
  - popups/modal: make modal title bar blink when trying to click outside the modal
@@ -168,8 +194,8 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
  - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
  - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485) 
- 
+ - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485)
+
  - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
  - menus: menu bars inside modal windows are acting weird.
  - status-bar: add a per-window status bar helper similar to what menu-bar does.
@@ -177,13 +203,14 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
  - shortcuts: programmatically access shortcuts "Focus("&Save"))
  - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
- - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer. 
+ - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
 
  - text: selectable text (for copy) as a generic feature (ItemFlags?)
  - text: proper alignment options in imgui_internal.h
  - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
  - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
  - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
+ - text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
  - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
 
  - tree node / optimization: avoid formatting when clipped.
@@ -193,68 +220,82 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
  - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
  - tree node: leaf/non-leaf highlight mismatch.
+ - tree node: _NoIndentOnOpen flag? would require to store a per-depth bit mask to store info for pop (or whatever is cheaper)
 
  - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
  - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
  - stb: add defines to disable stb implementations
 
-!- style: better default styles. (#707)
+ - style: better default styles. (#707)
  - style: add a highlighted text color (for headers, etc.)
  - style: border types: out-screen, in-screen, etc. (#447)
  - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
  - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
  - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
  - style: global scale setting.
+ - style: FramePadding could be different for up vs down (#584)
  - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
  - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
  - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
  - style editor: color child window height expressed in multiple of line height.
 
- - log: LogButtons() options for specifying depth and/or hiding depth slider
  - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
  - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
  - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
+ - log: obsolete LogButtons() all together.
+ - log: LogButtons() options for specifying depth and/or hiding depth slider
 
  - filters: set a current filter that tree node can automatically query to hide themselves
  - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
  - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
 
+ - drag and drop: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers.
+ - drag and drop: fix/support/options for overlapping drag sources.
+ - drag and drop: releasing a drop shows the "..." tooltip for one frame - since e13e598 (#1725)
+ - drag and drop: drag source on a group object (would need e.g. an invisible button covering group in EndGroup) https://twitter.com/paniq/status/1121446364909535233
  - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
  - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
  - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
  - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: demo with reordering nodes (in a list, or a tree node). (#143)
  - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
+ - drag and drop: allow for multiple payload types. (#143)
  - drag and drop: make payload optional? (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
+ - drag and drop: (#143) "both an in-process pointer and a promise to generate a serialized version, for whether the drag ends inside or outside the same process"
+ - drag and drop: feedback when hovering a region blocked by modal (mouse cursor "NO"?)
  - node/graph editor (#306)
  - pie menus patterns (#434)
  - markup: simple markup language for color change? (#902)
 
-!- font: need handling of missing glyphs by not packing/rasterizing glyph 0 of a given font.
- - font: MergeMode: flags to select overwriting or not.
- - font: MergeMode: duplicate glyphs are stored in the atlas texture which is suboptimal.
+ - font: MergeMode: flags to select overwriting or not (this is now very easy with refactored ImFontAtlasBuildWithStbTruetype)
  - font: free the Alpha buffer if user only requested RGBA.
 !- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
  - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
  - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
- - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data 
+ - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data
+ - font: make it easier to submit own bitmap font (same texture, another texture?). (#2127, #2575)
  - font: PushFontSize API (#1018)
  - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
+ - font: storing MinAdvanceX per font would allow us to skip calculating line width (under a threshold of character count) in loops looking for block width
+ - font/demo: add tools to show glyphs used by a text blob, display U16 value, list missing glyphs.
+ - font/demo: demonstrate use of ImFontGlyphRangesBuilder.
  - font/atlas: add a missing Glyphs.reserve()
  - font/atlas: incremental updates
  - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
- - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
  - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
  - font/draw: need to be able to specify wrap start position.
  - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
- - font: imgui_freetype.h alternative renderer (#618)
- - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct).
+ - font/draw: underline, squiggle line rendering helpers.
+ - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct), would save on cache line.
  - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
  - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
- - font: (api breaking) removed "TTF" from symbol names. also because it now supports OTF.
+ - font: fix AddRemapChar() to work before atlas  has been built.
+ - font: what would it take to support codepoint higher than 0xFFFF? (smileys, etc.) (#2538, #2541)
+ - font: (api breaking) remove "TTF" from symbol names. also because it now supports OTF.
+ - font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
+ - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16 bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
 
+ - nav: NavScrollToBringItemIntoView() with item bigger than view should focus top-right? Repro: using Nav in "About Window"
  - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
  - nav: patterns to make it possible for arrows key to update selection
  - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
@@ -266,8 +307,11 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
  - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
  - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
- - nav: menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
- - nav: menus: allow pressing Menu to leave a sub-menu.
+ - nav/menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
+ - nav/menus: allow pressing Menu to leave a sub-menu.
+ - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB)
+ - nav/menus: when using the main menu bar, even though we restore focus after, the underlying window loses its title bar highlight during menu manipulation. could we prevent it?
+ - nav/menus: main menu bar currently cannot restore a NULL focus. Could save NavWindow at the time of being focused, similarly to what popup do?
  - nav: simulate right-click or context activation? (SHIFT+F10)
  - nav: tabs should go through most/all widgets (in submission order?).
  - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
@@ -284,32 +328,41 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - inputs: support track pad style scrolling & slider edit.
  - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
  - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
+ - inputs: add mouse cursor for unavailable/no? IDC_NO/SDL_SYSTEM_CURSOR_NO.
+ - inputs/scrolling: support for smooth scrolling (#2462, #2569)
 
- - misc: idle refresh: expose cursor blink animation timer for backend to be able to lower framerate.
+ - misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for back-end to be able stop refreshing easily.
+ - misc: idle: if cursor blink if the _only_ visible animation, core imgui could rewrite vertex alpha to avoid CPU pass on ImGui:: calls.
+ - misc: idle: if cursor blink if the _only_ visible animation, could even expose a dirty rectangle that optionally can be leverage by some app to render in a smaller viewport, getting rid of much pixel shading cost.
  - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
  - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
  - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
  - misc: use more size_t in public api?
- - misc: ImVector: erase_unsorted() helper
- - misc: imgui_cpp: perhaps a misc/ header file with more friendly helper (e.g. type-infer versions of DragScalar, vector<> variants if appropriate for some functions).
+ - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683)
+ - misc: possible compile-time support for wchar_t instead of char*?
 
  - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - web/emscriptem: refactor some examples to facilitate integration with emscripten main loop system. (#1713, #336)
- - web/emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+ - emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 
  - remote: make a system like RemoteImGui first-class citizen/project (#75)
 
- - demo: find a way to demonstrate textures in the examples application, as it such a a common issue for new users.
+ - demo: find a way to demonstrate textures in the examples application, as it such a common issue for new users.
+ - demo: demonstrate using PushStyleVar() in more details.
  - demo: add vertical separator demo
  - demo: add virtual scrolling example?
- - demo: demonstration Plot offset
+ - demo: demonstrate Plot offset
  - examples: window minimize, maximize (#583)
  - examples: provide a zero frame-rate/idle example.
  - examples: apple: example_apple should be using modern GL3.
  - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - examples: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
+ - examples: opengl: could use a single vertex buffer and glBufferSubData for uploads?
+ - examples: opengl: explicitly disable GL_STENCIL_TEST in bindings.
+ - examples: vulkan: viewport: support for synchronized swapping of multiple swap chains.
  - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
  - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
  - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
+ - optimization: fully covered window (covered by another with non-translucent bg + WindowRounding worth of padding) may want to clip rendering.
  - optimization: use another hash function than crc32, e.g. FNV1a
  - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
  - optimization: turn some the various stack vectors into statically-sized arrays

docs/issue_template.md

@@ -0,0 +1,46 @@
+(Click "Preview" to turn any http URL into a clickable link)
+
+1. PLEASE CAREFULLY READ:
+https://github.com/ocornut/imgui/issues/2261
+
+2. IF YOU ARE HAVING AN ISSUE COMPILING/LINKING/RUNNING/LOADING FONTS, please post on the "Getting Started" Discourse forum:
+https://discourse.dearimgui.org
+
+3. PLEASE MAKE SURE that you have: read the FAQ in imgui.cpp; explored the contents of `ShowDemoWindow()` including the Examples menu; searched among Issues; used your IDE to search for keywords in all sources and text files; and read the link provided in (1).
+
+4. Be mindful that messages are being sent to the e-mail box of "Watching" users. Try to proof-read your messages before sending them. Edits are not seen by those users.
+
+5. Delete points 1-5 and PLEASE FILL THE TEMPLATE BELOW before submitting your issue.
+
+Thank you!
+
+----
+
+_(you may also go to Demo>About Window, and click "Config/Build Information" to obtain a bunch of detailed information that you can paste here)_
+
+**Version/Branch of Dear ImGui:**
+
+Version: XXX
+Branch: XXX _(master/viewport/docking/etc.)_
+
+**Back-end/Renderer/Compiler/OS**
+
+Back-ends: imgui_impl_XXX.cpp + imgui_impl_XXX.cpp _(or specify if using a custom engine/back-end)_
+Compiler: XXX _(if the question is related to building or platform specific features)_
+Operating System: XXX
+
+**My Issue/Question:**
+
+XXX _(please provide as much context as possible)_
+
+**Screenshots/Video**
+
+XXX _(you can drag files here)_
+
+**Standalone, minimal, complete and verifiable example:** _(see https://github.com/ocornut/imgui/issues/2261)_
+```
+// Please do not forget this!
+ImGui::Begin("Example Bug");
+MoreCodeToExplainMyIssue();
+ImGui::End();
+```

docs/pull_request_template.md

@@ -0,0 +1,6 @@
+(Click "Preview" to turn any http URL into a clickable link)
+
+PLEASE CAREFULLY READ:
+https://github.com/ocornut/imgui/issues/2261
+
+(Clear this template before submitting your PR)

examples/.gitignore

@@ -25,12 +25,16 @@ project.xcworkspace
 xcuserdata
 
 ## Emscripten output
+*.o.tmp
 *.out.js
 *.out.wasm
+example_emscripten/example_emscripten.*
 
 ## Unix executables
 example_glfw_opengl2/example_glfw_opengl2
 example_glfw_opengl3/example_glfw_opengl3
+example_glut_opengl2/example_glut_opengl2
+example_null/example_null
 example_sdl_opengl2/example_sdl_opengl2
 example_sdl_opengl3/example_sdl_opengl3
 

examples/README.txt

@@ -1,3 +1,5 @@
+-----------------------------------------------------------------------
+ dear imgui, v1.71
 -----------------------------------------------------------------------
  examples/README.txt
  (This is the README file for the examples/ folder. See docs/ for more documentation)
@@ -25,8 +27,8 @@ This folder contains two things:
  - Example applications (standalone, ready-to-build) using the aforementioned bindings.
    They are the in the XXXX_example/ sub-folders.
 
-You can find binaries of some of those example applications at: 
-  http://www.miracleworld.net/imgui/binaries
+You can find binaries of some of those example applications at:
+  http://www.dearimgui.org/binaries
 
 
 ---------------------------------------
@@ -35,7 +37,7 @@ You can find binaries of some of those example applications at:
 
  - Please read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
    Please read the comments and instruction at the top of each file.
-   
+
  - If you are using of the backend provided here, so you can copy the imgui_impl_xxx.cpp/h files
    to your project and use them unmodified. Each imgui_impl_xxxx.cpp comes with its own individual
    ChangeLog at the top of the .cpp files, so if you want to update them later it will be easier to
@@ -43,13 +45,13 @@ You can find binaries of some of those example applications at:
 
  - Dear ImGui has 0 to 1 frame of lag for most behaviors, at 60 FPS your experience should be pleasant.
    However, consider that OS mouse cursors are typically drawn through a specific hardware accelerated path
-   and will feel smoother than common GPU rendered contents (including Dear ImGui windows). 
-   You may experiment with the io.MouseDrawCursor flag to request ImGui to draw a mouse cursor itself, 
+   and will feel smoother than common GPU rendered contents (including Dear ImGui windows).
+   You may experiment with the io.MouseDrawCursor flag to request Dear ImGui to draw a mouse cursor itself,
    to visualize the lag between a hardware cursor and a software cursor. However, rendering a mouse cursor
    at 60 FPS will feel slow. It might be beneficial to the user experience to switch to a software rendered
-   cursor only when an interactive drag is in progress. 
+   cursor only when an interactive drag is in progress.
    Note that some setup or GPU drivers are likely to be causing extra lag depending on their settings.
-   If you feel that dragging windows feels laggy and you are not sure who to blame: try to build an 
+   If you feel that dragging windows feels laggy and you are not sure who to blame: try to build an
    application drawing a shape directly under the mouse cursor.
 
 
@@ -71,17 +73,17 @@ Most the example bindings are split in 2 parts:
  - Some bindings for higher level frameworks carry both "Platform" and "Renderer" parts in one file.
    This is the case for Allegro 5 (imgui_impl_allegro5.cpp), Marmalade (imgui_impl_marmalade5.cpp).
 
- - If you use your own engine, you may decide to use some of existing bindings and/or rewrite some using 
+ - If you use your own engine, you may decide to use some of existing bindings and/or rewrite some using
    your own API. As a recommendation, if you are new to Dear ImGui, try using the existing binding as-is
-   first, before moving on to rewrite some of the code. Although it is tempting to rewrite both of the 
+   first, before moving on to rewrite some of the code. Although it is tempting to rewrite both of the
    imgui_impl_xxxx files to fit under your coding style, consider that it is not necessary!
    In fact, if you are new to Dear ImGui, rewriting them will almost always be harder.
 
-   Example: your engine is built over Windows + DirectX11 but you have your own high-level rendering 
+   Example: your engine is built over Windows + DirectX11 but you have your own high-level rendering
    system layered over DirectX11.
-     Suggestion: step 1: try using imgui_impl_win32.cpp + imgui_impl_dx11.cpp first. 
-     Once this work, _if_ you want you can replace the imgui_impl_dx11.cpp code with a custom renderer 
-     using your own functions, etc. 
+     Suggestion: step 1: try using imgui_impl_win32.cpp + imgui_impl_dx11.cpp first.
+     Once this work, _if_ you want you can replace the imgui_impl_dx11.cpp code with a custom renderer
+     using your own functions, etc.
      Please consider using the bindings to the lower-level platform/graphics API as-is.
 
    Example: your engine is multi-platform (consoles, phones, etc.), you have high-level systems everywhere.
@@ -89,20 +91,20 @@ Most the example bindings are split in 2 parts:
      This is counter-intuitive, but this will get you running faster! Once you better understand how imgui
      works and is bound, you can rewrite the code using your own systems.
 
- - Road-map: Dear ImGui 1.70 (WIP currently in the "viewport" branch) will allows imgui windows to be 
-   seamlessly detached from the main application window. This is achieved using an extra layer to the 
-   platform and renderer bindings, which allows imgui to communicate platform-specific requests.
-   If you decide to use unmodified imgui_impl_xxxx.cpp files, you will automatically benefit from 
+ - Road-map: Dear ImGui 1.80 (WIP currently in the "docking" branch) will allows imgui windows to be
+   seamlessly detached from the main application window. This is achieved using an extra layer to the
+   platform and renderer bindings, which allows Dear ImGui to communicate platform-specific requests.
+   If you decide to use unmodified imgui_impl_xxxx.cpp files, you will automatically benefit from
    improvements and fixes related to viewports and platform windows without extra work on your side.
 
 
 List of Platforms Bindings in this repository:
 
     imgui_impl_glfw.cpp       ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
-    imgui_impl_osx.mm         ; macOS native API
+    imgui_impl_osx.mm         ; macOS native API (not as feature complete as glfw/sdl back-ends)
     imgui_impl_sdl.cpp        ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
     imgui_impl_win32.cpp      ; Win32 native API (Windows)
-    imgui_impl_freeglut.cpp   ; FreeGLUT (if you really miss the 90's)
+    imgui_impl_glut.cpp       ; GLUT/FreeGLUT (absolutely not recommended in 2019)
 
 List of Renderer Bindings in this repository:
 
@@ -111,8 +113,8 @@ List of Renderer Bindings in this repository:
     imgui_impl_dx11.cpp       ; DirectX11
     imgui_impl_dx12.cpp       ; DirectX12
     imgui_impl_metal.mm       ; Metal (with ObjC)
-    imgui_impl_opengl2.cpp    ; OpenGL2 (legacy, fixed pipeline <- don't use with modern OpenGL context)
-    imgui_impl_opengl3.cpp    ; OpenGL3, OpenGL ES 2, OpenGL ES 3 (modern programmable pipeline)
+    imgui_impl_opengl2.cpp    ; OpenGL 2 (legacy, fixed pipeline <- don't use with modern OpenGL context)
+    imgui_impl_opengl3.cpp    ; OpenGL 3/4, OpenGL ES 2, OpenGL ES 3 (modern programmable pipeline)
     imgui_impl_vulkan.cpp     ; Vulkan
 
 List of high-level Frameworks Bindings in this repository: (combine Platform + Renderer)
@@ -120,13 +122,15 @@ List of high-level Frameworks Bindings in this repository: (combine Platform + R
     imgui_impl_allegro5.cpp
     imgui_impl_marmalade.cpp
 
+Note that Dear ImGui works with Emscripten.
+The examples_emscripten/ app uses sdl.cpp + opengl3.cpp but other combinations are possible.
 Third-party framework, graphics API and languages bindings are listed at:
 
     https://github.com/ocornut/imgui/wiki/Bindings
 
     Languages: C, C#, ChaiScript, D, Go, Haxe, Java, Lua, Odin, Pascal, PureBasic, Python, Rust, Swift...
-    Frameworks: Cinder, Cocoa (OSX), Cocos2d-x, Emscripten, SFML, GML/GameMaker Studio, Irrlicht, Ogre, 
-    OpenSceneGraph, openFrameworks, LOVE, NanoRT, Nim Game Lib, Qt3d, SFML, Unreal Engine 4...
+    Frameworks: Cinder, Cocoa (OSX), Cocos2d-x, SFML, GML/GameMaker Studio, Irrlicht, Ogre, OpenSceneGraph,
+    openFrameworks, LOVE, NanoRT, Nim Game Lib, Qt3d, SFML, Unreal Engine 4...
     Miscellaneous: Software Renderer, RemoteImgui, etc.
 
 
@@ -135,22 +139,112 @@ Third-party framework, graphics API and languages bindings are listed at:
 ---------------------------------------
 
 Building:
-  Unfortunately in 2018 it is still tedious to create and maintain portable build files using external 
-  libraries (the kind we're using here to create a window and render 3D triangles) without relying on 
+  Unfortunately in 2018 it is still tedious to create and maintain portable build files using external
+  libraries (the kind we're using here to create a window and render 3D triangles) without relying on
   third party software. For most examples here I choose to provide:
    - Makefiles for Linux/OSX
    - Batch files for Visual Studio 2008+
-   - A .sln project file for Visual Studio 2010+ 
+   - A .sln project file for Visual Studio 2010+
    - Xcode project files for the Apple examples
   Please let me know if they don't work with your setup!
   You can probably just import the imgui_impl_xxx.cpp/.h files into your own codebase or compile those
   directly with a command-line compiler.
 
 
+example_allegro5/
+    Allegro 5 example.
+    = main.cpp + imgui_impl_allegro5.cpp
+
+example_apple_metal/
+    OSX & iOS + Metal.
+    = main.m + imgui_impl_osx.mm + imgui_impl_metal.mm
+    It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
+    (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms back-ends.
+    You may prefer to use the GLFW Or SDL back-ends, which will also support Windows and Linux.)
+
+example_apple_opengl2/
+    OSX + OpenGL2.
+    = main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp
+    (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms back-ends.
+    You may prefer to use the GLFW Or SDL back-ends, which will also support Windows and Linux.)
+
+example_empscripten:
+    Emcripten + SDL2 + OpenGL3+/ES2/ES3 example.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
+    Note that other examples based on SDL or GLFW + OpenGL could easily be modified to work with Emscripten.
+    We provide this to make the Emscripten differences obvious, and have them not pollute all other examples.
+
+example_glfw_metal/
+    GLFW (Mac) + Metal example.
+    = main.mm + imgui_impl_glfw.cpp + imgui_impl_metal.mm.
+
+example_glfw_opengl2/
+    GLFW + OpenGL2 example (legacy, fixed pipeline).
+    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
+    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+    **Prefer using OPENGL3 code (with gl3w/glew/glad, you can replace the OpenGL function loader)**
+    This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
+    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
+    make things more complicated, will require your code to reset many OpenGL attributes to their initial
+    state, and might confuse your GPU driver. One star, not recommended.
+
+example_glfw_opengl3/
+    GLFW (Win32, Mac, Linux) + OpenGL3+/ES2/ES3 example (programmable pipeline).
+    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp
+    This uses more modern OpenGL calls and custom shaders.
+    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
+    (Please be mindful that accessing OpenGL3+ functions requires a function loader, which are a frequent
+    source for confusion for new users. We use a loader in imgui_impl_opengl3.cpp which may be different
+    from the one your app normally use. Read imgui_impl_opengl3.h for details and how to change it.)
+
+example_glfw_vulkan/
+    GLFW (Win32, Mac, Linux) + Vulkan example.
+    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
+    This is quite long and tedious, because: Vulkan.
+
+example_glut_opengl2/
+    GLUT (e.g., FreeGLUT on Linux/Windows, GLUT framework on OSX) + OpenGL2.
+    = main.cpp + imgui_impl_glut.cpp + imgui_impl_opengl2.cpp
+    Note that GLUT/FreeGLUT is largely obsolete software, prefer using GLFW or SDL.
+
+example_marmalade/
+    Marmalade example using IwGx.
+    = main.cpp + imgui_impl_marmalade.cpp
+
+example_null
+    Null example, compile and link imgui, create context, run headless with no inputs and no graphics output.
+    = main.cpp
+    This is used to quickly test compilation of core imgui files in as many setups as possible.
+    Because this application doesn't create a window nor a graphic context, there's no graphics output.
+
+example_sdl_opengl2/
+    SDL2 (Win32, Mac, Linux etc.) + OpenGL example (legacy, fixed pipeline).
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl2.cpp
+    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
+    **Prefer using OPENGL3 code (with gl3w/glew/glad, you can replace the OpenGL function loader)**
+    This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
+    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
+    make things more complicated, will require your code to reset many OpenGL attributes to their initial
+    state, and might confuse your GPU driver. One star, not recommended.
+
+example_sdl_opengl3/
+    SDL2 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
+    This uses more modern OpenGL calls and custom shaders.
+    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
+    (Please be mindful that accessing OpenGL3+ functions requires a function loader, which are a frequent
+    source for confusion for new users. We use a loader in imgui_impl_opengl3.cpp which may be different
+    from the one your app normally use. Read imgui_impl_opengl3.h for details and how to change it.)
+
+example_sdl_vulkan/
+    SDL2 (Win32, Mac, Linux, etc.) + Vulkan example.
+    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_vulkan.cpp
+    This is quite long and tedious, because: Vulkan.
+
 example_win32_directx9/
     DirectX9 example, Windows only.
     = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx9.cpp
-    
+
 example_win32_directx10/
     DirectX10 example, Windows only.
     = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx10.cpp
@@ -158,73 +252,8 @@ example_win32_directx10/
 example_win32_directx11/
     DirectX11 example, Windows only.
     = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-    
+
 example_win32_directx12/
     DirectX12 example, Windows only.
-    This is quite long and tedious, because: DirectX12.
     = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx12.cpp
-
-example_apple_metal/
-    OSX & iOS + Metal.
-    It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
-    (NB: you may still want to use GLFW or SDL which will also support Windows, Linux along with OSX.)
-    = game template + imgui_impl_osx.mm + imgui_impl_metal.mm
-
-example_apple_opengl2/
-    OSX + OpenGL2.
-    (NB: you may still want to use GLFW or SDL which will also support Windows, Linux along with OSX.)
-    = main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp
-
-example_glfw_opengl2/
-    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
-    **Prefer using OPENGL3 code (with gl3w/glew/glad, you can replace the OpenGL function loader)**
-    GLFW + OpenGL2 example (legacy, fixed pipeline).
-    This code is mostly provided as a reference to learn about ImGui integration, because it is shorter.
-    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
-    make things more complicated, will require your code to reset many OpenGL attributes to their initial
-    state, and might confuse your GPU driver. One star, not recommended.
-    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
-
-example_glfw_opengl3/
-    GLFW (Win32, Mac, Linux) + OpenGL3+/ES2/ES3 example (programmable pipeline, binding modern functions with GL3W).
-    This uses more modern OpenGL calls and custom shaders. 
-    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
-    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp
-	
-example_glfw_vulkan/
-    GLFW (Win32, Mac, Linux) + Vulkan example.
-    This is quite long and tedious, because: Vulkan.
-    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
-
-example_sdl_opengl2/
-    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
-    **Prefer using OPENGL3 code (with gl3w/glew/glad, you can replace the OpenGL function loader)**
-    SDL2 (Win32, Mac, Linux etc.) + OpenGL example (legacy, fixed pipeline).
-    This code is mostly provided as a reference to learn about ImGui integration, because it is shorter.
-    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
-    make things more complicated, will require your code to reset many OpenGL attributes to their initial
-    state, and might confuse your GPU driver. One star, not recommended. 
-    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl2.cpp
-
-example_sdl_opengl3/
-    SDL2 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example.
-    This uses more modern OpenGL calls and custom shaders. 
-    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
-    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
-
-example_sdl_vulkan/
-    SDL2 (Win32, Mac, Linux, etc.) + Vulkan example.
-    This is quite long and tedious, because: Vulkan.
-    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_vulkan.cpp
-
-example_allegro5/
-    Allegro 5 example.
-    = main.cpp + imgui_impl_allegro5.cpp
-
-example_freeglut_opengl2/
-    FreeGLUT + OpenGL2.
-    = main.cpp + imgui_impl_freeglut.cpp + imgui_impl_opengl2.cpp
-
-example_marmalade/
-    Marmalade example using IwGx.
-    = main.cpp + imgui_impl_marmalade.cpp
+    This is quite long and tedious, because: DirectX12.

examples/example_allegro5/README.md

@@ -1,22 +1,32 @@
 
 # Configuration
 
-Dear ImGui outputs 16-bit vertex indices by default. 
-Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile imgui with 32-bit indices.
+Dear ImGui outputs 16-bit vertex indices by default.
+Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile dear imgui with 32-bit indices.
 You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename.
 We are providing `imconfig_allegro5.h` that enables 32-bit indices.
 Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion.
 
 # How to Build
 
-- On Ubuntu 14.04+
+### On Ubuntu 14.04+
 
 ```bash
-g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. main.cpp ..\imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example
+g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. main.cpp ../imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_primitives -o allegro5_example
 ```
 
-- On Windows with Visual Studio's CLI
+### On Windows with Visual Studio's CLI
 
+You may install Allegro using vcpkg:
+```
+git clone https://github.com/Microsoft/vcpkg
+cd vcpkg
+.\bootstrap-vcpkg.bat
+.\vcpkg install allegro5
+.\vcpkg integrate install    ; optional, automatically register include/libs in Visual Studio
+```
+
+Build:
 ```
 set ALLEGRODIR=path_to_your_allegro5_folder
 cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" /I .. /I ..\.. main.cpp ..\imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib

examples/example_allegro5/example_allegro5.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
     <RootNamespace>example_allegro5</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">

examples/example_allegro5/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for Allegro 5
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for Allegro 5
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 #include <stdint.h>
 #include <allegro5/allegro.h>
@@ -22,20 +22,22 @@ int main(int, char**)
     al_register_event_source(queue, al_get_keyboard_event_source());
     al_register_event_source(queue, al_get_mouse_event_source());
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
     //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    ImGui_ImplAllegro5_Init(display);
 
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplAllegro5_Init(display);
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -65,7 +67,7 @@ int main(int, char**)
         while (al_get_next_event(queue, &ev))
         {
             ImGui_ImplAllegro5_ProcessEvent(&ev);
-            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) 
+            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
                 running = false;
             if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
             {
@@ -94,7 +96,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)

examples/example_apple_metal/Shared/AppDelegate.h

@@ -1,4 +1,3 @@
-
 #import <TargetConditionals.h>
 
 #if TARGET_OS_IPHONE

examples/example_apple_metal/Shared/AppDelegate.m

@@ -1,4 +1,3 @@
-
 #import "AppDelegate.h"
 
 @implementation AppDelegate

examples/example_apple_metal/Shared/Renderer.h

@@ -1,4 +1,3 @@
-
 #import <MetalKit/MetalKit.h>
 
 @interface Renderer : NSObject <MTKViewDelegate>

examples/example_apple_metal/Shared/Renderer.mm

@@ -1,4 +1,3 @@
-
 #import "Renderer.h"
 #import <Metal/Metal.h>
 
@@ -26,11 +25,9 @@
 
         IMGUI_CHECKVERSION();
         ImGui::CreateContext();
-        (void)ImGui::GetIO();
-        
-        ImGui_ImplMetal_Init(_device);
-
         ImGui::StyleColorsDark();
+
+        ImGui_ImplMetal_Init(_device);
     }
 
     return self;
@@ -52,7 +49,7 @@
     io.DeltaTime = 1 / float(view.preferredFramesPerSecond ?: 60);
 
     id<MTLCommandBuffer> commandBuffer = [self.commandQueue commandBuffer];
-    
+
     static bool show_demo_window = true;
     static bool show_another_window = false;
     static float clear_color[4] = { 0.28f, 0.36f, 0.5f, 1.0f };
@@ -89,7 +86,7 @@
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -115,13 +112,13 @@
         ImGui::Render();
         ImDrawData *drawData = ImGui::GetDrawData();
         ImGui_ImplMetal_RenderDrawData(drawData, commandBuffer, renderEncoder);
-        
+
         [renderEncoder popDebugGroup];
         [renderEncoder endEncoding];
 
         [commandBuffer presentDrawable:view.currentDrawable];
     }
-    
+
     [commandBuffer commit];
 }
 

examples/example_apple_metal/Shared/ViewController.h

@@ -1,4 +1,3 @@
-
 #import <Metal/Metal.h>
 #import <MetalKit/MetalKit.h>
 #import "Renderer.h"

examples/example_apple_metal/Shared/ViewController.mm

@@ -1,4 +1,3 @@
-
 #import "ViewController.h"
 #import "Renderer.h"
 #include "imgui.h"
@@ -21,9 +20,9 @@
 - (void)viewDidLoad
 {
     [super viewDidLoad];
-    
+
     self.mtkView.device = MTLCreateSystemDefaultDevice();
-    
+
     if (!self.mtkView.device) {
         NSLog(@"Metal is not supported");
         abort();
@@ -42,12 +41,12 @@
                                                                   owner:self
                                                                userInfo:nil];
     [self.view addTrackingArea:trackingArea];
-    
+
     // If we want to receive key events, we either need to be in the responder chain of the key view,
     // or else we can install a local monitor. The consequence of this heavy-handed approach is that
-    // we receive events for all controls, not just ImGui widgets. If we had native controls in our
-    // window, we'd want to be much more careful than just ingesting the complete event stream, though
-    // we do make an effort to be good citizens by passing along events when ImGui doesn't want to capture.
+    // we receive events for all controls, not just Dear ImGui widgets. If we had native controls in our
+    // window, we'd want to be much more careful than just ingesting the complete event stream, though we
+    // do make an effort to be good citizens by passing along events when Dear ImGui doesn't want to capture.
     NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventTypeScrollWheel;
     [NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event) {
         BOOL wantsCapture = ImGui_ImplOSX_HandleEvent(event, self.view);
@@ -56,9 +55,9 @@
         } else {
             return event;
         }
-        
+
     }];
-    
+
     ImGui_ImplOSX_Init();
 #endif
 }
@@ -97,7 +96,7 @@
     CGPoint touchLocation = [anyTouch locationInView:self.view];
     ImGuiIO &io = ImGui::GetIO();
     io.MousePos = ImVec2(touchLocation.x, touchLocation.y);
-    
+
     BOOL hasActiveTouch = NO;
     for (UITouch *touch in event.allTouches) {
         if (touch.phase != UITouchPhaseEnded && touch.phase != UITouchPhaseCancelled) {

examples/example_apple_metal/Shared/main.m

@@ -1,4 +1,3 @@
-
 #import <TargetConditionals.h>
 
 #if TARGET_OS_IPHONE

examples/example_apple_metal/example_apple_metal.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 48;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -231,14 +231,16 @@
 				TargetAttributes = {
 					8307E7C320E9F9C900473790 = {
 						CreatedOnToolsVersion = 9.4.1;
+						ProvisioningStyle = Automatic;
 					};
 					8307E7D920E9F9C900473790 = {
 						CreatedOnToolsVersion = 9.4.1;
+						ProvisioningStyle = Automatic;
 					};
 				};
 			};
 			buildConfigurationList = 8307E7B920E9F9C700473790 /* Build configuration list for PBXProject "example_apple_metal" */;
-			compatibilityVersion = "Xcode 9.3";
+			compatibilityVersion = "Xcode 8.0";
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
@@ -444,10 +446,7 @@
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = "$(SRCROOT)/iOS/Info-iOS.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
-				LD_RUNPATH_SEARCH_PATHS = (
-					"$(inherited)",
-					"@executable_path/Frameworks",
-				);
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-ios";
 				PRODUCT_NAME = example_apple_metal;
 				SDKROOT = iphoneos;
@@ -463,10 +462,7 @@
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = "$(SRCROOT)/iOS/Info-iOS.plist";
 				IPHONEOS_DEPLOYMENT_TARGET = 10.0;
-				LD_RUNPATH_SEARCH_PATHS = (
-					"$(inherited)",
-					"@executable_path/Frameworks",
-				);
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-ios";
 				PRODUCT_NAME = example_apple_metal;
 				SDKROOT = iphoneos;
@@ -483,11 +479,8 @@
 				COMBINE_HIDPI_IMAGES = YES;
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = "$(SRCROOT)/macOS/Info-macOS.plist";
-				LD_RUNPATH_SEARCH_PATHS = (
-					"$(inherited)",
-					"@executable_path/../Frameworks",
-				);
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-macos";
 				PRODUCT_NAME = example_apple_metal;
 				SDKROOT = macosx;
@@ -502,11 +495,8 @@
 				COMBINE_HIDPI_IMAGES = YES;
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = "$(SRCROOT)/macOS/Info-macOS.plist";
-				LD_RUNPATH_SEARCH_PATHS = (
-					"$(inherited)",
-					"@executable_path/../Frameworks",
-				);
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-macos";
 				PRODUCT_NAME = example_apple_metal;
 				SDKROOT = macosx;

examples/example_apple_opengl2/example_apple_opengl2.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 48;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -38,14 +38,11 @@
 		4080A99F20B034280036BA46 /* imgui_impl_osx.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; name = imgui_impl_osx.mm; path = ../imgui_impl_osx.mm; sourceTree = "<group>"; };
 		4080A9A020B034280036BA46 /* imgui_impl_opengl2.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_opengl2.h; path = ../imgui_impl_opengl2.h; sourceTree = "<group>"; };
 		4080A9A120B034280036BA46 /* imgui_impl_osx.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_osx.h; path = ../imgui_impl_osx.h; sourceTree = "<group>"; };
-		4080A9A420B0343C0036BA46 /* stb_truetype.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stb_truetype.h; path = ../../stb_truetype.h; sourceTree = "<group>"; };
 		4080A9A520B0343C0036BA46 /* imgui_internal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_internal.h; path = ../../imgui_internal.h; sourceTree = "<group>"; };
 		4080A9A620B0343C0036BA46 /* imgui_demo.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_demo.cpp; path = ../../imgui_demo.cpp; sourceTree = "<group>"; };
 		4080A9A720B0343C0036BA46 /* imgui.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui.cpp; path = ../../imgui.cpp; sourceTree = "<group>"; };
 		4080A9A820B0343C0036BA46 /* imgui.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui.h; path = ../../imgui.h; sourceTree = "<group>"; };
-		4080A9A920B0343C0036BA46 /* stb_rect_pack.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stb_rect_pack.h; path = ../../stb_rect_pack.h; sourceTree = "<group>"; };
 		4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_draw.cpp; path = ../../imgui_draw.cpp; sourceTree = "<group>"; };
-		4080A9AB20B0343C0036BA46 /* stb_textedit.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = stb_textedit.h; path = ../../stb_textedit.h; sourceTree = "<group>"; };
 		4080A9AC20B0343C0036BA46 /* imconfig.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imconfig.h; path = ../../imconfig.h; sourceTree = "<group>"; };
 		4080A9B220B034E40036BA46 /* Cocoa.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Cocoa.framework; path = System/Library/Frameworks/Cocoa.framework; sourceTree = SDKROOT; };
 		4080A9B420B034EA0036BA46 /* OpenGL.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = OpenGL.framework; path = System/Library/Frameworks/OpenGL.framework; sourceTree = SDKROOT; };
@@ -74,9 +71,6 @@
 				4080A9A620B0343C0036BA46 /* imgui_demo.cpp */,
 				4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */,
 				4080A9A520B0343C0036BA46 /* imgui_internal.h */,
-				4080A9A920B0343C0036BA46 /* stb_rect_pack.h */,
-				4080A9AB20B0343C0036BA46 /* stb_textedit.h */,
-				4080A9A420B0343C0036BA46 /* stb_truetype.h */,
 				4080A99E20B034280036BA46 /* imgui_impl_opengl2.cpp */,
 				4080A9A020B034280036BA46 /* imgui_impl_opengl2.h */,
 				4080A9A120B034280036BA46 /* imgui_impl_osx.h */,
@@ -135,11 +129,12 @@
 				TargetAttributes = {
 					4080A96A20B029B00036BA46 = {
 						CreatedOnToolsVersion = 9.3.1;
+						ProvisioningStyle = Automatic;
 					};
 				};
 			};
 			buildConfigurationList = 4080A96620B029B00036BA46 /* Build configuration list for PBXProject "example_apple_opengl2" */;
-			compatibilityVersion = "Xcode 9.3";
+			compatibilityVersion = "Xcode 8.0";
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
@@ -286,6 +281,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SYSTEM_HEADER_SEARCH_PATHS = ../libs/gl3w;
 				USER_HEADER_SEARCH_PATHS = ../..;
@@ -296,6 +292,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.12;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SYSTEM_HEADER_SEARCH_PATHS = ../libs/gl3w;
 				USER_HEADER_SEARCH_PATHS = ../..;

examples/example_apple_opengl2/main.mm

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for OSX + OpenGL2, using legacy fixed pipeline
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for OSX + OpenGL2, using legacy fixed pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 #include "imgui.h"
 #include "../imgui_impl_osx.h"
@@ -9,7 +9,7 @@
 #import <OpenGL/gl.h>
 #import <OpenGL/glu.h>
 
-//-----------------------------------------------------------------------------------	
+//-----------------------------------------------------------------------------------
 // ImGuiExampleView
 //-----------------------------------------------------------------------------------
 
@@ -29,7 +29,7 @@
 -(void)prepareOpenGL
 {
     [super prepareOpenGL];
-	
+
 #ifndef DEBUG
     GLint swapInterval = 1;
     [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
@@ -65,7 +65,7 @@
         ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
         ImGui::Checkbox("Another Window", &show_another_window);
 
-        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
         ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
         if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -91,18 +91,18 @@
 	ImGui::Render();
 	[[self openGLContext] makeCurrentContext];
 
-    ImGuiIO& io = ImGui::GetIO();
-    GLsizei width  = (GLsizei)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
-    GLsizei height = (GLsizei)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
+    ImDrawData* draw_data = ImGui::GetDrawData();
+    GLsizei width  = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
+    GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
     glViewport(0, 0, width, height);
 
 	glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
 	glClear(GL_COLOR_BUFFER_BIT);
-	ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+	ImGui_ImplOpenGL2_RenderDrawData(draw_data);
 
     // Present
     [[self openGLContext] flushBuffer];
-	
+
     if (!animationTimer)
         animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES];
 }
@@ -174,14 +174,14 @@
 {
     if (_window != nil)
         return (_window);
-	
+
     NSRect viewRect = NSMakeRect(100.0, 100.0, 100.0 + 1280.0, 100 + 720.0);
-	
+
     _window = [[NSWindow alloc] initWithContentRect:viewRect styleMask:NSWindowStyleMaskTitled|NSWindowStyleMaskMiniaturizable|NSWindowStyleMaskResizable|NSWindowStyleMaskClosable backing:NSBackingStoreBuffered defer:YES];
     [_window setTitle:@"Dear ImGui OSX+OpenGL2 Example"];
     [_window setOpaque:YES];
     [_window makeKeyAndOrderFront:NSApp];
-	
+
     return (_window);
 }
 
@@ -194,12 +194,12 @@
     appMenu = [[NSMenu alloc] initWithTitle:@"Dear ImGui OSX+OpenGL2 Example"];
     menuItem = [appMenu addItemWithTitle:@"Quit Dear ImGui OSX+OpenGL2 Example" action:@selector(terminate:) keyEquivalent:@"q"];
     [menuItem setKeyEquivalentModifierMask:NSEventModifierFlagCommand];
-	
+
     menuItem = [[NSMenuItem alloc] init];
     [menuItem setSubmenu:appMenu];
-	
+
     [mainMenuBar addItem:menuItem];
-	
+
     appMenu = nil;
     [NSApp setMainMenu:mainMenuBar];
 }
@@ -217,14 +217,14 @@
 
 	// Menu
     [self setupMenu];
-	
+
     NSOpenGLPixelFormatAttribute attrs[] =
     {
         NSOpenGLPFADoubleBuffer,
         NSOpenGLPFADepthSize, 32,
         0
     };
-	
+
     NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
     ImGuiExampleView* view = [[ImGuiExampleView alloc] initWithFrame:self.window.frame pixelFormat:format];
     format = nil;
@@ -233,23 +233,24 @@
         [view setWantsBestResolutionOpenGLSurface:YES];
 #endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
     [self.window setContentView:view];
-	
+
     if ([view openGLContext] == nil)
         NSLog(@"No OpenGL Context!");
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
 
-    ImGui_ImplOSX_Init();
-    ImGui_ImplOpenGL2_Init();
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplOSX_Init();
+    ImGui_ImplOpenGL2_Init();
+
     // Load Fonts
     // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.

examples/example_emscripten/Makefile

@@ -0,0 +1,60 @@
+#
+# Makefile to use with emscripten
+# See https://emscripten.org/docs/getting_started/downloads.html
+# for installation instructions. This Makefile assumes you have
+# loaded emscripten's environment.
+#
+# Running `make` will produce three files:
+#  - example_emscripten.html
+#  - example_emscripten.js
+#  - example_emscripten.wasm
+#
+# All three are needed to run the demo.
+
+CC = emcc
+CXX = em++
+
+EXE = example_emscripten.html
+SOURCES = main.cpp
+SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
+OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
+UNAME_S := $(shell uname -s)
+
+EMS = -s USE_SDL=2 -s WASM=1
+EMS += -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN_TRAP_MODE=clamp
+EMS += -s DISABLE_EXCEPTION_CATCHING=1 -s NO_EXIT_RUNTIME=0
+EMS += -s ASSERTIONS=1 -s NO_FILESYSTEM=1
+#EMS += -s SAFE_HEAP=1    ## Adds overhead
+
+CPPFLAGS = -I../ -I../../
+#CPPFLAGS += -g
+CPPFLAGS += -Wall -Wformat -Os
+CPPFLAGS += $(EMS)
+LIBS = $(EMS)
+LDFLAGS = --shell-file shell_minimal.html
+
+##---------------------------------------------------------------------
+## BUILD RULES
+##---------------------------------------------------------------------
+
+%.o:%.cpp
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../%.cpp
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../../%.cpp
+	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../libs/gl3w/GL/%.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
+
+all: $(EXE)
+	@echo Build complete for $(EXE)
+
+$(EXE): $(OBJS)
+	$(CXX) -o $@ $^ $(LIBS) $(LDFLAGS)
+
+clean:
+	rm -f $(EXE) $(OBJS) *.js *.wasm *.wasm.pre

examples/example_emscripten/README.md

@@ -0,0 +1,8 @@
+
+# How to Build
+
+- You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
+
+```
+em++ -I.. -I../.. main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp ../../imgui*.cpp -s USE_SDL=2 -s USE_WEBGL2=1 -s WASM=1 -s FULL_ES3=1 -s ALLOW_MEMORY_GROWTH=1 -s BINARYEN_TRAP_MODE=clamp --shell-file shell_minimal.html -o example-emscripten.html
+```

examples/example_emscripten/main.cpp

@@ -0,0 +1,170 @@
+// dear imgui: standalone example application for Emscripten, using SDL2 + OpenGL3
+// This is mostly the same code as the SDL2 + OpenGL3 example, simply with the modifications needed to run on Emscripten.
+// It is possible to combine both code into a single source file that will compile properly on Desktop and using Emscripten.
+// See https://github.com/ocornut/imgui/pull/2492 as an example on how to do just that.
+//
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+// (Emscripten is a C++-to-javascript compiler, used to publish executables for the web. See https://emscripten.org/)
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>
+#include <emscripten.h>
+#include <SDL.h>
+#include <SDL_opengles2.h>
+
+// Emscripten requires to have full control over the main loop. We're going to store our SDL book-keeping variables globally.
+// Having a single function that acts as a loop prevents us to store state in the stack of said function. So we need some location for this.
+SDL_Window*     g_Window = NULL;
+SDL_GLContext   g_GLContext = NULL;
+
+// For clarity, our main loop code is declared at the end.
+void main_loop(void*);
+
+int main(int, char**)
+{
+    // Setup SDL
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // For the browser using Emscripten, we are going to use WebGL1 with GL ES2. See the Makefile. for requirement details.
+    // It is very likely the generated file won't work in many browsers. Firefox is the only sure bet, but I have successfully
+    // run this code on Chrome for Android for example.
+    const char* glsl_version = "#version 100";
+    //const char* glsl_version = "#version 300 es";
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
+
+    // Create window with graphics context
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+    SDL_DisplayMode current;
+    SDL_GetCurrentDisplayMode(0, &current);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    g_Window = SDL_CreateWindow("Dear ImGui Emscripten example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    g_GLContext = SDL_GL_CreateContext(g_Window);
+    if (!g_GLContext)
+    {
+        fprintf(stderr, "Failed to initialize WebGL context!\n");
+        return 1;
+    }
+    SDL_GL_SetSwapInterval(1); // Enable vsync
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
+    // You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
+    io.IniFilename = NULL;
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForOpenGL(g_Window, g_GLContext);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // This function call won't return, and will engage in an infinite loop, processing events from the browser, and dispatching them.
+    emscripten_set_main_loop_arg(main_loop, NULL, 0, true);
+}
+
+void main_loop(void* arg)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IM_UNUSED(arg); // We can pass this argument as the second parameter of emscripten_set_main_loop_arg(), but we don't use that.
+
+    // Our state (make them static = more or less global) as a convenience to keep the example terse.
+    static bool show_demo_window = true;
+    static bool show_another_window = false;
+    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Poll and handle events (inputs, window resize, etc.)
+    // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+    // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+    // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+    // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+    SDL_Event event;
+    while (SDL_PollEvent(&event))
+    {
+        ImGui_ImplSDL2_ProcessEvent(&event);
+        // Capture events here, based on io.WantCaptureMouse and io.WantCaptureKeyboard
+    }
+
+    // Start the Dear ImGui frame
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplSDL2_NewFrame(g_Window);
+    ImGui::NewFrame();
+
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+    {
+        static float f = 0.0f;
+        static int counter = 0;
+
+        ImGui::Begin("Hello, world!");                                // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");                     // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);            // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);                  // Edit 1 float using a slider from 0.0f to 1.0f
+        ImGui::ColorEdit3("clear color", (float*)&clear_color);       // Edit 3 floats representing a color
+
+        if (ImGui::Button("Button"))                                  // Buttons return true when clicked (most widgets return true when edited/activated)
+            counter++;
+        ImGui::SameLine();
+        ImGui::Text("counter = %d", counter);
+
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);         // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
+
+    // Rendering
+    ImGui::Render();
+    SDL_GL_MakeCurrent(g_Window, g_GLContext);
+    glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+    glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+    glClear(GL_COLOR_BUFFER_BIT);
+    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+    SDL_GL_SwapWindow(g_Window);
+}

examples/example_emscripten/shell_minimal.html

@@ -0,0 +1,64 @@
+<!doctype html>
+<html lang="en-us">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
+    <title>Dear ImGui Emscripten example</title>
+    <style>
+        body { margin: 0; background-color: black }
+        .emscripten {
+            position: absolute;
+            top: 0px;
+            left: 0px;
+            margin: 0px;
+            border: 0;
+            width: 100%;
+            height: 100%;
+            overflow: hidden;
+            display: block;
+            image-rendering: optimizeSpeed;
+            image-rendering: -moz-crisp-edges;
+            image-rendering: -o-crisp-edges;
+            image-rendering: -webkit-optimize-contrast;
+            image-rendering: optimize-contrast;
+            image-rendering: crisp-edges;
+            image-rendering: pixelated;
+            -ms-interpolation-mode: nearest-neighbor;
+        }
+    </style>
+  </head>
+  <body>
+    <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()"></canvas>
+    <script type='text/javascript'>
+      var Module = {
+        preRun: [],
+        postRun: [],
+        print: (function() {
+            return function(text) {
+                text = Array.prototype.slice.call(arguments).join(' ');
+                console.log(text);
+            };
+        })(),
+        printErr: function(text) {
+            text = Array.prototype.slice.call(arguments).join(' ');
+            console.error(text);
+        },
+        canvas: (function() {
+            var canvas = document.getElementById('canvas');
+            //canvas.addEventListener("webglcontextlost", function(e) { alert('FIXME: WebGL context lost, please reload the page'); e.preventDefault(); }, false);
+            return canvas;
+        })(),
+        setStatus: function(text) {
+            console.log("status: " + text);
+        },
+        monitorRunDependencies: function(left) {
+            // no run dependencies to log
+        }
+      };
+      window.onerror = function() {
+        console.log("onerror: " + event);
+      };
+    </script>
+    {{{ SCRIPT }}}
+  </body>
+</html>

examples/example_glfw_metal/Makefile

@@ -0,0 +1,44 @@
+#
+# You will need GLFW (http://www.glfw.org):
+#   brew install glfw
+#
+
+#CXX = g++
+#CXX = clang++
+
+EXE = example_glfw_metal
+SOURCES = main.mm
+SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_metal.mm
+SOURCES += ../../imgui.cpp ../../imgui_widgets.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
+OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
+
+LIBS = -framework Metal -framework MetalKit -framework Cocoa -framework IOKit -framework CoreVideo -framework QuartzCore
+LIBS += -L/usr/local/lib -lglfw
+
+CXXFLAGS = -I../ -I../../ -I/usr/local/include
+CXXFLAGS += -Wall -Wformat
+CFLAGS = $(CXXFLAGS)
+
+%.o:%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../%.mm
+	$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
+
+%.o:%.mm
+	$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
+
+all: $(EXE)
+	@echo Build complete
+
+$(EXE): $(OBJS)
+	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
+
+clean:
+	rm -f $(EXE) $(OBJS)

examples/example_glfw_metal/main.mm

@@ -0,0 +1,166 @@
+// ImGui - standalone example application for GLFW + Metal, using programmable pipeline
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_metal.h"
+
+#define GLFW_INCLUDE_NONE
+#define GLFW_EXPOSE_NATIVE_COCOA
+#include <GLFW/glfw3.h>
+#include <GLFW/glfw3native.h>
+
+#import <Metal/Metal.h>
+#import <QuartzCore/QuartzCore.h>
+
+#include <stdio.h>
+
+static void glfw_error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
+}
+
+int main(int, char**)
+{
+    // Setup Dear ImGui binding
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+
+    // Setup style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Setup window
+    glfwSetErrorCallback(glfw_error_callback);
+    if (!glfwInit())
+        return 1;
+
+    // Create window with graphics context
+    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Metal example", NULL, NULL);
+    if (window == NULL)
+        return 1;
+
+    id <MTLDevice> device = MTLCreateSystemDefaultDevice();;
+    id <MTLCommandQueue> commandQueue = [device newCommandQueue];
+
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplMetal_Init(device);
+
+    NSWindow *nswin = glfwGetCocoaWindow(window);
+    CAMetalLayer *layer = [CAMetalLayer layer];
+    layer.device = device;
+    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
+    nswin.contentView.layer = layer;
+    nswin.contentView.wantsLayer = YES;
+
+    MTLRenderPassDescriptor *renderPassDescriptor = [MTLRenderPassDescriptor new];
+
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f};
+
+    // Main loop
+    while (!glfwWindowShouldClose(window))
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        glfwPollEvents();
+
+        int width, height;
+        glfwGetFramebufferSize(window, &width, &height);
+        layer.drawableSize = CGSizeMake(width, height);
+        id<CAMetalDrawable> drawable = [layer nextDrawable];
+
+        id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
+        renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
+        renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
+        renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
+        renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
+        id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+        [renderEncoder pushDebugGroup:@"ImGui demo"];
+
+        // Start the Dear ImGui frame
+        ImGui_ImplMetal_NewFrame(renderPassDescriptor);
+        ImGui_ImplGlfw_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
+
+        [renderEncoder popDebugGroup];
+        [renderEncoder endEncoding];
+
+        [commandBuffer presentDrawable:drawable];
+        [commandBuffer commit];
+    }
+
+    // Cleanup
+    ImGui_ImplMetal_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+
+    glfwDestroyWindow(window);
+    glfwTerminate();
+
+    return 0;
+}

examples/example_glfw_opengl2/Makefile

@@ -19,39 +19,46 @@ SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
-
 UNAME_S := $(shell uname -s)
 
+CXXFLAGS = -I../ -I../../
+CXXFLAGS += -g -Wall -Wformat
+LIBS =
+
+##---------------------------------------------------------------------
+## BUILD FLAGS PER PLATFORM
+##---------------------------------------------------------------------
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS = -lGL `pkg-config --static --libs glfw3`
+	LIBS += -lGL `pkg-config --static --libs glfw3`
 
-	CXXFLAGS = -I../ -I../../ `pkg-config --cflags glfw3`
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
-	LIBS = -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
-	#LIBS += -L/usr/local/lib -lglfw3
-	LIBS += -L/usr/local/lib -lglfw
+	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
+	LIBS += -L/usr/local/lib -L/opt/local/lib
+	#LIBS += -lglfw3
+	LIBS += -lglfw
 
-	CXXFLAGS = -I../ -I../../ -I/usr/local/include
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
-   ECHO_MESSAGE = "Windows"
-   LIBS = -lglfw3 -lgdi32 -lopengl32 -limm32
+	ECHO_MESSAGE = "MinGW"
+	LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32
 
-   CXXFLAGS = -I../ -I../../ -I../libs/gl3w `pkg-config --cflags glfw3`
-   CXXFLAGS += -Wall -Wformat
-   CFLAGS = $(CXXFLAGS)
+	CXXFLAGS += -I../libs/gl3w `pkg-config --cflags glfw3`
+	CFLAGS = $(CXXFLAGS)
 endif
 
+##---------------------------------------------------------------------
+## BUILD RULES
+##---------------------------------------------------------------------
 
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<

examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{9CDA7840-B7A5-496D-A527-E95571496D18}</ProjectGuid>
     <RootNamespace>example_glfw_opengl2</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -85,11 +90,11 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@@ -99,11 +104,11 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@@ -115,14 +120,14 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>
@@ -135,14 +140,14 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>

examples/example_glfw_opengl2/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for GLFW + OpenGL2, using legacy fixed pipeline
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for GLFW + OpenGL2, using legacy fixed pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
 
 // **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
@@ -10,8 +10,18 @@
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_opengl2.h"
 #include <stdio.h>
+#ifdef __APPLE__
+#define GL_SILENCE_DEPRECATION
+#endif
 #include <GLFW/glfw3.h>
 
+// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
+// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
+// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
+#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
+#pragma comment(lib, "legacy_stdio_definitions")
+#endif
+
 static void glfw_error_callback(int error, const char* description)
 {
     fprintf(stderr, "Glfw Error %d: %s\n", error, description);
@@ -29,23 +39,24 @@ int main(int, char**)
     glfwMakeContextCurrent(window);
     glfwSwapInterval(1); // Enable vsync
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    ImGui_ImplGlfw_InitForOpenGL(window, true);
-    ImGui_ImplOpenGL2_Init();
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL2_Init();
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -92,7 +103,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -121,8 +132,14 @@ int main(int, char**)
         glViewport(0, 0, display_w, display_h);
         glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
         glClear(GL_COLOR_BUFFER_BIT);
-        //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound, but prefer using the GL3+ code.
+
+        // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!), 
+        // you may need to backup/reset/restore current shader using the commented lines below.
+        //GLint last_program; 
+        //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+        //glUseProgram(0);
         ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
+        //glUseProgram(last_program);
 
         glfwMakeContextCurrent(window);
         glfwSwapBuffers(window);

examples/example_glfw_opengl3/Makefile

@@ -21,13 +21,17 @@ SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
+CXXFLAGS = -I../ -I../../
+CXXFLAGS += -g -Wall -Wformat
+LIBS =
+
 ##---------------------------------------------------------------------
 ## OPENGL LOADER
 ##---------------------------------------------------------------------
 
 ## Using OpenGL loader: gl3w [default]
 SOURCES += ../libs/gl3w/GL/gl3w.c
-CXXFLAGS = -I../libs/gl3w
+CXXFLAGS += -I../libs/gl3w
 
 ## Using OpenGL loader: glew
 ## (This assumes a system-wide installation)
@@ -44,31 +48,29 @@ CXXFLAGS = -I../libs/gl3w
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS = -lGL `pkg-config --static --libs glfw3`
+	LIBS += -lGL `pkg-config --static --libs glfw3`
 
-	CXXFLAGS += -I../ -I../../  `pkg-config --cflags glfw3`
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
-	LIBS = -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
-	#LIBS += -L/usr/local/lib -lglfw3
-	LIBS += -L/usr/local/lib -lglfw
+	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
+	LIBS += -L/usr/local/lib -L/opt/local/lib
+	#LIBS += -lglfw3
+	LIBS += -lglfw
 
-	CXXFLAGS += -I../ -I../../ -I/usr/local/include
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
-   ECHO_MESSAGE = "Windows"
-   LIBS = -lglfw3 -lgdi32 -lopengl32 -limm32
+	ECHO_MESSAGE = "MinGW"
+	LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32
 
-   CXXFLAGS += -I../ -I../../ `pkg-config --cflags glfw3`
-   CXXFLAGS += -Wall -Wformat
-   CFLAGS = $(CXXFLAGS)
+	CXXFLAGS += `pkg-config --cflags glfw3`
+	CFLAGS = $(CXXFLAGS)
 endif
 
 ##---------------------------------------------------------------------

examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{4a1fb5ea-22f5-42a8-ab92-1d2df5d47fb9}</ProjectGuid>
     <RootNamespace>example_glfw_opengl3</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -85,11 +90,11 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@@ -99,11 +104,11 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@@ -115,14 +120,14 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>
@@ -135,14 +140,14 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>

examples/example_glfw_opengl3/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for GLFW + OpenGL 3, using programmable pipeline
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for GLFW + OpenGL 3, using programmable pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
 
 #include "imgui.h"
@@ -7,7 +7,7 @@
 #include "imgui_impl_opengl3.h"
 #include <stdio.h>
 
-// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually. 
+// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually.
 // Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
 // You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
@@ -20,7 +20,15 @@
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
 
-#include <GLFW/glfw3.h> // Include glfw3.h after our OpenGL definitions
+// Include glfw3.h after our OpenGL definitions
+#include <GLFW/glfw3.h>
+
+// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
+// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
+// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
+#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
+#pragma comment(lib, "legacy_stdio_definitions")
+#endif
 
 static void glfw_error_callback(int error, const char* description)
 {
@@ -64,7 +72,9 @@ int main(int, char**)
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
     bool err = glewInit() != GLEW_OK;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
-    bool err = gladLoadGL() != 0;
+    bool err = gladLoadGL() == 0;
+#else
+    bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
 #endif
     if (err)
     {
@@ -72,20 +82,21 @@ int main(int, char**)
         return 1;
     }
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    ImGui_ImplGlfw_InitForOpenGL(window, true);
-    ImGui_ImplOpenGL3_Init(glsl_version);
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGlfw_InitForOpenGL(window, true);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
     // Load Fonts
     // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
     // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
@@ -160,14 +171,12 @@ int main(int, char**)
         // Rendering
         ImGui::Render();
         int display_w, display_h;
-        glfwMakeContextCurrent(window);
         glfwGetFramebufferSize(window, &display_w, &display_h);
         glViewport(0, 0, display_w, display_h);
         glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
         glClear(GL_COLOR_BUFFER_BIT);
         ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
 
-        glfwMakeContextCurrent(window);
         glfwSwapBuffers(window);
     }
 

examples/example_glfw_vulkan/CMakeLists.txt

@@ -1,3 +1,8 @@
+# Example usage:
+#  mkdir build
+#  cd build
+#  cmake -g "Visual Studio 14 2015" ..
+
 cmake_minimum_required(VERSION 2.8)
 project(imgui_example_glfw_vulkan C CXX)
 
@@ -18,7 +23,7 @@ option(GLFW_DOCUMENT_INTERNALS "Include internals in documentation" OFF)
 add_subdirectory(${GLFW_DIR} binary_dir EXCLUDE_FROM_ALL)
 include_directories(${GLFW_DIR}/include)
 
-# ImGui
+# Dear ImGui
 set(IMGUI_DIR ../../)
 include_directories(${IMGUI_DIR} ..)
 
@@ -32,5 +37,5 @@ include_directories(${GLFW_DIR}/deps)
 
 file(GLOB sources *.cpp)
 
-add_executable(example_glfw_vulkan ${sources} ${IMGUI_DIR}/examples/imgui_impl_glfw.cpp ${IMGUI_DIR}/examples/imgui_impl_vulkan.cpp ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp)
+add_executable(example_glfw_vulkan ${sources} ${IMGUI_DIR}/examples/imgui_impl_glfw.cpp ${IMGUI_DIR}/examples/imgui_impl_vulkan.cpp ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp ${IMGUI_DIR}/imgui_widgets.cpp)
 target_link_libraries(example_glfw_vulkan ${LIBRARIES})

examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{57E2DF5A-6FC8-45BB-99DD-91A18C646E80}</ProjectGuid>
     <RootNamespace>example_glfw_vulkan</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -85,11 +90,11 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib32;$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib32;..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>vulkan-1.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@@ -99,11 +104,11 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib;$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib;..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>vulkan-1.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@@ -115,14 +120,14 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib32;$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib32;..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>vulkan-1.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>
@@ -135,14 +140,14 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;$(SolutionDir)\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%VULKAN_SDK%\include;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib;$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>%VULKAN_SDK%\lib;..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>vulkan-1.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
       <IgnoreSpecificDefaultLibraries>
@@ -153,6 +158,7 @@
     <ClCompile Include="..\..\imgui.cpp" />
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
     <ClCompile Include="..\imgui_impl_glfw.cpp" />
     <ClCompile Include="..\imgui_impl_vulkan.cpp" />
     <ClCompile Include="main.cpp" />

examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj.filters

@@ -28,6 +28,9 @@
     <ClCompile Include="..\imgui_impl_vulkan.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_widgets.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">

examples/example_glfw_vulkan/glsl_shader.frag

@@ -3,7 +3,7 @@ layout(location = 0) out vec4 fColor;
 
 layout(set=0, binding=0) uniform sampler2D sTexture;
 
-layout(location = 0) in struct{
+layout(location = 0) in struct {
     vec4 Color;
     vec2 UV;
 } In;

examples/example_glfw_vulkan/glsl_shader.vert

@@ -3,16 +3,16 @@ layout(location = 0) in vec2 aPos;
 layout(location = 1) in vec2 aUV;
 layout(location = 2) in vec4 aColor;
 
-layout(push_constant) uniform uPushConstant{
+layout(push_constant) uniform uPushConstant {
     vec2 uScale;
     vec2 uTranslate;
 } pc;
 
-out gl_PerVertex{
+out gl_PerVertex {
     vec4 gl_Position;
 };
 
-layout(location = 0) out struct{
+layout(location = 0) out struct {
     vec4 Color;
     vec2 UV;
 } Out;
@@ -21,5 +21,5 @@ void main()
 {
     Out.Color = aColor;
     Out.UV = aUV;
-    gl_Position = vec4(aPos*pc.uScale+pc.uTranslate, 0, 1);
+    gl_Position = vec4(aPos * pc.uScale + pc.uTranslate, 0, 1);
 }

examples/example_glfw_vulkan/main.cpp

@@ -1,5 +1,12 @@
-// ImGui - standalone example application for Glfw + Vulkan
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for Glfw + Vulkan
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
+// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
+//   You will use those if you want to use this rendering back-end in your engine/app.
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+//   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
+// Read comments in imgui_impl_vulkan.h.
 
 #include "imgui.h"
 #include "imgui_impl_glfw.h"
@@ -11,24 +18,33 @@
 #include <GLFW/glfw3.h>
 #include <vulkan/vulkan.h>
 
+// [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
+// To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
+// Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
+#if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
+#pragma comment(lib, "legacy_stdio_definitions")
+#endif
+
 //#define IMGUI_UNLIMITED_FRAME_RATE
 #ifdef _DEBUG
 #define IMGUI_VULKAN_DEBUG_REPORT
 #endif
 
-static VkAllocationCallbacks*       g_Allocator = NULL;
-static VkInstance                   g_Instance = VK_NULL_HANDLE;
-static VkPhysicalDevice             g_PhysicalDevice = VK_NULL_HANDLE;
-static VkDevice                     g_Device = VK_NULL_HANDLE;
-static uint32_t                     g_QueueFamily = (uint32_t)-1;
-static VkQueue                      g_Queue = VK_NULL_HANDLE;
-static VkDebugReportCallbackEXT     g_DebugReport = VK_NULL_HANDLE;
-static VkPipelineCache              g_PipelineCache = VK_NULL_HANDLE;
-static VkDescriptorPool             g_DescriptorPool = VK_NULL_HANDLE;
+static VkAllocationCallbacks*   g_Allocator = NULL;
+static VkInstance               g_Instance = VK_NULL_HANDLE;
+static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
+static VkDevice                 g_Device = VK_NULL_HANDLE;
+static uint32_t                 g_QueueFamily = (uint32_t)-1;
+static VkQueue                  g_Queue = VK_NULL_HANDLE;
+static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
+static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
 
-static ImGui_ImplVulkanH_WindowData g_WindowData;
-static bool                         g_ResizeWanted = false;
-static int                          g_ResizeWidth = 0, g_ResizeHeight = 0;
+static ImGui_ImplVulkanH_Window g_MainWindowData;
+static int                      g_MinImageCount = 2;
+static bool                     g_SwapChainRebuild = false;
+static int                      g_SwapChainResizeWidth = 0;
+static int                      g_SwapChainResizeHeight = 0;
 
 static void check_vk_result(VkResult err)
 {
@@ -92,6 +108,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
         // Create Vulkan Instance without any debug feature
         err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
         check_vk_result(err);
+        IM_UNUSED(g_DebugReport);
 #endif
     }
 
@@ -100,6 +117,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
         uint32_t gpu_count;
         err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
         check_vk_result(err);
+        IM_ASSERT(gpu_count > 0);
 
         VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
         err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
@@ -125,7 +143,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
                 break;
             }
         free(queues);
-        IM_ASSERT(g_QueueFamily != -1);
+        IM_ASSERT(g_QueueFamily != (uint32_t)-1);
     }
 
     // Create Logical Device (with 1 queue)
@@ -176,7 +194,9 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
     }
 }
 
-static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR surface, int width, int height)
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo. 
+// Your real engine/app may not use them.
+static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
 {
     wd->Surface = surface;
 
@@ -189,12 +209,12 @@ static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR
         exit(-1);
     }
 
-    // Get Surface Format
+    // Select Surface Format
     const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
     const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
     wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
 
-    // Get Present Mode
+    // Select Present Mode
 #ifdef IMGUI_UNLIMITED_FRAME_RATE
     VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
 #else
@@ -204,14 +224,12 @@ static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR
     //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
 
     // Create SwapChain, RenderPass, Framebuffer, etc.
-    ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
-    ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height);
+    IM_ASSERT(g_MinImageCount >= 2);
+    ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
 }
 
 static void CleanupVulkan()
 {
-    ImGui_ImplVulkanH_WindowData* wd = &g_WindowData;
-    ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
     vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
 
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
@@ -224,79 +242,86 @@ static void CleanupVulkan()
     vkDestroyInstance(g_Instance, g_Allocator);
 }
 
-static void FrameRender(ImGui_ImplVulkanH_WindowData* wd)
+static void CleanupVulkanWindow()
 {
-	VkResult err;
-
-	VkSemaphore& image_acquired_semaphore  = wd->Frames[wd->FrameIndex].ImageAcquiredSemaphore;
-	err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
-	check_vk_result(err);
-
-    ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[wd->FrameIndex];
-    {
-		err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);	// wait indefinitely instead of periodically checking
-		check_vk_result(err);
-
-		err = vkResetFences(g_Device, 1, &fd->Fence);
-		check_vk_result(err);
-	}
-	{
-		err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
-		check_vk_result(err);
-		VkCommandBufferBeginInfo info = {};
-		info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
-		info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
-		err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
-		check_vk_result(err);
-	}
-	{
-		VkRenderPassBeginInfo info = {};
-		info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
-		info.renderPass = wd->RenderPass;
-		info.framebuffer = wd->Framebuffer[wd->FrameIndex];
-		info.renderArea.extent.width = wd->Width;
-		info.renderArea.extent.height = wd->Height;
-		info.clearValueCount = 1;
-		info.pClearValues = &wd->ClearValue;
-		vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
-	}
-
-	// Record Imgui Draw Data and draw funcs into command buffer
-	ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
-
-	// Submit command buffer
-	vkCmdEndRenderPass(fd->CommandBuffer);
-	{
-		VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
-		VkSubmitInfo info = {};
-		info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
-		info.waitSemaphoreCount = 1;
-		info.pWaitSemaphores = &image_acquired_semaphore;
-		info.pWaitDstStageMask = &wait_stage;
-		info.commandBufferCount = 1;
-		info.pCommandBuffers = &fd->CommandBuffer;
-		info.signalSemaphoreCount = 1;
-		info.pSignalSemaphores = &fd->RenderCompleteSemaphore;
-
-		err = vkEndCommandBuffer(fd->CommandBuffer);
-		check_vk_result(err);
-		err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
-		check_vk_result(err);
-	}
+    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
 }
 
-static void FramePresent(ImGui_ImplVulkanH_WindowData* wd)
+static void FrameRender(ImGui_ImplVulkanH_Window* wd)
 {
-    ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[wd->FrameIndex];
-	VkPresentInfoKHR info = {};
-	info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
-	info.waitSemaphoreCount = 1;
-	info.pWaitSemaphores = &fd->RenderCompleteSemaphore;
-	info.swapchainCount = 1;
-	info.pSwapchains = &wd->Swapchain;
-	info.pImageIndices = &wd->FrameIndex;
-	VkResult err = vkQueuePresentKHR(g_Queue, &info);
-	check_vk_result(err);
+    VkResult err;
+
+    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
+    check_vk_result(err);
+
+    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
+    {
+        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
+        check_vk_result(err);
+
+        err = vkResetFences(g_Device, 1, &fd->Fence);
+        check_vk_result(err);
+    }
+    {
+        err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
+        check_vk_result(err);
+    }
+    {
+        VkRenderPassBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        info.renderPass = wd->RenderPass;
+        info.framebuffer = fd->Framebuffer;
+        info.renderArea.extent.width = wd->Width;
+        info.renderArea.extent.height = wd->Height;
+        info.clearValueCount = 1;
+        info.pClearValues = &wd->ClearValue;
+        vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
+    }
+
+    // Record Imgui Draw Data and draw funcs into command buffer
+    ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
+
+    // Submit command buffer
+    vkCmdEndRenderPass(fd->CommandBuffer);
+    {
+        VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+        VkSubmitInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        info.waitSemaphoreCount = 1;
+        info.pWaitSemaphores = &image_acquired_semaphore;
+        info.pWaitDstStageMask = &wait_stage;
+        info.commandBufferCount = 1;
+        info.pCommandBuffers = &fd->CommandBuffer;
+        info.signalSemaphoreCount = 1;
+        info.pSignalSemaphores = &render_complete_semaphore;
+
+        err = vkEndCommandBuffer(fd->CommandBuffer);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
+        check_vk_result(err);
+    }
+}
+
+static void FramePresent(ImGui_ImplVulkanH_Window* wd)
+{
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    VkPresentInfoKHR info = {};
+    info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+    info.waitSemaphoreCount = 1;
+    info.pWaitSemaphores = &render_complete_semaphore;
+    info.swapchainCount = 1;
+    info.pSwapchains = &wd->Swapchain;
+    info.pImageIndices = &wd->FrameIndex;
+    VkResult err = vkQueuePresentKHR(g_Queue, &info);
+    check_vk_result(err);
+    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
 }
 
 static void glfw_error_callback(int error, const char* description)
@@ -306,14 +331,14 @@ static void glfw_error_callback(int error, const char* description)
 
 static void glfw_resize_callback(GLFWwindow*, int w, int h)
 {
-    g_ResizeWanted = true;
-    g_ResizeWidth = w;
-	g_ResizeHeight = h;
+    g_SwapChainRebuild = true;
+    g_SwapChainResizeWidth = w;
+    g_SwapChainResizeHeight = h;
 }
 
 int main(int, char**)
 {
-	// Setup window
+    // Setup GLFW window
     glfwSetErrorCallback(glfw_error_callback);
     if (!glfwInit())
         return 1;
@@ -340,20 +365,22 @@ int main(int, char**)
     int w, h;
     glfwGetFramebufferSize(window, &w, &h);
     glfwSetFramebufferSizeCallback(window, glfw_resize_callback);
-    ImGui_ImplVulkanH_WindowData* wd = &g_WindowData;
-    SetupVulkanWindowData(wd, surface, w, h);
+    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+    SetupVulkanWindow(wd, surface, w, h);
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    // Setup GLFW binding
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
     ImGui_ImplGlfw_InitForVulkan(window, true);
-
-    // Setup Vulkan binding
     ImGui_ImplVulkan_InitInfo init_info = {};
     init_info.Instance = g_Instance;
     init_info.PhysicalDevice = g_PhysicalDevice;
@@ -363,16 +390,14 @@ int main(int, char**)
     init_info.PipelineCache = g_PipelineCache;
     init_info.DescriptorPool = g_DescriptorPool;
     init_info.Allocator = g_Allocator;
+    init_info.MinImageCount = g_MinImageCount;
+    init_info.ImageCount = wd->ImageCount;
     init_info.CheckVkResultFn = check_vk_result;
     ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
 
-    // Setup style
-    ImGui::StyleColorsDark();
-    //ImGui::StyleColorsClassic();
-
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -412,7 +437,7 @@ int main(int, char**)
 
         err = vkDeviceWaitIdle(g_Device);
         check_vk_result(err);
-        ImGui_ImplVulkan_InvalidateFontUploadObjects();
+        ImGui_ImplVulkan_DestroyFontUploadObjects();
     }
 
     bool show_demo_window = true;
@@ -428,11 +453,14 @@ int main(int, char**)
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
         glfwPollEvents();
-		if (g_ResizeWanted)
-		{
-			ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, g_ResizeWidth, g_ResizeHeight);
-			g_ResizeWanted = false;
-		}
+
+        if (g_SwapChainRebuild)
+        {
+            g_SwapChainRebuild = false;
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, g_SwapChainResizeWidth, g_SwapChainResizeHeight, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
+        }
 
         // Start the Dear ImGui frame
         ImGui_ImplVulkan_NewFrame();
@@ -454,7 +482,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -479,7 +507,7 @@ int main(int, char**)
         // Rendering
         ImGui::Render();
         memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
-		FrameRender(wd);
+        FrameRender(wd);
 
         FramePresent(wd);
     }
@@ -490,6 +518,8 @@ int main(int, char**)
     ImGui_ImplVulkan_Shutdown();
     ImGui_ImplGlfw_Shutdown();
     ImGui::DestroyContext();
+
+    CleanupVulkanWindow();
     CleanupVulkan();
 
     glfwDestroyWindow(window);

examples/example_glut_opengl2/Makefile

@@ -0,0 +1,68 @@
+#
+# Cross Platform Makefile
+# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
+#
+# Linux:
+#   apt-get install freeglut3-dev
+#
+
+#CXX = g++
+#CXX = clang++
+
+EXE = example_glut_opengl2
+SOURCES = main.cpp
+SOURCES += ../imgui_impl_glut.cpp ../imgui_impl_opengl2.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
+OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
+UNAME_S := $(shell uname -s)
+
+CXXFLAGS = -I../ -I../../
+CXXFLAGS += -g -Wall -Wformat
+LIBS =
+
+##---------------------------------------------------------------------
+## BUILD FLAGS PER PLATFORM
+##---------------------------------------------------------------------
+
+ifeq ($(UNAME_S), Linux) #LINUX
+	ECHO_MESSAGE = "Linux"
+	LIBS += -lGL -lglut
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(UNAME_S), Darwin) #APPLE
+	ECHO_MESSAGE = "Mac OS X"
+	LIBS += -framework OpenGL -framework GLUT
+	LIBS += -L/usr/local/lib -L/opt/local/lib
+
+	CXXFLAGS += -I/usr/local/include -I/opt/local/include
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
+	ECHO_MESSAGE = "MinGW"
+	LIBS += -lgdi32 -lopengl32 -limm32 -lglut
+	CFLAGS = $(CXXFLAGS)
+endif
+
+##---------------------------------------------------------------------
+## BUILD RULES
+##---------------------------------------------------------------------
+
+%.o:%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+all: $(EXE)
+	@echo Build complete for $(ECHO_MESSAGE)
+
+$(EXE): $(OBJS)
+	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
+
+clean:
+	rm -f $(EXE) $(OBJS)

examples/example_glut_opengl2/example_glut_opengl2.vcxproj

@@ -20,30 +20,35 @@
   </ItemGroup>
   <PropertyGroup Label="Globals">
     <ProjectGuid>{F90D0333-5FB1-440D-918D-DD39A1B5187E}</ProjectGuid>
-    <RootNamespace>example_freeglut_opengl2</RootNamespace>
+    <RootNamespace>example_glut_opengl2</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -154,7 +159,7 @@
     <ClCompile Include="..\..\imgui_demo.cpp" />
     <ClCompile Include="..\..\imgui_draw.cpp" />
     <ClCompile Include="..\..\imgui_widgets.cpp" />
-    <ClCompile Include="..\imgui_impl_freeglut.cpp" />
+    <ClCompile Include="..\imgui_impl_glut.cpp" />
     <ClCompile Include="..\imgui_impl_opengl2.cpp" />
     <ClCompile Include="main.cpp" />
   </ItemGroup>
@@ -162,7 +167,7 @@
     <ClInclude Include="..\..\imconfig.h" />
     <ClInclude Include="..\..\imgui.h" />
     <ClInclude Include="..\..\imgui_internal.h" />
-    <ClInclude Include="..\imgui_impl_freeglut.h" />
+    <ClInclude Include="..\imgui_impl_glut.h" />
     <ClInclude Include="..\imgui_impl_opengl2.h" />
   </ItemGroup>
   <ItemGroup>

examples/example_glut_opengl2/example_glut_opengl2.vcxproj.filters

@@ -22,7 +22,7 @@
     <ClCompile Include="..\..\imgui_draw.cpp">
       <Filter>imgui</Filter>
     </ClCompile>
-    <ClCompile Include="..\imgui_impl_freeglut.cpp">
+    <ClCompile Include="..\imgui_impl_glut.cpp">
       <Filter>sources</Filter>
     </ClCompile>
     <ClCompile Include="..\imgui_impl_opengl2.cpp">
@@ -42,7 +42,7 @@
     <ClInclude Include="..\..\imgui_internal.h">
       <Filter>imgui</Filter>
     </ClInclude>
-    <ClInclude Include="..\imgui_impl_freeglut.h">
+    <ClInclude Include="..\imgui_impl_glut.h">
       <Filter>sources</Filter>
     </ClInclude>
     <ClInclude Include="..\imgui_impl_opengl2.h">
@@ -55,4 +55,4 @@
       <Filter>sources</Filter>
     </None>
   </ItemGroup>
-</Project>
+</Project>

examples/example_glut_opengl2/main.cpp

@@ -1,11 +1,18 @@
-// ImGui - standalone example application for FreeGLUT + OpenGL2, using legacy fixed pipeline
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
-// (Using GLUT or FreeGLUT is not recommended unless you really miss the 90's)
+// dear imgui: standalone example application for GLUT/FreeGLUT + OpenGL2, using legacy fixed pipeline
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
+// !!! If someone or something is teaching you GLUT in 2019, you are being abused. Please show some resistance. !!!
+// !!! Nowadays, prefer using GLFW or SDL instead!
 
 #include "imgui.h"
-#include "../imgui_impl_freeglut.h"
+#include "../imgui_impl_glut.h"
 #include "../imgui_impl_opengl2.h"
-#include <GL/freeglut.h>
+#ifdef __APPLE__
+    #include <GLUT/glut.h>
+#else
+    #include <GL/freeglut.h>
+#endif
 
 #ifdef _MSC_VER
 #pragma warning (disable: 4505) // unreferenced local function has been removed
@@ -32,7 +39,7 @@ void my_display_code()
         ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
         ImGui::Checkbox("Another Window", &show_another_window);
 
-        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
         ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
         if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -57,9 +64,9 @@ void my_display_code()
 
 void glut_display_func()
 {
-    // Start the ImGui frame
+    // Start the Dear ImGui frame
     ImGui_ImplOpenGL2_NewFrame();
-    ImGui_ImplFreeGLUT_NewFrame();
+    ImGui_ImplGLUT_NewFrame();
 
     my_display_code();
 
@@ -82,35 +89,38 @@ void glut_display_func()
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
 
 int main(int argc, char** argv)
-{ 
+{
     // Create GLUT window
     glutInit(&argc, argv);
+#ifdef __FREEGLUT_EXT_H__
     glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
+#endif
     glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_MULTISAMPLE);
     glutInitWindowSize(1280, 720);
-    glutCreateWindow("Dear ImGui FreeGLUT+OpenGL2 Example");
+    glutCreateWindow("Dear ImGui GLUT+OpenGL2 Example");
 
     // Setup GLUT display function
-    // We will also call ImGui_ImplFreeGLUT_InstallFuncs() to get all the other functions installed for us, 
-    // otherwise it is possible to install our own functions and call the imgui_impl_freeglut.h functions ourselves.
+    // We will also call ImGui_ImplGLUT_InstallFuncs() to get all the other functions installed for us,
+    // otherwise it is possible to install our own functions and call the imgui_impl_glut.h functions ourselves.
     glutDisplayFunc(glut_display_func);
 
-    // Setup ImGui binding
+    // Setup Dear ImGui context
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
 
-    ImGui_ImplFreeGLUT_Init();
-    ImGui_ImplFreeGLUT_InstallFuncs();
-    ImGui_ImplOpenGL2_Init();
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplGLUT_Init();
+    ImGui_ImplGLUT_InstallFuncs();
+    ImGui_ImplOpenGL2_Init();
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -127,7 +137,7 @@ int main(int argc, char** argv)
 
     // Cleanup
     ImGui_ImplOpenGL2_Shutdown();
-    ImGui_ImplFreeGLUT_Shutdown();
+    ImGui_ImplGLUT_Shutdown();
     ImGui::DestroyContext();
 
     return 0;

examples/example_marmalade/main.cpp

@@ -1,8 +1,8 @@
-// ImGui - standalone example application for Marmalade
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for Marmalade
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 // Copyright (C) 2015 by Giovanni Zito
-// This file is part of ImGui
+// This file is part of Dear ImGui
 
 #include "imgui.h"
 #include "imgui_impl_marmalade.h"
@@ -16,20 +16,22 @@ int main(int, char**)
 {
     IwGxInit();
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
     //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    ImGui_Marmalade_Init(true);
 
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_Marmalade_Init(true);
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -79,7 +81,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)

examples/example_null/Makefile

@@ -0,0 +1,59 @@
+#
+# Cross Platform Makefile
+# Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
+#
+
+EXE = example_null
+SOURCES = main.cpp
+SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
+OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
+UNAME_S := $(shell uname -s)
+
+CXXFLAGS = -I../ -I../../
+CXXFLAGS += -g -Wall -Wformat
+LIBS =
+
+##---------------------------------------------------------------------
+## BUILD FLAGS PER PLATFORM
+##---------------------------------------------------------------------
+
+ifeq ($(UNAME_S), Linux) #LINUX
+	ECHO_MESSAGE = "Linux"
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(UNAME_S), Darwin) #APPLE
+	ECHO_MESSAGE = "Mac OS X"
+	CFLAGS = $(CXXFLAGS)
+endif
+
+ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
+	ECHO_MESSAGE = "MinGW"
+	CFLAGS = $(CXXFLAGS)
+endif
+
+##---------------------------------------------------------------------
+## BUILD RULES
+##---------------------------------------------------------------------
+
+%.o:%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../../%.cpp
+	$(CXX) $(CXXFLAGS) -c -o $@ $<
+
+%.o:../libs/gl3w/GL/%.c
+# %.o:../libs/glad/src/%.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+all: $(EXE)
+	@echo Build complete for $(ECHO_MESSAGE)
+
+$(EXE): $(OBJS)
+	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
+
+clean:
+	rm -f $(EXE) $(OBJS)

examples/example_null/main.cpp

@@ -1,4 +1,6 @@
-// ImGui - null/dummy example application (compile and link imgui with no inputs, no outputs)
+// dear imgui: null/dummy example application
+// (compile and link imgui, create context, run headless with NO INPUTS, NO GRAPHICS OUTPUT)
+// This is useful to test building, but you cannot interact with anything here!
 #include "imgui.h"
 #include <stdio.h>
 
@@ -13,7 +15,7 @@ int main(int, char**)
     int tex_w, tex_h;
     io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_w, &tex_h);
 
-    for (int n = 0; n < 50; n++)
+    for (int n = 0; n < 20; n++)
     {
         printf("NewFrame() %d\n", n);
         io.DisplaySize = ImVec2(1920, 1080);

examples/example_sdl_opengl2/Makefile

@@ -15,40 +15,49 @@
 #CXX = clang++
 
 EXE = example_sdl_opengl2
-SOURCES = main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
+SOURCES = main.cpp
+SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
-
 UNAME_S := $(shell uname -s)
 
+CXXFLAGS = -I../ -I../../
+CXXFLAGS += -g -Wall -Wformat
+LIBS =
+
+##---------------------------------------------------------------------
+## BUILD FLAGS PER PLATFORM
+##---------------------------------------------------------------------
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS = -lGL -ldl `sdl2-config --libs`
+	LIBS += -lGL -ldl `sdl2-config --libs`
 
-	CXXFLAGS = -I ../ -I../../  `sdl2-config --cflags`
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += `sdl2-config --cflags`
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
-	LIBS = -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
+	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
+	LIBS += -L/usr/local/lib -L/opt/local/lib
 
-	CXXFLAGS = -I ../ -I../../ -I/usr/local/include `sdl2-config --cflags`
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += `sdl2-config --cflags`
+	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
-   ECHO_MESSAGE = "Windows"
-   LIBS = -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
+	ECHO_MESSAGE = "MinGW"
+	LIBS += -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
 
-   CXXFLAGS = -I ../ -I../../ `pkg-config --cflags sdl2`
-   CXXFLAGS += -Wall -Wformat
-   CFLAGS = $(CXXFLAGS)
+	CXXFLAGS += `pkg-config --cflags sdl2`
+	CFLAGS = $(CXXFLAGS)
 endif
 
+##---------------------------------------------------------------------
+## BUILD RULES
+##---------------------------------------------------------------------
 
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<

examples/example_sdl_opengl2/README.md

@@ -4,8 +4,11 @@
 - On Windows with Visual Studio's CLI
 
 ```
-set SDL2DIR=path_to_your_sdl2_folder
-cl /Zi /MD /I %SDL2DIR%\include /I .. /I ..\.. main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /link /LIBPATH:%SDL2DIR%\lib SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+set SDL2_DIR=path_to_your_sdl2_folder
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+#          ^^ include paths                  ^^ source files                                                           ^^ output exe                    ^^ output dir   ^^ libraries
+# or for 64-bit:
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
 ```
 
 - On Linux and similar Unixes

examples/example_sdl_opengl2/build_win32.bat

@@ -1,3 +1,8 @@
 @REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
-mkdir Debug
-cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\gl3w /I %SDL2_DIR%\include *.cpp ..\imgui_impl_opengl2.cpp ..\imgui_impl_sdl.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+set OUT_DIR=Debug
+set OUT_EXE=example_sdl_opengl2
+set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include
+set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp
+set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib
+mkdir %OUT_DIR%
+cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console

examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj

@@ -19,31 +19,36 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{94E991D0-790A-4DAF-B442-AAADE3233C75}</ProjectGuid>
+    <ProjectGuid>{2AE17FDE-F7F3-4CAC-ADAB-0710EDA4F741}</ProjectGuid>
     <RootNamespace>example_sdl_opengl2</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -85,7 +90,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -99,7 +104,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -115,7 +120,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
@@ -135,7 +140,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>

examples/example_sdl_opengl2/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for SDL2 + OpenGL
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for SDL2 + OpenGL
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
 
 // **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
@@ -16,7 +16,7 @@
 int main(int, char**)
 {
     // Setup SDL
-    if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
         return -1;
@@ -28,28 +28,30 @@ int main(int, char**)
     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
-    SDL_DisplayMode current;
-    SDL_GetCurrentDisplayMode(0, &current);
-    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
     SDL_GLContext gl_context = SDL_GL_CreateContext(window);
+    SDL_GL_MakeCurrent(window, gl_context);
     SDL_GL_SetSwapInterval(1); // Enable vsync
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
-    ImGui_ImplOpenGL2_Init();
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
+    ImGui_ImplOpenGL2_Init();
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -103,7 +105,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)

examples/example_sdl_opengl3/Makefile

@@ -21,13 +21,17 @@ SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 
+CXXFLAGS = -I../ -I../../
+CXXFLAGS += -g -Wall -Wformat
+LIBS =
+
 ##---------------------------------------------------------------------
 ## OPENGL LOADER
 ##---------------------------------------------------------------------
 
 ## Using OpenGL loader: gl3w [default]
 SOURCES += ../libs/gl3w/GL/gl3w.c
-CXXFLAGS = -I../libs/gl3w
+CXXFLAGS += -I../libs/gl3w
 
 ## Using OpenGL loader: glew
 ## (This assumes a system-wide installation)
@@ -44,28 +48,27 @@ CXXFLAGS = -I../libs/gl3w
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS = -lGL -ldl `sdl2-config --libs`
+	LIBS += -lGL -ldl `sdl2-config --libs`
 
-	CXXFLAGS = -I../ -I../../ -I../libs/gl3w `sdl2-config --cflags`
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += -I../libs/gl3w `sdl2-config --cflags`
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
-	LIBS = -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
+	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
+	LIBS += -L/usr/local/lib -L/opt/local/lib
 
-	CXXFLAGS = -I../ -I../../ -I../libs/gl3w -I/usr/local/include `sdl2-config --cflags`
-	CXXFLAGS += -Wall -Wformat
+	CXXFLAGS += -I../libs/gl3w `sdl2-config --cflags`
+	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
-   ECHO_MESSAGE = "Windows"
-   LIBS = -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
+   ECHO_MESSAGE = "MinGW"
+   LIBS += -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
 
-   CXXFLAGS = -I../ -I../../ -I../libs/gl3w `pkg-config --cflags sdl2`
-   CXXFLAGS += -Wall -Wformat
+   CXXFLAGS += -I../libs/gl3w `pkg-config --cflags sdl2`
    CFLAGS = $(CXXFLAGS)
 endif
 

examples/example_sdl_opengl3/README.md

@@ -4,8 +4,11 @@
 - On Windows with Visual Studio's CLI
 
 ```
-set SDL2DIR=path_to_your_sdl2_folder
-cl /Zi /MD /I .. /I ..\.. /I ..\libs\gl3w /I %SDL2DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /link /libpath:%SDL2DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+set SDL2_DIR=path_to_your_sdl2_folder
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+#          ^^ include paths                                 ^^ source files                                                                                  ^^ output exe                    ^^ output dir   ^^ libraries
+# or for 64-bit:
+cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
 ```
 
 - On Linux and similar Unixes

examples/example_sdl_opengl3/build_win32.bat

@@ -1,3 +1,8 @@
 @REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
-mkdir Debug
-cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\gl3w /I %SDL2_DIR%\include *.cpp ..\imgui_impl_opengl3.cpp ..\imgui_impl_sdl.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+set OUT_DIR=Debug
+set OUT_EXE=example_sdl_opengl3
+set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w
+set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c
+set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib
+mkdir %OUT_DIR%
+cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console

examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{BBAEB705-1669-40F3-8567-04CF6A991F4C}</ProjectGuid>
     <RootNamespace>example_sdl_opengl3</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -85,7 +90,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -99,7 +104,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -115,7 +120,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
@@ -135,7 +140,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;$(SolutionDir)\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%SDL2_DIR%\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>

examples/example_sdl_opengl3/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for SDL2 + OpenGL
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for SDL2 + OpenGL
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
 // (GL3W is a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc.)
 
@@ -9,7 +9,7 @@
 #include <stdio.h>
 #include <SDL.h>
 
-// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually. 
+// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually.
 // Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
 // You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
@@ -25,7 +25,7 @@
 int main(int, char**)
 {
     // Setup SDL
-    if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
         return -1;
@@ -52,10 +52,10 @@ int main(int, char**)
     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
     SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
-    SDL_DisplayMode current;
-    SDL_GetCurrentDisplayMode(0, &current);
-    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
     SDL_GLContext gl_context = SDL_GL_CreateContext(window);
+    SDL_GL_MakeCurrent(window, gl_context);
     SDL_GL_SetSwapInterval(1); // Enable vsync
 
     // Initialize OpenGL loader
@@ -65,6 +65,8 @@ int main(int, char**)
     bool err = glewInit() != GLEW_OK;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
     bool err = gladLoadGL() == 0;
+#else
+    bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
 #endif
     if (err)
     {
@@ -72,22 +74,24 @@ int main(int, char**)
         return 1;
     }
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
-    ImGui_ImplOpenGL3_Init(glsl_version);
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -143,7 +147,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -167,7 +171,6 @@ int main(int, char**)
 
         // Rendering
         ImGui::Render();
-        SDL_GL_MakeCurrent(window, gl_context);
         glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
         glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
         glClear(GL_COLOR_BUFFER_BIT);

examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{BAE3D0B5-9695-4EB1-AD0F-75890EB4A3B3}</ProjectGuid>
     <RootNamespace>example_sdl_vulkan</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">

examples/example_sdl_vulkan/main.cpp

@@ -1,5 +1,12 @@
-// ImGui - standalone example application for SDL2 + Vulkan
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for SDL2 + Vulkan
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
+// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
+//   You will use those if you want to use this rendering back-end in your engine/app.
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+//   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
+// Read comments in imgui_impl_vulkan.h.
 
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
@@ -15,17 +22,21 @@
 #define IMGUI_VULKAN_DEBUG_REPORT
 #endif
 
-static VkAllocationCallbacks*       g_Allocator = NULL;
-static VkInstance                   g_Instance = VK_NULL_HANDLE;
-static VkPhysicalDevice             g_PhysicalDevice = VK_NULL_HANDLE;
-static VkDevice                     g_Device = VK_NULL_HANDLE;
-static uint32_t                     g_QueueFamily = (uint32_t)-1;
-static VkQueue                      g_Queue = VK_NULL_HANDLE;
-static VkDebugReportCallbackEXT     g_DebugReport = VK_NULL_HANDLE;
-static VkPipelineCache              g_PipelineCache = VK_NULL_HANDLE;
-static VkDescriptorPool             g_DescriptorPool = VK_NULL_HANDLE;
+static VkAllocationCallbacks*   g_Allocator = NULL;
+static VkInstance               g_Instance = VK_NULL_HANDLE;
+static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
+static VkDevice                 g_Device = VK_NULL_HANDLE;
+static uint32_t                 g_QueueFamily = (uint32_t)-1;
+static VkQueue                  g_Queue = VK_NULL_HANDLE;
+static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
+static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
 
-static ImGui_ImplVulkanH_WindowData g_WindowData;
+static ImGui_ImplVulkanH_Window g_MainWindowData;
+static uint32_t                 g_MinImageCount = 2;
+static bool                     g_SwapChainRebuild = false;
+static int                      g_SwapChainResizeWidth = 0;
+static int                      g_SwapChainResizeHeight = 0;
 
 static void check_vk_result(VkResult err)
 {
@@ -89,6 +100,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
         // Create Vulkan Instance without any debug feature
         err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
         check_vk_result(err);
+        IM_UNUSED(g_DebugReport);
 #endif
     }
 
@@ -97,6 +109,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
         uint32_t gpu_count;
         err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
         check_vk_result(err);
+        IM_ASSERT(gpu_count > 0);
 
         VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
         err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
@@ -122,7 +135,7 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
                 break;
             }
         free(queues);
-        IM_ASSERT(g_QueueFamily != -1);
+        IM_ASSERT(g_QueueFamily != (uint32_t)-1);
     }
 
     // Create Logical Device (with 1 queue)
@@ -173,7 +186,9 @@ static void SetupVulkan(const char** extensions, uint32_t extensions_count)
     }
 }
 
-static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR surface, int width, int height)
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo. 
+// Your real engine/app may not use them.
+static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
 {
     wd->Surface = surface;
 
@@ -186,28 +201,27 @@ static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR
         exit(-1);
     }
 
-    // Get Surface Format
+    // Select Surface Format
     const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
     const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
     wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
 
-    // Get Present Mode
+    // Select Present Mode
 #ifdef IMGUI_UNLIMITED_FRAME_RATE
-    VkPresentModeKHR present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
 #else
-    VkPresentModeKHR present_mode = VK_PRESENT_MODE_FIFO_KHR;
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
 #endif
-    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_mode, 1);
+    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
+    //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
 
     // Create SwapChain, RenderPass, Framebuffer, etc.
-    ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
-    ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height);
+    IM_ASSERT(g_MinImageCount >= 2);
+    ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
 }
 
 static void CleanupVulkan()
 {
-    ImGui_ImplVulkanH_WindowData* wd = &g_WindowData;
-    ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
     vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
 
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
@@ -220,20 +234,26 @@ static void CleanupVulkan()
     vkDestroyInstance(g_Instance, g_Allocator);
 }
 
-static void FrameRender(ImGui_ImplVulkanH_WindowData* wd)
+static void CleanupVulkanWindow()
 {
-	VkResult err;
+    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
+}
 
-	VkSemaphore& image_acquired_semaphore  = wd->Frames[wd->FrameIndex].ImageAcquiredSemaphore;
-	err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
-	check_vk_result(err);
+static void FrameRender(ImGui_ImplVulkanH_Window* wd)
+{
+    VkResult err;
 
-    ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[wd->FrameIndex];
+    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
+    check_vk_result(err);
+
+    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
     {
-		err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);	// wait indefinitely instead of periodically checking
+        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
         check_vk_result(err);
 
-		err = vkResetFences(g_Device, 1, &fd->Fence);
+        err = vkResetFences(g_Device, 1, &fd->Fence);
         check_vk_result(err);
     }
     {
@@ -249,7 +269,7 @@ static void FrameRender(ImGui_ImplVulkanH_WindowData* wd)
         VkRenderPassBeginInfo info = {};
         info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
         info.renderPass = wd->RenderPass;
-		info.framebuffer = wd->Framebuffer[wd->FrameIndex];
+        info.framebuffer = fd->Framebuffer;
         info.renderArea.extent.width = wd->Width;
         info.renderArea.extent.height = wd->Height;
         info.clearValueCount = 1;
@@ -257,22 +277,22 @@ static void FrameRender(ImGui_ImplVulkanH_WindowData* wd)
         vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
     }
 
-	// Record Imgui Draw Data and draw funcs into command buffer
-	ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
+    // Record Imgui Draw Data and draw funcs into command buffer
+    ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
 
-	// Submit command buffer
+    // Submit command buffer
     vkCmdEndRenderPass(fd->CommandBuffer);
     {
         VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
         VkSubmitInfo info = {};
         info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
         info.waitSemaphoreCount = 1;
-		info.pWaitSemaphores = &image_acquired_semaphore;
+        info.pWaitSemaphores = &image_acquired_semaphore;
         info.pWaitDstStageMask = &wait_stage;
         info.commandBufferCount = 1;
         info.pCommandBuffers = &fd->CommandBuffer;
         info.signalSemaphoreCount = 1;
-        info.pSignalSemaphores = &fd->RenderCompleteSemaphore;
+        info.pSignalSemaphores = &render_complete_semaphore;
 
         err = vkEndCommandBuffer(fd->CommandBuffer);
         check_vk_result(err);
@@ -281,33 +301,33 @@ static void FrameRender(ImGui_ImplVulkanH_WindowData* wd)
     }
 }
 
-static void FramePresent(ImGui_ImplVulkanH_WindowData* wd)
+static void FramePresent(ImGui_ImplVulkanH_Window* wd)
 {
-    ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[wd->FrameIndex];
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
     VkPresentInfoKHR info = {};
     info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
     info.waitSemaphoreCount = 1;
-    info.pWaitSemaphores = &fd->RenderCompleteSemaphore;
+    info.pWaitSemaphores = &render_complete_semaphore;
     info.swapchainCount = 1;
     info.pSwapchains = &wd->Swapchain;
-	info.pImageIndices = &wd->FrameIndex;
-	VkResult err = vkQueuePresentKHR(g_Queue, &info);
+    info.pImageIndices = &wd->FrameIndex;
+    VkResult err = vkQueuePresentKHR(g_Queue, &info);
     check_vk_result(err);
+    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
 }
 
 int main(int, char**)
 {
     // Setup SDL
-    if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
     {
         printf("Error: %s\n", SDL_GetError());
         return 1;
     }
 
     // Setup window
-    SDL_DisplayMode current;
-    SDL_GetCurrentDisplayMode(0, &current);
-    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_VULKAN|SDL_WINDOW_RESIZABLE);
+    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
 
     // Setup Vulkan
     uint32_t extensions_count = 0;
@@ -329,18 +349,21 @@ int main(int, char**)
     // Create Framebuffers
     int w, h;
     SDL_GetWindowSize(window, &w, &h);
-    ImGui_ImplVulkanH_WindowData* wd = &g_WindowData;
-    SetupVulkanWindowData(wd, surface, w, h);
+    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+    SetupVulkanWindow(wd, surface, w, h);
 
-    // Setup ImGui binding
+    // Setup Dear ImGui context
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    // Setup SDL binding
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
     ImGui_ImplSDL2_InitForVulkan(window);
-
-    // Setup Vulkan binding
     ImGui_ImplVulkan_InitInfo init_info = {};
     init_info.Instance = g_Instance;
     init_info.PhysicalDevice = g_PhysicalDevice;
@@ -350,16 +373,14 @@ int main(int, char**)
     init_info.PipelineCache = g_PipelineCache;
     init_info.DescriptorPool = g_DescriptorPool;
     init_info.Allocator = g_Allocator;
+    init_info.MinImageCount = g_MinImageCount;
+    init_info.ImageCount = wd->ImageCount;
     init_info.CheckVkResultFn = check_vk_result;
     ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
 
-    // Setup style
-    ImGui::StyleColorsDark();
-    //ImGui::StyleColorsClassic();
-
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -399,7 +420,7 @@ int main(int, char**)
 
         err = vkDeviceWaitIdle(g_Device);
         check_vk_result(err);
-        ImGui_ImplVulkan_InvalidateFontUploadObjects();
+        ImGui_ImplVulkan_DestroyFontUploadObjects();
     }
 
     bool show_demo_window = true;
@@ -421,8 +442,20 @@ int main(int, char**)
             ImGui_ImplSDL2_ProcessEvent(&event);
             if (event.type == SDL_QUIT)
                 done = true;
-            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window)) 
-                ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, (int)event.window.data1, (int)event.window.data2);
+            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
+            {
+                g_SwapChainResizeWidth = (int)event.window.data1;
+                g_SwapChainResizeHeight = (int)event.window.data2;
+                g_SwapChainRebuild = true;
+            }
+        }
+
+        if (g_SwapChainRebuild)
+        {
+            g_SwapChainRebuild = false;
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, g_SwapChainResizeWidth, g_SwapChainResizeHeight, g_MinImageCount);
+            g_MainWindowData.FrameIndex = 0;
         }
 
         // Start the Dear ImGui frame
@@ -445,7 +478,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -470,8 +503,8 @@ int main(int, char**)
         // Rendering
         ImGui::Render();
         memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
-		FrameRender(wd);
-        
+        FrameRender(wd);
+
         FramePresent(wd);
     }
 
@@ -481,8 +514,11 @@ int main(int, char**)
     ImGui_ImplVulkan_Shutdown();
     ImGui_ImplSDL2_Shutdown();
     ImGui::DestroyContext();
-    SDL_DestroyWindow(window);
+
+    CleanupVulkanWindow();
     CleanupVulkan();
+
+    SDL_DestroyWindow(window);
     SDL_Quit();
 
     return 0;

examples/example_win32_directx10/example_win32_directx10.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{345A953E-A004-4648-B442-DC5F9F11068C}</ProjectGuid>
     <RootNamespace>example_win32_directx10</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -81,7 +86,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -94,7 +99,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -109,7 +114,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
@@ -127,7 +132,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>

examples/example_win32_directx10/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for DirectX 10
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for DirectX 10
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 #include "imgui.h"
 #include "imgui_impl_win32.h"
@@ -15,119 +15,51 @@ static ID3D10Device*            g_pd3dDevice = NULL;
 static IDXGISwapChain*          g_pSwapChain = NULL;
 static ID3D10RenderTargetView*  g_mainRenderTargetView = NULL;
 
-void CreateRenderTarget()
-{
-    ID3D10Texture2D* pBackBuffer;
-    g_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID*)&pBackBuffer);
-    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
-    pBackBuffer->Release();
-}
-
-void CleanupRenderTarget()
-{
-    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
-}
-
-HRESULT CreateDeviceD3D(HWND hWnd)
-{
-    // Setup swap chain
-    DXGI_SWAP_CHAIN_DESC sd;
-    ZeroMemory(&sd, sizeof(sd));
-    sd.BufferCount = 2;
-    sd.BufferDesc.Width = 0;
-    sd.BufferDesc.Height = 0;
-    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-    sd.BufferDesc.RefreshRate.Numerator = 60;
-    sd.BufferDesc.RefreshRate.Denominator = 1;
-    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
-    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
-    sd.OutputWindow = hWnd;
-    sd.SampleDesc.Count = 1;
-    sd.SampleDesc.Quality = 0;
-    sd.Windowed = TRUE;
-    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
-
-    UINT createDeviceFlags = 0;
-    //createDeviceFlags |= D3D10_CREATE_DEVICE_DEBUG;
-    if (D3D10CreateDeviceAndSwapChain(NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice) != S_OK)
-        return E_FAIL;
-
-    CreateRenderTarget();
-
-    return S_OK;
-}
-
-void CleanupDeviceD3D()
-{
-    CleanupRenderTarget();
-    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
-    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
-}
-
-extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
-LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
-{
-    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
-        return true;
-
-    switch (msg)
-    {
-    case WM_SIZE:
-        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
-        {
-            ImGui_ImplDX10_InvalidateDeviceObjects();
-            CleanupRenderTarget();
-            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
-            CreateRenderTarget();
-            ImGui_ImplDX10_CreateDeviceObjects();
-        }
-        return 0;
-    case WM_SYSCOMMAND:
-        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
-            return 0;
-        break;
-    case WM_DESTROY:
-        PostQuitMessage(0);
-        return 0;
-    }
-    return DefWindowProc(hWnd, msg, wParam, lParam);
-}
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 
+// Main code
 int main(int, char**)
 {
     // Create application window
     WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
-    RegisterClassEx(&wc);
-    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("Dear ImGui DirectX10 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX10 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
 
     // Initialize Direct3D
-    if (CreateDeviceD3D(hwnd) < 0)
+    if (!CreateDeviceD3D(hwnd))
     {
         CleanupDeviceD3D();
-        UnregisterClass(_T("ImGui Example"), wc.hInstance);
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
         return 1;
     }
 
     // Show the window
-    ShowWindow(hwnd, SW_SHOWDEFAULT);
-    UpdateWindow(hwnd);
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    ImGui_ImplWin32_Init(hwnd);
-    ImGui_ImplDX10_Init(g_pd3dDevice);
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX10_Init(g_pd3dDevice);
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -140,6 +72,7 @@ int main(int, char**)
     //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
     //IM_ASSERT(font != NULL);
 
+    // Our state
     bool show_demo_window = true;
     bool show_another_window = false;
     ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
@@ -154,10 +87,10 @@ int main(int, char**)
         // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-        if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
         {
-            TranslateMessage(&msg);
-            DispatchMessage(&msg);
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
             continue;
         }
 
@@ -181,7 +114,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -218,8 +151,86 @@ int main(int, char**)
     ImGui::DestroyContext();
 
     CleanupDeviceD3D();
-    DestroyWindow(hwnd);
-    UnregisterClass(_T("ImGui Example"), wc.hInstance);
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
 
     return 0;
 }
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.BufferCount = 2;
+    sd.BufferDesc.Width = 0;
+    sd.BufferDesc.Height = 0;
+    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.BufferDesc.RefreshRate.Numerator = 60;
+    sd.BufferDesc.RefreshRate.Denominator = 1;
+    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.OutputWindow = hWnd;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.Windowed = TRUE;
+    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+
+    UINT createDeviceFlags = 0;
+    //createDeviceFlags |= D3D10_CREATE_DEVICE_DEBUG;
+    if (D3D10CreateDeviceAndSwapChain(NULL, D3D10_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, D3D10_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice) != S_OK)
+        return false;
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+void CreateRenderTarget()
+{
+    ID3D10Texture2D* pBackBuffer;
+    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
+    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
+    pBackBuffer->Release();
+}
+
+void CleanupRenderTarget()
+{
+    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
+}
+
+// Win32 message handler
+extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            CleanupRenderTarget();
+            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
+            CreateRenderTarget();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

examples/example_win32_directx11/example_win32_directx11.vcxproj

@@ -27,23 +27,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -81,7 +85,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -94,7 +98,7 @@
     <ClCompile>
       <WarningLevel>Level4</WarningLevel>
       <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -109,7 +113,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>
@@ -127,7 +131,7 @@
       <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);$(DXSDK_DIR)Include;</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
       <BufferSecurityCheck>false</BufferSecurityCheck>
     </ClCompile>
     <Link>

examples/example_win32_directx11/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for DirectX 11
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui - standalone example application for DirectX 11
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 #include "imgui.h"
 #include "imgui_impl_win32.h"
@@ -15,122 +15,51 @@ static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
 static IDXGISwapChain*          g_pSwapChain = NULL;
 static ID3D11RenderTargetView*  g_mainRenderTargetView = NULL;
 
-void CreateRenderTarget()
-{
-    ID3D11Texture2D* pBackBuffer;
-    g_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer);
-    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
-    pBackBuffer->Release();
-}
-
-void CleanupRenderTarget()
-{
-    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
-}
-
-HRESULT CreateDeviceD3D(HWND hWnd)
-{
-    // Setup swap chain
-    DXGI_SWAP_CHAIN_DESC sd;
-    ZeroMemory(&sd, sizeof(sd));
-    sd.BufferCount = 2;
-    sd.BufferDesc.Width = 0;
-    sd.BufferDesc.Height = 0;
-    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-    sd.BufferDesc.RefreshRate.Numerator = 60;
-    sd.BufferDesc.RefreshRate.Denominator = 1;
-    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
-    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
-    sd.OutputWindow = hWnd;
-    sd.SampleDesc.Count = 1;
-    sd.SampleDesc.Quality = 0;
-    sd.Windowed = TRUE;
-    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
-
-    UINT createDeviceFlags = 0;
-    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
-    D3D_FEATURE_LEVEL featureLevel;
-    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
-    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
-        return E_FAIL;
-
-    CreateRenderTarget();
-
-    return S_OK;
-}
-
-void CleanupDeviceD3D()
-{
-    CleanupRenderTarget();
-    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
-    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
-    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
-}
-
-extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
-LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
-{
-    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
-        return true;
-
-    switch (msg)
-    {
-    case WM_SIZE:
-        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
-        {
-            ImGui_ImplDX11_InvalidateDeviceObjects();
-            CleanupRenderTarget();
-            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
-            CreateRenderTarget();
-            ImGui_ImplDX11_CreateDeviceObjects();
-        }
-        return 0;
-    case WM_SYSCOMMAND:
-        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
-            return 0;
-        break;
-    case WM_DESTROY:
-        PostQuitMessage(0);
-        return 0;
-    }
-    return DefWindowProc(hWnd, msg, wParam, lParam);
-}
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 
+// Main code
 int main(int, char**)
 {
     // Create application window
     WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
-    RegisterClassEx(&wc);
-    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("Dear ImGui DirectX11 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX11 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
 
     // Initialize Direct3D
-    if (CreateDeviceD3D(hwnd) < 0)
+    if (!CreateDeviceD3D(hwnd))
     {
         CleanupDeviceD3D();
-        UnregisterClass(_T("ImGui Example"), wc.hInstance);
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
         return 1;
     }
 
     // Show the window
-    ShowWindow(hwnd, SW_SHOWDEFAULT);
-    UpdateWindow(hwnd);
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
 
-    // Setup Dear ImGui binding
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    ImGui_ImplWin32_Init(hwnd);
-    ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
-
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -158,10 +87,10 @@ int main(int, char**)
         // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-        if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
         {
-            TranslateMessage(&msg);
-            DispatchMessage(&msg);
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
             continue;
         }
 
@@ -185,7 +114,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -222,8 +151,89 @@ int main(int, char**)
     ImGui::DestroyContext();
 
     CleanupDeviceD3D();
-    DestroyWindow(hwnd);
-    UnregisterClass(_T("ImGui Example"), wc.hInstance);
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
 
     return 0;
 }
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC sd;
+    ZeroMemory(&sd, sizeof(sd));
+    sd.BufferCount = 2;
+    sd.BufferDesc.Width = 0;
+    sd.BufferDesc.Height = 0;
+    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    sd.BufferDesc.RefreshRate.Numerator = 60;
+    sd.BufferDesc.RefreshRate.Denominator = 1;
+    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
+    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+    sd.OutputWindow = hWnd;
+    sd.SampleDesc.Count = 1;
+    sd.SampleDesc.Quality = 0;
+    sd.Windowed = TRUE;
+    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
+
+    UINT createDeviceFlags = 0;
+    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
+    D3D_FEATURE_LEVEL featureLevel;
+    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
+    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
+        return false;
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
+void CreateRenderTarget()
+{
+    ID3D11Texture2D* pBackBuffer;
+    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
+    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
+    pBackBuffer->Release();
+}
+
+void CleanupRenderTarget()
+{
+    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
+}
+
+// Win32 message handler
+extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            CleanupRenderTarget();
+            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
+            CreateRenderTarget();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

examples/example_win32_directx12/example_win32_directx12.vcxproj

@@ -21,7 +21,7 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{b4cf9797-519d-4afe-a8f4-5141a6b521d3}</ProjectGuid>
     <RootNamespace>example_win32_directx12</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.14393.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">

examples/example_win32_directx12/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for DirectX 12
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for DirectX 12
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // FIXME: 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*))
 
 #include "imgui.h"
@@ -36,17 +36,320 @@ static HANDLE                       g_hSwapChainWaitableObject = NULL;
 static ID3D12Resource*              g_mainRenderTargetResource[NUM_BACK_BUFFERS] = {};
 static D3D12_CPU_DESCRIPTOR_HANDLE  g_mainRenderTargetDescriptor[NUM_BACK_BUFFERS] = {};
 
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void CreateRenderTarget();
+void CleanupRenderTarget();
+void WaitForLastSubmittedFrame();
+FrameContext* WaitForNextFrameResources();
+void ResizeSwapChain(HWND hWnd, int width, int height);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+
+// Main code
+int main(int, char**)
+{
+    // Create application window
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX12 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+
+    // Initialize Direct3D
+    if (!CreateDeviceD3D(hwnd))
+    {
+        CleanupDeviceD3D();
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+        return 1;
+    }
+
+    // Show the window
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsClassic();
+
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT,
+        DXGI_FORMAT_R8G8B8A8_UNORM,
+        g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(),
+        g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
+
+    // Load Fonts
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+    // - Read 'misc/fonts/README.txt' for more instructions and details.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+    //IM_ASSERT(font != NULL);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    MSG msg;
+    ZeroMemory(&msg, sizeof(msg));
+    while (msg.message != WM_QUIT)
+    {
+        // Poll and handle messages (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        {
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
+            continue;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplDX12_NewFrame();
+        ImGui_ImplWin32_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        FrameContext* frameCtxt = WaitForNextFrameResources();
+        UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
+        frameCtxt->CommandAllocator->Reset();
+
+        D3D12_RESOURCE_BARRIER barrier = {};
+        barrier.Type                   = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
+        barrier.Flags                  = D3D12_RESOURCE_BARRIER_FLAG_NONE;
+        barrier.Transition.pResource   = g_mainRenderTargetResource[backBufferIdx];
+        barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
+        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
+        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_RENDER_TARGET;
+
+        g_pd3dCommandList->Reset(frameCtxt->CommandAllocator, NULL);
+        g_pd3dCommandList->ResourceBarrier(1, &barrier);
+        g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], (float*)&clear_color, 0, NULL);
+        g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
+        g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
+        ImGui::Render();
+        ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
+        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
+        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_PRESENT;
+        g_pd3dCommandList->ResourceBarrier(1, &barrier);
+        g_pd3dCommandList->Close();
+
+        g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
+
+        g_pSwapChain->Present(1, 0); // Present with vsync
+        //g_pSwapChain->Present(0, 0); // Present without vsync
+
+        UINT64 fenceValue = g_fenceLastSignaledValue + 1;
+        g_pd3dCommandQueue->Signal(g_fence, fenceValue);
+        g_fenceLastSignaledValue = fenceValue;
+        frameCtxt->FenceValue = fenceValue;
+    }
+
+    WaitForLastSubmittedFrame();
+    ImGui_ImplDX12_Shutdown();
+    ImGui_ImplWin32_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupDeviceD3D();
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    // Setup swap chain
+    DXGI_SWAP_CHAIN_DESC1 sd;
+    {
+        ZeroMemory(&sd, sizeof(sd));
+        sd.BufferCount = NUM_BACK_BUFFERS;
+        sd.Width = 0;
+        sd.Height = 0;
+        sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        sd.Flags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
+        sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
+        sd.SampleDesc.Count = 1;
+        sd.SampleDesc.Quality = 0;
+        sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
+        sd.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED;
+        sd.Scaling = DXGI_SCALING_STRETCH;
+        sd.Stereo = FALSE;
+    }
+
+    if (DX12_ENABLE_DEBUG_LAYER)
+    {
+        ID3D12Debug* dx12Debug = NULL;
+        if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&dx12Debug))))
+        {
+            dx12Debug->EnableDebugLayer();
+            dx12Debug->Release();
+        }
+    }
+
+    D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
+    if (D3D12CreateDevice(NULL, featureLevel, IID_PPV_ARGS(&g_pd3dDevice)) != S_OK)
+        return false;
+
+    {
+        D3D12_DESCRIPTOR_HEAP_DESC desc = {};
+        desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
+        desc.NumDescriptors = NUM_BACK_BUFFERS;
+        desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
+        desc.NodeMask = 1;
+        if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dRtvDescHeap)) != S_OK)
+            return false;
+
+        SIZE_T rtvDescriptorSize = g_pd3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
+        D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = g_pd3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart();
+        for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
+        {
+            g_mainRenderTargetDescriptor[i] = rtvHandle;
+            rtvHandle.ptr += rtvDescriptorSize;
+        }
+    }
+
+    {
+        D3D12_DESCRIPTOR_HEAP_DESC desc = {};
+        desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
+        desc.NumDescriptors = 1;
+        desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
+        if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dSrvDescHeap)) != S_OK)
+            return false;
+    }
+
+    {
+        D3D12_COMMAND_QUEUE_DESC desc = {};
+        desc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
+        desc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
+        desc.NodeMask = 1;
+        if (g_pd3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&g_pd3dCommandQueue)) != S_OK)
+            return false;
+    }
+
+    for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
+        if (g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&g_frameContext[i].CommandAllocator)) != S_OK)
+            return false;
+
+    if (g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, g_frameContext[0].CommandAllocator, NULL, IID_PPV_ARGS(&g_pd3dCommandList)) != S_OK ||
+        g_pd3dCommandList->Close() != S_OK)
+        return false;
+
+    if (g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&g_fence)) != S_OK)
+        return false;
+
+    g_fenceEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (g_fenceEvent == NULL)
+        return false;
+
+    {
+        IDXGIFactory4* dxgiFactory = NULL;
+        IDXGISwapChain1* swapChain1 = NULL;
+        if (CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)) != S_OK ||
+            dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1) != S_OK ||
+            swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain)) != S_OK)
+            return false;
+        swapChain1->Release();
+        dxgiFactory->Release();
+        g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
+        g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
+    }
+
+    CreateRenderTarget();
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    CleanupRenderTarget();
+    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
+    if (g_hSwapChainWaitableObject != NULL) { CloseHandle(g_hSwapChainWaitableObject); }
+    for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
+        if (g_frameContext[i].CommandAllocator) { g_frameContext[i].CommandAllocator->Release(); g_frameContext[i].CommandAllocator = NULL; }
+    if (g_pd3dCommandQueue) { g_pd3dCommandQueue->Release(); g_pd3dCommandQueue = NULL; }
+    if (g_pd3dCommandList) { g_pd3dCommandList->Release(); g_pd3dCommandList = NULL; }
+    if (g_pd3dRtvDescHeap) { g_pd3dRtvDescHeap->Release(); g_pd3dRtvDescHeap = NULL; }
+    if (g_pd3dSrvDescHeap) { g_pd3dSrvDescHeap->Release(); g_pd3dSrvDescHeap = NULL; }
+    if (g_fence) { g_fence->Release(); g_fence = NULL; }
+    if (g_fenceEvent) { CloseHandle(g_fenceEvent); g_fenceEvent = NULL; }
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+}
+
 void CreateRenderTarget()
 {
-    ID3D12Resource* pBackBuffer;
     for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
     {
+        ID3D12Resource* pBackBuffer = NULL;
         g_pSwapChain->GetBuffer(i, IID_PPV_ARGS(&pBackBuffer));
         g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, g_mainRenderTargetDescriptor[i]);
         g_mainRenderTargetResource[i] = pBackBuffer;
     }
 }
 
+void CleanupRenderTarget()
+{
+    WaitForLastSubmittedFrame();
+
+    for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
+        if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
+}
+
 void WaitForLastSubmittedFrame()
 {
     FrameContext* frameCtxt = &g_frameContext[g_frameIndex % NUM_FRAMES_IN_FLIGHT];
@@ -111,133 +414,7 @@ void ResizeSwapChain(HWND hWnd, int width, int height)
     assert(g_hSwapChainWaitableObject != NULL);
 }
 
-void CleanupRenderTarget()
-{
-    WaitForLastSubmittedFrame();
-
-    for (UINT i = 0; i < NUM_BACK_BUFFERS; i++)
-        if (g_mainRenderTargetResource[i]) { g_mainRenderTargetResource[i]->Release(); g_mainRenderTargetResource[i] = NULL; }
-}
-
-HRESULT CreateDeviceD3D(HWND hWnd)
-{
-    // Setup swap chain
-    DXGI_SWAP_CHAIN_DESC1 sd;
-    {
-        ZeroMemory(&sd, sizeof(sd));
-        sd.BufferCount = NUM_BACK_BUFFERS;
-        sd.Width = 0;
-        sd.Height = 0;
-        sd.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-        sd.Flags = DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT;
-        sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
-        sd.SampleDesc.Count = 1;
-        sd.SampleDesc.Quality = 0;
-        sd.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
-        sd.AlphaMode = DXGI_ALPHA_MODE_UNSPECIFIED;
-        sd.Scaling = DXGI_SCALING_STRETCH;
-        sd.Stereo = FALSE;
-    }
-
-    if (DX12_ENABLE_DEBUG_LAYER)
-    {
-        ID3D12Debug* dx12Debug = NULL;
-        if (SUCCEEDED(D3D12GetDebugInterface(IID_PPV_ARGS(&dx12Debug))))
-        {
-            dx12Debug->EnableDebugLayer();
-            dx12Debug->Release();
-        }
-    }
-
-    D3D_FEATURE_LEVEL featureLevel = D3D_FEATURE_LEVEL_11_0;
-    if (D3D12CreateDevice(NULL, featureLevel, IID_PPV_ARGS(&g_pd3dDevice)) != S_OK)
-        return E_FAIL;
-
-    {
-        D3D12_DESCRIPTOR_HEAP_DESC desc = {};
-        desc.Type           = D3D12_DESCRIPTOR_HEAP_TYPE_RTV;
-        desc.NumDescriptors = NUM_BACK_BUFFERS;
-        desc.Flags          = D3D12_DESCRIPTOR_HEAP_FLAG_NONE;
-        desc.NodeMask       = 1;
-        if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dRtvDescHeap)) != S_OK)
-            return E_FAIL;
-
-        SIZE_T rtvDescriptorSize = g_pd3dDevice->GetDescriptorHandleIncrementSize(D3D12_DESCRIPTOR_HEAP_TYPE_RTV);
-        D3D12_CPU_DESCRIPTOR_HANDLE rtvHandle = g_pd3dRtvDescHeap->GetCPUDescriptorHandleForHeapStart();
-        for (UINT i = 0; i < NUM_BACK_BUFFERS; i++) 
-        {
-            g_mainRenderTargetDescriptor[i] = rtvHandle;
-            rtvHandle.ptr += rtvDescriptorSize;
-        }
-    }
-
-    {
-        D3D12_DESCRIPTOR_HEAP_DESC desc = {};
-        desc.Type = D3D12_DESCRIPTOR_HEAP_TYPE_CBV_SRV_UAV;
-        desc.NumDescriptors = 1;
-        desc.Flags = D3D12_DESCRIPTOR_HEAP_FLAG_SHADER_VISIBLE;
-        if (g_pd3dDevice->CreateDescriptorHeap(&desc, IID_PPV_ARGS(&g_pd3dSrvDescHeap)) != S_OK)
-            return E_FAIL;
-    }
-
-    {
-        D3D12_COMMAND_QUEUE_DESC desc = {};
-        desc.Type     = D3D12_COMMAND_LIST_TYPE_DIRECT;
-        desc.Flags    = D3D12_COMMAND_QUEUE_FLAG_NONE;
-        desc.NodeMask = 1;
-        if (g_pd3dDevice->CreateCommandQueue(&desc, IID_PPV_ARGS(&g_pd3dCommandQueue)) != S_OK)
-            return E_FAIL;
-    }
-
-    for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
-        if (g_pd3dDevice->CreateCommandAllocator(D3D12_COMMAND_LIST_TYPE_DIRECT, IID_PPV_ARGS(&g_frameContext[i].CommandAllocator)) != S_OK)
-            return E_FAIL;
-
-    if (g_pd3dDevice->CreateCommandList(0, D3D12_COMMAND_LIST_TYPE_DIRECT, g_frameContext[0].CommandAllocator, NULL, IID_PPV_ARGS(&g_pd3dCommandList)) != S_OK ||
-        g_pd3dCommandList->Close() != S_OK)
-        return E_FAIL;
-
-    if (g_pd3dDevice->CreateFence(0, D3D12_FENCE_FLAG_NONE, IID_PPV_ARGS(&g_fence)) != S_OK)
-        return E_FAIL;
-
-    g_fenceEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
-    if (g_fenceEvent == NULL)
-        return E_FAIL;
-
-    {
-        IDXGIFactory4* dxgiFactory = NULL;
-        IDXGISwapChain1* swapChain1 = NULL;
-        if (CreateDXGIFactory1(IID_PPV_ARGS(&dxgiFactory)) != S_OK ||
-            dxgiFactory->CreateSwapChainForHwnd(g_pd3dCommandQueue, hWnd, &sd, NULL, NULL, &swapChain1) != S_OK ||
-            swapChain1->QueryInterface(IID_PPV_ARGS(&g_pSwapChain)) != S_OK)
-            return E_FAIL;
-        swapChain1->Release();
-        dxgiFactory->Release();
-        g_pSwapChain->SetMaximumFrameLatency(NUM_BACK_BUFFERS);
-        g_hSwapChainWaitableObject = g_pSwapChain->GetFrameLatencyWaitableObject();
-    }
-
-    CreateRenderTarget();
-
-    return S_OK;
-}
-
-void CleanupDeviceD3D()
-{
-    CleanupRenderTarget();
-    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
-    if (g_hSwapChainWaitableObject != NULL) { CloseHandle(g_hSwapChainWaitableObject); }
-    for (UINT i = 0; i < NUM_FRAMES_IN_FLIGHT; i++)
-        if (g_frameContext[i].CommandAllocator) { g_frameContext[i].CommandAllocator->Release(); g_frameContext[i].CommandAllocator = NULL; }
-    if (g_pd3dCommandQueue) { g_pd3dCommandQueue->Release(); g_pd3dCommandQueue = NULL; }
-    if (g_pd3dCommandList) { g_pd3dCommandList->Release(); g_pd3dCommandList = NULL; }
-    if (g_pd3dRtvDescHeap) { g_pd3dRtvDescHeap->Release(); g_pd3dRtvDescHeap = NULL; }
-    if (g_pd3dSrvDescHeap) { g_pd3dSrvDescHeap->Release(); g_pd3dSrvDescHeap = NULL; }
-    if (g_fence) { g_fence->Release(); g_fence = NULL; }
-    if (g_fenceEvent) { CloseHandle(g_fenceEvent); g_fenceEvent = NULL; }
-    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
-}
-
+// Win32 message handler
 extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
@@ -261,169 +438,8 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
             return 0;
         break;
     case WM_DESTROY:
-        PostQuitMessage(0);
+        ::PostQuitMessage(0);
         return 0;
     }
-    return DefWindowProc(hWnd, msg, wParam, lParam);
-}
-
-int main(int, char**)
-{
-    // Create application window
-    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
-    RegisterClassEx(&wc);
-    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("Dear ImGui DirectX12 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
-
-    // Initialize Direct3D
-    if (CreateDeviceD3D(hwnd) < 0)
-    {
-        CleanupDeviceD3D();
-        UnregisterClass(_T("ImGui Example"), wc.hInstance);
-        return 1;
-    }
-
-    // Show the window
-    ShowWindow(hwnd, SW_SHOWDEFAULT);
-    UpdateWindow(hwnd);
-
-    // Setup Dear ImGui binding
-    IMGUI_CHECKVERSION();
-    ImGui::CreateContext();
-    ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-
-    ImGui_ImplWin32_Init(hwnd);
-    ImGui_ImplDX12_Init(g_pd3dDevice, NUM_FRAMES_IN_FLIGHT, 
-        DXGI_FORMAT_R8G8B8A8_UNORM,
-        g_pd3dSrvDescHeap->GetCPUDescriptorHandleForHeapStart(), 
-        g_pd3dSrvDescHeap->GetGPUDescriptorHandleForHeapStart());
-
-    // Setup style
-    ImGui::StyleColorsDark();
-    //ImGui::StyleColorsClassic();
-
-    // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
-    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
-    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
-    // - Read 'misc/fonts/README.txt' for more instructions and details.
-    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
-    //io.Fonts->AddFontDefault();
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
-    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
-    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
-    //IM_ASSERT(font != NULL);
-
-    bool show_demo_window = true;
-    bool show_another_window = false;
-    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
-
-    // Main loop
-    MSG msg;
-    ZeroMemory(&msg, sizeof(msg));
-    while (msg.message != WM_QUIT)
-    {
-        // Poll and handle messages (inputs, window resize, etc.)
-        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
-        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
-        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
-        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-        if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
-        {
-            TranslateMessage(&msg);
-            DispatchMessage(&msg);
-            continue;
-        }
-
-        // Start the Dear ImGui frame
-        ImGui_ImplDX12_NewFrame();
-        ImGui_ImplWin32_NewFrame();
-        ImGui::NewFrame();
-
-        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
-        if (show_demo_window)
-            ImGui::ShowDemoWindow(&show_demo_window);
-
-        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
-        {
-            static float f = 0.0f;
-            static int counter = 0;
-
-            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
-
-            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
-            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
-            ImGui::Checkbox("Another Window", &show_another_window);
-
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
-            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
-
-            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
-                counter++;
-            ImGui::SameLine();
-            ImGui::Text("counter = %d", counter);
-
-            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
-            ImGui::End();
-        }
-
-        // 3. Show another simple window.
-        if (show_another_window)
-        {
-            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
-            ImGui::Text("Hello from another window!");
-            if (ImGui::Button("Close Me"))
-                show_another_window = false;
-            ImGui::End();
-        }
-
-        // Rendering
-        FrameContext* frameCtxt = WaitForNextFrameResources();
-        UINT backBufferIdx = g_pSwapChain->GetCurrentBackBufferIndex();
-        frameCtxt->CommandAllocator->Reset();
-
-        D3D12_RESOURCE_BARRIER barrier = {};
-        barrier.Type                   = D3D12_RESOURCE_BARRIER_TYPE_TRANSITION;
-        barrier.Flags                  = D3D12_RESOURCE_BARRIER_FLAG_NONE;
-        barrier.Transition.pResource   = g_mainRenderTargetResource[backBufferIdx];
-        barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
-        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_PRESENT;
-        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_RENDER_TARGET;
-
-        g_pd3dCommandList->Reset(frameCtxt->CommandAllocator, NULL);
-        g_pd3dCommandList->ResourceBarrier(1, &barrier);
-        g_pd3dCommandList->ClearRenderTargetView(g_mainRenderTargetDescriptor[backBufferIdx], (float*)&clear_color, 0, NULL);
-        g_pd3dCommandList->OMSetRenderTargets(1, &g_mainRenderTargetDescriptor[backBufferIdx], FALSE, NULL);
-        g_pd3dCommandList->SetDescriptorHeaps(1, &g_pd3dSrvDescHeap);
-        ImGui::Render();
-        ImGui_ImplDX12_RenderDrawData(ImGui::GetDrawData(), g_pd3dCommandList);
-        barrier.Transition.StateBefore = D3D12_RESOURCE_STATE_RENDER_TARGET;
-        barrier.Transition.StateAfter  = D3D12_RESOURCE_STATE_PRESENT;
-        g_pd3dCommandList->ResourceBarrier(1, &barrier);
-        g_pd3dCommandList->Close();
-
-        g_pd3dCommandQueue->ExecuteCommandLists(1, (ID3D12CommandList* const*)&g_pd3dCommandList);
-
-        g_pSwapChain->Present(1, 0); // Present with vsync
-        //g_pSwapChain->Present(0, 0); // Present without vsync
-
-        UINT64 fenceValue = g_fenceLastSignaledValue + 1;
-        g_pd3dCommandQueue->Signal(g_fence, fenceValue);
-        g_fenceLastSignaledValue = fenceValue;
-        frameCtxt->FenceValue = fenceValue;
-    }
-
-    WaitForLastSubmittedFrame();
-    ImGui_ImplDX12_Shutdown();
-    ImGui_ImplWin32_Shutdown();
-    ImGui::DestroyContext();
-
-    CleanupDeviceD3D();
-    DestroyWindow(hwnd);
-    UnregisterClass(_T("ImGui Example"), wc.hInstance);
-
-    return 0;
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
 }

examples/example_win32_directx9/example_win32_directx9.vcxproj

@@ -21,29 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{4165A294-21F2-44CA-9B38-E3F935ABADF5}</ProjectGuid>
     <RootNamespace>example_win32_directx9</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v110</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -85,7 +90,7 @@
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(DXSDK_DIR)Lib\x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>d3d9.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
     </Link>
@@ -98,7 +103,7 @@
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(DXSDK_DIR)Lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>d3d9.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
     </Link>
@@ -116,7 +121,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(DXSDK_DIR)Lib\x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x86;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>d3d9.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
     </Link>
@@ -134,7 +139,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(DXSDK_DIR)Lib\x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>$(DXSDK_DIR)/Lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>d3d9.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <SubSystem>Console</SubSystem>
     </Link>

examples/example_win32_directx9/main.cpp

@@ -1,5 +1,5 @@
-// ImGui - standalone example application for DirectX 9
-// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// dear imgui: standalone example application for DirectX 9
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 
 #include "imgui.h"
 #include "imgui_impl_dx9.h"
@@ -10,86 +10,54 @@
 #include <tchar.h>
 
 // Data
+static LPDIRECT3D9              g_pD3D = NULL;
 static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
-static D3DPRESENT_PARAMETERS    g_d3dpp;
+static D3DPRESENT_PARAMETERS    g_d3dpp = {};
 
-extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
-LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
-{
-    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
-        return true;
-
-    switch (msg)
-    {
-    case WM_SIZE:
-        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
-        {
-            ImGui_ImplDX9_InvalidateDeviceObjects();
-            g_d3dpp.BackBufferWidth  = LOWORD(lParam);
-            g_d3dpp.BackBufferHeight = HIWORD(lParam);
-            HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp);
-            if (hr == D3DERR_INVALIDCALL)
-                IM_ASSERT(0);
-            ImGui_ImplDX9_CreateDeviceObjects();
-        }
-        return 0;
-    case WM_SYSCOMMAND:
-        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
-            return 0;
-        break;
-    case WM_DESTROY:
-        PostQuitMessage(0);
-        return 0;
-    }
-    return DefWindowProc(hWnd, msg, wParam, lParam);
-}
+// Forward declarations of helper functions
+bool CreateDeviceD3D(HWND hWnd);
+void CleanupDeviceD3D();
+void ResetDevice();
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 
+// Main code
 int main(int, char**)
 {
     // Create application window
     WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, NULL, NULL, NULL, _T("ImGui Example"), NULL };
-    RegisterClassEx(&wc);
-    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("Dear ImGui DirectX9 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+    ::RegisterClassEx(&wc);
+    HWND hwnd = ::CreateWindow(wc.lpszClassName, _T("Dear ImGui DirectX9 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
 
     // Initialize Direct3D
-    LPDIRECT3D9 pD3D;
-    if ((pD3D = Direct3DCreate9(D3D_SDK_VERSION)) == NULL)
+    if (!CreateDeviceD3D(hwnd))
     {
-        UnregisterClass(_T("ImGui Example"), wc.hInstance);
-        return 0;
-    }
-    ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
-    g_d3dpp.Windowed = TRUE;
-    g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
-    g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
-    g_d3dpp.EnableAutoDepthStencil = TRUE;
-    g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
-    g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE; // Present with vsync
-    //g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE; // Present without vsync, maximum unthrottled framerate
-
-    // Create the D3DDevice
-    if (pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
-    {
-        pD3D->Release();
-        UnregisterClass(_T("ImGui Example"), wc.hInstance);
-        return 0;
+        CleanupDeviceD3D();
+        ::UnregisterClass(wc.lpszClassName, wc.hInstance);
+        return 1;
     }
 
-    // Setup Dear ImGui binding
+    // Show the window
+    ::ShowWindow(hwnd, SW_SHOWDEFAULT);
+    ::UpdateWindow(hwnd);
+
+    // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    ImGui_ImplWin32_Init(hwnd);
-    ImGui_ImplDX9_Init(g_pd3dDevice);
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsClassic();
 
+    // Setup Platform/Renderer bindings
+    ImGui_ImplWin32_Init(hwnd);
+    ImGui_ImplDX9_Init(g_pd3dDevice);
+
     // Load Fonts
-    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. 
-    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. 
+    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
     // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
     // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
     // - Read 'misc/fonts/README.txt' for more instructions and details.
@@ -102,6 +70,7 @@ int main(int, char**)
     //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
     //IM_ASSERT(font != NULL);
 
+    // Our state
     bool show_demo_window = true;
     bool show_another_window = false;
     ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
@@ -109,8 +78,6 @@ int main(int, char**)
     // Main loop
     MSG msg;
     ZeroMemory(&msg, sizeof(msg));
-    ShowWindow(hwnd, SW_SHOWDEFAULT);
-    UpdateWindow(hwnd);
     while (msg.message != WM_QUIT)
     {
         // Poll and handle messages (inputs, window resize, etc.)
@@ -118,10 +85,10 @@ int main(int, char**)
         // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
         // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
         // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-        if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        if (::PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
         {
-            TranslateMessage(&msg);
-            DispatchMessage(&msg);
+            ::TranslateMessage(&msg);
+            ::DispatchMessage(&msg);
             continue;
         }
 
@@ -145,7 +112,7 @@ int main(int, char**)
             ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
             ImGui::Checkbox("Another Window", &show_another_window);
 
-            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f    
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
             ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
 
             if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
@@ -184,21 +151,81 @@ int main(int, char**)
 
         // Handle loss of D3D9 device
         if (result == D3DERR_DEVICELOST && g_pd3dDevice->TestCooperativeLevel() == D3DERR_DEVICENOTRESET)
-        {
-            ImGui_ImplDX9_InvalidateDeviceObjects();
-            g_pd3dDevice->Reset(&g_d3dpp);
-            ImGui_ImplDX9_CreateDeviceObjects();
-        }
+            ResetDevice();
     }
 
     ImGui_ImplDX9_Shutdown();
     ImGui_ImplWin32_Shutdown();
     ImGui::DestroyContext();
 
-    if (g_pd3dDevice) g_pd3dDevice->Release();
-    if (pD3D) pD3D->Release();
-    DestroyWindow(hwnd);
-    UnregisterClass(_T("ImGui Example"), wc.hInstance);
+    CleanupDeviceD3D();
+    ::DestroyWindow(hwnd);
+    ::UnregisterClass(wc.lpszClassName, wc.hInstance);
 
     return 0;
 }
+
+// Helper functions
+
+bool CreateDeviceD3D(HWND hWnd)
+{
+    if ((g_pD3D = Direct3DCreate9(D3D_SDK_VERSION)) == NULL)
+        return false;
+
+    // Create the D3DDevice
+    ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
+    g_d3dpp.Windowed = TRUE;
+    g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
+    g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
+    g_d3dpp.EnableAutoDepthStencil = TRUE;
+    g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
+    g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_ONE;           // Present with vsync
+    //g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;   // Present without vsync, maximum unthrottled framerate
+    if (g_pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
+        return false;
+
+    return true;
+}
+
+void CleanupDeviceD3D()
+{
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+    if (g_pD3D) { g_pD3D->Release(); g_pD3D = NULL; }
+}
+
+void ResetDevice()
+{
+    ImGui_ImplDX9_InvalidateDeviceObjects();
+    HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp);
+    if (hr == D3DERR_INVALIDCALL)
+        IM_ASSERT(0);
+    ImGui_ImplDX9_CreateDeviceObjects();
+}
+
+// Win32 message handler
+extern LRESULT ImGui_ImplWin32_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplWin32_WndProcHandler(hWnd, msg, wParam, lParam))
+        return true;
+
+    switch (msg)
+    {
+    case WM_SIZE:
+        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
+        {
+            g_d3dpp.BackBufferWidth = LOWORD(lParam);
+            g_d3dpp.BackBufferHeight = HIWORD(lParam);
+            ResetDevice();
+        }
+        return 0;
+    case WM_SYSCOMMAND:
+        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
+            return 0;
+        break;
+    case WM_DESTROY:
+        ::PostQuitMessage(0);
+        return 0;
+    }
+    return ::DefWindowProc(hWnd, msg, wParam, lParam);
+}

examples/imgui_impl_allegro5.cpp

@@ -1,13 +1,13 @@
-// ImGui Renderer + Platform Binding for: Allegro 5
+// dear imgui: Renderer + Platform Binding for Allegro 5
 // (Info: Allegro 5 is a cross-platform general purpose library for handling windows, inputs, graphics, etc.)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
 //  [X] Platform: Clipboard support (from Allegro 5.1.12)
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
-
 // Issues:
-//  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert the format of vertices.
+//  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert vertices manually.
+//  [ ] Platform: Missing gamepad support.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -15,6 +15,10 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-11: Inputs: Don't filter character value from ALLEGRO_EVENT_KEY_CHAR before calling AddInputCharacter().
+//  2019-04-30: Renderer: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2018-11-30: Platform: Added touchscreen support.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName/io.BackendRendererName so they can be displayed in the About Window.
 //  2018-06-13: Platform: Added clipboard support (from Allegro 5.1.12).
 //  2018-06-13: Renderer: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
 //  2018-06-13: Renderer: Backup/restore transform and clipping rectangle.
@@ -58,23 +62,13 @@ struct ImDrawVertAllegro
     ALLEGRO_COLOR col;
 };
 
-// Render function.
-// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
-void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
+static void ImGui_ImplAllegro5_SetupRenderState(ImDrawData* draw_data)
 {
-    // Backup Allegro state that will be modified
-    ALLEGRO_TRANSFORM last_transform = *al_get_current_transform();
-    ALLEGRO_TRANSFORM last_projection_transform = *al_get_current_projection_transform();
-    int last_clip_x, last_clip_y, last_clip_w, last_clip_h;
-    al_get_clipping_rectangle(&last_clip_x, &last_clip_y, &last_clip_w, &last_clip_h);
-    int last_blender_op, last_blender_src, last_blender_dst;
-    al_get_blender(&last_blender_op, &last_blender_src, &last_blender_dst);
-
-    // Setup render state
+    // Setup blending
     al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA);
 
     // Setup orthographic projection matrix
-    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
     {
         float L = draw_data->DisplayPos.x;
         float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
@@ -86,7 +80,28 @@ void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
         al_orthographic_transform(&transform, L, T, 1.0f, R, B, -1.0f);
         al_use_projection_transform(&transform);
     }
+}
 
+// Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // Backup Allegro state that will be modified
+    ALLEGRO_TRANSFORM last_transform = *al_get_current_transform();
+    ALLEGRO_TRANSFORM last_projection_transform = *al_get_current_projection_transform();
+    int last_clip_x, last_clip_y, last_clip_w, last_clip_h;
+    al_get_clipping_rectangle(&last_clip_x, &last_clip_y, &last_clip_w, &last_clip_h);
+    int last_blender_op, last_blender_src, last_blender_dst;
+    al_get_blender(&last_blender_op, &last_blender_src, &last_blender_dst);
+
+    // Setup desired render state
+    ImGui_ImplAllegro5_SetupRenderState(draw_data);
+
+    // Render command lists
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
@@ -108,7 +123,7 @@ void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
         const int* indices = NULL;
         if (sizeof(ImDrawIdx) == 2)
         {
-            // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request ImGui to output 32-bit indices.
+            // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices.. You can '#define ImDrawIdx int' in imconfig.h to request Dear ImGui to output 32-bit indices.
             // Otherwise, we convert them from 16-bit to 32-bit at runtime here, which works perfectly but is a little wasteful.
             static ImVector<int> indices_converted;
             indices_converted.resize(cmd_list->IdxBuffer.Size);
@@ -121,19 +136,26 @@ void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
             indices = (const int*)cmd_list->IdxBuffer.Data;
         }
 
+        // Render command lists
         int idx_offset = 0;
-        ImVec2 pos = draw_data->DisplayPos;
+        ImVec2 clip_off = draw_data->DisplayPos;
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
             if (pcmd->UserCallback)
             {
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplAllegro5_SetupRenderState(draw_data);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
+                // Draw
                 ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId;
-                al_set_clipping_rectangle(pcmd->ClipRect.x - pos.x, pcmd->ClipRect.y - pos.y, pcmd->ClipRect.z - pcmd->ClipRect.x, pcmd->ClipRect.w - pcmd->ClipRect.y);
+                al_set_clipping_rectangle(pcmd->ClipRect.x - clip_off.x, pcmd->ClipRect.y - clip_off.y, pcmd->ClipRect.z - pcmd->ClipRect.x, pcmd->ClipRect.w - pcmd->ClipRect.y);
                 al_draw_prim(&vertices[0], g_VertexDecl, texture, idx_offset, idx_offset + pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST);
             }
             idx_offset += pcmd->ElemCount;
@@ -151,7 +173,7 @@ bool ImGui_ImplAllegro5_CreateDeviceObjects()
 {
     // Build texture atlas
     ImGuiIO &io = ImGui::GetIO();
-    unsigned char *pixels;
+    unsigned char* pixels;
     int width, height;
     io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
 
@@ -231,6 +253,7 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
     // Setup back-end capabilities flags
     ImGuiIO& io = ImGui::GetIO();
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;       // We can honor GetMouseCursor() values (optional)
+    io.BackendPlatformName = io.BackendRendererName = "imgui_impl_allegro5";
 
     // Create custom vertex declaration.
     // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats.
@@ -265,6 +288,7 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
     io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X;
     io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y;
     io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z;
+    io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
 
 #if ALLEGRO_HAS_CLIPBOARD
     io.SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
@@ -278,9 +302,14 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
 void ImGui_ImplAllegro5_Shutdown()
 {
     ImGui_ImplAllegro5_InvalidateDeviceObjects();
-    g_Display = NULL;
 
-    // Destroy last known clipboard data
+    g_Display = NULL;
+    g_Time = 0.0;
+
+    if (g_VertexDecl)
+        al_destroy_vertex_decl(g_VertexDecl);
+    g_VertexDecl = NULL;
+
     if (g_ClipboardTextData)
         al_free(g_ClipboardTextData);
     g_ClipboardTextData = NULL;
@@ -297,13 +326,35 @@ bool ImGui_ImplAllegro5_ProcessEvent(ALLEGRO_EVENT *ev)
     switch (ev->type)
     {
     case ALLEGRO_EVENT_MOUSE_AXES:
-        io.MouseWheel += ev->mouse.dz;
-        io.MouseWheelH += ev->mouse.dw;
+        if (ev->mouse.display == g_Display)
+        {
+            io.MouseWheel += ev->mouse.dz;
+            io.MouseWheelH += ev->mouse.dw;
+            io.MousePos = ImVec2(ev->mouse.x, ev->mouse.y);
+        }
+        return true;
+    case ALLEGRO_EVENT_MOUSE_BUTTON_DOWN:
+    case ALLEGRO_EVENT_MOUSE_BUTTON_UP:
+        if (ev->mouse.display == g_Display && ev->mouse.button <= 5)
+            io.MouseDown[ev->mouse.button - 1] = (ev->type == ALLEGRO_EVENT_MOUSE_BUTTON_DOWN);
+        return true;
+    case ALLEGRO_EVENT_TOUCH_MOVE:
+        if (ev->touch.display == g_Display)
+            io.MousePos = ImVec2(ev->touch.x, ev->touch.y);
+        return true;
+    case ALLEGRO_EVENT_TOUCH_BEGIN:
+    case ALLEGRO_EVENT_TOUCH_END:
+    case ALLEGRO_EVENT_TOUCH_CANCEL:
+        if (ev->touch.display == g_Display && ev->touch.primary)
+            io.MouseDown[0] = (ev->type == ALLEGRO_EVENT_TOUCH_BEGIN);
+        return true;
+    case ALLEGRO_EVENT_MOUSE_LEAVE_DISPLAY:
+        if (ev->mouse.display == g_Display)
+            io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
         return true;
     case ALLEGRO_EVENT_KEY_CHAR:
         if (ev->keyboard.display == g_Display)
-            if (ev->keyboard.unichar > 0 && ev->keyboard.unichar < 0x10000)
-                io.AddInputCharacter((unsigned short)ev->keyboard.unichar);
+            io.AddInputCharacter((unsigned int)ev->keyboard.unichar);
         return true;
     case ALLEGRO_EVENT_KEY_DOWN:
     case ALLEGRO_EVENT_KEY_UP:
@@ -368,21 +419,5 @@ void ImGui_ImplAllegro5_NewFrame()
     io.KeyAlt = al_key_down(&keys, ALLEGRO_KEY_ALT) || al_key_down(&keys, ALLEGRO_KEY_ALTGR);
     io.KeySuper = al_key_down(&keys, ALLEGRO_KEY_LWIN) || al_key_down(&keys, ALLEGRO_KEY_RWIN);
 
-    ALLEGRO_MOUSE_STATE mouse;
-    if (keys.display == g_Display)
-    {
-        al_get_mouse_state(&mouse);
-        io.MousePos = ImVec2((float)mouse.x, (float)mouse.y);
-    }
-    else
-    {
-        io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
-    }
-
-    al_get_mouse_state(&mouse);
-    io.MouseDown[0] = mouse.buttons & (1 << 0);
-    io.MouseDown[1] = mouse.buttons & (1 << 1);
-    io.MouseDown[2] = mouse.buttons & (1 << 2);
-
     ImGui_ImplAllegro5_UpdateMouseCursor();
 }

examples/imgui_impl_allegro5.h

@@ -1,12 +1,13 @@
-// ImGui Renderer + Platform Binding for: Allegro 5
+// dear imgui: Renderer + Platform Binding for Allegro 5
 // (Info: Allegro 5 is a cross-platform general purpose library for handling windows, inputs, graphics, etc.)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'ALLEGRO_BITMAP*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Platform: Clipboard support (from Allegro 5.1.12)
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 // Issues:
-//  [ ] Renderer: The renderer is suboptimal as we need to convert vertices.
-//  [ ] Platform: Missing clipboard support via al_set_clipboard_text/al_clipboard_has_text.
+//  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert vertices manually.
+//  [ ] Platform: Missing gamepad support.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_dx10.cpp

@@ -1,15 +1,20 @@
-// ImGui Renderer for: DirectX10
+// dear imgui: Renderer for DirectX10
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
-// CHANGELOG 
+// CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX10: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX10: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-07-13: DirectX10: Fixed unreleased resources in Init and Shutdown functions.
 //  2018-06-08: Misc: Extracted imgui_impl_dx10.cpp/.h away from the old combined DX10+Win32 example.
 //  2018-06-08: DirectX10: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
@@ -26,6 +31,9 @@
 #include <d3d10_1.h>
 #include <d3d10.h>
 #include <d3dcompiler.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
+#endif
 
 // DirectX data
 static ID3D10Device*            g_pd3dDevice = NULL;
@@ -50,10 +58,45 @@ struct VERTEX_CONSTANT_BUFFER
     float   mvp[4][4];
 };
 
+static void ImGui_ImplDX10_SetupRenderState(ImDrawData* draw_data, ID3D10Device* ctx)
+{
+    // Setup viewport
+    D3D10_VIEWPORT vp;
+    memset(&vp, 0, sizeof(D3D10_VIEWPORT));
+    vp.Width = (UINT)draw_data->DisplaySize.x;
+    vp.Height = (UINT)draw_data->DisplaySize.y;
+    vp.MinDepth = 0.0f;
+    vp.MaxDepth = 1.0f;
+    vp.TopLeftX = vp.TopLeftY = 0;
+    ctx->RSSetViewports(1, &vp);
+
+    // Bind shader and vertex buffers
+    unsigned int stride = sizeof(ImDrawVert);
+    unsigned int offset = 0;
+    ctx->IASetInputLayout(g_pInputLayout);
+    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
+    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
+    ctx->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    ctx->VSSetShader(g_pVertexShader);
+    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
+    ctx->PSSetShader(g_pPixelShader);
+    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
+
+    // Setup render state
+    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
+    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
+    ctx->RSSetState(g_pRasterizerState);
+}
+
 // Render function
 // (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
 void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
 {
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
     ID3D10Device* ctx = g_pd3dDevice;
 
     // Create and grow vertex/index buffers if needed
@@ -103,7 +146,7 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
     g_pIB->Unmap();
 
     // Setup orthographic projection matrix into our constant buffer
-    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
     {
         void* mapped_resource;
         if (g_pVertexConstantBuffer->Map(D3D10_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
@@ -163,38 +206,14 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
     ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
     ctx->IAGetInputLayout(&old.InputLayout);
 
-    // Setup viewport
-    D3D10_VIEWPORT vp;
-    memset(&vp, 0, sizeof(D3D10_VIEWPORT));
-    vp.Width = (UINT)draw_data->DisplaySize.x;
-    vp.Height = (UINT)draw_data->DisplaySize.y;
-    vp.MinDepth = 0.0f;
-    vp.MaxDepth = 1.0f;
-    vp.TopLeftX = vp.TopLeftY = 0;
-    ctx->RSSetViewports(1, &vp);
-
-    // Bind shader and vertex buffers
-    unsigned int stride = sizeof(ImDrawVert);
-    unsigned int offset = 0;
-    ctx->IASetInputLayout(g_pInputLayout);
-    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
-    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
-    ctx->IASetPrimitiveTopology(D3D10_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
-    ctx->VSSetShader(g_pVertexShader);
-    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
-    ctx->PSSetShader(g_pPixelShader);
-    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
-
-    // Setup render state
-    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
-    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
-    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
-    ctx->RSSetState(g_pRasterizerState);
+    // Setup desired DX state
+    ImGui_ImplDX10_SetupRenderState(draw_data, ctx);
 
     // Render command lists
-    int vtx_offset = 0;
-    int idx_offset = 0;
-    ImVec2 pos = draw_data->DisplayPos;
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
@@ -203,23 +222,27 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
             if (pcmd->UserCallback)
             {
-                // User callback (registered via ImDrawList::AddCallback)
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX10_SetupRenderState(draw_data, ctx);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
                 // Apply scissor/clipping rectangle
-                const D3D10_RECT r = { (LONG)(pcmd->ClipRect.x - pos.x), (LONG)(pcmd->ClipRect.y - pos.y), (LONG)(pcmd->ClipRect.z - pos.x), (LONG)(pcmd->ClipRect.w - pos.y)};
+                const D3D10_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y)};
                 ctx->RSSetScissorRects(1, &r);
 
                 // Bind texture, Draw
                 ID3D10ShaderResourceView* texture_srv = (ID3D10ShaderResourceView*)pcmd->TextureId;
                 ctx->PSSetShaderResources(0, 1, &texture_srv);
-                ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
+                ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
             }
-            idx_offset += pcmd->ElemCount;
         }
-        vtx_offset += cmd_list->VtxBuffer.Size;
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
     }
 
     // Restore modified DX state
@@ -306,9 +329,9 @@ bool    ImGui_ImplDX10_CreateDeviceObjects()
         ImGui_ImplDX10_InvalidateDeviceObjects();
 
     // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
-    // If you would like to use this DX10 sample code but remove this dependency you can: 
+    // If you would like to use this DX10 sample code but remove this dependency you can:
     //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
-    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL. 
+    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
     // See https://github.com/ocornut/imgui/pull/638 for sources and details.
 
     // Create the vertex shader
@@ -348,7 +371,7 @@ bool    ImGui_ImplDX10_CreateDeviceObjects()
             return false;
 
         // Create the input layout
-        D3D10_INPUT_ELEMENT_DESC local_layout[] = 
+        D3D10_INPUT_ELEMENT_DESC local_layout[] =
         {
             { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->pos), D3D10_INPUT_PER_VERTEX_DATA, 0 },
             { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->uv),  D3D10_INPUT_PER_VERTEX_DATA, 0 },
@@ -463,6 +486,11 @@ void    ImGui_ImplDX10_InvalidateDeviceObjects()
 
 bool    ImGui_ImplDX10_Init(ID3D10Device* device)
 {
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx10";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
     // Get factory from device
     IDXGIDevice* pDXGIDevice = NULL;
     IDXGIAdapter* pDXGIAdapter = NULL;
@@ -477,6 +505,7 @@ bool    ImGui_ImplDX10_Init(ID3D10Device* device)
             }
     if (pDXGIDevice) pDXGIDevice->Release();
     if (pDXGIAdapter) pDXGIAdapter->Release();
+    g_pd3dDevice->AddRef();
 
     return true;
 }
@@ -485,7 +514,7 @@ void ImGui_ImplDX10_Shutdown()
 {
     ImGui_ImplDX10_InvalidateDeviceObjects();
     if (g_pFactory) { g_pFactory->Release(); g_pFactory = NULL; }
-    g_pd3dDevice = NULL;
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
 }
 
 void ImGui_ImplDX10_NewFrame()

examples/imgui_impl_dx10.h

@@ -1,13 +1,16 @@
-// ImGui Renderer for: DirectX10
+// dear imgui: Renderer for DirectX10
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
+#pragma once
+
 struct ID3D10Device;
 
 IMGUI_IMPL_API bool     ImGui_ImplDX10_Init(ID3D10Device* device);

examples/imgui_impl_dx11.cpp

@@ -1,8 +1,9 @@
-// ImGui Renderer for: DirectX11
+// dear imgui: Renderer for DirectX11
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp
@@ -10,6 +11,10 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX11: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX11: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-08-01: DirectX11: Querying for IDXGIFactory instead of IDXGIFactory1 to increase compatibility.
 //  2018-07-13: DirectX11: Fixed unreleased resources in Init and Shutdown functions.
 //  2018-06-08: Misc: Extracted imgui_impl_dx11.cpp/.h away from the old combined DX11+Win32 example.
@@ -25,6 +30,9 @@
 #include <stdio.h>
 #include <d3d11.h>
 #include <d3dcompiler.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
+#endif
 
 // DirectX data
 static ID3D11Device*            g_pd3dDevice = NULL;
@@ -50,10 +58,45 @@ struct VERTEX_CONSTANT_BUFFER
     float   mvp[4][4];
 };
 
+static void ImGui_ImplDX11_SetupRenderState(ImDrawData* draw_data, ID3D11DeviceContext* ctx)
+{
+    // Setup viewport
+    D3D11_VIEWPORT vp;
+    memset(&vp, 0, sizeof(D3D11_VIEWPORT));
+    vp.Width = draw_data->DisplaySize.x;
+    vp.Height = draw_data->DisplaySize.y;
+    vp.MinDepth = 0.0f;
+    vp.MaxDepth = 1.0f;
+    vp.TopLeftX = vp.TopLeftY = 0;
+    ctx->RSSetViewports(1, &vp);
+
+    // Setup shader and vertex buffers
+    unsigned int stride = sizeof(ImDrawVert);
+    unsigned int offset = 0;
+    ctx->IASetInputLayout(g_pInputLayout);
+    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
+    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
+    ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
+    ctx->VSSetShader(g_pVertexShader, NULL, 0);
+    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
+    ctx->PSSetShader(g_pPixelShader, NULL, 0);
+    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
+
+    // Setup blend state
+    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
+    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
+    ctx->RSSetState(g_pRasterizerState);
+}
+
 // Render function
 // (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
 void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
 {
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
     ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
 
     // Create and grow vertex/index buffers if needed
@@ -85,7 +128,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
             return;
     }
 
-    // Copy and convert all vertices into a single contiguous buffer
+    // Upload vertex/index data into a single contiguous GPU buffer
     D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
     if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
         return;
@@ -105,7 +148,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
     ctx->Unmap(g_pIB, 0);
 
     // Setup orthographic projection matrix into our constant buffer
-    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). 
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
     {
         D3D11_MAPPED_SUBRESOURCE mapped_resource;
         if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
@@ -168,63 +211,43 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
     ctx->IAGetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset);
     ctx->IAGetInputLayout(&old.InputLayout);
 
-    // Setup viewport
-    D3D11_VIEWPORT vp;
-    memset(&vp, 0, sizeof(D3D11_VIEWPORT));
-    vp.Width =  draw_data->DisplaySize.x;
-    vp.Height = draw_data->DisplaySize.y;
-    vp.MinDepth = 0.0f;
-    vp.MaxDepth = 1.0f;
-    vp.TopLeftX = vp.TopLeftY = 0;
-    ctx->RSSetViewports(1, &vp);
-
-    // Bind shader and vertex buffers
-    unsigned int stride = sizeof(ImDrawVert);
-    unsigned int offset = 0;
-    ctx->IASetInputLayout(g_pInputLayout);
-    ctx->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
-    ctx->IASetIndexBuffer(g_pIB, sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT, 0);
-    ctx->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
-    ctx->VSSetShader(g_pVertexShader, NULL, 0);
-    ctx->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
-    ctx->PSSetShader(g_pPixelShader, NULL, 0);
-    ctx->PSSetSamplers(0, 1, &g_pFontSampler);
-
-    // Setup render state
-    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
-    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
-    ctx->OMSetDepthStencilState(g_pDepthStencilState, 0);
-    ctx->RSSetState(g_pRasterizerState);
+    // Setup desired DX state
+    ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
 
     // Render command lists
-    int vtx_offset = 0;
-    int idx_offset = 0;
-    ImVec2 pos = draw_data->DisplayPos;
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_idx_offset = 0;
+    int global_vtx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
-            if (pcmd->UserCallback)
+            if (pcmd->UserCallback != NULL)
             {
-                // User callback (registered via ImDrawList::AddCallback)
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX11_SetupRenderState(draw_data, ctx);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
                 // Apply scissor/clipping rectangle
-                const D3D11_RECT r = { (LONG)(pcmd->ClipRect.x - pos.x), (LONG)(pcmd->ClipRect.y - pos.y), (LONG)(pcmd->ClipRect.z - pos.x), (LONG)(pcmd->ClipRect.w - pos.y) };
+                const D3D11_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
                 ctx->RSSetScissorRects(1, &r);
 
                 // Bind texture, Draw
                 ID3D11ShaderResourceView* texture_srv = (ID3D11ShaderResourceView*)pcmd->TextureId;
                 ctx->PSSetShaderResources(0, 1, &texture_srv);
-                ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
+                ctx->DrawIndexed(pcmd->ElemCount, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset);
             }
-            idx_offset += pcmd->ElemCount;
         }
-        vtx_offset += cmd_list->VtxBuffer.Size;
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
     }
 
     // Restore modified DX state
@@ -313,9 +336,9 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
         ImGui_ImplDX11_InvalidateDeviceObjects();
 
     // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
-    // If you would like to use this DX11 sample code but remove this dependency you can: 
+    // If you would like to use this DX11 sample code but remove this dependency you can:
     //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
-    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL. 
+    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
     // See https://github.com/ocornut/imgui/pull/638 for sources and details.
 
     // Create the vertex shader
@@ -355,7 +378,7 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
             return false;
 
         // Create the input layout
-        D3D11_INPUT_ELEMENT_DESC local_layout[] = 
+        D3D11_INPUT_ELEMENT_DESC local_layout[] =
         {
             { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
             { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->uv),  D3D11_INPUT_PER_VERTEX_DATA, 0 },
@@ -470,6 +493,11 @@ void    ImGui_ImplDX11_InvalidateDeviceObjects()
 
 bool    ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_context)
 {
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx11";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
     // Get factory from device
     IDXGIDevice* pDXGIDevice = NULL;
     IDXGIAdapter* pDXGIAdapter = NULL;
@@ -485,6 +513,8 @@ bool    ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_co
             }
     if (pDXGIDevice) pDXGIDevice->Release();
     if (pDXGIAdapter) pDXGIAdapter->Release();
+    g_pd3dDevice->AddRef();
+    g_pd3dDeviceContext->AddRef();
 
     return true;
 }
@@ -493,8 +523,8 @@ void ImGui_ImplDX11_Shutdown()
 {
     ImGui_ImplDX11_InvalidateDeviceObjects();
     if (g_pFactory) { g_pFactory->Release(); g_pFactory = NULL; }
-    g_pd3dDevice = NULL;
-    g_pd3dDeviceContext = NULL;
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
+    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
 }
 
 void ImGui_ImplDX11_NewFrame()

examples/imgui_impl_dx11.h

@@ -1,13 +1,16 @@
-// ImGui Renderer for: DirectX11
+// dear imgui: Renderer for DirectX11
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
+#pragma once
+
 struct ID3D11Device;
 struct ID3D11DeviceContext;
 

examples/imgui_impl_dx12.cpp

@@ -1,8 +1,9 @@
-// ImGui Renderer for: DirectX12
+// dear imgui: Renderer for DirectX12
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 // Issues:
 //  [ ] 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*)). See github.com/ocornut/imgui/pull/301
 
@@ -12,6 +13,11 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX12: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX12: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: Misc: Various minor tidying up.
+//  2018-12-03: Misc: Added #pragma comment statement to automatically link with d3dcompiler.lib when using D3DCompile().
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-06-12: DirectX12: Moved the ID3D12GraphicsCommandList* parameter from NewFrame() to RenderDrawData().
 //  2018-06-08: Misc: Extracted imgui_impl_dx12.cpp/.h away from the old combined DX12+Win32 example.
 //  2018-06-08: DirectX12: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle (to ease support for future multi-viewport).
@@ -24,6 +30,9 @@
 #include <d3d12.h>
 #include <dxgi1_4.h>
 #include <d3dcompiler.h>
+#ifdef _MSC_VER
+#pragma comment(lib, "d3dcompiler") // Automatically link with d3dcompiler.lib as we are using D3DCompile() below.
+#endif
 
 // DirectX data
 static ID3D12Device*                g_pd3dDevice = NULL;
@@ -38,111 +47,26 @@ static D3D12_GPU_DESCRIPTOR_HANDLE  g_hFontSrvGpuDescHandle = {};
 
 struct FrameResources
 {
-    ID3D12Resource* IB;
-    ID3D12Resource* VB;
-    int VertexBufferSize;
-    int IndexBufferSize;
+    ID3D12Resource*     IndexBuffer;
+    ID3D12Resource*     VertexBuffer;
+    int                 IndexBufferSize;
+    int                 VertexBufferSize;
 };
-static FrameResources*              g_pFrameResources = NULL;
-static UINT                         g_numFramesInFlight = 0;
-static UINT                         g_frameIndex = UINT_MAX;
+static FrameResources*  g_pFrameResources = NULL;
+static UINT             g_numFramesInFlight = 0;
+static UINT             g_frameIndex = UINT_MAX;
 
 struct VERTEX_CONSTANT_BUFFER
 {
     float   mvp[4][4];
 };
 
-// Render function
-// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
-void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx)
+static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx, FrameResources* fr)
 {
-    // FIXME: I'm assuming that this only gets called once per frame!
-    // If not, we can't just re-allocate the IB or VB, we'll have to do a proper allocator.
-    g_frameIndex = g_frameIndex + 1;
-    FrameResources* frameResources = &g_pFrameResources[g_frameIndex % g_numFramesInFlight];
-    ID3D12Resource* g_pVB = frameResources->VB;
-    ID3D12Resource* g_pIB = frameResources->IB;
-    int g_VertexBufferSize = frameResources->VertexBufferSize;
-    int g_IndexBufferSize = frameResources->IndexBufferSize;
-
-    // Create and grow vertex/index buffers if needed
-    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
-    {
-        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
-        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
-        D3D12_HEAP_PROPERTIES props;
-        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
-        props.Type = D3D12_HEAP_TYPE_UPLOAD;
-        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
-        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
-        D3D12_RESOURCE_DESC desc;
-        memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
-        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
-        desc.Width = g_VertexBufferSize * sizeof(ImDrawVert);
-        desc.Height = 1;
-        desc.DepthOrArraySize = 1;
-        desc.MipLevels = 1;
-        desc.Format = DXGI_FORMAT_UNKNOWN;
-        desc.SampleDesc.Count = 1;
-        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
-        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
-        if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&g_pVB)) < 0)
-            return;
-        frameResources->VB = g_pVB;
-        frameResources->VertexBufferSize = g_VertexBufferSize;
-    }
-    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
-    {
-        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
-        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
-        D3D12_HEAP_PROPERTIES props;
-        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
-        props.Type = D3D12_HEAP_TYPE_UPLOAD;
-        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
-        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
-        D3D12_RESOURCE_DESC desc;
-        memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
-        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
-        desc.Width = g_IndexBufferSize * sizeof(ImDrawIdx);
-        desc.Height = 1;
-        desc.DepthOrArraySize = 1;
-        desc.MipLevels = 1;
-        desc.Format = DXGI_FORMAT_UNKNOWN;
-        desc.SampleDesc.Count = 1;
-        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
-        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
-        if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&g_pIB)) < 0)
-            return;
-        frameResources->IB = g_pIB;
-        frameResources->IndexBufferSize = g_IndexBufferSize;
-    }
-
-    // Copy and convert all vertices into a single contiguous buffer
-    void* vtx_resource, *idx_resource;
-    D3D12_RANGE range;
-    memset(&range, 0, sizeof(D3D12_RANGE));
-    if (g_pVB->Map(0, &range, &vtx_resource) != S_OK)
-        return;
-    if (g_pIB->Map(0, &range, &idx_resource) != S_OK)
-        return;
-    ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource;
-    ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource;
-    for (int n = 0; n < draw_data->CmdListsCount; n++)
-    {
-        const ImDrawList* cmd_list = draw_data->CmdLists[n];
-        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
-        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
-        vtx_dst += cmd_list->VtxBuffer.Size;
-        idx_dst += cmd_list->IdxBuffer.Size;
-    }
-    g_pVB->Unmap(0, &range);
-    g_pIB->Unmap(0, &range);
-
     // Setup orthographic projection matrix into our constant buffer
-    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). 
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
     VERTEX_CONSTANT_BUFFER vertex_constant_buffer;
     {
-        VERTEX_CONSTANT_BUFFER* constant_buffer = &vertex_constant_buffer;
         float L = draw_data->DisplayPos.x;
         float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
         float T = draw_data->DisplayPos.y;
@@ -154,7 +78,7 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
             { 0.0f,         0.0f,           0.5f,       0.0f },
             { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
         };
-        memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
+        memcpy(&vertex_constant_buffer.mvp, mvp, sizeof(mvp));
     }
 
     // Setup viewport
@@ -172,14 +96,14 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
     unsigned int offset = 0;
     D3D12_VERTEX_BUFFER_VIEW vbv;
     memset(&vbv, 0, sizeof(D3D12_VERTEX_BUFFER_VIEW));
-    vbv.BufferLocation = g_pVB->GetGPUVirtualAddress() + offset;
-    vbv.SizeInBytes = g_VertexBufferSize * stride;
+    vbv.BufferLocation = fr->VertexBuffer->GetGPUVirtualAddress() + offset;
+    vbv.SizeInBytes = fr->VertexBufferSize * stride;
     vbv.StrideInBytes = stride;
     ctx->IASetVertexBuffers(0, 1, &vbv);
     D3D12_INDEX_BUFFER_VIEW ibv;
     memset(&ibv, 0, sizeof(D3D12_INDEX_BUFFER_VIEW));
-    ibv.BufferLocation = g_pIB->GetGPUVirtualAddress();
-    ibv.SizeInBytes = g_IndexBufferSize * sizeof(ImDrawIdx);
+    ibv.BufferLocation = fr->IndexBuffer->GetGPUVirtualAddress();
+    ibv.SizeInBytes = fr->IndexBufferSize * sizeof(ImDrawIdx);
     ibv.Format = sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
     ctx->IASetIndexBuffer(&ibv);
     ctx->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
@@ -187,34 +111,127 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
     ctx->SetGraphicsRootSignature(g_pRootSignature);
     ctx->SetGraphicsRoot32BitConstants(0, 16, &vertex_constant_buffer, 0);
 
-    // Setup render state
+    // Setup blend factor
     const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
     ctx->OMSetBlendFactor(blend_factor);
+}
+
+// Render function
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* ctx)
+{
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
+
+    // FIXME: I'm assuming that this only gets called once per frame!
+    // If not, we can't just re-allocate the IB or VB, we'll have to do a proper allocator.
+    g_frameIndex = g_frameIndex + 1;
+    FrameResources* fr = &g_pFrameResources[g_frameIndex % g_numFramesInFlight];
+
+    // Create and grow vertex/index buffers if needed
+    if (fr->VertexBuffer == NULL || fr->VertexBufferSize < draw_data->TotalVtxCount)
+    {
+        if (fr->VertexBuffer != NULL) { fr->VertexBuffer->Release(); fr->VertexBuffer = NULL; }
+        fr->VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        D3D12_HEAP_PROPERTIES props;
+        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
+        props.Type = D3D12_HEAP_TYPE_UPLOAD;
+        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+        D3D12_RESOURCE_DESC desc;
+        memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
+        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+        desc.Width = fr->VertexBufferSize * sizeof(ImDrawVert);
+        desc.Height = 1;
+        desc.DepthOrArraySize = 1;
+        desc.MipLevels = 1;
+        desc.Format = DXGI_FORMAT_UNKNOWN;
+        desc.SampleDesc.Count = 1;
+        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
+        if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&fr->VertexBuffer)) < 0)
+            return;
+    }
+    if (fr->IndexBuffer == NULL || fr->IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (fr->IndexBuffer != NULL) { fr->IndexBuffer->Release(); fr->IndexBuffer = NULL; }
+        fr->IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        D3D12_HEAP_PROPERTIES props;
+        memset(&props, 0, sizeof(D3D12_HEAP_PROPERTIES));
+        props.Type = D3D12_HEAP_TYPE_UPLOAD;
+        props.CPUPageProperty = D3D12_CPU_PAGE_PROPERTY_UNKNOWN;
+        props.MemoryPoolPreference = D3D12_MEMORY_POOL_UNKNOWN;
+        D3D12_RESOURCE_DESC desc;
+        memset(&desc, 0, sizeof(D3D12_RESOURCE_DESC));
+        desc.Dimension = D3D12_RESOURCE_DIMENSION_BUFFER;
+        desc.Width = fr->IndexBufferSize * sizeof(ImDrawIdx);
+        desc.Height = 1;
+        desc.DepthOrArraySize = 1;
+        desc.MipLevels = 1;
+        desc.Format = DXGI_FORMAT_UNKNOWN;
+        desc.SampleDesc.Count = 1;
+        desc.Layout = D3D12_TEXTURE_LAYOUT_ROW_MAJOR;
+        desc.Flags = D3D12_RESOURCE_FLAG_NONE;
+        if (g_pd3dDevice->CreateCommittedResource(&props, D3D12_HEAP_FLAG_NONE, &desc, D3D12_RESOURCE_STATE_GENERIC_READ, NULL, IID_PPV_ARGS(&fr->IndexBuffer)) < 0)
+            return;
+    }
+
+    // Upload vertex/index data into a single contiguous GPU buffer
+    void* vtx_resource, *idx_resource;
+    D3D12_RANGE range;
+    memset(&range, 0, sizeof(D3D12_RANGE));
+    if (fr->VertexBuffer->Map(0, &range, &vtx_resource) != S_OK)
+        return;
+    if (fr->IndexBuffer->Map(0, &range, &idx_resource) != S_OK)
+        return;
+    ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource;
+    ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
+        memcpy(idx_dst, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.Size;
+        idx_dst += cmd_list->IdxBuffer.Size;
+    }
+    fr->VertexBuffer->Unmap(0, &range);
+    fr->IndexBuffer->Unmap(0, &range);
+
+    // Setup desired DX state
+    ImGui_ImplDX12_SetupRenderState(draw_data, ctx, fr);
 
     // Render command lists
-    int vtx_offset = 0;
-    int idx_offset = 0;
-    ImVec2 pos = draw_data->DisplayPos;
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
-            if (pcmd->UserCallback)
+            if (pcmd->UserCallback != NULL)
             {
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX12_SetupRenderState(draw_data, ctx, fr);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                const D3D12_RECT r = { (LONG)(pcmd->ClipRect.x - pos.x), (LONG)(pcmd->ClipRect.y - pos.y), (LONG)(pcmd->ClipRect.z - pos.x), (LONG)(pcmd->ClipRect.w - pos.y) };
+                // Apply Scissor, Bind texture, Draw
+                const D3D12_RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
                 ctx->SetGraphicsRootDescriptorTable(1, *(D3D12_GPU_DESCRIPTOR_HANDLE*)&pcmd->TextureId);
                 ctx->RSSetScissorRects(1, &r);
-                ctx->DrawIndexedInstanced(pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
+                ctx->DrawIndexedInstanced(pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0);
             }
-            idx_offset += pcmd->ElemCount;
         }
-        vtx_offset += cmd_list->VtxBuffer.Size;
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
     }
 }
 
@@ -432,9 +449,9 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
     }
 
     // By using D3DCompile() from <d3dcompiler.h> / d3dcompiler.lib, we introduce a dependency to a given version of d3dcompiler_XX.dll (see D3DCOMPILER_DLL_A)
-    // If you would like to use this DX12 sample code but remove this dependency you can: 
+    // If you would like to use this DX12 sample code but remove this dependency you can:
     //  1) compile once, save the compiled shader blobs into a file or source code and pass them to CreateVertexShader()/CreatePixelShader() [preferred solution]
-    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL. 
+    //  2) use code to detect any version of the DLL and grab a pointer to D3DCompile from the DLL.
     // See https://github.com/ocornut/imgui/pull/638 for sources and details.
 
     D3D12_GRAPHICS_PIPELINE_STATE_DESC psoDesc;
@@ -485,9 +502,9 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
 
         // Create the input layout
         static D3D12_INPUT_ELEMENT_DESC local_layout[] = {
-            { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->pos), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
-            { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, (size_t)(&((ImDrawVert*)0)->uv),  D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
-            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+            { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT,   0, IM_OFFSETOF(ImDrawVert, pos), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+            { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT,   0, IM_OFFSETOF(ImDrawVert, uv),  D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
+            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, IM_OFFSETOF(ImDrawVert, col), D3D12_INPUT_CLASSIFICATION_PER_VERTEX_DATA, 0 },
         };
         psoDesc.InputLayout = { local_layout, 3 };
     }
@@ -571,21 +588,28 @@ void    ImGui_ImplDX12_InvalidateDeviceObjects()
     if (!g_pd3dDevice)
         return;
 
+    ImGuiIO& io = ImGui::GetIO();
     if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
     if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
     if (g_pRootSignature) { g_pRootSignature->Release(); g_pRootSignature = NULL; }
     if (g_pPipelineState) { g_pPipelineState->Release(); g_pPipelineState = NULL; }
-    if (g_pFontTextureResource) { g_pFontTextureResource->Release(); g_pFontTextureResource = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
+    if (g_pFontTextureResource) { g_pFontTextureResource->Release(); g_pFontTextureResource = NULL; io.Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
     for (UINT i = 0; i < g_numFramesInFlight; i++)
     {
-        if (g_pFrameResources[i].IB) { g_pFrameResources[i].IB->Release(); g_pFrameResources[i].IB = NULL; }
-        if (g_pFrameResources[i].VB) { g_pFrameResources[i].VB->Release(); g_pFrameResources[i].VB = NULL; }
+        FrameResources* fr = &g_pFrameResources[i];
+        if (fr->IndexBuffer)  { fr->IndexBuffer->Release();  fr->IndexBuffer = NULL; }
+        if (fr->VertexBuffer) { fr->VertexBuffer->Release(); fr->VertexBuffer = NULL; }
     }
 }
 
 bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format,
                          D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
 {
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx12";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
     g_pd3dDevice = device;
     g_RTVFormat = rtv_format;
     g_hFontSrvCpuDescHandle = font_srv_cpu_desc_handle;
@@ -597,10 +621,11 @@ bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FO
     // Create buffers with a default size (they will later be grown as needed)
     for (int i = 0; i < num_frames_in_flight; i++)
     {
-        g_pFrameResources[i].IB = NULL;
-        g_pFrameResources[i].VB = NULL;
-        g_pFrameResources[i].VertexBufferSize = 5000;
-        g_pFrameResources[i].IndexBufferSize = 10000;
+        FrameResources* fr = &g_pFrameResources[i];
+        fr->IndexBuffer = NULL;
+        fr->VertexBuffer = NULL;
+        fr->IndexBufferSize = 10000;
+        fr->VertexBufferSize = 5000;
     }
 
     return true;
@@ -610,10 +635,10 @@ void ImGui_ImplDX12_Shutdown()
 {
     ImGui_ImplDX12_InvalidateDeviceObjects();
     delete[] g_pFrameResources;
+    g_pFrameResources = NULL;
     g_pd3dDevice = NULL;
     g_hFontSrvCpuDescHandle.ptr = 0;
     g_hFontSrvGpuDescHandle.ptr = 0;
-    g_pFrameResources = NULL;
     g_numFramesInFlight = 0;
     g_frameIndex = UINT_MAX;
 }

examples/imgui_impl_dx12.h

@@ -1,8 +1,9 @@
-// ImGui Renderer for: DirectX12
+// dear imgui: Renderer for DirectX12
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 // Issues:
 //  [ ] 64-bit only for now! (Because sizeof(ImTextureId) == sizeof(void*)). See github.com/ocornut/imgui/pull/301
 
@@ -10,6 +11,8 @@
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
+#pragma once
+
 enum DXGI_FORMAT;
 struct ID3D12Device;
 struct ID3D12GraphicsCommandList;
@@ -17,7 +20,7 @@ struct D3D12_CPU_DESCRIPTOR_HANDLE;
 struct D3D12_GPU_DESCRIPTOR_HANDLE;
 
 // cmd_list is the command list that the implementation will use to render imgui draw lists.
-// Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate 
+// Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
 // render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.
 // font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture.
 IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format,

examples/imgui_impl_dx9.cpp

@@ -1,15 +1,21 @@
-// ImGui Renderer for: DirectX9
+// dear imgui: Renderer for DirectX9
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
-// CHANGELOG 
+// CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: DirectX9: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: DirectX9: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: Misc: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects().
+//  2019-01-16: Misc: Disabled fog before drawing UI's. Fixes issue #2288.
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-06-08: Misc: Extracted imgui_impl_dx9.cpp/.h away from the old combined DX9+Win32 example.
 //  2018-06-08: DirectX9: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
 //  2018-05-07: Render: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud.
@@ -39,6 +45,62 @@ struct CUSTOMVERTEX
 };
 #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
 
+static void ImGui_ImplDX9_SetupRenderState(ImDrawData* draw_data)
+{
+    // Setup viewport
+    D3DVIEWPORT9 vp;
+    vp.X = vp.Y = 0;
+    vp.Width = (DWORD)draw_data->DisplaySize.x;
+    vp.Height = (DWORD)draw_data->DisplaySize.y;
+    vp.MinZ = 0.0f;
+    vp.MaxZ = 1.0f;
+    g_pd3dDevice->SetViewport(&vp);
+
+    // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing, shade mode (for gradient)
+    g_pd3dDevice->SetPixelShader(NULL);
+    g_pd3dDevice->SetVertexShader(NULL);
+    g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
+    g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, false);
+    g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true);
+    g_pd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, false);
+    g_pd3dDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
+    g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
+    g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, true);
+    g_pd3dDevice->SetRenderState(D3DRS_SHADEMODE, D3DSHADE_GOURAUD);
+    g_pd3dDevice->SetRenderState(D3DRS_FOGENABLE, false);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
+    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
+    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
+
+    // Setup orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
+    // Being agnostic of whether <d3dx9.h> or <DirectXMath.h> can be used, we aren't relying on D3DXMatrixIdentity()/D3DXMatrixOrthoOffCenterLH() or DirectX::XMMatrixIdentity()/DirectX::XMMatrixOrthographicOffCenterLH()
+    {
+        float L = draw_data->DisplayPos.x + 0.5f;
+        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x + 0.5f;
+        float T = draw_data->DisplayPos.y + 0.5f;
+        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y + 0.5f;
+        D3DMATRIX mat_identity = { { { 1.0f, 0.0f, 0.0f, 0.0f,  0.0f, 1.0f, 0.0f, 0.0f,  0.0f, 0.0f, 1.0f, 0.0f,  0.0f, 0.0f, 0.0f, 1.0f } } };
+        D3DMATRIX mat_projection =
+        { { {
+            2.0f/(R-L),   0.0f,         0.0f,  0.0f,
+            0.0f,         2.0f/(T-B),   0.0f,  0.0f,
+            0.0f,         0.0f,         0.5f,  0.0f,
+            (L+R)/(L-R),  (T+B)/(B-T),  0.5f,  1.0f
+        } } };
+        g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat_identity);
+        g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_projection);
+    }
+}
+
 // Render function.
 // (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
 void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
@@ -108,83 +170,40 @@ void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
     g_pd3dDevice->SetIndices(g_pIB);
     g_pd3dDevice->SetFVF(D3DFVF_CUSTOMVERTEX);
 
-    // Setup viewport
-    D3DVIEWPORT9 vp;
-    vp.X = vp.Y = 0;
-    vp.Width = (DWORD)draw_data->DisplaySize.x;
-    vp.Height = (DWORD)draw_data->DisplaySize.y;
-    vp.MinZ = 0.0f;
-    vp.MaxZ = 1.0f;
-    g_pd3dDevice->SetViewport(&vp);
-
-    // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing, shade mode (for gradient)
-    g_pd3dDevice->SetPixelShader(NULL);
-    g_pd3dDevice->SetVertexShader(NULL);
-    g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
-    g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, false);
-    g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
-    g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, true);
-    g_pd3dDevice->SetRenderState(D3DRS_ALPHATESTENABLE, false);
-    g_pd3dDevice->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD);
-    g_pd3dDevice->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA);
-    g_pd3dDevice->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA);
-    g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, true);
-    g_pd3dDevice->SetRenderState(D3DRS_SHADEMODE, D3DSHADE_GOURAUD);
-    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE);
-    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE);
-    g_pd3dDevice->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE);
-    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE);
-    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE);
-    g_pd3dDevice->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE);
-    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR);
-    g_pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR);
-
-    // Setup orthographic projection matrix
-    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right).
-    // Being agnostic of whether <d3dx9.h> or <DirectXMath.h> can be used, we aren't relying on D3DXMatrixIdentity()/D3DXMatrixOrthoOffCenterLH() or DirectX::XMMatrixIdentity()/DirectX::XMMatrixOrthographicOffCenterLH()
-    {
-        float L = draw_data->DisplayPos.x + 0.5f;
-        float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x + 0.5f;
-        float T = draw_data->DisplayPos.y + 0.5f;
-        float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y + 0.5f;
-        D3DMATRIX mat_identity = { { 1.0f, 0.0f, 0.0f, 0.0f,  0.0f, 1.0f, 0.0f, 0.0f,  0.0f, 0.0f, 1.0f, 0.0f,  0.0f, 0.0f, 0.0f, 1.0f } };
-        D3DMATRIX mat_projection =
-        {
-            2.0f/(R-L),   0.0f,         0.0f,  0.0f,
-            0.0f,         2.0f/(T-B),   0.0f,  0.0f,
-            0.0f,         0.0f,         0.5f,  0.0f,
-            (L+R)/(L-R),  (T+B)/(B-T),  0.5f,  1.0f,
-        };
-        g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat_identity);
-        g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat_identity);
-        g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat_projection);
-    }
+    // Setup desired DX state
+    ImGui_ImplDX9_SetupRenderState(draw_data);
 
     // Render command lists
-    int vtx_offset = 0;
-    int idx_offset = 0;
-    ImVec2 pos = draw_data->DisplayPos;
+    // (Because we merged all buffers into a single one, we maintain our own offset into them)
+    int global_vtx_offset = 0;
+    int global_idx_offset = 0;
+    ImVec2 clip_off = draw_data->DisplayPos;
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
-            if (pcmd->UserCallback)
+            if (pcmd->UserCallback != NULL)
             {
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplDX9_SetupRenderState(draw_data);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                const RECT r = { (LONG)(pcmd->ClipRect.x - pos.x), (LONG)(pcmd->ClipRect.y - pos.y), (LONG)(pcmd->ClipRect.z - pos.x), (LONG)(pcmd->ClipRect.w - pos.y) };
+                const RECT r = { (LONG)(pcmd->ClipRect.x - clip_off.x), (LONG)(pcmd->ClipRect.y - clip_off.y), (LONG)(pcmd->ClipRect.z - clip_off.x), (LONG)(pcmd->ClipRect.w - clip_off.y) };
                 const LPDIRECT3DTEXTURE9 texture = (LPDIRECT3DTEXTURE9)pcmd->TextureId;
                 g_pd3dDevice->SetTexture(0, texture);
                 g_pd3dDevice->SetScissorRect(&r);
-                g_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, vtx_offset, 0, (UINT)cmd_list->VtxBuffer.Size, idx_offset, pcmd->ElemCount/3);
+                g_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, pcmd->VtxOffset + global_vtx_offset, 0, (UINT)cmd_list->VtxBuffer.Size, pcmd->IdxOffset + global_idx_offset, pcmd->ElemCount/3);
             }
-            idx_offset += pcmd->ElemCount;
         }
-        vtx_offset += cmd_list->VtxBuffer.Size;
+        global_idx_offset += cmd_list->IdxBuffer.Size;
+        global_vtx_offset += cmd_list->VtxBuffer.Size;
     }
 
     // Restore the DX9 transform
@@ -199,14 +218,20 @@ void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
 
 bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
 {
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_dx9";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
     g_pd3dDevice = device;
+    g_pd3dDevice->AddRef();
     return true;
 }
 
 void ImGui_ImplDX9_Shutdown()
 {
     ImGui_ImplDX9_InvalidateDeviceObjects();
-    g_pd3dDevice = NULL;
+    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
 }
 
 static bool ImGui_ImplDX9_CreateFontsTexture()
@@ -247,24 +272,9 @@ void ImGui_ImplDX9_InvalidateDeviceObjects()
 {
     if (!g_pd3dDevice)
         return;
-    if (g_pVB)
-    {
-        g_pVB->Release();
-        g_pVB = NULL;
-    }
-    if (g_pIB)
-    {
-        g_pIB->Release();
-        g_pIB = NULL;
-    }
-
-    // At this point note that we set ImGui::GetIO().Fonts->TexID to be == g_FontTexture, so clear both.
-    ImGuiIO& io = ImGui::GetIO();
-    IM_ASSERT(g_FontTexture == io.Fonts->TexID);
-    if (g_FontTexture)
-        g_FontTexture->Release();
-    g_FontTexture = NULL;
-    io.Fonts->TexID = NULL;
+    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+    if (g_FontTexture) { g_FontTexture->Release(); g_FontTexture = NULL; ImGui::GetIO().Fonts->TexID = NULL; } // We copied g_pFontTextureView to io.Fonts->TexID so let's clear that as well.
 }
 
 void ImGui_ImplDX9_NewFrame()

examples/imgui_impl_dx9.h

@@ -1,13 +1,16 @@
-// ImGui Renderer for: DirectX9
+// dear imgui: Renderer for DirectX9
 // This needs to be used along with a Platform Binding (e.g. Win32)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
+#pragma once
+
 struct IDirect3DDevice9;
 
 IMGUI_IMPL_API bool     ImGui_ImplDX9_Init(IDirect3DDevice9* device);
@@ -16,5 +19,5 @@ IMGUI_IMPL_API void     ImGui_ImplDX9_NewFrame();
 IMGUI_IMPL_API void     ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data);
 
 // Use if you want to reset your rendering device without losing ImGui state.
-IMGUI_IMPL_API void     ImGui_ImplDX9_InvalidateDeviceObjects();
 IMGUI_IMPL_API bool     ImGui_ImplDX9_CreateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplDX9_InvalidateDeviceObjects();

examples/imgui_impl_freeglut.h

@@ -1,26 +0,0 @@
-// ImGui Platform Binding for: FreeGLUT
-// This needs to be used along with a Renderer (e.g. OpenGL2)
-
-// Issues:
-//  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
-
-// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
-// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
-// https://github.com/ocornut/imgui
-
-IMGUI_IMPL_API bool     ImGui_ImplFreeGLUT_Init();
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_InstallFuncs();
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_Shutdown();
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_NewFrame();
-
-// You can call ImGui_ImplFreeGLUT_InstallFuncs() to get all those functions installed automatically,
-// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency..
-//---------------------------------------- GLUT name --------------------------------------------- Decent Name ---------
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_ReshapeFunc(int w, int h);                           // ~ ResizeFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_MotionFunc(int x, int y);                            // ~ MouseMoveFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_MouseFunc(int button, int state, int x, int y);      // ~ MouseButtonFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_MouseWheelFunc(int button, int dir, int x, int y);   // ~ MouseWheelFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_KeyboardFunc(unsigned char c, int x, int y);         // ~ CharPressedFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_KeyboardUpFunc(unsigned char c, int x, int y);       // ~ CharReleasedFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_SpecialFunc(int key, int x, int y);                  // ~ KeyPressedFunc
-IMGUI_IMPL_API void     ImGui_ImplFreeGLUT_SpecialUpFunc(int key, int x, int y);                // ~ KeyReleasedFunc

examples/imgui_impl_glfw.cpp

@@ -1,10 +1,11 @@
-// ImGui Platform Binding for: GLFW
+// dear imgui: Platform Binding for GLFW
 // This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
 // (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
+// (Requires: GLFW 3.1+)
 
 // Implemented features:
 //  [X] Platform: Clipboard support.
-//  [X] Platform: Gamepad navigation mapping. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 //  [x] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. FIXME: 3 cursors types are missing from GLFW.
 //  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
 
@@ -14,6 +15,10 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
+//  2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
+//  2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them.
 //  2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
 //  2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
 //  2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples.
@@ -38,11 +43,11 @@
 #define GLFW_EXPOSE_NATIVE_WIN32
 #include <GLFW/glfw3native.h>   // for glfwGetWin32Window
 #endif
-#define GLFW_HAS_WINDOW_TOPMOST     (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING
-#define GLFW_HAS_WINDOW_HOVERED     (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED
-#define GLFW_HAS_WINDOW_ALPHA       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
-#define GLFW_HAS_PER_MONITOR_DPI    (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
-#define GLFW_HAS_VULKAN             (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
+#define GLFW_HAS_WINDOW_TOPMOST       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING
+#define GLFW_HAS_WINDOW_HOVERED       (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED
+#define GLFW_HAS_WINDOW_ALPHA         (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity
+#define GLFW_HAS_PER_MONITOR_DPI      (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale
+#define GLFW_HAS_VULKAN               (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface
 
 // Data
 enum GlfwClientApi
@@ -51,11 +56,17 @@ enum GlfwClientApi
     GlfwClientApi_OpenGL,
     GlfwClientApi_Vulkan
 };
-static GLFWwindow*      g_Window = NULL;
-static GlfwClientApi    g_ClientApi = GlfwClientApi_Unknown;
-static double           g_Time = 0.0;
-static bool             g_MouseJustPressed[5] = { false, false, false, false, false };
-static GLFWcursor*      g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 };
+static GLFWwindow*          g_Window = NULL;    // Main window
+static GlfwClientApi        g_ClientApi = GlfwClientApi_Unknown;
+static double               g_Time = 0.0;
+static bool                 g_MouseJustPressed[5] = { false, false, false, false, false };
+static GLFWcursor*          g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 };
+
+// Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
+static GLFWmousebuttonfun   g_PrevUserCallbackMousebutton = NULL;
+static GLFWscrollfun        g_PrevUserCallbackScroll = NULL;
+static GLFWkeyfun           g_PrevUserCallbackKey = NULL;
+static GLFWcharfun          g_PrevUserCallbackChar = NULL;
 
 static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data)
 {
@@ -67,47 +78,50 @@ static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text)
     glfwSetClipboardString((GLFWwindow*)user_data, text);
 }
 
-void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/)
+void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods)
 {
+    if (g_PrevUserCallbackMousebutton != NULL)
+        g_PrevUserCallbackMousebutton(window, button, action, mods);
+
     if (action == GLFW_PRESS && button >= 0 && button < IM_ARRAYSIZE(g_MouseJustPressed))
         g_MouseJustPressed[button] = true;
 }
 
-void ImGui_ImplGlfw_ScrollCallback(GLFWwindow*, double xoffset, double yoffset)
+void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset)
 {
+    if (g_PrevUserCallbackScroll != NULL)
+        g_PrevUserCallbackScroll(window, xoffset, yoffset);
+
     ImGuiIO& io = ImGui::GetIO();
     io.MouseWheelH += (float)xoffset;
     io.MouseWheel += (float)yoffset;
 }
 
-void ImGui_ImplGlfw_KeyCallback(GLFWwindow*, int key, int, int action, int mods)
+void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods)
 {
+    if (g_PrevUserCallbackKey != NULL)
+        g_PrevUserCallbackKey(window, key, scancode, action, mods);
+
     ImGuiIO& io = ImGui::GetIO();
     if (action == GLFW_PRESS)
         io.KeysDown[key] = true;
     if (action == GLFW_RELEASE)
         io.KeysDown[key] = false;
 
-    (void)mods; // Modifiers are not reliable across systems
+    // Modifiers are not reliable across systems
     io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL];
     io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT];
     io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT];
     io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER];
 }
 
-void ImGui_ImplGlfw_CharCallback(GLFWwindow*, unsigned int c)
+void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
 {
-    ImGuiIO& io = ImGui::GetIO();
-    if (c > 0 && c < 0x10000)
-        io.AddInputCharacter((unsigned short)c);
-}
+    if (g_PrevUserCallbackChar != NULL)
+        g_PrevUserCallbackChar(window, c);
 
-void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window)
-{
-    glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
-    glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
-    glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
-    glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
+    ImGuiIO& io = ImGui::GetIO();
+    io.AddInputCharacter(c);
 }
 
 static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api)
@@ -119,6 +133,7 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     ImGuiIO& io = ImGui::GetIO();
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
     io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
+    io.BackendPlatformName = "imgui_impl_glfw";
 
     // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
     io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;
@@ -158,9 +173,19 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
     g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);  // FIXME: GLFW doesn't have this.
     g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);  // FIXME: GLFW doesn't have this.
     g_MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
-    
+
+    // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any.
+    g_PrevUserCallbackMousebutton = NULL;
+    g_PrevUserCallbackScroll = NULL;
+    g_PrevUserCallbackKey = NULL;
+    g_PrevUserCallbackChar = NULL;
     if (install_callbacks)
-        ImGui_ImplGlfw_InstallCallbacks(window);
+    {
+        g_PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback);
+        g_PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback);
+        g_PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback);
+        g_PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback);
+    }
 
     g_ClientApi = client_api;
     return true;
@@ -241,18 +266,56 @@ static void ImGui_ImplGlfw_UpdateMouseCursor()
     }
 }
 
+static void ImGui_ImplGlfw_UpdateGamepads()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    memset(io.NavInputs, 0, sizeof(io.NavInputs));
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
+
+    // Update gamepad inputs
+    #define MAP_BUTTON(NAV_NO, BUTTON_NO)       { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; }
+    #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; }
+    int axes_count = 0, buttons_count = 0;
+    const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count);
+    const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count);
+    MAP_BUTTON(ImGuiNavInput_Activate,   0);     // Cross / A
+    MAP_BUTTON(ImGuiNavInput_Cancel,     1);     // Circle / B
+    MAP_BUTTON(ImGuiNavInput_Menu,       2);     // Square / X
+    MAP_BUTTON(ImGuiNavInput_Input,      3);     // Triangle / Y
+    MAP_BUTTON(ImGuiNavInput_DpadLeft,   13);    // D-Pad Left
+    MAP_BUTTON(ImGuiNavInput_DpadRight,  11);    // D-Pad Right
+    MAP_BUTTON(ImGuiNavInput_DpadUp,     10);    // D-Pad Up
+    MAP_BUTTON(ImGuiNavInput_DpadDown,   12);    // D-Pad Down
+    MAP_BUTTON(ImGuiNavInput_FocusPrev,  4);     // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_FocusNext,  5);     // R1 / RB
+    MAP_BUTTON(ImGuiNavInput_TweakSlow,  4);     // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_TweakFast,  5);     // R1 / RB
+    MAP_ANALOG(ImGuiNavInput_LStickLeft, 0,  -0.3f,  -0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickRight,0,  +0.3f,  +0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickUp,   1,  +0.3f,  +0.9f);
+    MAP_ANALOG(ImGuiNavInput_LStickDown, 1,  -0.3f,  -0.9f);
+    #undef MAP_BUTTON
+    #undef MAP_ANALOG
+    if (axes_count > 0 && buttons_count > 0)
+        io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
+    else
+        io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
+}
+
 void ImGui_ImplGlfw_NewFrame()
 {
     ImGuiIO& io = ImGui::GetIO();
-    IM_ASSERT(io.Fonts->IsBuilt());     // Font atlas needs to be built, call renderer _NewFrame() function e.g. ImGui_ImplOpenGL3_NewFrame() 
+    IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
 
-    // Setup display size
+    // Setup display size (every frame to accommodate for window resizing)
     int w, h;
     int display_w, display_h;
     glfwGetWindowSize(g_Window, &w, &h);
     glfwGetFramebufferSize(g_Window, &display_w, &display_h);
     io.DisplaySize = ImVec2((float)w, (float)h);
-    io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0);
+    if (w > 0 && h > 0)
+        io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
 
     // Setup time step
     double current_time = glfwGetTime();
@@ -262,37 +325,6 @@ void ImGui_ImplGlfw_NewFrame()
     ImGui_ImplGlfw_UpdateMousePosAndButtons();
     ImGui_ImplGlfw_UpdateMouseCursor();
 
-    // Gamepad navigation mapping [BETA]
-    memset(io.NavInputs, 0, sizeof(io.NavInputs));
-    if (io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad)
-    {
-        // Update gamepad inputs
-        #define MAP_BUTTON(NAV_NO, BUTTON_NO)       { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; }
-        #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; }
-        int axes_count = 0, buttons_count = 0;
-        const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count);
-        const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count);
-        MAP_BUTTON(ImGuiNavInput_Activate,   0);     // Cross / A
-        MAP_BUTTON(ImGuiNavInput_Cancel,     1);     // Circle / B
-        MAP_BUTTON(ImGuiNavInput_Menu,       2);     // Square / X
-        MAP_BUTTON(ImGuiNavInput_Input,      3);     // Triangle / Y
-        MAP_BUTTON(ImGuiNavInput_DpadLeft,   13);    // D-Pad Left
-        MAP_BUTTON(ImGuiNavInput_DpadRight,  11);    // D-Pad Right
-        MAP_BUTTON(ImGuiNavInput_DpadUp,     10);    // D-Pad Up
-        MAP_BUTTON(ImGuiNavInput_DpadDown,   12);    // D-Pad Down
-        MAP_BUTTON(ImGuiNavInput_FocusPrev,  4);     // L1 / LB
-        MAP_BUTTON(ImGuiNavInput_FocusNext,  5);     // R1 / RB
-        MAP_BUTTON(ImGuiNavInput_TweakSlow,  4);     // L1 / LB
-        MAP_BUTTON(ImGuiNavInput_TweakFast,  5);     // R1 / RB
-        MAP_ANALOG(ImGuiNavInput_LStickLeft, 0,  -0.3f,  -0.9f);
-        MAP_ANALOG(ImGuiNavInput_LStickRight,0,  +0.3f,  +0.9f);
-        MAP_ANALOG(ImGuiNavInput_LStickUp,   1,  +0.3f,  +0.9f);
-        MAP_ANALOG(ImGuiNavInput_LStickDown, 1,  -0.3f,  -0.9f);
-        #undef MAP_BUTTON
-        #undef MAP_ANALOG
-        if (axes_count > 0 && buttons_count > 0)
-            io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
-        else
-            io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
-    }
+    // Update game controllers (if enabled and available)
+    ImGui_ImplGlfw_UpdateGamepads();
 }

examples/imgui_impl_glfw.h

@@ -1,10 +1,10 @@
-// ImGui Platform Binding for: GLFW
+// dear imgui: Platform Binding for GLFW
 // This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
 // (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.)
 
 // Implemented features:
 //  [X] Platform: Clipboard support.
-//  [X] Platform: Gamepad navigation mapping. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
+//  [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 //  [x] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. FIXME: 3 cursors types are missing from GLFW.
 //  [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE).
 
@@ -16,6 +16,8 @@
 // The 'glsl_version' initialization parameter defaults to "#version 150" if NULL.
 // Only override if your GL version doesn't handle this GLSL version. Keep NULL if unsure!
 
+#pragma once
+
 struct GLFWwindow;
 
 IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks);
@@ -23,9 +25,8 @@ IMGUI_IMPL_API bool     ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool in
 IMGUI_IMPL_API void     ImGui_ImplGlfw_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplGlfw_NewFrame();
 
-// GLFW callbacks (installed by default if you enable 'install_callbacks' during initialization)
-// Provided here if you want to chain callbacks.
-// You can also handle inputs yourself and use those as a reference.
+// InitXXX function with 'install_callbacks=true': install GLFW callbacks. They will call user's previously installed callbacks, if any.
+// InitXXX function with 'install_callbacks=false': do not install GLFW callbacks. You will need to call them yourself from your own GLFW callbacks.
 IMGUI_IMPL_API void     ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
 IMGUI_IMPL_API void     ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
 IMGUI_IMPL_API void     ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);

examples/imgui_impl_glut.cpp

@@ -1,8 +1,15 @@
-// ImGui Platform Binding for: FreeGLUT
+// dear imgui: Platform Binding for GLUT/FreeGLUT
 // This needs to be used along with a Renderer (e.g. OpenGL2)
 
+// !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
+// !!! If someone or something is teaching you GLUT in 2019, you are being abused. Please show some resistance. !!!
+// !!! Nowadays, prefer using GLFW or SDL instead!
+
 // Issues:
 //  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
+//  [ ] Platform: Missing mouse cursor shape/visibility support.
+//  [ ] Platform: Missing clipboard support (not supported by Glut).
+//  [ ] Platform: Missing gamepad support.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -10,11 +17,18 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
-//  2018-03-22: Added FreeGLUT Platform binding.
+//  2019-04-03: Misc: Renamed imgui_impl_freeglut.cpp/.h to imgui_impl_glut.cpp/.h.
+//  2019-03-25: Misc: Made io.DeltaTime always above zero.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
+//  2018-03-22: Added GLUT Platform binding.
 
 #include "imgui.h"
-#include "imgui_impl_freeglut.h"
-#include <GL/freeglut.h>
+#include "imgui_impl_glut.h"
+#ifdef __APPLE__
+    #include <GLUT/glut.h>
+#else
+    #include <GL/freeglut.h>
+#endif
 
 #ifdef _MSC_VER
 #pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
@@ -22,9 +36,11 @@
 
 static int g_Time = 0;          // Current time, in milliseconds
 
-bool ImGui_ImplFreeGLUT_Init()
+bool ImGui_ImplGLUT_Init()
 {
     ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName ="imgui_impl_glut";
+
     g_Time = 0;
 
     // Glut has 1 function for characters and one for "special keys". We map the characters in the 0..255 range and the keys above.
@@ -53,36 +69,41 @@ bool ImGui_ImplFreeGLUT_Init()
     return true;
 }
 
-void ImGui_ImplFreeGLUT_InstallFuncs()
+void ImGui_ImplGLUT_InstallFuncs()
 {
-    glutReshapeFunc(ImGui_ImplFreeGLUT_ReshapeFunc);
-    glutMotionFunc(ImGui_ImplFreeGLUT_MotionFunc);
-    glutPassiveMotionFunc(ImGui_ImplFreeGLUT_MotionFunc);
-    glutMouseFunc(ImGui_ImplFreeGLUT_MouseFunc);
-    glutMouseWheelFunc(ImGui_ImplFreeGLUT_MouseWheelFunc);
-    glutKeyboardFunc(ImGui_ImplFreeGLUT_KeyboardFunc);
-    glutKeyboardUpFunc(ImGui_ImplFreeGLUT_KeyboardUpFunc);
-    glutSpecialFunc(ImGui_ImplFreeGLUT_SpecialFunc);
-    glutSpecialUpFunc(ImGui_ImplFreeGLUT_SpecialUpFunc);
+    glutReshapeFunc(ImGui_ImplGLUT_ReshapeFunc);
+    glutMotionFunc(ImGui_ImplGLUT_MotionFunc);
+    glutPassiveMotionFunc(ImGui_ImplGLUT_MotionFunc);
+    glutMouseFunc(ImGui_ImplGLUT_MouseFunc);
+#ifdef __FREEGLUT_EXT_H__
+    glutMouseWheelFunc(ImGui_ImplGLUT_MouseWheelFunc);
+#endif
+    glutKeyboardFunc(ImGui_ImplGLUT_KeyboardFunc);
+    glutKeyboardUpFunc(ImGui_ImplGLUT_KeyboardUpFunc);
+    glutSpecialFunc(ImGui_ImplGLUT_SpecialFunc);
+    glutSpecialUpFunc(ImGui_ImplGLUT_SpecialUpFunc);
 }
 
-void ImGui_ImplFreeGLUT_Shutdown()
+void ImGui_ImplGLUT_Shutdown()
 {
 }
 
-void ImGui_ImplFreeGLUT_NewFrame()
+void ImGui_ImplGLUT_NewFrame()
 {
     // Setup time step
     ImGuiIO& io = ImGui::GetIO();
     int current_time = glutGet(GLUT_ELAPSED_TIME);
-    io.DeltaTime = (current_time - g_Time) / 1000.0f;
+    int delta_time_ms = (current_time - g_Time);
+    if (delta_time_ms <= 0)
+        delta_time_ms = 1;
+    io.DeltaTime = delta_time_ms / 1000.0f;
     g_Time = current_time;
 
     // Start the frame
     ImGui::NewFrame();
 }
 
-static void ImGui_ImplFreeGLUT_UpdateKeyboardMods()
+static void ImGui_ImplGLUT_UpdateKeyboardMods()
 {
     ImGuiIO& io = ImGui::GetIO();
     int mods = glutGetModifiers();
@@ -91,15 +112,15 @@ static void ImGui_ImplFreeGLUT_UpdateKeyboardMods()
     io.KeyAlt = (mods & GLUT_ACTIVE_ALT) != 0;
 }
 
-void ImGui_ImplFreeGLUT_KeyboardFunc(unsigned char c, int x, int y)
+void ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y)
 {
     // Send character to imgui
     //printf("char_down_func %d '%c'\n", c, c);
     ImGuiIO& io = ImGui::GetIO();
     if (c >= 32)
-        io.AddInputCharacter(c);
+        io.AddInputCharacter((unsigned int)c);
 
-    // Store letters in KeysDown[] array as both uppercase and lowercase + Handle GLUT translating CTRL+A..CTRL+Z as 1..26. 
+    // Store letters in KeysDown[] array as both uppercase and lowercase + Handle GLUT translating CTRL+A..CTRL+Z as 1..26.
     // This is a hacky mess but GLUT is unable to distinguish e.g. a TAB key from CTRL+I so this is probably the best we can do here.
     if (c >= 1 && c <= 26)
         io.KeysDown[c] = io.KeysDown[c - 1 + 'a'] = io.KeysDown[c - 1 + 'A'] = true;
@@ -109,11 +130,11 @@ void ImGui_ImplFreeGLUT_KeyboardFunc(unsigned char c, int x, int y)
         io.KeysDown[c] = io.KeysDown[c - 'A' + 'a'] = true;
     else
         io.KeysDown[c] = true;
-    ImGui_ImplFreeGLUT_UpdateKeyboardMods();
+    ImGui_ImplGLUT_UpdateKeyboardMods();
     (void)x; (void)y; // Unused
 }
 
-void ImGui_ImplFreeGLUT_KeyboardUpFunc(unsigned char c, int x, int y)
+void ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y)
 {
     //printf("char_up_func %d '%c'\n", c, c);
     ImGuiIO& io = ImGui::GetIO();
@@ -125,31 +146,31 @@ void ImGui_ImplFreeGLUT_KeyboardUpFunc(unsigned char c, int x, int y)
         io.KeysDown[c] = io.KeysDown[c - 'A' + 'a'] = false;
     else
         io.KeysDown[c] = false;
-    ImGui_ImplFreeGLUT_UpdateKeyboardMods();
+    ImGui_ImplGLUT_UpdateKeyboardMods();
     (void)x; (void)y; // Unused
 }
 
-void ImGui_ImplFreeGLUT_SpecialFunc(int key, int x, int y)
+void ImGui_ImplGLUT_SpecialFunc(int key, int x, int y)
 {
     //printf("key_down_func %d\n", key);
     ImGuiIO& io = ImGui::GetIO();
     if (key + 256 < IM_ARRAYSIZE(io.KeysDown))
         io.KeysDown[key + 256] = true;
-    ImGui_ImplFreeGLUT_UpdateKeyboardMods();
+    ImGui_ImplGLUT_UpdateKeyboardMods();
     (void)x; (void)y; // Unused
 }
 
-void ImGui_ImplFreeGLUT_SpecialUpFunc(int key, int x, int y)
+void ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y)
 {
     //printf("key_up_func %d\n", key);
     ImGuiIO& io = ImGui::GetIO();
     if (key + 256 < IM_ARRAYSIZE(io.KeysDown))
         io.KeysDown[key + 256] = false;
-    ImGui_ImplFreeGLUT_UpdateKeyboardMods();
+    ImGui_ImplGLUT_UpdateKeyboardMods();
     (void)x; (void)y; // Unused
 }
 
-void ImGui_ImplFreeGLUT_MouseFunc(int glut_button, int state, int x, int y)
+void ImGui_ImplGLUT_MouseFunc(int glut_button, int state, int x, int y)
 {
     ImGuiIO& io = ImGui::GetIO();
     io.MousePos = ImVec2((float)x, (float)y);
@@ -163,7 +184,8 @@ void ImGui_ImplFreeGLUT_MouseFunc(int glut_button, int state, int x, int y)
         io.MouseDown[button] = false;
 }
 
-void ImGui_ImplFreeGLUT_MouseWheelFunc(int button, int dir, int x, int y)
+#ifdef __FREEGLUT_EXT_H__
+void ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y)
 {
     ImGuiIO& io = ImGui::GetIO();
     io.MousePos = ImVec2((float)x, (float)y);
@@ -173,14 +195,15 @@ void ImGui_ImplFreeGLUT_MouseWheelFunc(int button, int dir, int x, int y)
         io.MouseWheel -= 1.0;
     (void)button; // Unused
 }
+#endif
 
-void ImGui_ImplFreeGLUT_ReshapeFunc(int w, int h)
+void ImGui_ImplGLUT_ReshapeFunc(int w, int h)
 {
     ImGuiIO& io = ImGui::GetIO();
     io.DisplaySize = ImVec2((float)w, (float)h);
 }
 
-void ImGui_ImplFreeGLUT_MotionFunc(int x, int y)
+void ImGui_ImplGLUT_MotionFunc(int x, int y)
 {
     ImGuiIO& io = ImGui::GetIO();
     io.MousePos = ImVec2((float)x, (float)y);

examples/imgui_impl_glut.h

@@ -0,0 +1,35 @@
+// dear imgui: Platform Binding for GLUT/FreeGLUT
+// This needs to be used along with a Renderer (e.g. OpenGL2)
+
+// !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
+// !!! If someone or something is teaching you GLUT in 2019, you are being abused. Please show some resistance. !!!
+// !!! Nowadays, prefer using GLFW or SDL instead!
+
+// Issues:
+//  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
+//  [ ] Platform: Missing mouse cursor shape/visibility support.
+//  [ ] Platform: Missing clipboard support (not supported by Glut).
+//  [ ] Platform: Missing gamepad support.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#pragma once
+
+IMGUI_IMPL_API bool     ImGui_ImplGLUT_Init();
+IMGUI_IMPL_API void     ImGui_ImplGLUT_InstallFuncs();
+IMGUI_IMPL_API void     ImGui_ImplGLUT_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplGLUT_NewFrame();
+
+// You can call ImGui_ImplGLUT_InstallFuncs() to get all those functions installed automatically,
+// or call them yourself from your own GLUT handlers. We are using the same weird names as GLUT for consistency..
+//---------------------------------------- GLUT name --------------------------------------------- Decent Name ---------
+IMGUI_IMPL_API void     ImGui_ImplGLUT_ReshapeFunc(int w, int h);                           // ~ ResizeFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_MotionFunc(int x, int y);                            // ~ MouseMoveFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_MouseFunc(int button, int state, int x, int y);      // ~ MouseButtonFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_MouseWheelFunc(int button, int dir, int x, int y);   // ~ MouseWheelFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_KeyboardFunc(unsigned char c, int x, int y);         // ~ CharPressedFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_KeyboardUpFunc(unsigned char c, int x, int y);       // ~ CharReleasedFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_SpecialFunc(int key, int x, int y);                  // ~ KeyPressedFunc
+IMGUI_IMPL_API void     ImGui_ImplGLUT_SpecialUpFunc(int key, int x, int y);                // ~ KeyReleasedFunc

examples/imgui_impl_marmalade.cpp

@@ -1,8 +1,10 @@
-// ImGui Renderer + Platform Binding for: Marmalade + IwGx
-// Marmalade code: Copyright (C) 2015 by Giovanni Zito (this file is part of ImGui)
+// dear imgui: Renderer + Platform Binding for Marmalade + IwGx
+// Marmalade code: Copyright (C) 2015 by Giovanni Zito (this file is part of Dear ImGui)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+// Missing features:
+//  [ ] Renderer: Clipping rectangles are not honored.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -10,6 +12,8 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter().
+//  2018-11-30: Misc: Setting up io.BackendPlatformName/io.BackendRendererName so they can be displayed in the About Window.
 //  2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_Marmalade_RenderDrawData() in the .h file so you can call it yourself.
 //  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
 //  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
@@ -37,12 +41,12 @@ static ImVec2       g_RenderScale = ImVec2(1.0f,1.0f);
 // (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
 void ImGui_Marmalade_RenderDrawData(ImDrawData* draw_data)
 {
-    // Handle cases of screen coordinates != from framebuffer coordinates (e.g. retina displays)
-    ImGuiIO& io = ImGui::GetIO();
-    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
+    // Avoid rendering when minimized
+    if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f)
+        return;
 
     // Render command lists
-    for(int n = 0; n < draw_data->CmdListsCount; n++)
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
         const ImDrawIdx* idx_buffer = cmd_list->IdxBuffer.Data;
@@ -51,9 +55,9 @@ void ImGui_Marmalade_RenderDrawData(ImDrawData* draw_data)
         CIwFVec2* pUVStream = IW_GX_ALLOC(CIwFVec2, nVert);
         CIwColour* pColStream = IW_GX_ALLOC(CIwColour, nVert);
 
-        for( int i=0; i < nVert; i++ )
+        for (int i = 0; i < nVert; i++)
         {
-            // TODO: optimize multiplication on gpu using vertex shader/projection matrix.
+            // FIXME-OPT: optimize multiplication on GPU using vertex shader/projection matrix.
             pVertStream[i].x = cmd_list->VtxBuffer[i].pos.x * g_RenderScale.x;
             pVertStream[i].y = cmd_list->VtxBuffer[i].pos.y * g_RenderScale.y;
             pUVStream[i].x = cmd_list->VtxBuffer[i].uv.x;
@@ -75,6 +79,7 @@ void ImGui_Marmalade_RenderDrawData(ImDrawData* draw_data)
             }
             else
             {
+                // FIXME: Not honoring ClipRect fields.
                 CIwMaterial* pCurrentMaterial = IW_GX_ALLOC_MATERIAL();
                 pCurrentMaterial->SetShadeMode(CIwMaterial::SHADE_FLAT);
                 pCurrentMaterial->SetCullMode(CIwMaterial::CULL_NONE);
@@ -162,8 +167,7 @@ int32 ImGui_Marmalade_CharCallback(void* system_data, void* user_data)
 {
     ImGuiIO& io = ImGui::GetIO();
     s3eKeyboardCharEvent* e = (s3eKeyboardCharEvent*)system_data;
-    if ((e->m_Char > 0 && e->m_Char < 0x10000))
-        io.AddInputCharacter((unsigned short)e->m_Char);
+    io.AddInputCharacter((unsigned int)e->m_Char);
 
     return 0;
 }
@@ -214,6 +218,8 @@ void    ImGui_Marmalade_InvalidateDeviceObjects()
 bool    ImGui_Marmalade_Init(bool install_callbacks)
 {
     ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = io.BackendRendererName = "imgui_impl_marmalade";
+
     io.KeyMap[ImGuiKey_Tab] = s3eKeyTab;                     // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
     io.KeyMap[ImGuiKey_LeftArrow] = s3eKeyLeft;
     io.KeyMap[ImGuiKey_RightArrow] = s3eKeyRight;

examples/imgui_impl_marmalade.h

@@ -1,4 +1,5 @@
-// ImGui Renderer + Platform Binding for: Marmalade + IwGx
+// dear imgui: Renderer + Platform Binding for Marmalade + IwGx
+// Marmalade code: Copyright (C) 2015 by Giovanni Zito (this file is part of Dear ImGui)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'CIwTexture*' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
@@ -7,8 +8,7 @@
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
-// Copyright (C) 2015 by Giovanni Zito
-// This file is part of ImGui
+#pragma once
 
 IMGUI_IMPL_API bool     ImGui_Marmalade_Init(bool install_callbacks);
 IMGUI_IMPL_API void     ImGui_Marmalade_Shutdown();

examples/imgui_impl_metal.h

@@ -1,8 +1,9 @@
-// ImGui Renderer for: Metal
+// dear imgui: Renderer for Metal
 // This needs to be used along with a Platform Binding (e.g. OSX)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'MTLTexture' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.

examples/imgui_impl_metal.mm

@@ -1,8 +1,9 @@
-// ImGui Renderer for: Metal
+// dear imgui: Renderer for Metal
 // This needs to be used along with a Platform Binding (e.g. OSX)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'MTLTexture' as ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -10,13 +11,17 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: Metal: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: Metal: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-02-11: Metal: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-07-05: Metal: Added new Metal backend implementation.
 
 #include "imgui.h"
 #include "imgui_impl_metal.h"
 
 #import <Metal/Metal.h>
-#import <QuartzCore/CAMetalLayer.h>
+// #import <QuartzCore/CAMetalLayer.h> // Not supported in XCode 9.2. Maybe a macro to detect the SDK version can be used (something like #if MACOS_SDK >= 10.13 ...)
 #import <simd/simd.h>
 
 #pragma mark - Support classes
@@ -54,6 +59,12 @@
 - (void)enqueueReusableBuffer:(MetalBuffer *)buffer;
 - (id<MTLRenderPipelineState>)renderPipelineStateForFrameAndDevice:(id<MTLDevice>)device;
 - (void)emptyRenderPipelineStateCache;
+- (void)setupRenderState:(ImDrawData *)drawData
+           commandBuffer:(id<MTLCommandBuffer>)commandBuffer
+          commandEncoder:(id<MTLRenderCommandEncoder>)commandEncoder
+     renderPipelineState:(id<MTLRenderPipelineState>)renderPipelineState
+            vertexBuffer:(MetalBuffer *)vertexBuffer
+      vertexBufferOffset:(size_t)vertexBufferOffset;
 - (void)renderDrawData:(ImDrawData *)drawData
          commandBuffer:(id<MTLCommandBuffer>)commandBuffer
         commandEncoder:(id<MTLRenderCommandEncoder>)commandEncoder;
@@ -65,11 +76,15 @@ static MetalContext *g_sharedMetalContext = nil;
 
 bool ImGui_ImplMetal_Init(id<MTLDevice> device)
 {
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_metal";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         g_sharedMetalContext = [[MetalContext alloc] init];
     });
-    
+
     ImGui_ImplMetal_CreateDeviceObjects(device);
 
     return true;
@@ -82,7 +97,7 @@ void ImGui_ImplMetal_Shutdown()
 
 void ImGui_ImplMetal_NewFrame(MTLRenderPassDescriptor *renderPassDescriptor)
 {
-    IM_ASSERT(g_sharedMetalContext != nil && "No Metal context. Did you call ImGui_ImplMetal_Init?");
+    IM_ASSERT(g_sharedMetalContext != nil && "No Metal context. Did you call ImGui_ImplMetal_Init() ?");
 
     g_sharedMetalContext.framebufferDescriptor = [[FramebufferDescriptor alloc] initWithRenderPassDescriptor:renderPassDescriptor];
 }
@@ -96,7 +111,7 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer>
 bool ImGui_ImplMetal_CreateFontsTexture(id<MTLDevice> device)
 {
     [g_sharedMetalContext makeFontTextureWithDevice:device];
-    
+
     ImGuiIO& io = ImGui::GetIO();
     io.Fonts->TexID = (__bridge void *)g_sharedMetalContext.fontTexture; // ImTextureID == void*
 
@@ -128,9 +143,9 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
 #pragma mark - MetalBuffer implementation
 
 @implementation MetalBuffer
-- (instancetype)initWithBuffer:(id<MTLBuffer>)buffer 
+- (instancetype)initWithBuffer:(id<MTLBuffer>)buffer
 {
-    if ((self = [super init])) 
+    if ((self = [super init]))
     {
         _buffer = buffer;
         _lastReuseTime = [NSDate date].timeIntervalSince1970;
@@ -142,9 +157,9 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
 #pragma mark - FramebufferDescriptor implementation
 
 @implementation FramebufferDescriptor
-- (instancetype)initWithRenderPassDescriptor:(MTLRenderPassDescriptor *)renderPassDescriptor 
+- (instancetype)initWithRenderPassDescriptor:(MTLRenderPassDescriptor *)renderPassDescriptor
 {
-    if ((self = [super init])) 
+    if ((self = [super init]))
     {
         _sampleCount = renderPassDescriptor.colorAttachments[0].texture.sampleCount;
         _colorPixelFormat = renderPassDescriptor.colorAttachments[0].texture.pixelFormat;
@@ -154,7 +169,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     return self;
 }
 
-- (nonnull id)copyWithZone:(nullable NSZone *)zone 
+- (nonnull id)copyWithZone:(nullable NSZone *)zone
 {
     FramebufferDescriptor *copy = [[FramebufferDescriptor allocWithZone:zone] init];
     copy.sampleCount = self.sampleCount;
@@ -164,7 +179,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     return copy;
 }
 
-- (NSUInteger)hash 
+- (NSUInteger)hash
 {
     NSUInteger sc = _sampleCount & 0x3;
     NSUInteger cf = _colorPixelFormat & 0x3FF;
@@ -174,7 +189,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     return hash;
 }
 
-- (BOOL)isEqual:(id)object 
+- (BOOL)isEqual:(id)object
 {
     FramebufferDescriptor *other = object;
     if (![other isKindOfClass:[FramebufferDescriptor class]])
@@ -191,7 +206,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
 
 @implementation MetalContext
 - (instancetype)init {
-    if ((self = [super init])) 
+    if ((self = [super init]))
     {
         _renderPipelineStateCache = [NSMutableDictionary dictionary];
         _bufferCache = [NSMutableArray array];
@@ -200,7 +215,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     return self;
 }
 
-- (void)makeDeviceObjectsWithDevice:(id<MTLDevice>)device 
+- (void)makeDeviceObjectsWithDevice:(id<MTLDevice>)device
 {
     MTLDepthStencilDescriptor *depthStencilDescriptor = [[MTLDepthStencilDescriptor alloc] init];
     depthStencilDescriptor.depthWriteEnabled = NO;
@@ -212,7 +227,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
 // In theory we could call GetTexDataAsAlpha8() and upload a 1-channel texture to save on memory access bandwidth.
 // However, using a shader designed for 1-channel texture would make it less obvious to use the ImTextureID facility to render users own textures.
 // You can make that change in your implementation.
-- (void)makeFontTextureWithDevice:(id<MTLDevice>)device 
+- (void)makeFontTextureWithDevice:(id<MTLDevice>)device
 {
     ImGuiIO &io = ImGui::GetIO();
     unsigned char* pixels;
@@ -233,17 +248,17 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     self.fontTexture = texture;
 }
 
-- (MetalBuffer *)dequeueReusableBufferOfLength:(NSUInteger)length device:(id<MTLDevice>)device 
+- (MetalBuffer *)dequeueReusableBufferOfLength:(NSUInteger)length device:(id<MTLDevice>)device
 {
     NSTimeInterval now = [NSDate date].timeIntervalSince1970;
-    
+
     // Purge old buffers that haven't been useful for a while
-    if (now - self.lastBufferCachePurge > 1.0) 
+    if (now - self.lastBufferCachePurge > 1.0)
     {
         NSMutableArray *survivors = [NSMutableArray array];
-        for (MetalBuffer *candidate in self.bufferCache) 
+        for (MetalBuffer *candidate in self.bufferCache)
         {
-            if (candidate.lastReuseTime > self.lastBufferCachePurge) 
+            if (candidate.lastReuseTime > self.lastBufferCachePurge)
             {
                 [survivors addObject:candidate];
             }
@@ -251,51 +266,51 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
         self.bufferCache = [survivors mutableCopy];
         self.lastBufferCachePurge = now;
     }
-    
+
     // See if we have a buffer we can reuse
     MetalBuffer *bestCandidate = nil;
-    for (MetalBuffer *candidate in self.bufferCache) 
+    for (MetalBuffer *candidate in self.bufferCache)
         if (candidate.buffer.length >= length && (bestCandidate == nil || bestCandidate.lastReuseTime > candidate.lastReuseTime))
             bestCandidate = candidate;
-    
-    if (bestCandidate != nil) 
+
+    if (bestCandidate != nil)
     {
         [self.bufferCache removeObject:bestCandidate];
         bestCandidate.lastReuseTime = now;
         return bestCandidate;
     }
-    
+
     // No luck; make a new buffer
     id<MTLBuffer> backing = [device newBufferWithLength:length options:MTLResourceStorageModeShared];
     return [[MetalBuffer alloc] initWithBuffer:backing];
 }
 
-- (void)enqueueReusableBuffer:(MetalBuffer *)buffer 
+- (void)enqueueReusableBuffer:(MetalBuffer *)buffer
 {
     [self.bufferCache addObject:buffer];
 }
 
-- (_Nullable id<MTLRenderPipelineState>)renderPipelineStateForFrameAndDevice:(id<MTLDevice>)device 
+- (_Nullable id<MTLRenderPipelineState>)renderPipelineStateForFrameAndDevice:(id<MTLDevice>)device
 {
     // Try to retrieve a render pipeline state that is compatible with the framebuffer config for this frame
-    // Thie hit rate for this cache should be very near 100%.
+    // The hit rate for this cache should be very near 100%.
     id<MTLRenderPipelineState> renderPipelineState = self.renderPipelineStateCache[self.framebufferDescriptor];
-    
-    if (renderPipelineState == nil) 
+
+    if (renderPipelineState == nil)
     {
         // No luck; make a new render pipeline state
         renderPipelineState = [self _renderPipelineStateForFramebufferDescriptor:self.framebufferDescriptor device:device];
         // Cache render pipeline state for later reuse
         self.renderPipelineStateCache[self.framebufferDescriptor] = renderPipelineState;
     }
-    
+
     return renderPipelineState;
 }
 
 - (id<MTLRenderPipelineState>)_renderPipelineStateForFramebufferDescriptor:(FramebufferDescriptor *)descriptor device:(id<MTLDevice>)device
 {
     NSError *error = nil;
-    
+
     NSString *shaderSource = @""
     "#include <metal_stdlib>\n"
     "using namespace metal;\n"
@@ -331,23 +346,23 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     "    half4 texColor = texture.sample(linearSampler, in.texCoords);\n"
     "    return half4(in.color) * texColor;\n"
     "}\n";
-    
+
     id<MTLLibrary> library = [device newLibraryWithSource:shaderSource options:nil error:&error];
-    if (library == nil) 
+    if (library == nil)
     {
         NSLog(@"Error: failed to create Metal library: %@", error);
         return nil;
     }
-    
+
     id<MTLFunction> vertexFunction = [library newFunctionWithName:@"vertex_main"];
     id<MTLFunction> fragmentFunction = [library newFunctionWithName:@"fragment_main"];
-    
-    if (vertexFunction == nil || fragmentFunction == nil) 
+
+    if (vertexFunction == nil || fragmentFunction == nil)
     {
         NSLog(@"Error: failed to find Metal shader functions in library: %@", error);
         return nil;
     }
-    
+
     MTLVertexDescriptor *vertexDescriptor = [MTLVertexDescriptor vertexDescriptor];
     vertexDescriptor.attributes[0].offset = IM_OFFSETOF(ImDrawVert, pos);
     vertexDescriptor.attributes[0].format = MTLVertexFormatFloat2; // position
@@ -361,7 +376,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     vertexDescriptor.layouts[0].stepRate = 1;
     vertexDescriptor.layouts[0].stepFunction = MTLVertexStepFunctionPerVertex;
     vertexDescriptor.layouts[0].stride = sizeof(ImDrawVert);
-    
+
     MTLRenderPipelineDescriptor *pipelineDescriptor = [[MTLRenderPipelineDescriptor alloc] init];
     pipelineDescriptor.vertexFunction = vertexFunction;
     pipelineDescriptor.fragmentFunction = fragmentFunction;
@@ -377,49 +392,45 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     pipelineDescriptor.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOneMinusSourceAlpha;
     pipelineDescriptor.depthAttachmentPixelFormat = self.framebufferDescriptor.depthPixelFormat;
     pipelineDescriptor.stencilAttachmentPixelFormat = self.framebufferDescriptor.stencilPixelFormat;
-    
+
     id<MTLRenderPipelineState> renderPipelineState = [device newRenderPipelineStateWithDescriptor:pipelineDescriptor error:&error];
-    if (error != nil) 
+    if (error != nil)
     {
         NSLog(@"Error: failed to create Metal pipeline state: %@", error);
     }
-    
+
     return renderPipelineState;
 }
 
-- (void)emptyRenderPipelineStateCache 
+- (void)emptyRenderPipelineStateCache
 {
     [self.renderPipelineStateCache removeAllObjects];
 }
 
-- (void)renderDrawData:(ImDrawData *)drawData
-         commandBuffer:(id<MTLCommandBuffer>)commandBuffer
-        commandEncoder:(id<MTLRenderCommandEncoder>)commandEncoder
+- (void)setupRenderState:(ImDrawData *)drawData
+           commandBuffer:(id<MTLCommandBuffer>)commandBuffer
+          commandEncoder:(id<MTLRenderCommandEncoder>)commandEncoder
+     renderPipelineState:(id<MTLRenderPipelineState>)renderPipelineState
+            vertexBuffer:(MetalBuffer *)vertexBuffer
+      vertexBufferOffset:(size_t)vertexBufferOffset
 {
-    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    ImGuiIO &io = ImGui::GetIO();
-    int fb_width = (int)(drawData->DisplaySize.x * io.DisplayFramebufferScale.x);
-    int fb_height = (int)(drawData->DisplaySize.y * io.DisplayFramebufferScale.y);
-    if (fb_width <= 0 || fb_height <= 0 || drawData->CmdListsCount == 0)
-        return;
-    drawData->ScaleClipRects(io.DisplayFramebufferScale);
-    
     [commandEncoder setCullMode:MTLCullModeNone];
     [commandEncoder setDepthStencilState:g_sharedMetalContext.depthStencilState];
-    
+
     // Setup viewport, orthographic projection matrix
-    // Our visible imgui space lies from draw_data->DisplayPps (top left) to
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to
     // draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
-    MTLViewport viewport = 
-    {   
+    MTLViewport viewport =
+    {
         .originX = 0.0,
         .originY = 0.0,
-        .width = double(fb_width),
-        .height = double(fb_height),
+        .width = (double)(drawData->DisplaySize.x * drawData->FramebufferScale.x),
+        .height = (double)(drawData->DisplaySize.y * drawData->FramebufferScale.y),
         .znear = 0.0,
-        .zfar = 1.0 
+        .zfar = 1.0
     };
     [commandEncoder setViewport:viewport];
+
     float L = drawData->DisplayPos.x;
     float R = drawData->DisplayPos.x + drawData->DisplaySize.x;
     float T = drawData->DisplayPos.y;
@@ -433,79 +444,101 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
         { 0.0f,         0.0f,        1/(F-N),   0.0f },
         { (R+L)/(L-R),  (T+B)/(B-T), N/(F-N),   1.0f },
     };
-    
     [commandEncoder setVertexBytes:&ortho_projection length:sizeof(ortho_projection) atIndex:1];
-    
-    size_t vertexBufferLength = 0;
-    size_t indexBufferLength = 0;
-    for (int n = 0; n < drawData->CmdListsCount; n++) 
-    {
-        const ImDrawList* cmd_list = drawData->CmdLists[n];
-        vertexBufferLength += cmd_list->VtxBuffer.Size * sizeof(ImDrawVert);
-        indexBufferLength += cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx);
-    }
-    
-    MetalBuffer *vertexBuffer = [self dequeueReusableBufferOfLength:vertexBufferLength device:commandBuffer.device];
-    MetalBuffer *indexBuffer = [self dequeueReusableBufferOfLength:indexBufferLength device:commandBuffer.device];
-    
-    id<MTLRenderPipelineState> renderPipelineState = [self renderPipelineStateForFrameAndDevice:commandBuffer.device];
+
     [commandEncoder setRenderPipelineState:renderPipelineState];
-    
+
     [commandEncoder setVertexBuffer:vertexBuffer.buffer offset:0 atIndex:0];
-    
+    [commandEncoder setVertexBufferOffset:vertexBufferOffset atIndex:0];
+}
+
+- (void)renderDrawData:(ImDrawData *)drawData
+         commandBuffer:(id<MTLCommandBuffer>)commandBuffer
+        commandEncoder:(id<MTLRenderCommandEncoder>)commandEncoder
+{
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    int fb_width = (int)(drawData->DisplaySize.x * drawData->FramebufferScale.x);
+    int fb_height = (int)(drawData->DisplaySize.y * drawData->FramebufferScale.y);
+    if (fb_width <= 0 || fb_height <= 0 || drawData->CmdListsCount == 0)
+        return;
+
+    id<MTLRenderPipelineState> renderPipelineState = [self renderPipelineStateForFrameAndDevice:commandBuffer.device];
+
+    size_t vertexBufferLength = drawData->TotalVtxCount * sizeof(ImDrawVert);
+    size_t indexBufferLength = drawData->TotalIdxCount * sizeof(ImDrawIdx);
+    MetalBuffer* vertexBuffer = [self dequeueReusableBufferOfLength:vertexBufferLength device:commandBuffer.device];
+    MetalBuffer* indexBuffer = [self dequeueReusableBufferOfLength:indexBufferLength device:commandBuffer.device];
+
+    [self setupRenderState:drawData commandBuffer:commandBuffer commandEncoder:commandEncoder renderPipelineState:renderPipelineState vertexBuffer:vertexBuffer vertexBufferOffset:0];
+
+    // Will project scissor/clipping rectangles into framebuffer space
+    ImVec2 clip_off = drawData->DisplayPos;         // (0,0) unless using multi-viewports
+    ImVec2 clip_scale = drawData->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
+
+    // Render command lists
     size_t vertexBufferOffset = 0;
     size_t indexBufferOffset = 0;
-    ImVec2 pos = drawData->DisplayPos;
     for (int n = 0; n < drawData->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = drawData->CmdLists[n];
-        ImDrawIdx idx_buffer_offset = 0;
-        
+
         memcpy((char *)vertexBuffer.buffer.contents + vertexBufferOffset, cmd_list->VtxBuffer.Data, cmd_list->VtxBuffer.Size * sizeof(ImDrawVert));
         memcpy((char *)indexBuffer.buffer.contents + indexBufferOffset, cmd_list->IdxBuffer.Data, cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx));
-        
-        [commandEncoder setVertexBufferOffset:vertexBufferOffset atIndex:0];
-        
+
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
             if (pcmd->UserCallback)
             {
-                // User callback (registered via ImDrawList::AddCallback)
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    [self setupRenderState:drawData commandBuffer:commandBuffer commandEncoder:commandEncoder renderPipelineState:renderPipelineState vertexBuffer:vertexBuffer vertexBufferOffset:vertexBufferOffset];
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                ImVec4 clip_rect = ImVec4(pcmd->ClipRect.x - pos.x, pcmd->ClipRect.y - pos.y, pcmd->ClipRect.z - pos.x, pcmd->ClipRect.w - pos.y);
+                // Project scissor/clipping rectangles into framebuffer space
+                ImVec4 clip_rect;
+                clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x;
+                clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y;
+                clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
+                clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
+
                 if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
                 {
                     // Apply scissor/clipping rectangle
-                    MTLScissorRect scissorRect = { .x = NSUInteger(clip_rect.x),
+                    MTLScissorRect scissorRect =
+                    {
+                        .x = NSUInteger(clip_rect.x),
                         .y = NSUInteger(clip_rect.y),
                         .width = NSUInteger(clip_rect.z - clip_rect.x),
-                        .height = NSUInteger(clip_rect.w - clip_rect.y) };
+                        .height = NSUInteger(clip_rect.w - clip_rect.y)
+                    };
                     [commandEncoder setScissorRect:scissorRect];
-                    
-                    
+
+
                     // Bind texture, Draw
                     if (pcmd->TextureId != NULL)
                         [commandEncoder setFragmentTexture:(__bridge id<MTLTexture>)(pcmd->TextureId) atIndex:0];
+
+                    [commandEncoder setVertexBufferOffset:(vertexBufferOffset + pcmd->VtxOffset * sizeof(ImDrawVert)) atIndex:0];
                     [commandEncoder drawIndexedPrimitives:MTLPrimitiveTypeTriangle
                                                indexCount:pcmd->ElemCount
                                                 indexType:sizeof(ImDrawIdx) == 2 ? MTLIndexTypeUInt16 : MTLIndexTypeUInt32
                                               indexBuffer:indexBuffer.buffer
-                                        indexBufferOffset:indexBufferOffset + idx_buffer_offset];
+                                        indexBufferOffset:indexBufferOffset + pcmd->IdxOffset * sizeof(ImDrawIdx)];
                 }
             }
-            idx_buffer_offset += pcmd->ElemCount * sizeof(ImDrawIdx);
         }
-        
+
         vertexBufferOffset += cmd_list->VtxBuffer.Size * sizeof(ImDrawVert);
         indexBufferOffset += cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx);
     }
-    
+
     __weak id weakSelf = self;
-    [commandBuffer addCompletedHandler:^(id<MTLCommandBuffer>) 
+    [commandBuffer addCompletedHandler:^(id<MTLCommandBuffer>)
     {
         dispatch_async(dispatch_get_main_queue(), ^{
             [weakSelf enqueueReusableBuffer:vertexBuffer];

examples/imgui_impl_opengl2.cpp

@@ -1,4 +1,4 @@
-// ImGui Renderer for: OpenGL2 (legacy OpenGL, fixed pipeline)
+// dear imgui: Renderer for OpenGL2 (legacy OpenGL, fixed pipeline)
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
@@ -13,11 +13,14 @@
 // This code is mostly provided as a reference to learn how ImGui integration works, because it is shorter to read.
 // If your code is using GL3+ context or any semi modern OpenGL calls, using this is likely to make everything more
 // complicated, will require your code to reset every single OpenGL attributes to their initial state, and might
-// confuse your GPU driver. 
+// confuse your GPU driver.
 // The GL2 code is unable to reset attributes or even call e.g. "glUseProgram(0)" because they don't exist in that API.
 
-// CHANGELOG 
+// CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
 //  2018-08-03: OpenGL: Disabling/restoring GL_LIGHTING and GL_COLOR_MATERIAL to increase compatibility with legacy OpenGL applications.
 //  2018-06-08: Misc: Extracted imgui_impl_opengl2.cpp/.h away from the old combined GLFW/SDL+OpenGL2 examples.
 //  2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle.
@@ -42,6 +45,7 @@
 #define WINGDIAPI __declspec(dllimport)     // Some Windows OpenGL headers need this
 #endif
 #if defined(__APPLE__)
+#define GL_SILENCE_DEPRECATION
 #include <OpenGL/gl.h>
 #else
 #include <GL/gl.h>
@@ -53,6 +57,9 @@ static GLuint       g_FontTexture = 0;
 // Functions
 bool    ImGui_ImplOpenGL2_Init()
 {
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_opengl2";
     return true;
 }
 
@@ -67,26 +74,9 @@ void    ImGui_ImplOpenGL2_NewFrame()
         ImGui_ImplOpenGL2_CreateDeviceObjects();
 }
 
-// OpenGL2 Render function.
-// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
-// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so. 
-void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
+static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height)
 {
-    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    ImGuiIO& io = ImGui::GetIO();
-    int fb_width = (int)(draw_data->DisplaySize.x * io.DisplayFramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * io.DisplayFramebufferScale.y);
-    if (fb_width == 0 || fb_height == 0)
-        return;
-    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
-
-    // We are using the OpenGL fixed pipeline to make the example code simpler to read!
     // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers, polygon fill.
-    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
-    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
-    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
-    GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box); 
-    glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     glDisable(GL_CULL_FACE);
@@ -99,10 +89,17 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
     glEnableClientState(GL_COLOR_ARRAY);
     glEnable(GL_TEXTURE_2D);
     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-    //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
+
+    // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
+    // you may need to backup/reset/restore current shader using the lines below. DO NOT MODIFY THIS FILE! Add the code in your calling function:
+    //  GLint last_program;
+    //  glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    //  glUseProgram(0);
+    //  ImGui_ImplOpenGL2_RenderDrawData(...);
+    //  glUseProgram(last_program)
 
     // Setup viewport, orthographic projection matrix
-    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
     glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
     glMatrixMode(GL_PROJECTION);
     glPushMatrix();
@@ -111,9 +108,34 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
     glMatrixMode(GL_MODELVIEW);
     glPushMatrix();
     glLoadIdentity();
+}
+
+// OpenGL2 Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
+void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    if (fb_width == 0 || fb_height == 0)
+        return;
+
+    // Backup GL state
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
+    glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
+
+    // Setup desired GL state
+    ImGui_ImplOpenGL2_SetupRenderState(draw_data, fb_width, fb_height);
+
+    // Will project scissor/clipping rectangles into framebuffer space
+    ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
+    ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
 
     // Render command lists
-    ImVec2 pos = draw_data->DisplayPos;
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
@@ -128,12 +150,22 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
             if (pcmd->UserCallback)
             {
-                // User callback (registered via ImDrawList::AddCallback)
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplOpenGL2_SetupRenderState(draw_data, fb_width, fb_height);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                ImVec4 clip_rect = ImVec4(pcmd->ClipRect.x - pos.x, pcmd->ClipRect.y - pos.y, pcmd->ClipRect.z - pos.x, pcmd->ClipRect.w - pos.y);
+                // Project scissor/clipping rectangles into framebuffer space
+                ImVec4 clip_rect;
+                clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x;
+                clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y;
+                clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
+                clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
+
                 if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
                 {
                     // Apply scissor/clipping rectangle
@@ -148,7 +180,7 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
         }
     }
 
-    // Restore modified state
+    // Restore modified GL state
     glDisableClientState(GL_COLOR_ARRAY);
     glDisableClientState(GL_TEXTURE_COORD_ARRAY);
     glDisableClientState(GL_VERTEX_ARRAY);

examples/imgui_impl_opengl2.h

@@ -1,4 +1,4 @@
-// ImGui Renderer for: OpenGL2 (legacy OpenGL, fixed pipeline)
+// dear imgui: Renderer for OpenGL2 (legacy OpenGL, fixed pipeline)
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
@@ -13,9 +13,11 @@
 // This code is mostly provided as a reference to learn how ImGui integration works, because it is shorter to read.
 // If your code is using GL3+ context or any semi modern OpenGL calls, using this is likely to make everything more
 // complicated, will require your code to reset every single OpenGL attributes to their initial state, and might
-// confuse your GPU driver. 
+// confuse your GPU driver.
 // The GL2 code is unable to reset attributes or even call e.g. "glUseProgram(0)" because they don't exist in that API.
 
+#pragma once
+
 IMGUI_IMPL_API bool     ImGui_ImplOpenGL2_Init();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplOpenGL2_NewFrame();

examples/imgui_impl_opengl3.cpp

@@ -1,9 +1,11 @@
-// ImGui Renderer for: OpenGL3 / OpenGL ES2 / OpenGL ES3 (modern OpenGL with shaders / programmatic pipeline)
+// dear imgui: Renderer for modern OpenGL with shaders / programmatic pipeline
+// - Desktop GL: 3.x 4.x
+// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
-// (Note: We are using GL3W as a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc..)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
@@ -11,6 +13,16 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag.
+//  2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state.
+//  2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop.
+//  2019-03-15: OpenGL: Added a dummy GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early.
+//  2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0).
+//  2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader.
+//  2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display.
+//  2019-02-01: OpenGL: Using GLSL 410 shaders for any version over 410 (e.g. 430, 450).
+//  2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window.
+//  2018-11-13: OpenGL: Support for GL 4.5's glClipControl(GL_UPPER_LEFT) / GL_CLIP_ORIGIN.
 //  2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used.
 //  2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES".
 //  2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation.
@@ -34,17 +46,17 @@
 // version   version   string
 //----------------------------------------
 //  2.0       110       "#version 110"
-//  2.1       120
-//  3.0       130
-//  3.1       140
+//  2.1       120       "#version 120"
+//  3.0       130       "#version 130"
+//  3.1       140       "#version 140"
 //  3.2       150       "#version 150"
-//  3.3       330
-//  4.0       400
+//  3.3       330       "#version 330 core"
+//  4.0       400       "#version 400 core"
 //  4.1       410       "#version 410 core"
-//  4.2       420
-//  4.3       430
-//  ES 2.0    100       "#version 100"
-//  ES 3.0    300       "#version 300 es"
+//  4.2       420       "#version 410 core"
+//  4.3       430       "#version 430 core"
+//  ES 2.0    100       "#version 100"      = WebGL 1.0
+//  ES 3.0    300       "#version 300 es"   = WebGL 2.0
 //----------------------------------------
 
 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
@@ -63,44 +75,65 @@
 #include "TargetConditionals.h"
 #endif
 
-// iOS, Android and Emscripten can use GL ES 3
-// Call ImGui_ImplOpenGL3_Init() with "#version 300 es"
-#if (defined(__APPLE__) && TARGET_OS_IOS) || (defined(__ANDROID__)) || (defined(__EMSCRIPTEN__))
-#define USE_GL_ES3
+// Auto-detect GL version
+#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3)
+#if (defined(__APPLE__) && TARGET_OS_IOS) || (defined(__ANDROID__))
+#define IMGUI_IMPL_OPENGL_ES3       // iOS, Android  -> GL ES 3, "#version 300 es"
+#elif defined(__EMSCRIPTEN__)
+#define IMGUI_IMPL_OPENGL_ES2       // Emscripten    -> GL ES 2, "#version 100"
+#endif
 #endif
 
-#ifdef USE_GL_ES3
-// OpenGL ES 3
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+#include <GLES2/gl2.h>
+#elif defined(IMGUI_IMPL_OPENGL_ES3)
 #include <GLES3/gl3.h>  // Use GL ES 3
 #else
-// Regular OpenGL
-// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually. 
-// Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad.
-// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
+// About Desktop OpenGL function loaders:
+//  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
+//  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
+//  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
-#include <GL/gl3w.h>
+#include <GL/gl3w.h>    // Needs to be initialized with gl3wInit() in user's code
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
-#include <GL/glew.h>
+#include <GL/glew.h>    // Needs to be initialized with glewInit() in user's code
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
-#include <glad/glad.h>
+#include <glad/glad.h>  // Needs to be initialized with gladLoadGL() in user's code
 #else
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
 #endif
 
+// Desktop GL has glDrawElementsBaseVertex() which GL ES and WebGL don't have.
+#if defined(IMGUI_IMPL_OPENGL_ES2) || defined(IMGUI_IMPL_OPENGL_ES3)
+#define IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX     0
+#else
+#define IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX     1
+#endif
+
 // OpenGL Data
 static char         g_GlslVersionString[32] = "";
 static GLuint       g_FontTexture = 0;
 static GLuint       g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
-static int          g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
-static int          g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
+static int          g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;                                // Uniforms location
+static int          g_AttribLocationVtxPos = 0, g_AttribLocationVtxUV = 0, g_AttribLocationVtxColor = 0; // Vertex attributes location
 static unsigned int g_VboHandle = 0, g_ElementsHandle = 0;
 
 // Functions
 bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
 {
+    // Setup back-end capabilities flags
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendRendererName = "imgui_impl_opengl3";
+#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+#endif
+
     // Store GLSL version string so we can refer to it later in case we recreate shaders. Note: GLSL version is NOT the same as GL version. Leave this to NULL if unsure.
-#ifdef USE_GL_ES3
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+    if (glsl_version == NULL)
+        glsl_version = "#version 100";
+#elif defined(IMGUI_IMPL_OPENGL_ES3)
     if (glsl_version == NULL)
         glsl_version = "#version 300 es";
 #else
@@ -110,6 +143,13 @@ bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
     IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(g_GlslVersionString));
     strcpy(g_GlslVersionString, glsl_version);
     strcat(g_GlslVersionString, "\n");
+
+    // Make a dummy GL call (we don't actually need the result)
+    // IF YOU GET A CRASH HERE: it probably means that you haven't initialized the OpenGL function loader used by this code.
+    // Desktop OpenGL 3/4 need a function loader. See the IMGUI_IMPL_OPENGL_LOADER_xxx explanation above.
+    GLint current_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
+
     return true;
 }
 
@@ -124,45 +164,8 @@ void    ImGui_ImplOpenGL3_NewFrame()
         ImGui_ImplOpenGL3_CreateDeviceObjects();
 }
 
-// OpenGL3 Render function.
-// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
-// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
-void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
+static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
 {
-    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    ImGuiIO& io = ImGui::GetIO();
-    int fb_width = (int)(draw_data->DisplaySize.x * io.DisplayFramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * io.DisplayFramebufferScale.y);
-    if (fb_width <= 0 || fb_height <= 0)
-        return;
-    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
-
-    // Backup GL state
-    GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
-    glActiveTexture(GL_TEXTURE0);
-    GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
-    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
-#ifdef GL_SAMPLER_BINDING
-    GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler);
-#endif
-    GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
-    GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
-#ifdef GL_POLYGON_MODE
-    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
-#endif
-    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
-    GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
-    GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
-    GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
-    GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
-    GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
-    GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
-    GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
-    GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
-    GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
-    GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
-    GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
-
     // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill
     glEnable(GL_BLEND);
     glBlendEquation(GL_FUNC_ADD);
@@ -175,7 +178,7 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 #endif
 
     // Setup viewport, orthographic projection matrix
-    // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
     glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
     float L = draw_data->DisplayPos.x;
     float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
@@ -194,57 +197,135 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 #ifdef GL_SAMPLER_BINDING
     glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 may set that otherwise.
 #endif
-    // Recreate the VAO every time
-    // (This is to easily allow multiple GL contexts. VAO are not shared among GL contexts, and we don't track creation/deletion of windows so we don't have an obvious key to use to cache them.)
-    GLuint vao_handle = 0;
-    glGenVertexArrays(1, &vao_handle);
-    glBindVertexArray(vao_handle);
-    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
-    glEnableVertexAttribArray(g_AttribLocationPosition);
-    glEnableVertexAttribArray(g_AttribLocationUV);
-    glEnableVertexAttribArray(g_AttribLocationColor);
-    glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
-    glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
-    glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
 
-    // Draw
-    ImVec2 pos = draw_data->DisplayPos;
+    (void)vertex_array_object;
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glBindVertexArray(vertex_array_object);
+#endif
+
+    // Bind vertex/index buffers and setup attributes for ImDrawVert
+    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+    glEnableVertexAttribArray(g_AttribLocationVtxPos);
+    glEnableVertexAttribArray(g_AttribLocationVtxUV);
+    glEnableVertexAttribArray(g_AttribLocationVtxColor);
+    glVertexAttribPointer(g_AttribLocationVtxPos,   2, GL_FLOAT,         GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, pos));
+    glVertexAttribPointer(g_AttribLocationVtxUV,    2, GL_FLOAT,         GL_FALSE, sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, uv));
+    glVertexAttribPointer(g_AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE,  sizeof(ImDrawVert), (GLvoid*)IM_OFFSETOF(ImDrawVert, col));
+}
+
+// OpenGL3 Render function.
+// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
+// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly, in order to be able to run within any OpenGL engine that doesn't do so.
+void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    if (fb_width <= 0 || fb_height <= 0)
+        return;
+
+    // Backup GL state
+    GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture);
+    glActiveTexture(GL_TEXTURE0);
+    GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+#ifdef GL_SAMPLER_BINDING
+    GLint last_sampler; glGetIntegerv(GL_SAMPLER_BINDING, &last_sampler);
+#endif
+    GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    GLint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array_object);
+#endif
+#ifdef GL_POLYGON_MODE
+    GLint last_polygon_mode[2]; glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode);
+#endif
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box);
+    GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb);
+    GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb);
+    GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha);
+    GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha);
+    GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb);
+    GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha);
+    GLboolean last_enable_blend = glIsEnabled(GL_BLEND);
+    GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE);
+    GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST);
+    GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST);
+    bool clip_origin_lower_left = true;
+#if defined(GL_CLIP_ORIGIN) && !defined(__APPLE__)
+    GLenum last_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)&last_clip_origin); // Support for GL 4.5's glClipControl(GL_UPPER_LEFT)
+    if (last_clip_origin == GL_UPPER_LEFT)
+        clip_origin_lower_left = false;
+#endif
+
+    // Setup desired GL state
+    // Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts)
+    // The renderer would actually work without any VAO bound, but then our VertexAttrib calls would overwrite the default one currently bound.
+    GLuint vertex_array_object = 0;
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glGenVertexArrays(1, &vertex_array_object);
+#endif
+    ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
+
+    // Will project scissor/clipping rectangles into framebuffer space
+    ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
+    ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
+
+    // Render command lists
     for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
         const ImDrawList* cmd_list = draw_data->CmdLists[n];
-        const ImDrawIdx* idx_buffer_offset = 0;
 
-        glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+        // Upload vertex/index buffers
         glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.Size * sizeof(ImDrawVert), (const GLvoid*)cmd_list->VtxBuffer.Data, GL_STREAM_DRAW);
-
-        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
         glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.Size * sizeof(ImDrawIdx), (const GLvoid*)cmd_list->IdxBuffer.Data, GL_STREAM_DRAW);
 
         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
         {
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
-            if (pcmd->UserCallback)
+            if (pcmd->UserCallback != NULL)
             {
-                // User callback (registered via ImDrawList::AddCallback)
-                pcmd->UserCallback(cmd_list, pcmd);
+                // User callback, registered via ImDrawList::AddCallback()
+                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
+                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                    ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
+                else
+                    pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                ImVec4 clip_rect = ImVec4(pcmd->ClipRect.x - pos.x, pcmd->ClipRect.y - pos.y, pcmd->ClipRect.z - pos.x, pcmd->ClipRect.w - pos.y);
+                // Project scissor/clipping rectangles into framebuffer space
+                ImVec4 clip_rect;
+                clip_rect.x = (pcmd->ClipRect.x - clip_off.x) * clip_scale.x;
+                clip_rect.y = (pcmd->ClipRect.y - clip_off.y) * clip_scale.y;
+                clip_rect.z = (pcmd->ClipRect.z - clip_off.x) * clip_scale.x;
+                clip_rect.w = (pcmd->ClipRect.w - clip_off.y) * clip_scale.y;
+
                 if (clip_rect.x < fb_width && clip_rect.y < fb_height && clip_rect.z >= 0.0f && clip_rect.w >= 0.0f)
                 {
                     // Apply scissor/clipping rectangle
-                    glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
+                    if (clip_origin_lower_left)
+                        glScissor((int)clip_rect.x, (int)(fb_height - clip_rect.w), (int)(clip_rect.z - clip_rect.x), (int)(clip_rect.w - clip_rect.y));
+                    else
+                        glScissor((int)clip_rect.x, (int)clip_rect.y, (int)clip_rect.z, (int)clip_rect.w); // Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT)
 
                     // Bind texture, Draw
                     glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
-                    glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
+#if IMGUI_IMPL_OPENGL_HAS_DRAW_WITH_BASE_VERTEX
+                    glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset);
+#else
+                    glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)));
+#endif
                 }
             }
-            idx_buffer_offset += pcmd->ElemCount;
         }
     }
-    glDeleteVertexArrays(1, &vao_handle);
+
+    // Destroy the temporary VAO
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glDeleteVertexArrays(1, &vertex_array_object);
+#endif
 
     // Restore modified GL state
     glUseProgram(last_program);
@@ -253,7 +334,9 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
     glBindSampler(0, last_sampler);
 #endif
     glActiveTexture(last_active_texture);
-    glBindVertexArray(last_vertex_array);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    glBindVertexArray(last_vertex_array_object);
+#endif
     glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
     glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
     glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha);
@@ -283,7 +366,9 @@ bool ImGui_ImplOpenGL3_CreateFontsTexture()
     glBindTexture(GL_TEXTURE_2D, g_FontTexture);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+#ifdef GL_UNPACK_ROW_LENGTH
     glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+#endif
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 
     // Store our identifier
@@ -306,49 +391,52 @@ void ImGui_ImplOpenGL3_DestroyFontsTexture()
     }
 }
 
-// If you get an error please report on github. You may try different GL context version or GLSL version.
+// If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file.
 static bool CheckShader(GLuint handle, const char* desc)
 {
     GLint status = 0, log_length = 0;
     glGetShaderiv(handle, GL_COMPILE_STATUS, &status);
     glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length);
-    if (status == GL_FALSE)
+    if ((GLboolean)status == GL_FALSE)
         fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s!\n", desc);
-    if (log_length > 0)
+    if (log_length > 1)
     {
         ImVector<char> buf;
         buf.resize((int)(log_length + 1));
         glGetShaderInfoLog(handle, log_length, NULL, (GLchar*)buf.begin());
         fprintf(stderr, "%s\n", buf.begin());
     }
-    return status == GL_TRUE;
+    return (GLboolean)status == GL_TRUE;
 }
 
-// If you get an error please report on github. You may try different GL context version or GLSL version.
+// If you get an error please report on GitHub. You may try different GL context version or GLSL version.
 static bool CheckProgram(GLuint handle, const char* desc)
 {
     GLint status = 0, log_length = 0;
     glGetProgramiv(handle, GL_LINK_STATUS, &status);
     glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length);
-    if (status == GL_FALSE)
-        fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s!\n", desc);
-    if (log_length > 0)
+    if ((GLboolean)status == GL_FALSE)
+        fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s! (with GLSL '%s')\n", desc, g_GlslVersionString);
+    if (log_length > 1)
     {
         ImVector<char> buf;
         buf.resize((int)(log_length + 1));
         glGetProgramInfoLog(handle, log_length, NULL, (GLchar*)buf.begin());
         fprintf(stderr, "%s\n", buf.begin());
     }
-    return status == GL_TRUE;
+    return (GLboolean)status == GL_TRUE;
 }
 
 bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
 {
     // Backup GL state
-    GLint last_texture, last_array_buffer, last_vertex_array;
+    GLint last_texture, last_array_buffer;
     glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
     glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+#ifndef IMGUI_IMPL_OPENGL_ES2
+    GLint last_vertex_array;
     glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+#endif
 
     // Parse GLSL version string
     int glsl_version = 130;
@@ -462,7 +550,7 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
         vertex_shader = vertex_shader_glsl_120;
         fragment_shader = fragment_shader_glsl_120;
     }
-    else if (glsl_version == 410)
+    else if (glsl_version >= 410)
     {
         vertex_shader = vertex_shader_glsl_410_core;
         fragment_shader = fragment_shader_glsl_410_core;
@@ -499,9 +587,9 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
 
     g_AttribLocationTex = glGetUniformLocation(g_ShaderHandle, "Texture");
     g_AttribLocationProjMtx = glGetUniformLocation(g_ShaderHandle, "ProjMtx");
-    g_AttribLocationPosition = glGetAttribLocation(g_ShaderHandle, "Position");
-    g_AttribLocationUV = glGetAttribLocation(g_ShaderHandle, "UV");
-    g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color");
+    g_AttribLocationVtxPos = glGetAttribLocation(g_ShaderHandle, "Position");
+    g_AttribLocationVtxUV = glGetAttribLocation(g_ShaderHandle, "UV");
+    g_AttribLocationVtxColor = glGetAttribLocation(g_ShaderHandle, "Color");
 
     // Create buffers
     glGenBuffers(1, &g_VboHandle);
@@ -512,7 +600,9 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
     // Restore modified GL state
     glBindTexture(GL_TEXTURE_2D, last_texture);
     glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+#ifndef IMGUI_IMPL_OPENGL_ES2
     glBindVertexArray(last_vertex_array);
+#endif
 
     return true;
 }

examples/imgui_impl_opengl3.h

@@ -1,25 +1,33 @@
-// ImGui Renderer for: OpenGL3 / OpenGL ES2 / OpenGL ES3 (modern OpenGL with shaders / programmatic pipeline)
+// dear imgui: Renderer for modern OpenGL with shaders / programmatic pipeline
+// - Desktop GL: 3.x 4.x
+// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
-// (Note: We are using GL3W as a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc..)
 
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID in imgui.cpp.
+//  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bits indices.
 
 // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
-// About OpenGL function loaders: 
-// About OpenGL function loaders: modern OpenGL doesn't have a standard header file and requires individual function pointers to be loaded manually. 
-// Helper libraries are often used for this purpose! Here we are supporting a few common ones: gl3w, glew, glad. 
-// You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
+// About Desktop OpenGL function loaders:
+//  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
+//  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
+//  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
 
 // About GLSL version:
-// The 'glsl_version' initialization parameter should be NULL (default) or a "#version XXX" string.
-// On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
-// Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
+//  The 'glsl_version' initialization parameter should be NULL (default) or a "#version XXX" string.
+//  On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
+//  Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
 
-// Set default OpenGL loader to be gl3w
+#pragma once
+
+// Specific OpenGL versions
+//#define IMGUI_IMPL_OPENGL_ES2     // Auto-detected on Emscripten
+//#define IMGUI_IMPL_OPENGL_ES3     // Auto-detected on iOS/Android
+
+// Set default OpenGL3 loader to be gl3w
 #if !defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)     \
  && !defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)     \
  && !defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)     \

examples/imgui_impl_osx.h

@@ -1,10 +1,12 @@
-// ImGui Platform Binding for: OSX / Cocoa
+// dear imgui: Platform Binding for OSX / Cocoa
 // This needs to be used along with a Renderer (e.g. OpenGL2, OpenGL3, Vulkan, Metal..)
-// [BETA] Beta bindings, not well tested. If you want a portable application, prefer using the Glfw or SDL platform bindings on Mac.
+// [ALPHA] Early bindings, not well tested. If you want a portable application, prefer using the GLFW or SDL platform bindings on Mac.
 
+// Implemented features:
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
+//  [X] Platform: OSX clipboard is supported within core Dear ImGui (no specific code in this back-end).
 // Issues:
-// [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..
-// [ ] Platform: Mouse cursor shapes and visibility are not supported (see end of https://github.com/glfw/glfw/issues/427)
+//  [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..
 
 @class NSEvent;
 @class NSView;

examples/imgui_impl_osx.mm

@@ -1,10 +1,12 @@
-// ImGui Platform Binding for: OSX / Cocoa
+// dear imgui: Platform Binding for OSX / Cocoa
 // This needs to be used along with a Renderer (e.g. OpenGL2, OpenGL3, Vulkan, Metal..)
-// [BETA] Beta bindings, not well tested. If you want a portable application, prefer using the Glfw or SDL platform bindings on Mac.
+// [ALPHA] Early bindings, not well tested. If you want a portable application, prefer using the GLFW or SDL platform bindings on Mac.
 
+// Implemented features:
+//  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
+//  [X] Platform: OSX clipboard is supported within core Dear ImGui (no specific code in this back-end).
 // Issues:
-// [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..
-// [ ] Platform: Mouse cursor shapes and visibility are not supported (see end of https://github.com/glfw/glfw/issues/427)
+//  [ ] Platform: Keys are all generally very broken. Best using [event keycode] and not [event characters]..
 
 #include "imgui.h"
 #include "imgui_impl_osx.h"
@@ -12,10 +14,24 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-28: Inputs: Added mouse cursor shape and visibility support.
+//  2019-05-18: Misc: Removed clipboard handlers as they are now supported by core imgui.cpp.
+//  2019-05-11: Inputs: Don't filter character values before calling AddInputCharacter() apart from 0xF700..0xFFFF range.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
 //  2018-07-07: Initial version.
 
 // Data
 static CFAbsoluteTime g_Time = 0.0;
+static NSCursor*      g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 };
+static bool           g_MouseCursorHidden = false;
+
+// Undocumented methods for creating cursors.
+@interface NSCursor()
++ (id)_windowResizeNorthWestSouthEastCursor;
++ (id)_windowResizeNorthEastSouthWestCursor;
++ (id)_windowResizeNorthSouthCursor;
++ (id)_windowResizeEastWestCursor;
+@end
 
 // Functions
 bool ImGui_ImplOSX_Init()
@@ -23,10 +39,11 @@ bool ImGui_ImplOSX_Init()
     ImGuiIO& io = ImGui::GetIO();
 
     // Setup back-end capabilities flags
-    //io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
+    io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
     //io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
     //io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports;    // We can create multi-viewports on the Platform side (optional)
     //io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can set io.MouseHoveredViewport correctly (optional, not easy)
+    io.BackendPlatformName = "imgui_impl_osx";
 
     // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
     const int offset_for_function_keys = 256 - 0xF700;
@@ -51,33 +68,21 @@ bool ImGui_ImplOSX_Init()
     io.KeyMap[ImGuiKey_X]           = 'X';
     io.KeyMap[ImGuiKey_Y]           = 'Y';
     io.KeyMap[ImGuiKey_Z]           = 'Z';
-    
-    io.SetClipboardTextFn = [](void*, const char* str) -> void
-    {
-        NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
-        [pasteboard declareTypes:[NSArray arrayWithObject:NSPasteboardTypeString] owner:nil];
-        [pasteboard setString:[NSString stringWithUTF8String:str] forType:NSPasteboardTypeString];
-    };
-    
-    io.GetClipboardTextFn = [](void*) -> const char*
-    {
-        NSPasteboard* pasteboard = [NSPasteboard generalPasteboard];
-        NSString* available = [pasteboard availableTypeFromArray: [NSArray arrayWithObject:NSPasteboardTypeString]];
-        if (![available isEqualToString:NSPasteboardTypeString])
-            return NULL;
 
-        NSString* string = [pasteboard stringForType:NSPasteboardTypeString];
-        if (string == nil)
-            return NULL;
-            
-        const char* string_c = (const char*)[string UTF8String];
-        size_t string_len = strlen(string_c);
-        static ImVector<char> s_clipboard;
-        s_clipboard.resize((int)string_len + 1);
-        strcpy(s_clipboard.Data, string_c);
-        return s_clipboard.Data;
-    };
-    
+    // Load cursors. Some of them are undocumented.
+    g_MouseCursorHidden = false;
+    g_MouseCursors[ImGuiMouseCursor_Arrow] = [NSCursor arrowCursor];
+    g_MouseCursors[ImGuiMouseCursor_TextInput] = [NSCursor IBeamCursor];
+    g_MouseCursors[ImGuiMouseCursor_ResizeAll] = [NSCursor closedHandCursor];
+    g_MouseCursors[ImGuiMouseCursor_Hand] = [NSCursor pointingHandCursor];
+    g_MouseCursors[ImGuiMouseCursor_ResizeNS] = [NSCursor respondsToSelector:@selector(_windowResizeNorthSouthCursor)] ? [NSCursor _windowResizeNorthSouthCursor] : [NSCursor resizeUpDownCursor];
+    g_MouseCursors[ImGuiMouseCursor_ResizeEW] = [NSCursor respondsToSelector:@selector(_windowResizeEastWestCursor)] ? [NSCursor _windowResizeEastWestCursor] : [NSCursor resizeLeftRightCursor];
+    g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = [NSCursor respondsToSelector:@selector(_windowResizeNorthEastSouthWestCursor)] ? [NSCursor _windowResizeNorthEastSouthWestCursor] : [NSCursor closedHandCursor];
+    g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = [NSCursor respondsToSelector:@selector(_windowResizeNorthWestSouthEastCursor)] ? [NSCursor _windowResizeNorthWestSouthEastCursor] : [NSCursor closedHandCursor];
+
+    // We don't set the io.SetClipboardTextFn/io.GetClipboardTextFn handlers,
+    // because imgui.cpp has a default for them that works with OSX.
+
     return true;
 }
 
@@ -85,6 +90,34 @@ void ImGui_ImplOSX_Shutdown()
 {
 }
 
+static void ImGui_ImplOSX_UpdateMouseCursor()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if (io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange)
+        return;
+
+    ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor();
+    if (io.MouseDrawCursor || imgui_cursor == ImGuiMouseCursor_None)
+    {
+        // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor
+        if (!g_MouseCursorHidden)
+        {
+            g_MouseCursorHidden = true;
+            [NSCursor hide];
+        }
+    }
+    else
+    {
+        // Show OS mouse cursor
+        [g_MouseCursors[g_MouseCursors[imgui_cursor] ? imgui_cursor : ImGuiMouseCursor_Arrow] set];
+        if (g_MouseCursorHidden)
+        {
+            g_MouseCursorHidden = false;
+            [NSCursor unhide];
+        }
+    }
+}
+
 void ImGui_ImplOSX_NewFrame(NSView* view)
 {
     // Setup display size
@@ -99,6 +132,8 @@ void ImGui_ImplOSX_NewFrame(NSView* view)
     CFAbsoluteTime current_time = CFAbsoluteTimeGetCurrent();
     io.DeltaTime = current_time - g_Time;
     g_Time = current_time;
+
+    ImGui_ImplOSX_UpdateMouseCursor();
 }
 
 static int mapCharacterToKey(int c)
@@ -187,8 +222,8 @@ bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view)
         for (int i = 0; i < len; i++)
         {
             int c = [str characterAtIndex:i];
-            if (c < 0xF700 && !io.KeyCtrl)
-                io.AddInputCharacter(c);
+            if (!io.KeyCtrl && !(c >= 0xF700 && c <= 0xFFFF))
+                io.AddInputCharacter((unsigned int)c);
 
             // We must reset in case we're pressing a sequence of special keys while keeping the command pressed
             int key = mapCharacterToKey(c);
@@ -233,6 +268,6 @@ bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view)
             resetKeys();
         return io.WantCaptureKeyboard;
     }
-    
+
     return false;
 }

examples/imgui_impl_sdl.cpp

@@ -1,11 +1,13 @@
-// ImGui Platform Binding for: SDL2
+// dear imgui: Platform Binding for SDL2
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 // (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
+// (Requires: SDL 2.0. Prefer SDL 2.0.4+ for full feature support.)
 
 // Implemented features:
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 //  [X] Platform: Clipboard support.
 //  [X] Platform: Keyboard arrays indexed using SDL_SCANCODE_* codes, e.g. ImGui::IsKeyPressed(SDL_SCANCODE_SPACE).
+//  [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 // Missing features:
 //  [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
 
@@ -15,17 +17,22 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-04-23: Inputs: Added support for SDL_GameController (if ImGuiConfigFlags_NavEnableGamepad is set by user application).
+//  2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized.
+//  2018-12-21: Inputs: Workaround for Android/iOS which don't seem to handle focus related calls.
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
+//  2018-11-14: Changed the signature of ImGui_ImplSDL2_ProcessEvent() to take a 'const SDL_Event*'.
 //  2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls.
 //  2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
 //  2018-06-08: Misc: Extracted imgui_impl_sdl.cpp/.h away from the old combined SDL2+OpenGL/Vulkan examples.
-//  2018-06-08: Misc: ImGui_ImplSDL2_InitForOpenGL() now takes a SDL_GLContext parameter. 
+//  2018-06-08: Misc: ImGui_ImplSDL2_InitForOpenGL() now takes a SDL_GLContext parameter.
 //  2018-05-09: Misc: Fixed clipboard paste memory leak (we didn't call SDL_FreeMemory on the data returned by SDL_GetClipboardText).
 //  2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag.
 //  2018-02-16: Inputs: Added support for mouse cursors, honoring ImGui::GetMouseCursor() value.
 //  2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves.
 //  2018-02-06: Inputs: Added mapping for ImGuiKey_Space.
 //  2018-02-05: Misc: Using SDL_GetPerformanceCounter() instead of SDL_GetTicks() to be able to handle very high framerate (1000+ FPS).
-//  2018-02-05: Inputs: Keyboard mapping is using scancodes everywhere instead of a confusing mixture of keycodes and scancodes. 
+//  2018-02-05: Inputs: Keyboard mapping is using scancodes everywhere instead of a confusing mixture of keycodes and scancodes.
 //  2018-01-20: Inputs: Added Horizontal Mouse Wheel support.
 //  2018-01-19: Inputs: When available (SDL 2.0.4+) using SDL_CaptureMouse() to retrieve coordinates outside of client area when dragging. Otherwise (SDL 2.0.3 and before) testing for SDL_WINDOW_INPUT_FOCUS instead of SDL_WINDOW_MOUSE_FOCUS.
 //  2018-01-18: Inputs: Added mapping for ImGuiKey_Insert.
@@ -36,17 +43,15 @@
 #include "imgui_impl_sdl.h"
 
 // SDL
-// (the multi-viewports feature requires SDL features supported from SDL 2.0.5+)
 #include <SDL.h>
 #include <SDL_syswm.h>
-
-#define SDL_HAS_CAPTURE_MOUSE               SDL_VERSION_ATLEAST(2,0,4)
-#define SDL_HAS_VULKAN                      SDL_VERSION_ATLEAST(2,0,6)
-#define SDL_HAS_MOUSE_FOCUS_CLICKTHROUGH    SDL_VERSION_ATLEAST(2,0,5)
-#if !SDL_HAS_VULKAN
-static const Uint32 SDL_WINDOW_VULKAN = 0x10000000;
+#if defined(__APPLE__)
+#include "TargetConditionals.h"
 #endif
 
+#define SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE    SDL_VERSION_ATLEAST(2,0,4)
+#define SDL_HAS_VULKAN                      SDL_VERSION_ATLEAST(2,0,6)
+
 // Data
 static SDL_Window*  g_Window = NULL;
 static Uint64       g_Time = 0;
@@ -71,7 +76,8 @@ static void ImGui_ImplSDL2_SetClipboardText(void*, const char* text)
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-bool ImGui_ImplSDL2_ProcessEvent(SDL_Event* event)
+// If you have multiple SDL events and some of them are not meant to be used by dear imgui, you may need to filter events based on their windowID field.
+bool ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event)
 {
     ImGuiIO& io = ImGui::GetIO();
     switch (event->type)
@@ -112,7 +118,7 @@ bool ImGui_ImplSDL2_ProcessEvent(SDL_Event* event)
     return false;
 }
 
-static bool    ImGui_ImplSDL2_Init(SDL_Window* window)
+static bool ImGui_ImplSDL2_Init(SDL_Window* window)
 {
     g_Window = window;
 
@@ -120,6 +126,7 @@ static bool    ImGui_ImplSDL2_Init(SDL_Window* window)
     ImGuiIO& io = ImGui::GetIO();
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;       // We can honor GetMouseCursor() values (optional)
     io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;        // We can honor io.WantSetMousePos requests (optional, rarely used)
+    io.BackendPlatformName = "imgui_impl_sdl";
 
     // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.
     io.KeyMap[ImGuiKey_Tab] = SDL_SCANCODE_TAB;
@@ -177,9 +184,9 @@ bool ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* sdl_gl_context)
 
 bool ImGui_ImplSDL2_InitForVulkan(SDL_Window* window)
 {
-    #if !SDL_HAS_VULKAN
+#if !SDL_HAS_VULKAN
     IM_ASSERT(0 && "Unsupported");
-    #endif
+#endif
     return ImGui_ImplSDL2_Init(window);
 }
 
@@ -215,7 +222,7 @@ static void ImGui_ImplSDL2_UpdateMousePosAndButtons()
     io.MouseDown[2] = g_MousePressed[2] || (mouse_buttons & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0;
     g_MousePressed[0] = g_MousePressed[1] = g_MousePressed[2] = false;
 
-#if SDL_HAS_CAPTURE_MOUSE && !defined(__EMSCRIPTEN__)
+#if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__) && !(defined(__APPLE__) && TARGET_OS_IOS)
     SDL_Window* focused_window = SDL_GetKeyboardFocus();
     if (g_Window == focused_window)
     {
@@ -229,7 +236,7 @@ static void ImGui_ImplSDL2_UpdateMousePosAndButtons()
         io.MousePos = ImVec2((float)mx, (float)my);
     }
 
-    // SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger the OS window resize cursor. 
+    // SDL_CaptureMouse() let the OS know e.g. that our imgui drag outside the SDL window boundaries shouldn't e.g. trigger the OS window resize cursor.
     // The function is only supported from SDL 2.0.4 (released Jan 2016)
     bool any_mouse_button_down = ImGui::IsAnyMouseDown();
     SDL_CaptureMouse(any_mouse_button_down ? SDL_TRUE : SDL_FALSE);
@@ -259,10 +266,51 @@ static void ImGui_ImplSDL2_UpdateMouseCursor()
     }
 }
 
+static void ImGui_ImplSDL2_UpdateGamepads()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    memset(io.NavInputs, 0, sizeof(io.NavInputs));
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
+
+    // Get gamepad
+    SDL_GameController* game_controller = SDL_GameControllerOpen(0);
+    if (!game_controller)
+    {
+        io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
+        return;
+    }
+
+    // Update gamepad inputs
+    #define MAP_BUTTON(NAV_NO, BUTTON_NO)       { io.NavInputs[NAV_NO] = (SDL_GameControllerGetButton(game_controller, BUTTON_NO) != 0) ? 1.0f : 0.0f; }
+    #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float vn = (float)(SDL_GameControllerGetAxis(game_controller, AXIS_NO) - V0) / (float)(V1 - V0); if (vn > 1.0f) vn = 1.0f; if (vn > 0.0f && io.NavInputs[NAV_NO] < vn) io.NavInputs[NAV_NO] = vn; }
+    const int thumb_dead_zone = 8000;           // SDL_gamecontroller.h suggests using this value.
+    MAP_BUTTON(ImGuiNavInput_Activate,      SDL_CONTROLLER_BUTTON_A);               // Cross / A
+    MAP_BUTTON(ImGuiNavInput_Cancel,        SDL_CONTROLLER_BUTTON_B);               // Circle / B
+    MAP_BUTTON(ImGuiNavInput_Menu,          SDL_CONTROLLER_BUTTON_X);               // Square / X
+    MAP_BUTTON(ImGuiNavInput_Input,         SDL_CONTROLLER_BUTTON_Y);               // Triangle / Y
+    MAP_BUTTON(ImGuiNavInput_DpadLeft,      SDL_CONTROLLER_BUTTON_DPAD_LEFT);       // D-Pad Left
+    MAP_BUTTON(ImGuiNavInput_DpadRight,     SDL_CONTROLLER_BUTTON_DPAD_RIGHT);      // D-Pad Right
+    MAP_BUTTON(ImGuiNavInput_DpadUp,        SDL_CONTROLLER_BUTTON_DPAD_UP);         // D-Pad Up
+    MAP_BUTTON(ImGuiNavInput_DpadDown,      SDL_CONTROLLER_BUTTON_DPAD_DOWN);       // D-Pad Down
+    MAP_BUTTON(ImGuiNavInput_FocusPrev,     SDL_CONTROLLER_BUTTON_LEFTSHOULDER);    // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_FocusNext,     SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);   // R1 / RB
+    MAP_BUTTON(ImGuiNavInput_TweakSlow,     SDL_CONTROLLER_BUTTON_LEFTSHOULDER);    // L1 / LB
+    MAP_BUTTON(ImGuiNavInput_TweakFast,     SDL_CONTROLLER_BUTTON_RIGHTSHOULDER);   // R1 / RB
+    MAP_ANALOG(ImGuiNavInput_LStickLeft,    SDL_CONTROLLER_AXIS_LEFTX, -thumb_dead_zone, -32768);
+    MAP_ANALOG(ImGuiNavInput_LStickRight,   SDL_CONTROLLER_AXIS_LEFTX, +thumb_dead_zone, +32767);
+    MAP_ANALOG(ImGuiNavInput_LStickUp,      SDL_CONTROLLER_AXIS_LEFTY, -thumb_dead_zone, -32767);
+    MAP_ANALOG(ImGuiNavInput_LStickDown,    SDL_CONTROLLER_AXIS_LEFTY, +thumb_dead_zone, +32767);
+
+    io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
+    #undef MAP_BUTTON
+    #undef MAP_ANALOG
+}
+
 void ImGui_ImplSDL2_NewFrame(SDL_Window* window)
 {
     ImGuiIO& io = ImGui::GetIO();
-    IM_ASSERT(io.Fonts->IsBuilt());     // Font atlas needs to be built, call renderer _NewFrame() function e.g. ImGui_ImplOpenGL3_NewFrame() 
+    IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
 
     // Setup display size (every frame to accommodate for window resizing)
     int w, h;
@@ -270,7 +318,8 @@ void ImGui_ImplSDL2_NewFrame(SDL_Window* window)
     SDL_GetWindowSize(window, &w, &h);
     SDL_GL_GetDrawableSize(window, &display_w, &display_h);
     io.DisplaySize = ImVec2((float)w, (float)h);
-    io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0);
+    if (w > 0 && h > 0)
+        io.DisplayFramebufferScale = ImVec2((float)display_w / w, (float)display_h / h);
 
     // Setup time step (we don't use SDL_GetTicks() because it is using millisecond resolution)
     static Uint64 frequency = SDL_GetPerformanceFrequency();
@@ -280,4 +329,7 @@ void ImGui_ImplSDL2_NewFrame(SDL_Window* window)
 
     ImGui_ImplSDL2_UpdateMousePosAndButtons();
     ImGui_ImplSDL2_UpdateMouseCursor();
+
+    // Update game controllers (if enabled and available)
+    ImGui_ImplSDL2_UpdateGamepads();
 }

examples/imgui_impl_sdl.h

@@ -1,4 +1,4 @@
-// ImGui Platform Binding for: SDL2
+// dear imgui: Platform Binding for SDL2
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 // (Info: SDL2 is a cross-platform general purpose library for handling windows, inputs, graphics context creation, etc.)
 
@@ -6,6 +6,7 @@
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 //  [X] Platform: Clipboard support.
 //  [X] Platform: Keyboard arrays indexed using SDL_SCANCODE_* codes, e.g. ImGui::IsKeyPressed(SDL_SCANCODE_SPACE).
+//  [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 // Missing features:
 //  [ ] Platform: SDL2 handling of IME under Windows appears to be broken and it explicitly disable the regular Windows IME. You can restore Windows IME by compiling SDL with SDL_DISABLE_WINDOWS_IME.
 
@@ -13,6 +14,8 @@
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
+#pragma once
+
 struct SDL_Window;
 typedef union SDL_Event SDL_Event;
 
@@ -20,4 +23,4 @@ IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForOpenGL(SDL_Window* window, void* s
 IMGUI_IMPL_API bool     ImGui_ImplSDL2_InitForVulkan(SDL_Window* window);
 IMGUI_IMPL_API void     ImGui_ImplSDL2_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplSDL2_NewFrame(SDL_Window* window);
-IMGUI_IMPL_API bool     ImGui_ImplSDL2_ProcessEvent(SDL_Event* event);
+IMGUI_IMPL_API bool     ImGui_ImplSDL2_ProcessEvent(const SDL_Event* event);

examples/imgui_impl_vulkan.h

@@ -1,6 +1,8 @@
-// ImGui Renderer for: Vulkan
+// dear imgui: Renderer for Vulkan
 // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
 
+// Implemented features:
+//  [X] Renderer: Support for large meshes (64k+ vertices) with 16-bits indices.
 // Missing features:
 //  [ ] Renderer: User texture binding. Changes of ImTextureID aren't supported by this binding! See https://github.com/ocornut/imgui/pull/914
 
@@ -8,25 +10,35 @@
 // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
-// The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification. 
+// The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
 
+// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
+// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
+//   You will use those if you want to use this rendering back-end in your engine/app.
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by 
+//   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
+// Read comments in imgui_impl_vulkan.h.
+
+#pragma once
+
 #include <vulkan/vulkan.h>
 
-#define IMGUI_VK_QUEUED_FRAMES      2
-
-// Please zero-clear before use.
+// Initialization data, for ImGui_ImplVulkan_Init()
+// [Please zero-clear before use!]
 struct ImGui_ImplVulkan_InitInfo
 {
-    VkInstance                      Instance;
-    VkPhysicalDevice                PhysicalDevice;
-    VkDevice                        Device;
-    uint32_t                        QueueFamily;
-    VkQueue                         Queue;
-    VkPipelineCache                 PipelineCache;
-    VkDescriptorPool                DescriptorPool;
-    const VkAllocationCallbacks*    Allocator;
-    void                            (*CheckVkResultFn)(VkResult err);
+    VkInstance          Instance;
+    VkPhysicalDevice    PhysicalDevice;
+    VkDevice            Device;
+    uint32_t            QueueFamily;
+    VkQueue             Queue;
+    VkPipelineCache     PipelineCache;
+    VkDescriptorPool    DescriptorPool;
+    uint32_t            MinImageCount;          // >= 2
+    uint32_t            ImageCount;             // >= MinImageCount
+    const VkAllocationCallbacks* Allocator;
+    void                (*CheckVkResultFn)(VkResult err);
 };
 
 // Called by user code
@@ -35,52 +47,58 @@ IMGUI_IMPL_API void     ImGui_ImplVulkan_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplVulkan_NewFrame();
 IMGUI_IMPL_API void     ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer);
 IMGUI_IMPL_API bool     ImGui_ImplVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
-IMGUI_IMPL_API void     ImGui_ImplVulkan_InvalidateFontUploadObjects();
-
-// Called by ImGui_ImplVulkan_Init() might be useful elsewhere.
-IMGUI_IMPL_API bool     ImGui_ImplVulkan_CreateDeviceObjects();
-IMGUI_IMPL_API void     ImGui_ImplVulkan_InvalidateDeviceObjects();
+IMGUI_IMPL_API void     ImGui_ImplVulkan_DestroyFontUploadObjects();
+IMGUI_IMPL_API void     ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count); // To override MinImageCount after initialization (e.g. if swap chain is recreated)
 
 
 //-------------------------------------------------------------------------
 // Internal / Miscellaneous Vulkan Helpers
+// (Used by example's main.cpp. Used by multi-viewport features. PROBABLY NOT used by your own engine/app.)
 //-------------------------------------------------------------------------
-// You probably do NOT need to use or care about those functions. 
+// You probably do NOT need to use or care about those functions.
 // Those functions only exist because:
 //   1) they facilitate the readability and maintenance of the multiple main.cpp examples files.
 //   2) the upcoming multi-viewport feature will need them internally.
-// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings, 
+// Generally we avoid exposing any kind of superfluous high-level helpers in the bindings,
 // but it is too much code to duplicate everywhere so we exceptionally expose them.
-// Your application/engine will likely already have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
+//
+// Your engine/app will likely _already_ have code to setup all that stuff (swap chain, render pass, frame buffers, etc.).
 // You may read this code to learn about Vulkan, but it is recommended you use you own custom tailored code to do equivalent work.
-// (those functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
+// (The ImGui_ImplVulkanH_XXX functions do not interact with any of the state used by the regular ImGui_ImplVulkan_XXX functions)
 //-------------------------------------------------------------------------
 
-struct ImGui_ImplVulkanH_FrameData;
-struct ImGui_ImplVulkanH_WindowData;
+struct ImGui_ImplVulkanH_Frame;
+struct ImGui_ImplVulkanH_Window;
 
-IMGUI_IMPL_API void                 ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(VkPhysicalDevice physical_device, VkDevice device, uint32_t queue_family, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator);
-IMGUI_IMPL_API void                 ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator, int w, int h);
-IMGUI_IMPL_API void                 ImGui_ImplVulkanH_DestroyWindowData(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_WindowData* wd, const VkAllocationCallbacks* allocator);
+// Helpers
+IMGUI_IMPL_API void                 ImGui_ImplVulkanH_CreateWindow(VkInstance instance, VkPhysicalDevice physical_device, VkDevice device, ImGui_ImplVulkanH_Window* wnd, uint32_t queue_family, const VkAllocationCallbacks* allocator, int w, int h, uint32_t min_image_count);
+IMGUI_IMPL_API void                 ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_Window* wnd, const VkAllocationCallbacks* allocator);
 IMGUI_IMPL_API VkSurfaceFormatKHR   ImGui_ImplVulkanH_SelectSurfaceFormat(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkFormat* request_formats, int request_formats_count, VkColorSpaceKHR request_color_space);
 IMGUI_IMPL_API VkPresentModeKHR     ImGui_ImplVulkanH_SelectPresentMode(VkPhysicalDevice physical_device, VkSurfaceKHR surface, const VkPresentModeKHR* request_modes, int request_modes_count);
 IMGUI_IMPL_API int                  ImGui_ImplVulkanH_GetMinImageCountFromPresentMode(VkPresentModeKHR present_mode);
 
 // Helper structure to hold the data needed by one rendering frame
-struct ImGui_ImplVulkanH_FrameData
+// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
+// [Please zero-clear before use!]
+struct ImGui_ImplVulkanH_Frame
 {
-    uint32_t            BackbufferIndex;        // Keep track of recently rendered swapchain frame indices
     VkCommandPool       CommandPool;
     VkCommandBuffer     CommandBuffer;
     VkFence             Fence;
+    VkImage             Backbuffer;
+    VkImageView         BackbufferView;
+    VkFramebuffer       Framebuffer;
+};
+
+struct ImGui_ImplVulkanH_FrameSemaphores
+{
     VkSemaphore         ImageAcquiredSemaphore;
     VkSemaphore         RenderCompleteSemaphore;
-
-    IMGUI_IMPL_API ImGui_ImplVulkanH_FrameData();
 };
 
 // Helper structure to hold the data needed by one rendering context into one OS window
-struct ImGui_ImplVulkanH_WindowData
+// (Used by example's main.cpp. Used by multi-viewport features. Probably NOT used by your own engine/app.)
+struct ImGui_ImplVulkanH_Window
 {
     int                 Width;
     int                 Height;
@@ -91,13 +109,17 @@ struct ImGui_ImplVulkanH_WindowData
     VkRenderPass        RenderPass;
     bool                ClearEnable;
     VkClearValue        ClearValue;
-    uint32_t            BackBufferCount;
-    VkImage             BackBuffer[16];
-    VkImageView         BackBufferView[16];
-    VkFramebuffer       Framebuffer[16];
-    uint32_t            FrameIndex;
-    ImGui_ImplVulkanH_FrameData Frames[IMGUI_VK_QUEUED_FRAMES];
+    uint32_t            FrameIndex;             // Current frame being rendered to (0 <= FrameIndex < FrameInFlightCount)
+    uint32_t            ImageCount;             // Number of simultaneous in-flight frames (returned by vkGetSwapchainImagesKHR, usually derived from min_image_count)
+    uint32_t            SemaphoreIndex;         // Current set of swapchain wait semaphores we're using (needs to be distinct from per frame data)
+    ImGui_ImplVulkanH_Frame*            Frames;
+    ImGui_ImplVulkanH_FrameSemaphores*  FrameSemaphores;
 
-    IMGUI_IMPL_API ImGui_ImplVulkanH_WindowData();
+    ImGui_ImplVulkanH_Window() 
+    { 
+        memset(this, 0, sizeof(*this)); 
+        PresentMode = VK_PRESENT_MODE_MAX_ENUM_KHR;
+        ClearEnable = true;
+    }
 };
 

examples/imgui_impl_win32.cpp

@@ -1,10 +1,11 @@
-// ImGui Platform Binding for: Windows (standard windows API for 32 and 64 bits applications)
+// dear imgui: Platform Binding for Windows (standard windows API for 32 and 64 bits applications)
 // This needs to be used along with a Renderer (e.g. DirectX11, OpenGL3, Vulkan..)
 
 // Implemented features:
 //  [X] Platform: Clipboard support (for Win32 this is actually part of core imgui)
 //  [X] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 //  [X] Platform: Keyboard arrays indexed using VK_* Virtual Key Codes, e.g. ImGui::IsKeyPressed(VK_SPACE).
+//  [X] Platform: Gamepad support. Enabled with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'.
 
 #include "imgui.h"
 #include "imgui_impl_win32.h"
@@ -12,10 +13,16 @@
 #define WIN32_LEAN_AND_MEAN
 #endif
 #include <windows.h>
+#include <XInput.h>
 #include <tchar.h>
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2019-05-11: Inputs: Don't filter value from WM_CHAR before calling AddInputCharacter().
+//  2019-01-17: Misc: Using GetForegroundWindow()+IsChild() instead of GetActiveWindow() to be compatible with windows created in a different thread or parent.
+//  2019-01-17: Inputs: Added support for mouse buttons 4 and 5 via WM_XBUTTON* messages.
+//  2019-01-15: Inputs: Added support for XInput gamepads (if ImGuiConfigFlags_NavEnableGamepad is set by user application).
+//  2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window.
 //  2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor.
 //  2018-06-10: Inputs: Fixed handling of mouse wheel messages to support fine position messages (typically sent by track-pads).
 //  2018-06-08: Misc: Extracted imgui_impl_win32.cpp/.h away from the old combined DX9/DX10/DX11/DX12 examples.
@@ -28,7 +35,7 @@
 //  2018-01-08: Inputs: Added mapping for ImGuiKey_Insert.
 //  2018-01-05: Inputs: Added WM_LBUTTONDBLCLK double-click handlers for window classes with the CS_DBLCLKS flag.
 //  2017-10-23: Inputs: Added WM_SYSKEYDOWN / WM_SYSKEYUP handlers so e.g. the VK_MENU key can be read.
-//  2017-10-23: Inputs: Using Win32 ::SetCapture/::GetCapture() to retrieve mouse positions outside the client area when dragging. 
+//  2017-10-23: Inputs: Using Win32 ::SetCapture/::GetCapture() to retrieve mouse positions outside the client area when dragging.
 //  2016-11-12: Inputs: Only call Win32 ::SetCursor(NULL) when io.MouseDrawCursor is set.
 
 // Win32 Data
@@ -36,6 +43,8 @@ static HWND                 g_hWnd = 0;
 static INT64                g_Time = 0;
 static INT64                g_TicksPerSecond = 0;
 static ImGuiMouseCursor     g_LastMouseCursor = ImGuiMouseCursor_COUNT;
+static bool                 g_HasGamepad = false;
+static bool                 g_WantUpdateHasGamepad = true;
 
 // Functions
 bool    ImGui_ImplWin32_Init(void* hwnd)
@@ -50,6 +59,7 @@ bool    ImGui_ImplWin32_Init(void* hwnd)
     ImGuiIO& io = ImGui::GetIO();
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
     io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
+    io.BackendPlatformName = "imgui_impl_win32";
     io.ImeWindowHandle = hwnd;
 
     // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array that we will update during the application lifetime.
@@ -130,14 +140,67 @@ static void ImGui_ImplWin32_UpdateMousePos()
     // Set mouse position
     io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
     POINT pos;
-    if (::GetActiveWindow() == g_hWnd && ::GetCursorPos(&pos))
-        if (::ScreenToClient(g_hWnd, &pos))
-            io.MousePos = ImVec2((float)pos.x, (float)pos.y);
+    if (HWND active_window = ::GetForegroundWindow())
+        if (active_window == g_hWnd || ::IsChild(active_window, g_hWnd))
+            if (::GetCursorPos(&pos) && ::ScreenToClient(g_hWnd, &pos))
+                io.MousePos = ImVec2((float)pos.x, (float)pos.y);
+}
+
+#ifdef _MSC_VER
+#pragma comment(lib, "xinput")
+#endif
+
+// Gamepad navigation mapping
+static void ImGui_ImplWin32_UpdateGamepads()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    memset(io.NavInputs, 0, sizeof(io.NavInputs));
+    if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0)
+        return;
+
+    // Calling XInputGetState() every frame on disconnected gamepads is unfortunately too slow.
+    // Instead we refresh gamepad availability by calling XInputGetCapabilities() _only_ after receiving WM_DEVICECHANGE.
+    if (g_WantUpdateHasGamepad)
+    {
+        XINPUT_CAPABILITIES caps;
+        g_HasGamepad = (XInputGetCapabilities(0, XINPUT_FLAG_GAMEPAD, &caps) == ERROR_SUCCESS);
+        g_WantUpdateHasGamepad = false;
+    }
+
+    XINPUT_STATE xinput_state;
+    io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad;
+    if (g_HasGamepad && XInputGetState(0, &xinput_state) == ERROR_SUCCESS)
+    {
+        const XINPUT_GAMEPAD& gamepad = xinput_state.Gamepad;
+        io.BackendFlags |= ImGuiBackendFlags_HasGamepad;
+
+        #define MAP_BUTTON(NAV_NO, BUTTON_ENUM)     { io.NavInputs[NAV_NO] = (gamepad.wButtons & BUTTON_ENUM) ? 1.0f : 0.0f; }
+        #define MAP_ANALOG(NAV_NO, VALUE, V0, V1)   { float vn = (float)(VALUE - V0) / (float)(V1 - V0); if (vn > 1.0f) vn = 1.0f; if (vn > 0.0f && io.NavInputs[NAV_NO] < vn) io.NavInputs[NAV_NO] = vn; }
+        MAP_BUTTON(ImGuiNavInput_Activate,      XINPUT_GAMEPAD_A);              // Cross / A
+        MAP_BUTTON(ImGuiNavInput_Cancel,        XINPUT_GAMEPAD_B);              // Circle / B
+        MAP_BUTTON(ImGuiNavInput_Menu,          XINPUT_GAMEPAD_X);              // Square / X
+        MAP_BUTTON(ImGuiNavInput_Input,         XINPUT_GAMEPAD_Y);              // Triangle / Y
+        MAP_BUTTON(ImGuiNavInput_DpadLeft,      XINPUT_GAMEPAD_DPAD_LEFT);      // D-Pad Left
+        MAP_BUTTON(ImGuiNavInput_DpadRight,     XINPUT_GAMEPAD_DPAD_RIGHT);     // D-Pad Right
+        MAP_BUTTON(ImGuiNavInput_DpadUp,        XINPUT_GAMEPAD_DPAD_UP);        // D-Pad Up
+        MAP_BUTTON(ImGuiNavInput_DpadDown,      XINPUT_GAMEPAD_DPAD_DOWN);      // D-Pad Down
+        MAP_BUTTON(ImGuiNavInput_FocusPrev,     XINPUT_GAMEPAD_LEFT_SHOULDER);  // L1 / LB
+        MAP_BUTTON(ImGuiNavInput_FocusNext,     XINPUT_GAMEPAD_RIGHT_SHOULDER); // R1 / RB
+        MAP_BUTTON(ImGuiNavInput_TweakSlow,     XINPUT_GAMEPAD_LEFT_SHOULDER);  // L1 / LB
+        MAP_BUTTON(ImGuiNavInput_TweakFast,     XINPUT_GAMEPAD_RIGHT_SHOULDER); // R1 / RB
+        MAP_ANALOG(ImGuiNavInput_LStickLeft,    gamepad.sThumbLX,  -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32768);
+        MAP_ANALOG(ImGuiNavInput_LStickRight,   gamepad.sThumbLX,  +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
+        MAP_ANALOG(ImGuiNavInput_LStickUp,      gamepad.sThumbLY,  +XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, +32767);
+        MAP_ANALOG(ImGuiNavInput_LStickDown,    gamepad.sThumbLY,  -XINPUT_GAMEPAD_LEFT_THUMB_DEADZONE, -32767);
+        #undef MAP_BUTTON
+        #undef MAP_ANALOG
+    }
 }
 
 void    ImGui_ImplWin32_NewFrame()
 {
     ImGuiIO& io = ImGui::GetIO();
+    IM_ASSERT(io.Fonts->IsBuilt() && "Font atlas not built! It is generally built by the renderer back-end. Missing call to renderer _NewFrame() function? e.g. ImGui_ImplOpenGL3_NewFrame().");
 
     // Setup display size (every frame to accommodate for window resizing)
     RECT rect;
@@ -167,19 +230,25 @@ void    ImGui_ImplWin32_NewFrame()
         g_LastMouseCursor = mouse_cursor;
         ImGui_ImplWin32_UpdateMouseCursor();
     }
+
+    // Update game controllers (if enabled and available)
+    ImGui_ImplWin32_UpdateGamepads();
 }
 
 // Allow compilation with old Windows SDK. MinGW doesn't have default _WIN32_WINNT/WINVER versions.
 #ifndef WM_MOUSEHWHEEL
 #define WM_MOUSEHWHEEL 0x020E
 #endif
+#ifndef DBT_DEVNODES_CHANGED
+#define DBT_DEVNODES_CHANGED 0x0007
+#endif
 
-// Process Win32 mouse/keyboard inputs. 
+// Process Win32 mouse/keyboard inputs.
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
-// PS: In this Win32 handler, we use the capture API (GetCapture/SetCapture/ReleaseCapture) to be able to read mouse coordinations when dragging mouse outside of our window bounds.
+// PS: In this Win32 handler, we use the capture API (GetCapture/SetCapture/ReleaseCapture) to be able to read mouse coordinates when dragging mouse outside of our window bounds.
 // PS: We treat DBLCLK messages as regular mouse down messages, so this code will work on windows classes that have the CS_DBLCLKS flag set. Our own example app code doesn't set this flag.
 IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
@@ -192,11 +261,13 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
     case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK:
     case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK:
     case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK:
+    case WM_XBUTTONDOWN: case WM_XBUTTONDBLCLK:
     {
         int button = 0;
-        if (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONDBLCLK) button = 0;
-        if (msg == WM_RBUTTONDOWN || msg == WM_RBUTTONDBLCLK) button = 1;
-        if (msg == WM_MBUTTONDOWN || msg == WM_MBUTTONDBLCLK) button = 2;
+        if (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONDBLCLK) { button = 0; }
+        if (msg == WM_RBUTTONDOWN || msg == WM_RBUTTONDBLCLK) { button = 1; }
+        if (msg == WM_MBUTTONDOWN || msg == WM_MBUTTONDBLCLK) { button = 2; }
+        if (msg == WM_XBUTTONDOWN || msg == WM_XBUTTONDBLCLK) { button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1) ? 3 : 4; }
         if (!ImGui::IsAnyMouseDown() && ::GetCapture() == NULL)
             ::SetCapture(hwnd);
         io.MouseDown[button] = true;
@@ -205,11 +276,13 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
     case WM_LBUTTONUP:
     case WM_RBUTTONUP:
     case WM_MBUTTONUP:
+    case WM_XBUTTONUP:
     {
         int button = 0;
-        if (msg == WM_LBUTTONUP) button = 0;
-        if (msg == WM_RBUTTONUP) button = 1;
-        if (msg == WM_MBUTTONUP) button = 2;
+        if (msg == WM_LBUTTONUP) { button = 0; }
+        if (msg == WM_RBUTTONUP) { button = 1; }
+        if (msg == WM_MBUTTONUP) { button = 2; }
+        if (msg == WM_XBUTTONUP) { button = (GET_XBUTTON_WPARAM(wParam) == XBUTTON1) ? 3 : 4; }
         io.MouseDown[button] = false;
         if (!ImGui::IsAnyMouseDown() && ::GetCapture() == hwnd)
             ::ReleaseCapture();
@@ -233,13 +306,16 @@ IMGUI_IMPL_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARA
         return 0;
     case WM_CHAR:
         // You can also use ToAscii()+GetKeyboardState() to retrieve characters.
-        if (wParam > 0 && wParam < 0x10000)
-            io.AddInputCharacter((unsigned short)wParam);
+        io.AddInputCharacter((unsigned int)wParam);
         return 0;
     case WM_SETCURSOR:
         if (LOWORD(lParam) == HTCLIENT && ImGui_ImplWin32_UpdateMouseCursor())
             return 1;
         return 0;
+    case WM_DEVICECHANGE:
+        if ((UINT)wParam == DBT_DEVNODES_CHANGED)
+            g_WantUpdateHasGamepad = true;
+        return 0;
     }
     return 0;
 }