Version 1.48

Error: assuming signed overflow does not occur when assuming that (X -
c) > X is always false [-Werror=strict-overflow]

.gitignore

@@ -1 +0,0 @@
-imgui.ini

.travis.yml

@@ -2,6 +2,7 @@ language: cpp
 
 os:
   - linux
+  - osx
 
 compiler:
   - gcc

README.md

@@ -1,61 +1,73 @@
-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 and will stay free, but needs your support to sustain its development. There are lots of desirable new features and maintenance to do. If you work for a company using ImGui or have the means to do so, please consider financial support)
+
 [![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui) [![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)
 
-ImGui is a bloat-free graphical user interface library for C++. It outputs vertex buffers that you can render in your 3D-pipeline enabled application. It is portable, renderer agnostic and carries minimal amount of dependencies. It is based on an "immediate" graphical user interface paradigm which allows you to build user interfaces with ease.
+dear imgui (AKA ImGui), is a bloat-free graphical user interface library for C++. It outputs vertex buffers that you can render in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
 
-ImGui is designed to enable fast iteration and allow programmers to create "content creation" or "debug" tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and thus lacks certain features normally found in more high-level libraries.
+ImGui is designed to enable fast iteration and 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 thus lacks certain features normally found in more high-level libraries.
 
-ImGui is particularly suited to integration in 3D applications, fullscreen applications, embedded applications, games, or any applications on consoles platforms where operating system features are non-standard. 
+ImGui is particularly suited to integration in realtime 3D applications, fullscreen applications, embedded applications, games, or any applications on consoles platforms where operating system features are non-standard. 
 
-ImGui is self-contained within 6 files that you can easily copy and compile into your application/engine:
+ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
 
   - imgui.cpp
   - imgui.h
+  - imgui_demo.cpp
+  - imgui_draw.cpp
+  - imgui_internal.h
   - imconfig.h (empty by default, user-editable)
   - stb_rect_pack.h
   - stb_textedit.h
   - stb_truetype.h
 
+No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+
 Your code passes mouse/keyboard inputs and settings to ImGui (see example applications for more details). After ImGui is setup, you can use it like in this example:
 
-![screenshot of sample code alongside its output with ImGui](/web/code_sample_01.png?raw=true)
+![screenshot of sample code alongside its output with ImGui](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/code_sample_01.png)
 
-ImGui outputs vertex buffers and simple command-lists that you can render in your application. 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 ImGui with your existing codebase. 
+ImGui outputs vertex buffers and simple command-lists that you can 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 ImGui with your existing codebase. 
 
-ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue feature of compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! 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, etc. 
+ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue 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! 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, etc.  
 
 Demo
 ----
 
-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 the features of ImGui, you can download binaries of the demo app here.
-- [imgui-demo-binaries-20150531.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20150531.zip) (Windows binaries, ImGui 1.40 WIP 2015/05/31, 4 executables, 432 KB)
+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 the features of ImGui, you can download Windows binaries of the demo app here.
+- [imgui-demo-binaries-20151226.zip](http://www.miracleworld.net/imgui/binaries/imgui-demo-binaries-20151226.zip) (Windows binaries, ImGui 1.47 2015/12/26, 4 executables, 515 KB)
 
 
 Gallery
 -------
 
-![screenshot 1](/web/test_window_01.png?raw=true)
-![screenshot 2](/web/test_window_02.png?raw=true)
-![screenshot 3](/web/test_window_03.png?raw=true)
-![screenshot 4](/web/test_window_04.png?raw=true)
-![screenshot 5](/web/test_window_05_menus.png?raw=true)
-![screenshot 6](/web/examples_03.png?raw=true)
-![screenshot 7](/web/examples_02.png?raw=true)
+See the [Screenshots Thread](https://github.com/ocornut/imgui/issues/123) for some user creations.
+
+![screenshot 1](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/examples_01.png)
+![screenshot 2](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/examples_02.png)
+
+[![profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler-880.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v148/profiler.png)
+
+![screenshot 2](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v143/test_window_01.png)
+![screenshot 3](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v143/test_window_02.png)
+![screenshot 4](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v143/test_window_03.png)
+![screenshot 5](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v140/test_window_05_menus.png)
+![screenshot 6](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v143/skinning_sample_02.png)
+![screenshot 7](https://cloud.githubusercontent.com/assets/8225057/7903336/96f0fb7c-07d0-11e5-95d6-41c6a1595e5a.png)
 
 ImGui can load TTF fonts. UTF-8 is supported for text display and input. Here using Arial Unicode font to display Japanese. Initialize custom font with:
 ```
 ImGuiIO& io = ImGui::GetIO();
-io.Fonts->AddFontFromFileTTF("ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
-```
-For Microsoft IME, pass your HWND to enable IME positioning:
-```
+io.Fonts->AddFontFromFileTTF("ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+// For Microsoft IME, pass your HWND to enable IME positioning:
 io.ImeWindowHandle = my_hwnd;
 ```
-![Japanese screenshot](/web/code_sample_01_jp.png?raw=true)
+![Japanese screenshot](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/code_sample_01_jp.png)
 
 References
 ----------
@@ -66,48 +78,67 @@ The Immediate Mode GUI paradigm may at first appear unusual to some users. This
 - [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).
 
-Frequently Asked Question
--------------------------
+See the [Links page](https://github.com/ocornut/imgui/wiki/Links) for third-party bindings to different languages and frameworks.
+
+Frequently Asked Question (FAQ)
+-------------------------------
 
 <b>Where is the documentation?</b>
 
 - The documentation is at the top of imgui.cpp + effectively imgui.h. 
-- Example code is in the ImGui::ShowTestWindow() 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 OpenGL/DirectX are provided in the examples/ folder. 
+- Example code is in imgui_demo.cpp and particularly the ImGui::ShowTestWindow() 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.
+
+<b>Why the odd dual naming, "dear imgui" vs "ImGui"?</b>
+
+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.
+
+<b>How do I update to a newer version of ImGui?</b>
+<br><b>Can I have multiple widgets with the same label? Can I have widget without a label? (Yes)</b>
+<br><b>I integrated ImGui in my engine and the text or lines are blurry..</b>
+<br><b>I integrated ImGui in my engine and some elements are disappearing when I move windows around..</b>
+<br><b>How can I load a different font than the default?</b>
+<br><b>How can I load multiple fonts?</b>
+<br><b>How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?</b>
+
+See the FAQ in imgui.cpp for answers.
 
 <b>How do you use ImGui on a platform that may not have a mouse or keyboard?</b>
 
-I recommend using [Synergy](http://synergy-project.org) ([sources](https://github.com/synergy/synergy)). In particular, the _src/micro/uSynergy.c_ file contains a small client that you can use on any platform to connect to your host PC. You can seamlessly use your PC input devices from a video game console or a tablet. ImGui allows to increase the hit box of widgets (via the _TouchPadding_ setting) to accomodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse to allow optimising for screen real-estate.
-
-<b>I integrated ImGui in my engine and the text or lines are blurry..</b>
-
-In your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f).
+I recommend using [Synergy](http://synergy-project.org) ([sources](https://github.com/synergy/synergy)). In particular, the _src/micro/uSynergy.c_ file contains a small client that you can use on any platform to connect to your host PC. You can seamlessly use your PC input devices from a video game console or a tablet. ImGui allows to increase the hit box of widgets (via the _TouchPadding_ setting) to accommodate a little for the lack of precision of touch inputs, but it is recommended you use a mouse to allow optimising for screen real-estate.
 
 <b>Can you create elaborate/serious tools with ImGui?</b>
 
-Yes. I have written data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. However note that ImGui is programmer centric and the immediate-mode GUI paradigm might requires a bit of adaptation before you can realize its full potential. 
+Yes. I have written data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools).
+
+ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Many programmers have unfortunately been taught by their environment to make unnecessarily complicated things. ImGui is about making things that are simple, efficient and powerful.
 
 <b>Is ImGui fast?</b>
 
-Down to the fundation of its visual design, ImGui is engineered to be fairly performant both in term of CPU and GPU usage. Running elaborate code and creating elaborate UI will of course have a cost but ImGui aims to minimize it.
+Probably fast enough for most uses. Down to the fundation of its visual design, ImGui is engineered to be fairly performant both in term of CPU and GPU usage. Running elaborate code and creating elaborate UI will of course have a cost but ImGui aims to minimize it.
 
 Mileage may vary but the following screenshot can give you a rough idea of the cost of running and rendering UI code (In the case of a trivial demo application like this one, your driver/os setup are likely to be the bottleneck. Testing performance as part of a real application is recommended).
 
-![performance screenshot](/web/performance_01.png?raw=true)
+![performance screenshot](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v138/performance_01.png)
 
 This is showing framerate for the full application loop on my 2011 iMac running Windows 7, OpenGL, AMD Radeon HD 6700M with an optimized executable. In contrast, librairies featuring higher-quality rendering and layouting techniques may have a higher resources footprint.
 
-If you intend to display large lists of items (say, 1000+) it can be beneficial for your code to perform clipping manually - using helpers such as CalcListClipping() - in order to avoid submitting them to ImGui in the first place. Even though ImGui will discard your clipped items it still needs to calculate their size and that overhead will add up if you have thousands of items. If you can handle clipping and height positionning yourself then browsing a list with millions of items isn't a problem.
+If you intend to display large lists of items (say, 1000+) it can be beneficial for your code to perform clipping manually - one way is using helpers such as ImGuiListClipper - in order to avoid submitting them to ImGui in the first place. Even though ImGui will discard your clipped items it still needs to calculate their size and that overhead will add up if you have thousands of items. If you can handle clipping and height positionning yourself then browsing a list with millions of items isn't a problem.
 
 <b>Can you reskin the look of ImGui?</b>
 
 You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as ImGui is designed and optimised to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. 
 
+This is [LumixEngine](https://github.com/nem0/LumixEngine) with a minor skinning hack + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged).
+
+[![Skinning in LumixEngine](https://cloud.githubusercontent.com/assets/8225057/13198792/92808c5c-d812-11e5-9507-16b63918b05b.jpg)](https://cloud.githubusercontent.com/assets/8225057/13044612/59f07aec-d3cf-11e5-8ccb-39adf2e13e69.png)
+
 <b>Why using C++ (as opposed to C)?</b>
 
 ImGui takes advantage of a few C++ features for convenience but nothing anywhere Boost-insanity/quagmire. In particular, 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 but could be removed.
 
-Shall someone wants to use ImGui from another language, it should be possible to wrap ImGui to be used from a raw C API in the future.
+There is an unofficial but reasonably maintained [c-api for ImGui](https://github.com/Extrawurst/cimgui) by Stephan Dilly. I would suggest using your target language functionality to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. It was really designed with C++ in mind and may not make the same amount of sense with another language. Also see [Links](https://github.com/ocornut/imgui/wiki/Links) for third-party bindings to other languages.
 
 Donate
 ------
@@ -116,30 +147,35 @@ Donate
 
 [![Patreon](https://cloud.githubusercontent.com/assets/8225057/5990484/70413560-a9ab-11e4-8942-1a63607c0b00.png)](http://www.patreon.com/imgui) [![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)
 
-I'm currently an independant developer and your contributions are very meaningful to me. I have setup an [**ImGui Patreon page**](http://www.patreon.com/imgui) if you want to donate and enable me to spend more time improving the library. If your company uses ImGui please consider making a contribution. One-off donations are also greatly appreciated (PayPal link above). I am also available for hire to work on or with ImGui. Thanks!
+I'm currently an independent developer and your contributions are useful. I have setup an [**ImGui Patreon page**](http://www.patreon.com/imgui) if you want to donate and enable me to spend more time improving the library. If your company uses ImGui please consider making a contribution. One-off donations are also greatly appreciated. I am available for hire to work on or with ImGui. Thanks!
 
 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). 
 
+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. 
+
 Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
 
 Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
 
 Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
 
-ImGui development is financially supported on [**Patreon**](http://www.patreon.com/imgui).
+Ongoing ImGui development is financially supported on [**Patreon**](http://www.patreon.com/imgui).
 
-Special supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Stefano Cristiano.
+Double-chocolate sponsors:
+- Media Molecule, Mobigame
 
-And:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly.
+Salty caramel supporters:
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Stefano Cristiano, Chris Genova, ikrima
+
+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, Jeff Roberts, Matt Reyer, Colin Riley.
 
 And other supporters; thanks!
 
 License
 -------
 
-ImGui is licensed under the MIT License, see LICENSE for more information.
+Dear ImGui is licensed under the MIT License, see LICENSE for more information.

examples/.gitignore

@@ -7,6 +7,10 @@ directx9_example/Debug/*
 directx9_example/Release/*
 directx9_example/ipch/*
 directx9_example/x64/*
+directx10_example/Debug/*
+directx10_example/Release/*
+directx10_example/ipch/*
+directx10_example/x64/*
 directx11_example/Debug/*
 directx11_example/Release/*
 directx11_example/ipch/*
@@ -15,14 +19,20 @@ opengl_example/Debug/*
 opengl_example/Release/*
 opengl_example/ipch/*
 opengl_example/x64/*
+opengl_example/opengl_example
 opengl3_example/Debug/*
 opengl3_example/Release/*
 opengl3_example/ipch/*
 opengl3_example/x64/*
+opengl3_example/opengl3_example
 *.opensdf
 *.sdf
 *.suo
 *.vcxproj.user
+*.o
+*.obj
+*.exe
+*.pdb
 
 ## Ini files
 imgui.ini

examples/README.txt

@@ -1,24 +1,86 @@
 Those are standalone ready-to-build applications to demonstrate ImGui.
-Unfortunately in 2015 it is still a massive pain to create and maintain portable build files.
-I choose to provide Visual Studio 10 .sln files and Makefile for Linux/OSX. 
-Please let me know if they don't work with your setup!
-You can probably just import the .cpp files into your own system and figure out the linkage from there.
+Binaries of some of those demos: http://www.miracleworld.net/imgui/binaries
 
+Third party languages and frameworks bindings: https://github.com/ocornut/imgui/wiki/Links
+(languages: C, .net, rust, D, Python, Lua..)
+(frameworks: DX12, Vulkan, Cinder, OpenGLES, openFrameworks, Cocos2d-x, SFML, Flexium, NanoRT, Irrlicht..)
+(extras: RemoteImGui, ImWindow, imgui_wm..)
+
+TL;DR; 
+ - Newcomers, read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup ImGui in your codebase.
+ - Refer to 'opengl_example' to understand how the library is setup, it is the simplest one.
+   The other examples requires more boilerplate and are harder to read.
+ - 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.
+ - If you have your own engine, you probably want to start from 'opengl_example' and adapt it to 
+   your engine, but you can read the other examples as well.
+
+ImGui is highly portable and only requires a few things to run:
+ - Providing mouse/keyboard inputs
+ - Load the font atlas texture into graphics memory
+ - Providing a render function to render indexed textured triangles
+ - Optional: clipboard support, mouse cursor supports, Windows IME support, etc.
+So this is essentially what those examples are doing + the obligatory cruft for portability.
+
+Unfortunately in 2016 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+ 
+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.
+
+ImGui has zero frame of lag for most behaviors and one frame of lag for some behaviors. 
+At 60 FPS your experience should be pleasant. Consider that OS mouse cursors are typically drawn through 
+a specific hardware accelerated route and may feel smoother than other GPU rendered contents. You may 
+experiment with the io.MouseDrawCursor flag to request ImGui to draw a mouse cursor itself, to visualize 
+the lag between an hardware cursor and a software cursor. It might be beneficial to the user experience
+to switch to a software rendered cursor when an interactive drag is in progress. 
+Also note that some setup or GPU drivers may be causing extra lag (possibly by enforcing triple buffering), 
+leaving you with no option but sadness/anger (Intel GPU drivers were reported as such).
 
 opengl_example/
     OpenGL example, using GLFW + fixed pipeline.
     This is simple and should work for all OpenGL enabled applications.
-    Prefer following this example since it is the shortest one!
+    Prefer following this example to learn how ImGui works!
+	(You can use this code in a GL3/GL4 context but make sure you disable the programmable pipeline
+	by calling "glUseProgram(0)" before ImGui::Render.)
 
 opengl3_example/
-    OpenGL exemple, using GLFW/GL3W + programmable pipeline.
-    This uses more modern calls and custom shaders.
-    I don't think there is an advantage using this over the simpler example, but it is provided for reference.
+    OpenGL example, using GLFW/GL3W + programmable pipeline.
+    This uses more modern OpenGL calls and custom shaders. It's more messy.
 
 directx9_example/
     DirectX9 example, Windows only.
 	
+directx10_example/
+    DirectX10 example, Windows only.
+    This is quite long and tedious, because: DirectX10.
+
 directx11_example/
     DirectX11 example, Windows only.
     This is quite long and tedious, because: DirectX11.
 	
+apple_example/
+    OSX & iOS example.
+    On iOS, Using Synergy to access keyboard/mouse data from server computer.
+    Synergy keyboard integration is rather hacky.
+
+sdl_opengl_example/
+    SDL2 + OpenGL example.
+
+sdl_opengl_example/
+    SDL2 + OpenGL3 example.
+
+allegro5_example/
+    Allegro 5 example.
+	 
+marmalade_example/
+    Marmalade example using IwGx
+    
+vulkan_example/
+	Vulkan example.
+	This is quite long and tedious, because: Vulkan.
+

examples/allegro5_example/README.md

@@ -0,0 +1,15 @@
+
+# How to Build
+
+- On Ubuntu 14.04+
+
+```bash
+g++ -I ../imgui main.cpp imgui_impl_a5.cpp ../imgui/imgui*.cpp -lallegro -lallegro_primitives
+```
+
+- On Windows with Visual Studio's CLI
+
+```
+set ALLEGRODIR=path_to_your_allegro5_folder
+cl /Zi /MD /I %ALLEGRODIR%\include /I ..\.. main.cpp imgui_impl_a5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib
+```

examples/allegro5_example/imgui_impl_a5.cpp

@@ -0,0 +1,292 @@
+// ImGui Allegro 5 bindings
+// In this binding, ImTextureID is used to store a 'ALLEGRO_BITMAP*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+// by @birthggd
+
+#include <stdint.h>     // uint64_t
+#include <cstring>      // memcpy
+#include <imgui.h>
+#include "imgui_impl_a5.h"
+#include <allegro5/allegro.h>
+#include <allegro5/allegro_primitives.h>
+
+#ifdef _WIN32
+#include <allegro5/allegro_windows.h>
+#endif
+
+// Data
+static ALLEGRO_DISPLAY*         g_Display = NULL;
+static ALLEGRO_BITMAP*          g_Texture = NULL;
+static double                   g_Time = 0.0;
+static ALLEGRO_MOUSE_CURSOR*    g_MouseCursorInvisible = NULL;
+static ALLEGRO_VERTEX_DECL*     g_VertexDecl = NULL;
+
+#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
+
+struct ImDrawVertAllegro
+{
+    ImVec2 pos;
+    ImVec2 uv;
+    ALLEGRO_COLOR col;
+};
+
+void ImGui_ImplA5_RenderDrawLists(ImDrawData* draw_data)
+{
+    int op, src, dst;
+    al_get_blender(&op, &src, &dst);
+    al_set_blender(ALLEGRO_ADD, ALLEGRO_ALPHA, ALLEGRO_INVERSE_ALPHA);
+
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+
+        // FIXME-OPT: Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats
+        static ImVector<ImDrawVertAllegro> vertices;
+        vertices.resize(cmd_list->VtxBuffer.size());
+        for (int i = 0; i < cmd_list->VtxBuffer.size(); ++i)
+        {
+            const ImDrawVert &dv = cmd_list->VtxBuffer[i];
+            ImDrawVertAllegro v;
+            v.pos = dv.pos;
+            v.uv = dv.uv;
+            unsigned char *c = (unsigned char*)&dv.col;
+            v.col = al_map_rgba(c[0], c[1], c[2], c[3]);
+            vertices[i] = v;
+        }
+
+        // FIXME-OPT: Unfortunately Allegro doesn't support 16-bit indices
+        // You can also use '#define ImDrawIdx unsigned int' in imconfig.h and request ImGui to output 32-bit indices
+        static ImVector<int> indices;
+        indices.resize(cmd_list->IdxBuffer.size());
+        for (int i = 0; i < cmd_list->IdxBuffer.size(); ++i)
+            indices[i] = (int)cmd_list->IdxBuffer.Data[i];
+
+        int idx_offset = 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)
+            {
+                pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                ALLEGRO_BITMAP* texture = (ALLEGRO_BITMAP*)pcmd->TextureId;
+                al_set_clipping_rectangle(pcmd->ClipRect.x, pcmd->ClipRect.y, pcmd->ClipRect.z-pcmd->ClipRect.x, pcmd->ClipRect.w-pcmd->ClipRect.y);
+                al_draw_indexed_prim(&vertices[0], g_VertexDecl, texture, &indices[idx_offset], pcmd->ElemCount, ALLEGRO_PRIM_TRIANGLE_LIST);
+            }
+            idx_offset += pcmd->ElemCount;
+        }
+    }
+
+    // Restore modified state
+    al_set_blender(op, src, dst);
+    al_set_clipping_rectangle(0, 0, al_get_display_width(g_Display), al_get_display_height(g_Display));
+}
+
+bool Imgui_ImplA5_CreateDeviceObjects()
+{
+    // Build texture atlas
+    ImGuiIO &io = ImGui::GetIO();
+    unsigned char *pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Create texture
+    int flags = al_get_new_bitmap_flags();
+    int fmt = al_get_new_bitmap_format();
+    al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP|ALLEGRO_MIN_LINEAR|ALLEGRO_MAG_LINEAR);
+    al_set_new_bitmap_format(ALLEGRO_PIXEL_FORMAT_ABGR_8888_LE);
+    ALLEGRO_BITMAP* img = al_create_bitmap(width, height);
+    al_set_new_bitmap_flags(flags);
+    al_set_new_bitmap_format(fmt);
+    if (!img)
+        return false;
+
+    ALLEGRO_LOCKED_REGION *locked_img = al_lock_bitmap(img, al_get_bitmap_format(img), ALLEGRO_LOCK_WRITEONLY);
+    if (!locked_img)
+    {
+        al_destroy_bitmap(img);
+        return false;
+    }
+    memcpy(locked_img->data, pixels, sizeof(int)*width*height);
+    al_unlock_bitmap(img);
+
+    // Convert software texture to hardware texture.
+    ALLEGRO_BITMAP* cloned_img = al_clone_bitmap(img);
+    al_destroy_bitmap(img);
+    if (!cloned_img)
+        return false;
+
+    // Store our identifier
+    io.Fonts->TexID = (void*)cloned_img;
+    g_Texture = cloned_img;
+
+    // Create an invisible mouse cursor
+    // Because al_hide_mouse_cursor() seems to mess up with the actual inputs..
+    ALLEGRO_BITMAP* mouse_cursor = al_create_bitmap(8,8);
+    g_MouseCursorInvisible = al_create_mouse_cursor(mouse_cursor, 0, 0);
+    al_destroy_bitmap(mouse_cursor);
+
+    return true;
+}
+
+void ImGui_ImplA5_InvalidateDeviceObjects()
+{
+    if (g_Texture)
+    {
+        al_destroy_bitmap(g_Texture);
+        ImGui::GetIO().Fonts->TexID = NULL;
+        g_Texture = NULL;
+    }
+    if (g_MouseCursorInvisible)
+    {
+        al_destroy_mouse_cursor(g_MouseCursorInvisible);
+        g_MouseCursorInvisible = NULL;
+    }
+}
+
+bool ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display)
+{
+    g_Display = display;
+
+    // Create custom vertex declaration.
+    // Unfortunately Allegro doesn't support 32-bits packed colors so we have to convert them to 4 floats.
+    // We still use a custom declaration to use 'ALLEGRO_PRIM_TEX_COORD' instead of 'ALLEGRO_PRIM_TEX_COORD_PIXEL' else we can't do a reliable conversion.
+    ALLEGRO_VERTEX_ELEMENT elems[] =
+    {
+        { ALLEGRO_PRIM_POSITION, ALLEGRO_PRIM_FLOAT_2, OFFSETOF(ImDrawVertAllegro, pos) },
+        { ALLEGRO_PRIM_TEX_COORD, ALLEGRO_PRIM_FLOAT_2, OFFSETOF(ImDrawVertAllegro, uv) },
+        { ALLEGRO_PRIM_COLOR_ATTR, 0, OFFSETOF(ImDrawVertAllegro, col) },
+        { 0, 0, 0 }
+    };
+    g_VertexDecl = al_create_vertex_decl(elems, sizeof(ImDrawVertAllegro));
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = ALLEGRO_KEY_TAB;
+    io.KeyMap[ImGuiKey_LeftArrow] = ALLEGRO_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = ALLEGRO_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = ALLEGRO_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = ALLEGRO_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = ALLEGRO_KEY_PGUP;
+    io.KeyMap[ImGuiKey_PageDown] = ALLEGRO_KEY_PGDN;
+    io.KeyMap[ImGuiKey_Home] = ALLEGRO_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = ALLEGRO_KEY_END;
+    io.KeyMap[ImGuiKey_Delete] = ALLEGRO_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = ALLEGRO_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Enter] = ALLEGRO_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = ALLEGRO_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = ALLEGRO_KEY_A;
+    io.KeyMap[ImGuiKey_C] = ALLEGRO_KEY_C;
+    io.KeyMap[ImGuiKey_V] = ALLEGRO_KEY_V;
+    io.KeyMap[ImGuiKey_X] = ALLEGRO_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = ALLEGRO_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = ALLEGRO_KEY_Z;
+
+    io.RenderDrawListsFn = ImGui_ImplA5_RenderDrawLists;        // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+#ifdef _WIN32
+    io.ImeWindowHandle = al_get_win_window_handle(g_Display);
+#endif
+
+    return true;
+}
+
+void ImGui_ImplA5_Shutdown()
+{
+    ImGui_ImplA5_InvalidateDeviceObjects();
+    ImGui::Shutdown();
+}
+
+bool ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT *ev)
+{
+    ImGuiIO &io = ImGui::GetIO();
+
+    switch (ev->type)
+    {
+    case ALLEGRO_EVENT_MOUSE_AXES:
+        io.MouseWheel += ev->mouse.dz;
+        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);
+        return true;
+    case ALLEGRO_EVENT_KEY_DOWN:
+    case ALLEGRO_EVENT_KEY_UP:
+        if (ev->keyboard.display == g_Display)
+            io.KeysDown[ev->keyboard.keycode] = (ev->type == ALLEGRO_EVENT_KEY_DOWN);
+        return true;
+    }
+    return false;
+}
+
+
+void ImGui_ImplA5_NewFrame()
+{
+    if (!g_Texture)
+        Imgui_ImplA5_CreateDeviceObjects();
+
+    ImGuiIO &io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    w = al_get_display_width(g_Display);
+    h = al_get_display_height(g_Display);
+    io.DisplaySize = ImVec2((float)w, (float)h);
+
+    // Setup time step
+    double current_time = al_get_time();
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    // Setup inputs
+    ALLEGRO_KEYBOARD_STATE keys;
+    al_get_keyboard_state(&keys);
+    io.KeyCtrl = al_key_down(&keys, ALLEGRO_KEY_LCTRL) || al_key_down(&keys, ALLEGRO_KEY_RCTRL);
+    io.KeyShift = al_key_down(&keys, ALLEGRO_KEY_LSHIFT) || al_key_down(&keys, ALLEGRO_KEY_RSHIFT);
+    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(-1, -1);
+    }
+
+    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);
+
+    // Hide OS mouse cursor if ImGui is drawing it
+    if (io.MouseDrawCursor)
+    {
+        al_set_mouse_cursor(g_Display, g_MouseCursorInvisible);
+    }
+    else
+    {
+        ALLEGRO_SYSTEM_MOUSE_CURSOR cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_DEFAULT;
+        switch (ImGui::GetMouseCursor())
+        {
+        case ImGuiMouseCursor_TextInput:    cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_EDIT; break;
+        case ImGuiMouseCursor_Move:         cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_MOVE; break;
+        case ImGuiMouseCursor_ResizeNS:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_N; break;
+        case ImGuiMouseCursor_ResizeEW:     cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_E; break;
+        case ImGuiMouseCursor_ResizeNESW:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NE; break;
+        case ImGuiMouseCursor_ResizeNWSE:   cursor_id = ALLEGRO_SYSTEM_MOUSE_CURSOR_RESIZE_NW; break;
+        }
+        al_set_system_mouse_cursor(g_Display, cursor_id);
+    }
+
+    // Start the frame
+    ImGui::NewFrame();
+}

examples/allegro5_example/imgui_impl_a5.h

@@ -0,0 +1,22 @@
+// ImGui Allegro 5 bindings
+// In this binding, ImTextureID is used to store a 'ALLEGRO_BITMAP*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+// by @birthggd
+
+#pragma once
+
+struct ALLEGRO_DISPLAY;
+union ALLEGRO_EVENT;
+
+IMGUI_API bool    ImGui_ImplA5_Init(ALLEGRO_DISPLAY* display);
+IMGUI_API void    ImGui_ImplA5_Shutdown();
+IMGUI_API void    ImGui_ImplA5_NewFrame();
+IMGUI_API bool    ImGui_ImplA5_ProcessEvent(ALLEGRO_EVENT* event);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_API bool    Imgui_ImplA5_CreateDeviceObjects();
+IMGUI_API void    ImGui_ImplA5_InvalidateDeviceObjects();

examples/allegro5_example/main.cpp

@@ -0,0 +1,100 @@
+// 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.
+
+#include <stdint.h>
+#include <allegro5/allegro.h>
+#include <allegro5/allegro_primitives.h>
+#include <imgui.h>
+#include "imgui_impl_a5.h"
+
+int main(int, char**)
+{
+    // Setup Allegro
+    al_init();
+    al_install_keyboard();
+    al_install_mouse();
+    al_init_primitives_addon();
+    al_set_new_display_flags(ALLEGRO_RESIZABLE);
+    ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
+    al_set_window_title(display, "ImGui Allegro 5 example");
+    ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue();
+    al_register_event_source(queue, al_get_display_event_source(display));
+    al_register_event_source(queue, al_get_keyboard_event_source());
+    al_register_event_source(queue, al_get_mouse_event_source());
+
+    // Setup ImGui binding
+    ImGui_ImplA5_Init(display);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+    bool show_test_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImColor(114, 144, 154);
+
+    // Main loop
+    bool running = true;
+    while (running)
+    {
+        ALLEGRO_EVENT ev;
+        while (al_get_next_event(queue, &ev))
+        {
+            ImGui_ImplA5_ProcessEvent(&ev);
+            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE) running = false;
+            if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
+            {
+                ImGui_ImplA5_InvalidateDeviceObjects();
+                al_acknowledge_resize(display);
+                Imgui_ImplA5_CreateDeviceObjects();
+            }
+        }
+        ImGui_ImplA5_NewFrame();
+
+        // 1. Show a simple window
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        {
+            static float f;
+            ImGui::Text("Hello, world!");
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+            ImGui::ColorEdit3("clear color", (float*)&clear_color);
+            if (ImGui::Button("Test Window")) show_test_window ^= 1;
+            if (ImGui::Button("Another Window")) show_another_window ^= 1;
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f/ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        }
+
+        // 2. Show another simple window, this time using an explicit Begin/End pair
+        if (show_another_window)
+        {
+            ImGui::SetNextWindowSize(ImVec2(200, 100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Text("Hello");
+            ImGui::End();
+        }
+
+        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
+        if (show_test_window)
+        {
+            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
+            ImGui::ShowTestWindow(&show_test_window);
+        }
+
+        // Rendering
+        al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));
+        ImGui::Render();
+        al_flip_display();
+    }
+
+    // Cleanup
+    ImGui_ImplA5_Shutdown();
+    al_destroy_event_queue(queue);
+    al_destroy_display(display);
+
+    return 0;
+}

examples/apple_example/.gitignore

@@ -0,0 +1,3 @@
+.DS_Store
+imguiex.xcodeproj/project.xcworkspace/
+imguiex.xcodeproj/xcuserdata/

examples/apple_example/README.md

@@ -0,0 +1,41 @@
+# iOS / OSX example
+
+## Introduction
+
+This example is the default XCode "OpenGL" example code, modified to support ImGui and [Synergy](http://synergy-project.org/) to share mouse/keyboard on an iOS device.
+
+It is a rather complex and messy example because of all of the faff required to get an XCode/iOS application running. Refer to the regular OpenGL examples if you want to learn about integrating ImGui. **The opengl3_example/ should also work on OS X and is much simpler.** This is an integration for iOS with Synergy.
+
+Synergy (remote keyboard/mouse) is not required, but it's pretty hard to use ImGui without it. Synergy includes a "uSynergy" library that allows embedding a synergy client, this is what is used here. ImGui supports "TouchPadding", and this is enabled when Synergy is not active.
+
+## How to Use on iOS
+
+* In Synergy, go to Preferences, and uncheck "Use SSL encryption"
+* Run the example app.
+* Tap the "servername" button in the corner
+* Enter the name or the IP of your synergy host
+* If you had previously connected to a server, you may need to kill and re-start the app.
+
+## How to Build on OSX
+
+* Make sure you have install `brew`, if not, please refer to [Homebrew Website](http://brew.sh)
+* Run the command: `brew install glfw3`
+* Double click `imguiex.xcodeproj` and select `imguiex-osx` scheme
+* Click `Run` button
+
+## Notes and TODOs
+
+Things that would be nice but I didn't get around to doing:
+
+* iOS software keyboard not supported for text inputs
+* iOS hardware (bluetooth) keyboards not supported
+* Graceful disconnect/reconnect from uSynergy.
+* Copy/Paste not well-supported
+
+## C++ on iOS / OSX
+
+ImGui is a c++ library. If you want to include it directly, rename your Obj-C file to have the ".mm" extension. 
+
+Alternatively, you can wrap your debug code in a C interface, this is what I am demonstrating here with the "debug_hud.h" interface. Either approach works, use whatever you prefer.
+
+In my case, most of my game code is already in C++ so it's not really an issue and I can use ImGui directly.

examples/apple_example/imguiex-ios/AppDelegate.h

@@ -0,0 +1,13 @@
+//
+//  AppDelegate.h
+//  imguiex
+
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+@property (strong, nonatomic) UIWindow *window;
+
+
+@end
+

examples/apple_example/imguiex-ios/AppDelegate.m

@@ -0,0 +1,41 @@
+//
+//  AppDelegate.m
+//  imguiex
+
+#import "AppDelegate.h"
+
+@interface AppDelegate ()
+
+@end
+
+@implementation AppDelegate
+
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+    // Override point for customization after application launch.
+    return YES;
+}
+
+- (void)applicationWillResignActive:(UIApplication *)application {
+    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
+    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
+}
+
+- (void)applicationDidEnterBackground:(UIApplication *)application {
+    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
+    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
+}
+
+- (void)applicationWillEnterForeground:(UIApplication *)application {
+    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
+}
+
+- (void)applicationDidBecomeActive:(UIApplication *)application {
+    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
+}
+
+- (void)applicationWillTerminate:(UIApplication *)application {
+    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
+}
+
+@end

examples/apple_example/imguiex-ios/Base.lproj/LaunchScreen.xib

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="7706" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7703"/>
+        <capability name="Constraints with non-1.0 multipliers" minToolsVersion="5.1"/>
+    </dependencies>
+    <objects>
+        <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
+        <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
+        <view contentMode="scaleToFill" id="iN0-l3-epB">
+            <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
+            <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+            <subviews>
+                <label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="imguiex" textAlignment="center" lineBreakMode="middleTruncation" baselineAdjustment="alignBaselines" minimumFontSize="18" translatesAutoresizingMaskIntoConstraints="NO" id="kId-c2-rCX">
+                    <rect key="frame" x="20" y="140" width="441" height="43"/>
+                    <fontDescription key="fontDescription" type="boldSystem" pointSize="36"/>
+                    <color key="textColor" cocoaTouchSystemColor="darkTextColor"/>
+                    <nil key="highlightedColor"/>
+                </label>
+            </subviews>
+            <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+            <constraints>
+                <constraint firstItem="kId-c2-rCX" firstAttribute="centerY" secondItem="iN0-l3-epB" secondAttribute="bottom" multiplier="1/3" constant="1" id="5cJ-9S-tgC"/>
+                <constraint firstAttribute="centerX" secondItem="kId-c2-rCX" secondAttribute="centerX" id="Koa-jz-hwk"/>
+                <constraint firstItem="kId-c2-rCX" firstAttribute="leading" secondItem="iN0-l3-epB" secondAttribute="leading" constant="20" symbolic="YES" id="fvb-Df-36g"/>
+            </constraints>
+            <nil key="simulatedStatusBarMetrics"/>
+            <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+            <point key="canvasLocation" x="548" y="455"/>
+        </view>
+    </objects>
+</document>

examples/apple_example/imguiex-ios/Base.lproj/Main.storyboard

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="7706" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BV1-FR-VrT">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7703"/>
+        <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
+    </dependencies>
+    <scenes>
+        <!--Game View Controller-->
+        <scene sceneID="tXr-a1-R10">
+            <objects>
+                <viewController id="BV1-FR-VrT" customClass="GameViewController" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="8aa-yV-Osq"/>
+                        <viewControllerLayoutGuide type="bottom" id="qHh-Mt-9TT"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="3se-qz-xqx" customClass="GLKView">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <button opaque="NO" contentMode="scaleToFill" misplaced="YES" contentHorizontalAlignment="left" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="piS-r7-VWh">
+                                <rect key="frame" x="16" y="550" width="136" height="30"/>
+                                <state key="normal" title="servername">
+                                    <color key="titleShadowColor" white="0.5" alpha="1" colorSpace="calibratedWhite"/>
+                                </state>
+                                <connections>
+                                    <action selector="onServernameTapped:" destination="BV1-FR-VrT" eventType="touchUpInside" id="9sO-yv-0be"/>
+                                </connections>
+                            </button>
+                        </subviews>
+                        <color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <constraints>
+                            <constraint firstItem="qHh-Mt-9TT" firstAttribute="top" secondItem="piS-r7-VWh" secondAttribute="bottom" constant="20" id="JxW-fj-qni"/>
+                            <constraint firstItem="piS-r7-VWh" firstAttribute="leading" secondItem="3se-qz-xqx" secondAttribute="leadingMargin" constant="20" id="w5q-gx-tJj"/>
+                        </constraints>
+                    </view>
+                    <connections>
+                        <outlet property="btnServername" destination="piS-r7-VWh" id="9iV-ef-l6M"/>
+                    </connections>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="SZV-WD-TEh" sceneMemberID="firstResponder"/>
+            </objects>
+        </scene>
+    </scenes>
+</document>

examples/apple_example/imguiex-ios/GameViewController.h

@@ -0,0 +1,12 @@
+//
+//  GameViewController.h
+//  imguiex
+
+// This is the OpenGL Example template from XCode, modified to support ImGui
+
+#import <UIKit/UIKit.h>
+#import <GLKit/GLKit.h>
+
+@interface GameViewController : GLKViewController
+
+@end

examples/apple_example/imguiex-ios/GameViewController.m

@@ -0,0 +1,481 @@
+//
+//  GameViewController.m
+//  imguiex
+//
+#import "GameViewController.h"
+#import <OpenGLES/ES2/glext.h>
+
+#import "imgui_impl_ios.h"
+#import "debug_hud.h"
+
+#define BUFFER_OFFSET(i) ((char *)NULL + (i))
+
+#define SERVERNAME_KEY @"ServerName"
+
+#define SERVERNAME_ALERT_TAG (10)
+
+// Uniform index.
+enum
+{
+    UNIFORM_MODELVIEWPROJECTION_MATRIX,
+    UNIFORM_NORMAL_MATRIX,
+    UNIFORM_DIFFUSE_COLOR,
+    
+    NUM_UNIFORMS
+};
+GLint uniforms[NUM_UNIFORMS];
+
+// Attribute index.
+enum
+{
+    ATTRIB_VERTEX,
+    ATTRIB_NORMAL,
+    NUM_ATTRIBUTES
+};
+
+GLfloat gCubeVertexData[216] = 
+{
+    // Data layout for each line below is:
+    // positionX, positionY, positionZ,     normalX, normalY, normalZ,
+    0.5f, -0.5f, -0.5f,        1.0f, 0.0f, 0.0f,
+    0.5f, 0.5f, -0.5f,         1.0f, 0.0f, 0.0f,
+    0.5f, -0.5f, 0.5f,         1.0f, 0.0f, 0.0f,
+    0.5f, -0.5f, 0.5f,         1.0f, 0.0f, 0.0f,
+    0.5f, 0.5f, -0.5f,          1.0f, 0.0f, 0.0f,
+    0.5f, 0.5f, 0.5f,         1.0f, 0.0f, 0.0f,
+    
+    0.5f, 0.5f, -0.5f,         0.0f, 1.0f, 0.0f,
+    -0.5f, 0.5f, -0.5f,        0.0f, 1.0f, 0.0f,
+    0.5f, 0.5f, 0.5f,          0.0f, 1.0f, 0.0f,
+    0.5f, 0.5f, 0.5f,          0.0f, 1.0f, 0.0f,
+    -0.5f, 0.5f, -0.5f,        0.0f, 1.0f, 0.0f,
+    -0.5f, 0.5f, 0.5f,         0.0f, 1.0f, 0.0f,
+    
+    -0.5f, 0.5f, -0.5f,        -1.0f, 0.0f, 0.0f,
+    -0.5f, -0.5f, -0.5f,       -1.0f, 0.0f, 0.0f,
+    -0.5f, 0.5f, 0.5f,         -1.0f, 0.0f, 0.0f,
+    -0.5f, 0.5f, 0.5f,         -1.0f, 0.0f, 0.0f,
+    -0.5f, -0.5f, -0.5f,       -1.0f, 0.0f, 0.0f,
+    -0.5f, -0.5f, 0.5f,        -1.0f, 0.0f, 0.0f,
+    
+    -0.5f, -0.5f, -0.5f,       0.0f, -1.0f, 0.0f,
+    0.5f, -0.5f, -0.5f,        0.0f, -1.0f, 0.0f,
+    -0.5f, -0.5f, 0.5f,        0.0f, -1.0f, 0.0f,
+    -0.5f, -0.5f, 0.5f,        0.0f, -1.0f, 0.0f,
+    0.5f, -0.5f, -0.5f,        0.0f, -1.0f, 0.0f,
+    0.5f, -0.5f, 0.5f,         0.0f, -1.0f, 0.0f,
+    
+    0.5f, 0.5f, 0.5f,          0.0f, 0.0f, 1.0f,
+    -0.5f, 0.5f, 0.5f,         0.0f, 0.0f, 1.0f,
+    0.5f, -0.5f, 0.5f,         0.0f, 0.0f, 1.0f,
+    0.5f, -0.5f, 0.5f,         0.0f, 0.0f, 1.0f,
+    -0.5f, 0.5f, 0.5f,         0.0f, 0.0f, 1.0f,
+    -0.5f, -0.5f, 0.5f,        0.0f, 0.0f, 1.0f,
+    
+    0.5f, -0.5f, -0.5f,        0.0f, 0.0f, -1.0f,
+    -0.5f, -0.5f, -0.5f,       0.0f, 0.0f, -1.0f,
+    0.5f, 0.5f, -0.5f,         0.0f, 0.0f, -1.0f,
+    0.5f, 0.5f, -0.5f,         0.0f, 0.0f, -1.0f,
+    -0.5f, -0.5f, -0.5f,       0.0f, 0.0f, -1.0f,
+    -0.5f, 0.5f, -0.5f,        0.0f, 0.0f, -1.0f
+};
+
+@interface GameViewController () <UIAlertViewDelegate>
+{
+    GLuint _program;
+    
+    GLKMatrix4 _modelViewProjectionMatrix;
+    GLKMatrix3 _normalMatrix;
+    float _rotation;
+    
+    GLuint _vertexArray;
+    GLuint _vertexBuffer;
+    
+    DebugHUD _hud;
+}
+@property (strong, nonatomic) EAGLContext *context;
+@property (strong, nonatomic) GLKBaseEffect *effect;
+@property (strong, nonatomic) ImGuiHelper *imgui;
+@property (weak, nonatomic) IBOutlet UIButton *btnServername;
+
+@property (strong, nonatomic) NSString *serverName;
+
+- (IBAction)onServernameTapped:(id)sender;
+
+- (void)setupGL;
+- (void)tearDownGL;
+
+- (BOOL)loadShaders;
+- (BOOL)compileShader:(GLuint *)shader type:(GLenum)type file:(NSString *)file;
+- (BOOL)linkProgram:(GLuint)prog;
+- (BOOL)validateProgram:(GLuint)prog;
+@end
+
+@implementation GameViewController
+
+- (void)viewDidLoad
+{
+    [super viewDidLoad];
+    
+    self.context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES2];
+
+    if (!self.context) {
+        NSLog(@"Failed to create ES context");
+    }
+    
+    GLKView *view = (GLKView *)self.view;
+    view.context = self.context;
+    view.drawableDepthFormat = GLKViewDrawableDepthFormat24;
+    
+    [self.btnServername setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
+    
+    [self setupGL];
+    
+    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
+    self.serverName = [userDefaults objectForKey: SERVERNAME_KEY ];
+    self.imgui = [[ImGuiHelper alloc] initWithView:self.view ];
+    if (self.serverName)
+    {
+        [self.btnServername setTitle:self.serverName forState:UIControlStateNormal];
+        [self.imgui connectServer: self.serverName ];
+    }
+    
+    DebugHUD_InitDefaults( &_hud );
+}
+
+- (void)dealloc
+{    
+    [self tearDownGL];
+    
+    if ([EAGLContext currentContext] == self.context) {
+        [EAGLContext setCurrentContext:nil];
+    }
+}
+
+- (void)didReceiveMemoryWarning
+{
+    [super didReceiveMemoryWarning];
+
+    if ([self isViewLoaded] && ([[self view] window] == nil)) {
+        self.view = nil;
+        
+        [self tearDownGL];
+        
+        if ([EAGLContext currentContext] == self.context) {
+            [EAGLContext setCurrentContext:nil];
+        }
+        self.context = nil;
+    }
+
+    // Dispose of any resources that can be recreated.
+}
+
+
+- (BOOL)prefersStatusBarHidden {
+    return YES;
+}
+
+- (IBAction)onServernameTapped:(id)sender
+{
+    UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Set Server" message:@"Enter server name or IP for uSynergy" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:@"Cancel", nil ];
+    alert.alertViewStyle = UIAlertViewStylePlainTextInput;
+    alert.tag = SERVERNAME_ALERT_TAG; // cheezy way to tell which alert view we're responding to
+    [alert show];
+}
+
+- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
+{
+    if ((buttonIndex==0)&&(alertView.tag==SERVERNAME_ALERT_TAG))
+    {
+        // This is really janky. I usually just hardcode the servername since I'm building it anyway.
+        // If you want to properly handle updating the server, you'll want to tear down and recreate
+        // the usynergy stuff in connectServer
+        BOOL serverNameWasSet = self.serverName.length > 0;
+        NSString *serverName = [[alertView textFieldAtIndex:0] text];
+
+        if ([serverName length] > 0) {
+            self.serverName = serverName;
+            NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
+            [userDefaults setObject:serverName forKey:SERVERNAME_KEY ];
+            [userDefaults synchronize];
+            
+            [self.btnServername setTitle:self.serverName forState:UIControlStateNormal];
+            
+            // If we hadn't previously connected, try now
+            if (!serverNameWasSet) {
+                [self.imgui connectServer:self.serverName];
+            }
+            else
+            {
+                UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Servername Updated"
+                                                                message:@"Restart the app to connect the server"
+                                                               delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
+                [alert show];
+            }
+        }
+    }
+}
+
+- (void)setupGL
+{
+    [EAGLContext setCurrentContext:self.context];
+    
+    [self loadShaders];
+    
+    self.effect = [[GLKBaseEffect alloc] init];
+    self.effect.light0.enabled = GL_TRUE;
+    self.effect.light0.diffuseColor = GLKVector4Make(1.0f, 0.4f, 0.4f, 1.0f);
+    
+    glEnable(GL_DEPTH_TEST);
+    
+    glGenVertexArraysOES(1, &_vertexArray);
+    glBindVertexArrayOES(_vertexArray);
+    
+    glGenBuffers(1, &_vertexBuffer);
+    glBindBuffer(GL_ARRAY_BUFFER, _vertexBuffer);
+    glBufferData(GL_ARRAY_BUFFER, sizeof(gCubeVertexData), gCubeVertexData, GL_STATIC_DRAW);
+    
+    glEnableVertexAttribArray(GLKVertexAttribPosition);
+    glVertexAttribPointer(GLKVertexAttribPosition, 3, GL_FLOAT, GL_FALSE, 24, BUFFER_OFFSET(0));
+    glEnableVertexAttribArray(GLKVertexAttribNormal);
+    glVertexAttribPointer(GLKVertexAttribNormal, 3, GL_FLOAT, GL_FALSE, 24, BUFFER_OFFSET(12));
+    
+    glBindVertexArrayOES(0);
+    
+
+}
+
+- (void)tearDownGL
+{
+    [EAGLContext setCurrentContext:self.context];
+    
+    glDeleteBuffers(1, &_vertexBuffer);
+    glDeleteVertexArraysOES(1, &_vertexArray);
+    
+    self.effect = nil;
+    
+    if (_program) {
+        glDeleteProgram(_program);
+        _program = 0;
+    }
+}
+
+#pragma mark - GLKView and GLKViewController delegate methods
+
+- (void)update
+{
+    float aspect = fabs(self.view.bounds.size.width / self.view.bounds.size.height);
+    GLKMatrix4 projectionMatrix = GLKMatrix4MakePerspective(GLKMathDegreesToRadians(65.0f), aspect, 0.1f, 100.0f);
+    
+    self.effect.transform.projectionMatrix = projectionMatrix;
+    
+    GLKMatrix4 baseModelViewMatrix = GLKMatrix4MakeTranslation(0.0f, 0.0f, -4.0f);
+    baseModelViewMatrix = GLKMatrix4Rotate(baseModelViewMatrix, _rotation, 0.0f, 1.0f, 0.0f);
+    
+    // Compute the model view matrix for the object rendered with GLKit
+    GLKMatrix4 modelViewMatrix = GLKMatrix4MakeTranslation(0.0f, 0.0f, -1.5f);
+    modelViewMatrix = GLKMatrix4Rotate(modelViewMatrix, _rotation, 1.0f, 1.0f, 1.0f);
+    modelViewMatrix = GLKMatrix4Multiply(baseModelViewMatrix, modelViewMatrix);
+    
+    self.effect.transform.modelviewMatrix = modelViewMatrix;
+    
+    // Compute the model view matrix for the object rendered with ES2
+    modelViewMatrix = GLKMatrix4MakeTranslation(0.0f, 0.0f, 1.5f);
+    modelViewMatrix = GLKMatrix4Rotate(modelViewMatrix, _rotation, 1.0f, 1.0f, 1.0f);
+    modelViewMatrix = GLKMatrix4Multiply(baseModelViewMatrix, modelViewMatrix);
+    
+    _normalMatrix = GLKMatrix3InvertAndTranspose(GLKMatrix4GetMatrix3(modelViewMatrix), NULL);
+    
+    _modelViewProjectionMatrix = GLKMatrix4Multiply(projectionMatrix, modelViewMatrix);
+    
+    _rotation += self.timeSinceLastUpdate * (_hud.rotation_speed * (M_PI / 180.0));
+}
+
+
+- (void)glkView:(GLKView *)view drawInRect:(CGRect)rect
+{
+    glClearColor(0.65f, 0.65f, 0.65f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+    
+    glBindVertexArrayOES(_vertexArray);
+    
+    // Render the object with GLKit
+    [self.effect prepareToDraw];
+    
+    glDrawArrays(GL_TRIANGLES, 0, 36);
+    
+    // Render the object again with ES2
+    glUseProgram(_program);
+    
+    glUniformMatrix4fv(uniforms[UNIFORM_MODELVIEWPROJECTION_MATRIX], 1, 0, _modelViewProjectionMatrix.m);
+    glUniformMatrix3fv(uniforms[UNIFORM_NORMAL_MATRIX], 1, 0, _normalMatrix.m);
+    glUniform3f(uniforms[UNIFORM_DIFFUSE_COLOR], _hud.cubeColor1[0], _hud.cubeColor1[1], _hud.cubeColor1[2] );
+
+    glDrawArrays(GL_TRIANGLES, 0, 36);
+    
+    [self.imgui newFrame];
+    
+    // Now do our ImGUI UI
+    DebugHUD_DoInterface( &_hud );
+    
+    self.effect.light0.diffuseColor = GLKVector4Make( _hud.cubeColor2[0], _hud.cubeColor2[1], _hud.cubeColor2[2], 1.0f);
+    
+    // Now render Imgui
+    [self.imgui render];
+    
+}
+
+#pragma mark -  OpenGL ES 2 shader compilation
+
+- (BOOL)loadShaders
+{
+    GLuint vertShader, fragShader;
+    NSString *vertShaderPathname, *fragShaderPathname;
+    
+    // Create shader program.
+    _program = glCreateProgram();
+    
+    // Create and compile vertex shader.
+    vertShaderPathname = [[NSBundle mainBundle] pathForResource:@"Shader" ofType:@"vsh"];
+    if (![self compileShader:&vertShader type:GL_VERTEX_SHADER file:vertShaderPathname]) {
+        NSLog(@"Failed to compile vertex shader");
+        return NO;
+    }
+    
+    // Create and compile fragment shader.
+    fragShaderPathname = [[NSBundle mainBundle] pathForResource:@"Shader" ofType:@"fsh"];
+    if (![self compileShader:&fragShader type:GL_FRAGMENT_SHADER file:fragShaderPathname]) {
+        NSLog(@"Failed to compile fragment shader");
+        return NO;
+    }
+    
+    // Attach vertex shader to program.
+    glAttachShader(_program, vertShader);
+    
+    // Attach fragment shader to program.
+    glAttachShader(_program, fragShader);
+    
+    // Bind attribute locations.
+    // This needs to be done prior to linking.
+    glBindAttribLocation(_program, GLKVertexAttribPosition, "position");
+    glBindAttribLocation(_program, GLKVertexAttribNormal, "normal");
+    
+    // Link program.
+    if (![self linkProgram:_program]) {
+        NSLog(@"Failed to link program: %d", _program);
+        
+        if (vertShader) {
+            glDeleteShader(vertShader);
+            vertShader = 0;
+        }
+        if (fragShader) {
+            glDeleteShader(fragShader);
+            fragShader = 0;
+        }
+        if (_program) {
+            glDeleteProgram(_program);
+            _program = 0;
+        }
+        
+        return NO;
+    }
+    
+    // Get uniform locations.
+    uniforms[UNIFORM_MODELVIEWPROJECTION_MATRIX] = glGetUniformLocation(_program, "modelViewProjectionMatrix");
+    uniforms[UNIFORM_NORMAL_MATRIX] = glGetUniformLocation(_program, "normalMatrix");
+    uniforms[UNIFORM_DIFFUSE_COLOR] = glGetUniformLocation(_program, "diffuseColor");
+    
+    // Release vertex and fragment shaders.
+    if (vertShader) {
+        glDetachShader(_program, vertShader);
+        glDeleteShader(vertShader);
+    }
+    if (fragShader) {
+        glDetachShader(_program, fragShader);
+        glDeleteShader(fragShader);
+    }
+    
+    return YES;
+}
+
+- (BOOL)compileShader:(GLuint *)shader type:(GLenum)type file:(NSString *)file
+{
+    GLint status;
+    const GLchar *source;
+    
+    source = (GLchar *)[[NSString stringWithContentsOfFile:file encoding:NSUTF8StringEncoding error:nil] UTF8String];
+    if (!source) {
+        NSLog(@"Failed to load vertex shader");
+        return NO;
+    }
+    
+    *shader = glCreateShader(type);
+    glShaderSource(*shader, 1, &source, NULL);
+    glCompileShader(*shader);
+    
+#if defined(DEBUG)
+    GLint logLength;
+    glGetShaderiv(*shader, GL_INFO_LOG_LENGTH, &logLength);
+    if (logLength > 0) {
+        GLchar *log = (GLchar *)malloc(logLength);
+        glGetShaderInfoLog(*shader, logLength, &logLength, log);
+        NSLog(@"Shader compile log:\n%s", log);
+        free(log);
+    }
+#endif
+    
+    glGetShaderiv(*shader, GL_COMPILE_STATUS, &status);
+    if (status == 0) {
+        glDeleteShader(*shader);
+        return NO;
+    }
+    
+    return YES;
+}
+
+- (BOOL)linkProgram:(GLuint)prog
+{
+    GLint status;
+    glLinkProgram(prog);
+    
+#if defined(DEBUG)
+    GLint logLength;
+    glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &logLength);
+    if (logLength > 0) {
+        GLchar *log = (GLchar *)malloc(logLength);
+        glGetProgramInfoLog(prog, logLength, &logLength, log);
+        NSLog(@"Program link log:\n%s", log);
+        free(log);
+    }
+#endif
+    
+    glGetProgramiv(prog, GL_LINK_STATUS, &status);
+    if (status == 0) {
+        return NO;
+    }
+    
+    return YES;
+}
+
+- (BOOL)validateProgram:(GLuint)prog
+{
+    GLint logLength, status;
+    
+    glValidateProgram(prog);
+    glGetProgramiv(prog, GL_INFO_LOG_LENGTH, &logLength);
+    if (logLength > 0) {
+        GLchar *log = (GLchar *)malloc(logLength);
+        glGetProgramInfoLog(prog, logLength, &logLength, log);
+        NSLog(@"Program validate log:\n%s", log);
+        free(log);
+    }
+    
+    glGetProgramiv(prog, GL_VALIDATE_STATUS, &status);
+    if (status == 0) {
+        return NO;
+    }
+    
+    return YES;
+}
+
+@end

examples/apple_example/imguiex-ios/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,77 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "29x29",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "40x40",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "icon_imgui_60@2x~iphone.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "icon_imgui_60@3x~iphone.png",
+      "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "icon_imgui_76~ipad.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "icon_imgui_76@2x~ipad.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

examples/apple_example/imguiex-ios/Info.plist

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.imgui.example.$(PRODUCT_NAME:rfc1034identifier)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIMainStoryboardFile</key>
+	<string>Main</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+	</array>
+	<key>UIStatusBarHidden</key>
+	<true/>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

examples/apple_example/imguiex-ios/Shaders/Shader.fsh

@@ -0,0 +1,10 @@
+//
+//  Shader.fsh
+//  imguiex
+
+varying lowp vec4 colorVarying;
+
+void main()
+{
+    gl_FragColor = colorVarying;
+}

examples/apple_example/imguiex-ios/Shaders/Shader.vsh

@@ -0,0 +1,25 @@
+//
+//  Shader.vsh
+//  imguiex
+
+attribute vec4 position;
+attribute vec3 normal;
+
+varying lowp vec4 colorVarying;
+
+uniform vec3 diffuseColor;
+uniform mat4 modelViewProjectionMatrix;
+uniform mat3 normalMatrix;
+
+void main()
+{
+    vec3 eyeNormal = normalize(normalMatrix * normal);
+    vec3 lightPosition = vec3(0.0, 0.0, 1.0);
+    
+    float nDotVP = max(0.0, dot(eyeNormal, normalize(lightPosition)));
+    
+    vec3 colorLit = diffuseColor * nDotVP;
+    colorVarying = vec4( colorLit.x, colorLit.y, colorLit.z, 1.0 );
+    
+    gl_Position = modelViewProjectionMatrix * position;
+}

examples/apple_example/imguiex-ios/debug_hud.cpp

@@ -0,0 +1,45 @@
+//
+//  debug_hud.cpp
+//  imguiex
+
+#include <stdio.h>
+
+#include "debug_hud.h"
+#include "imgui.h"
+
+void DebugHUD_InitDefaults( DebugHUD *hud )
+{
+    hud->show_test_window = true;
+    hud->show_example_window = true;
+    hud->rotation_speed = 15.0f;
+    
+    hud->cubeColor1[0] = 0.4f;
+    hud->cubeColor1[1] = 0.4f;
+    hud->cubeColor1[2] = 1.0f;
+    hud->cubeColor1[3] = 1.0f;
+    
+    hud->cubeColor2[0] = 1.0f;
+    hud->cubeColor2[1] = 0.4f;
+    hud->cubeColor2[2] = 0.4f;
+    hud->cubeColor2[3] = 1.0f;
+}
+
+void DebugHUD_DoInterface( DebugHUD *hud )
+{
+    if (hud->show_test_window)
+    {
+        ImGui::SetNextWindowPos( ImVec2( 400, 20 ), ImGuiSetCond_FirstUseEver );
+        ImGui::ShowTestWindow( &hud->show_test_window );
+    }
+    
+    if (hud->show_example_window)
+    {
+        ImGui::SetNextWindowPos( ImVec2( 20, 20 ), ImGuiSetCond_FirstUseEver );
+        ImGui::SetNextWindowSize( ImVec2( 350, 200 ), ImGuiSetCond_FirstUseEver );
+        ImGui::Begin("Another Window", &hud->show_example_window);
+        ImGui::ColorEdit3("Cube 1 Color", hud->cubeColor1);
+        ImGui::ColorEdit3("Cube 2 Color", hud->cubeColor2);
+        ImGui::SliderFloat("Rotation Speed", &hud->rotation_speed, 0.0f, 200.0f);
+        ImGui::End();
+    }
+}

examples/apple_example/imguiex-ios/debug_hud.h

@@ -0,0 +1,25 @@
+//
+//  debug_hud.h
+//  imguiex
+
+#pragma once
+
+typedef struct DebugHUD
+{
+    bool show_test_window;
+    bool show_example_window;
+    float rotation_speed;
+    float cubeColor1[4];
+    float cubeColor2[4];
+} DebugHUD;
+
+#if __cplusplus
+extern "C" {
+#endif
+
+void DebugHUD_InitDefaults( DebugHUD *hud );
+void DebugHUD_DoInterface( DebugHUD *hud );
+
+#if __cplusplus
+}
+#endif

examples/apple_example/imguiex-ios/imgui_impl_ios.h

@@ -0,0 +1,22 @@
+// ImGui iOS+OpenGL+Synergy binding
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+// Providing a standalone iOS application with Synergy integration makes this sample more verbose than others. It also hasn't been tested as much.
+// Refer to other examples to get an easier understanding of how to integrate ImGui into your existing application.
+
+// by Joel Davis (joeld42@gmail.com)
+
+#pragma once
+
+#include <Foundation/Foundation.h>
+#include <UIKit/UIKit.h>
+
+@interface ImGuiHelper : NSObject
+
+- (id) initWithView: (UIView *)view;
+
+- (void)connectServer: (NSString*)serverName;
+
+- (void)render;
+- (void)newFrame;
+
+@end

examples/apple_example/imguiex-ios/imgui_impl_ios.mm

@@ -0,0 +1,803 @@
+// ImGui iOS+OpenGL+Synergy binding
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+// Providing a standalone iOS application with Synergy integration makes this sample more verbose than others. It also hasn't been tested as much.
+// Refer to other examples to get an easier understanding of how to integrate ImGui into your existing application.
+
+#import <OpenGLES/ES3/gl.h>
+#import <OpenGLES/ES3/glext.h>
+
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+#include "imgui_impl_ios.h"
+#include "imgui.h"
+
+#include "uSynergy.h"
+
+// From Carbon HIToolbox/Events.h
+// FIXME: Keyboard mapping is hacked in because Synergy doesn't give us character but only keycode which aren't really portable if you consider keyboard locale. See https://github.com/ocornut/imgui/pull/247
+enum {
+    kVK_ANSI_A                    = 0x00,
+    kVK_ANSI_S                    = 0x01,
+    kVK_ANSI_D                    = 0x02,
+    kVK_ANSI_F                    = 0x03,
+    kVK_ANSI_H                    = 0x04,
+    kVK_ANSI_G                    = 0x05,
+    kVK_ANSI_Z                    = 0x06,
+    kVK_ANSI_X                    = 0x07,
+    kVK_ANSI_C                    = 0x08,
+    kVK_ANSI_V                    = 0x09,
+    kVK_ANSI_B                    = 0x0B,
+    kVK_ANSI_Q                    = 0x0C,
+    kVK_ANSI_W                    = 0x0D,
+    kVK_ANSI_E                    = 0x0E,
+    kVK_ANSI_R                    = 0x0F,
+    kVK_ANSI_Y                    = 0x10,
+    kVK_ANSI_T                    = 0x11,
+    kVK_ANSI_1                    = 0x12,
+    kVK_ANSI_2                    = 0x13,
+    kVK_ANSI_3                    = 0x14,
+    kVK_ANSI_4                    = 0x15,
+    kVK_ANSI_6                    = 0x16,
+    kVK_ANSI_5                    = 0x17,
+    kVK_ANSI_Equal                = 0x18,
+    kVK_ANSI_9                    = 0x19,
+    kVK_ANSI_7                    = 0x1A,
+    kVK_ANSI_Minus                = 0x1B,
+    kVK_ANSI_8                    = 0x1C,
+    kVK_ANSI_0                    = 0x1D,
+    kVK_ANSI_RightBracket         = 0x1E,
+    kVK_ANSI_O                    = 0x1F,
+    kVK_ANSI_U                    = 0x20,
+    kVK_ANSI_LeftBracket          = 0x21,
+    kVK_ANSI_I                    = 0x22,
+    kVK_ANSI_P                    = 0x23,
+    kVK_ANSI_L                    = 0x25,
+    kVK_ANSI_J                    = 0x26,
+    kVK_ANSI_Quote                = 0x27,
+    kVK_ANSI_K                    = 0x28,
+    kVK_ANSI_Semicolon            = 0x29,
+    kVK_ANSI_Backslash            = 0x2A,
+    kVK_ANSI_Comma                = 0x2B,
+    kVK_ANSI_Slash                = 0x2C,
+    kVK_ANSI_N                    = 0x2D,
+    kVK_ANSI_M                    = 0x2E,
+    kVK_ANSI_Period               = 0x2F,
+    kVK_ANSI_Grave                = 0x32,
+    kVK_ANSI_KeypadDecimal        = 0x41,
+    kVK_ANSI_KeypadMultiply       = 0x43,
+    kVK_ANSI_KeypadPlus           = 0x45,
+    kVK_ANSI_KeypadClear          = 0x47,
+    kVK_ANSI_KeypadDivide         = 0x4B,
+    kVK_ANSI_KeypadEnter          = 0x4C,
+    kVK_ANSI_KeypadMinus          = 0x4E,
+    kVK_ANSI_KeypadEquals         = 0x51,
+    kVK_ANSI_Keypad0              = 0x52,
+    kVK_ANSI_Keypad1              = 0x53,
+    kVK_ANSI_Keypad2              = 0x54,
+    kVK_ANSI_Keypad3              = 0x55,
+    kVK_ANSI_Keypad4              = 0x56,
+    kVK_ANSI_Keypad5              = 0x57,
+    kVK_ANSI_Keypad6              = 0x58,
+    kVK_ANSI_Keypad7              = 0x59,
+    kVK_ANSI_Keypad8              = 0x5B,
+    kVK_ANSI_Keypad9              = 0x5C
+};
+
+/* keycodes for keys that are independent of keyboard layout*/
+enum {
+    kVK_Return                    = 0x24,
+    kVK_Tab                       = 0x30,
+    kVK_Space                     = 0x31,
+    kVK_Delete                    = 0x33,
+    kVK_Escape                    = 0x35,
+    kVK_Command                   = 0x37,
+    kVK_Shift                     = 0x38,
+    kVK_CapsLock                  = 0x39,
+    kVK_Option                    = 0x3A,
+    kVK_Control                   = 0x3B,
+    kVK_RightShift                = 0x3C,
+    kVK_RightOption               = 0x3D,
+    kVK_RightControl              = 0x3E,
+    kVK_Function                  = 0x3F,
+    kVK_F17                       = 0x40,
+    kVK_VolumeUp                  = 0x48,
+    kVK_VolumeDown                = 0x49,
+    kVK_Mute                      = 0x4A,
+    kVK_F18                       = 0x4F,
+    kVK_F19                       = 0x50,
+    kVK_F20                       = 0x5A,
+    kVK_F5                        = 0x60,
+    kVK_F6                        = 0x61,
+    kVK_F7                        = 0x62,
+    kVK_F3                        = 0x63,
+    kVK_F8                        = 0x64,
+    kVK_F9                        = 0x65,
+    kVK_F11                       = 0x67,
+    kVK_F13                       = 0x69,
+    kVK_F16                       = 0x6A,
+    kVK_F14                       = 0x6B,
+    kVK_F10                       = 0x6D,
+    kVK_F12                       = 0x6F,
+    kVK_F15                       = 0x71,
+    kVK_Help                      = 0x72,
+    kVK_Home                      = 0x73,
+    kVK_PageUp                    = 0x74,
+    kVK_ForwardDelete             = 0x75,
+    kVK_F4                        = 0x76,
+    kVK_End                       = 0x77,
+    kVK_F2                        = 0x78,
+    kVK_PageDown                  = 0x79,
+    kVK_F1                        = 0x7A,
+    kVK_LeftArrow                 = 0x7B,
+    kVK_RightArrow                = 0x7C,
+    kVK_DownArrow                 = 0x7D,
+    kVK_UpArrow                   = 0x7E
+};
+
+static char g_keycodeCharUnshifted[256] = {};
+static char g_keycodeCharShifted[256] = {};
+
+//static double       g_Time = 0.0f;
+static bool         g_MousePressed[3] = { false, false, false };
+static float        g_mouseWheelX = 0.0f;
+static float        g_mouseWheelY = 0.0f;
+
+static GLuint       g_FontTexture = 0;
+static int          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 size_t       g_VboSize = 0;
+static unsigned int g_VboHandle = 0, g_VaoHandle = 0;
+static float        g_displayScale;
+
+static int usynergy_sockfd;
+static bool g_synergyPtrActive = false;
+static uint16_t g_mousePosX = 0;
+static uint16_t g_mousePosY = 0;
+
+static void ImGui_ImplIOS_RenderDrawLists (ImDrawData *draw_data);
+bool ImGui_ImplIOS_CreateDeviceObjects();
+
+static NSString *g_serverName;
+
+uSynergyBool ImGui_ConnectFunc(uSynergyCookie cookie)
+{
+    // NOTE: You need to turn off "Use SSL Encryption" in Synergy preferences, since
+    // uSynergy does not support SSL.
+    
+    NSLog( @"Connect Func!");
+    struct addrinfo hints, *res;
+    
+    // first, load up address structs with getaddrinfo():
+    memset(&hints, 0, sizeof hints);
+    hints.ai_family = AF_UNSPEC;  // use IPv4 or IPv6, whichever
+    hints.ai_socktype = SOCK_STREAM;
+    
+    // get server address
+    getaddrinfo([g_serverName UTF8String], "24800", &hints, &res);
+    
+    if (!res)
+    {
+        NSLog( @"Could not find server: %@", g_serverName );
+        return USYNERGY_FALSE;
+    }
+    
+    // make a socket:
+    usynergy_sockfd = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+    
+    // connect it to the address and port we passed in to getaddrinfo():
+    int ret = connect(usynergy_sockfd, res->ai_addr, res->ai_addrlen);
+    if (!ret) {
+        NSLog( @"Connect suceeded...");
+    } else {
+        NSLog( @"Connect failed, %d", ret );
+    }
+    
+    
+    return USYNERGY_TRUE;
+}
+
+uSynergyBool ImGui_SendFunc(uSynergyCookie cookie, const uint8_t *buffer, int length)
+{
+//    NSLog( @"Send Func" );
+    send( usynergy_sockfd, buffer, length, 0 );
+    
+    return USYNERGY_TRUE;
+}
+
+uSynergyBool ImGui_RecvFunc(uSynergyCookie cookie, uint8_t *buffer, int maxLength, int* outLength)
+{
+    *outLength = (int)recv( usynergy_sockfd, buffer, maxLength, 0 );
+    
+    return USYNERGY_TRUE;
+}
+
+void ImGui_SleepFunc(uSynergyCookie cookie, int timeMs)
+{
+    usleep( timeMs * 1000 );
+}
+
+uint32_t ImGui_GetTimeFunc()
+{
+    struct timeval  tv;
+    gettimeofday(&tv, NULL);
+    
+    return (int32_t)((tv.tv_sec) * 1000 + (tv.tv_usec) / 1000);
+}
+
+void ImGui_TraceFunc(uSynergyCookie cookie, const char *text)
+{
+    puts(text);
+}
+
+void ImGui_ScreenActiveCallback(uSynergyCookie cookie, uSynergyBool active)
+{
+    g_synergyPtrActive = active;
+//    printf( "Synergy: screen activate %s\n", active?"YES":"NO" );
+}
+
+void ImGui_MouseCallback(uSynergyCookie cookie, uint16_t x, uint16_t y, int16_t wheelX, int16_t wheelY,
+                         uSynergyBool buttonLeft, uSynergyBool buttonRight, uSynergyBool buttonMiddle)
+{
+//    printf("Synergy: mouse callback %d %d -- wheel %d %d\n", x, y,  wheelX, wheelY );
+    uSynergyContext *ctx = (uSynergyContext*)cookie;
+    g_mousePosX = x;
+    g_mousePosY = y;
+    g_mouseWheelX = wheelX;
+    g_mouseWheelY = wheelY;
+    g_MousePressed[0] = buttonLeft;
+    g_MousePressed[1] = buttonMiddle;
+    g_MousePressed[2] = buttonRight;
+    
+    ctx->m_mouseWheelX = 0;
+    ctx->m_mouseWheelY = 0;
+}
+
+void ImGui_KeyboardCallback(uSynergyCookie cookie, uint16_t key,
+                            uint16_t modifiers, uSynergyBool down, uSynergyBool repeat)
+{
+    int scanCode = key-1;
+//    printf("Synergy: keyboard callback: 0x%02X (%s)", scanCode, down?"true":"false");
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeysDown[key] = down;
+    io.KeyShift = (modifiers & USYNERGY_MODIFIER_SHIFT);
+    io.KeyCtrl = (modifiers & USYNERGY_MODIFIER_CTRL);
+    io.KeyAlt = (modifiers & USYNERGY_MODIFIER_ALT);
+    io.KeySuper = (modifiers & USYNERGY_MODIFIER_WIN);
+    
+    // Add this as keyboard input
+    if ((down) && (key) && (scanCode<256) && !(modifiers & USYNERGY_MODIFIER_CTRL)) 
+	{
+        // If this key maps to a character input, apply it
+        int charForKeycode = (modifiers & USYNERGY_MODIFIER_SHIFT) ? g_keycodeCharShifted[scanCode] : g_keycodeCharUnshifted[scanCode];
+        io.AddInputCharacter((unsigned short)charForKeycode);
+    }
+    
+}
+
+void ImGui_JoystickCallback(uSynergyCookie cookie, uint8_t joyNum, uint16_t buttons, int8_t leftStickX, int8_t leftStickY, int8_t rightStickX, int8_t rightStickY)
+{
+    printf("Synergy: joystick callback TODO\n");
+}
+
+void ImGui_ClipboardCallback(uSynergyCookie cookie, enum uSynergyClipboardFormat format, const uint8_t *data, uint32_t size)
+{
+    printf("Synergy: clipboard callback TODO\n" );
+}
+
+
+@interface ImGuiHelper ()
+{
+    BOOL _mouseDown;
+    BOOL _mouseTapped;
+    CGPoint _touchPos;
+
+    uSynergyContext _synergyCtx;
+    dispatch_queue_t _synergyQueue;
+}
+@property (nonatomic, weak) UIView *view;
+@property (nonatomic, strong) NSString *serverName;
+
+@end
+
+@implementation ImGuiHelper
+
+- (id) initWithView: (UIView *)view
+{
+    self = [super init];
+    if (self)
+    {
+        self.view = view;
+
+        [self setupImGuiHooks];
+    }
+    return self;
+}
+
+- (void)setupKeymaps
+{
+    // The keyboard mapping is a big headache. I tried for a while to find a better way to do this,
+    // but this was the best I could come up with. There are some device independent API's available
+    // to convert scan codes to unicode characters, but these are only available on mac and not
+    // on iOS as far as I can tell (it's part of Carbon). I didn't see any better way to do
+    // this or  any way to get the character codes out of usynergy.
+    g_keycodeCharUnshifted[ kVK_ANSI_A ]='a';
+    g_keycodeCharUnshifted[ kVK_ANSI_S ]='s';
+    g_keycodeCharUnshifted[ kVK_ANSI_D ]='d';
+    g_keycodeCharUnshifted[ kVK_ANSI_F ]='f';
+    g_keycodeCharUnshifted[ kVK_ANSI_H ]='h';
+    g_keycodeCharUnshifted[ kVK_ANSI_G ]='g';
+    g_keycodeCharUnshifted[ kVK_ANSI_Z ]='z';
+    g_keycodeCharUnshifted[ kVK_ANSI_X ]='x';
+    g_keycodeCharUnshifted[ kVK_ANSI_C ]='c';
+    g_keycodeCharUnshifted[ kVK_ANSI_V ]='v';
+    g_keycodeCharUnshifted[ kVK_ANSI_B ]='b';
+    g_keycodeCharUnshifted[ kVK_ANSI_Q ]='q';
+    g_keycodeCharUnshifted[ kVK_ANSI_W ]='w';
+    g_keycodeCharUnshifted[ kVK_ANSI_E ]='e';
+    g_keycodeCharUnshifted[ kVK_ANSI_R ]='r';
+    g_keycodeCharUnshifted[ kVK_ANSI_Y ]='y';
+    g_keycodeCharUnshifted[ kVK_ANSI_T ]='t';
+    g_keycodeCharUnshifted[ kVK_ANSI_1 ]='1';
+    g_keycodeCharUnshifted[ kVK_ANSI_2 ]='2';
+    g_keycodeCharUnshifted[ kVK_ANSI_3 ]='3';
+    g_keycodeCharUnshifted[ kVK_ANSI_4 ]='4';
+    g_keycodeCharUnshifted[ kVK_ANSI_6 ]='6';
+    g_keycodeCharUnshifted[ kVK_ANSI_5 ]='5';
+    g_keycodeCharUnshifted[ kVK_ANSI_Equal ]='=';
+    g_keycodeCharUnshifted[ kVK_ANSI_9 ]='9';
+    g_keycodeCharUnshifted[ kVK_ANSI_7 ]='7';
+    g_keycodeCharUnshifted[ kVK_ANSI_Minus ]='-';
+    g_keycodeCharUnshifted[ kVK_ANSI_8 ]='8';
+    g_keycodeCharUnshifted[ kVK_ANSI_0 ]='0';
+    g_keycodeCharUnshifted[ kVK_ANSI_RightBracket ]=']';
+    g_keycodeCharUnshifted[ kVK_ANSI_O ]='o';
+    g_keycodeCharUnshifted[ kVK_ANSI_U ]='u';
+    g_keycodeCharUnshifted[ kVK_ANSI_LeftBracket ]='[';
+    g_keycodeCharUnshifted[ kVK_ANSI_I ]='i';
+    g_keycodeCharUnshifted[ kVK_ANSI_P ]='p';
+    g_keycodeCharUnshifted[ kVK_ANSI_L ]='l';
+    g_keycodeCharUnshifted[ kVK_ANSI_J ]='j';
+    g_keycodeCharUnshifted[ kVK_ANSI_Quote ]='\'';
+    g_keycodeCharUnshifted[ kVK_ANSI_K ]='k';
+    g_keycodeCharUnshifted[ kVK_ANSI_Semicolon ]=';';
+    g_keycodeCharUnshifted[ kVK_ANSI_Backslash ]='\\';
+    g_keycodeCharUnshifted[ kVK_ANSI_Comma ]=',';
+    g_keycodeCharUnshifted[ kVK_ANSI_Slash ]='/';
+    g_keycodeCharUnshifted[ kVK_ANSI_N ]='n';
+    g_keycodeCharUnshifted[ kVK_ANSI_M ]='m';
+    g_keycodeCharUnshifted[ kVK_ANSI_Period ]='.';
+    g_keycodeCharUnshifted[ kVK_ANSI_Grave ]='`';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadDecimal ]='.';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadMultiply ]='*';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadPlus ]='+';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadDivide ]='/';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadEnter ]='\n';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadMinus ]='-';
+    g_keycodeCharUnshifted[ kVK_ANSI_KeypadEquals ]='=';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad0 ]='0';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad1 ]='1';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad2 ]='2';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad3 ]='3';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad4 ]='4';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad5 ]='5';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad6 ]='6';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad7 ]='7';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad8 ]='8';
+    g_keycodeCharUnshifted[ kVK_ANSI_Keypad9 ]='9';
+    g_keycodeCharUnshifted[ kVK_Space ]=' ';
+    
+    g_keycodeCharShifted[ kVK_ANSI_A ]='A';
+    g_keycodeCharShifted[ kVK_ANSI_S ]='S';
+    g_keycodeCharShifted[ kVK_ANSI_D ]='D';
+    g_keycodeCharShifted[ kVK_ANSI_F ]='F';
+    g_keycodeCharShifted[ kVK_ANSI_H ]='H';
+    g_keycodeCharShifted[ kVK_ANSI_G ]='G';
+    g_keycodeCharShifted[ kVK_ANSI_Z ]='Z';
+    g_keycodeCharShifted[ kVK_ANSI_X ]='X';
+    g_keycodeCharShifted[ kVK_ANSI_C ]='C';
+    g_keycodeCharShifted[ kVK_ANSI_V ]='V';
+    g_keycodeCharShifted[ kVK_ANSI_B ]='B';
+    g_keycodeCharShifted[ kVK_ANSI_Q ]='Q';
+    g_keycodeCharShifted[ kVK_ANSI_W ]='W';
+    g_keycodeCharShifted[ kVK_ANSI_E ]='E';
+    g_keycodeCharShifted[ kVK_ANSI_R ]='R';
+    g_keycodeCharShifted[ kVK_ANSI_Y ]='Y';
+    g_keycodeCharShifted[ kVK_ANSI_T ]='T';
+    g_keycodeCharShifted[ kVK_ANSI_1 ]='!';
+    g_keycodeCharShifted[ kVK_ANSI_2 ]='@';
+    g_keycodeCharShifted[ kVK_ANSI_3 ]='#';
+    g_keycodeCharShifted[ kVK_ANSI_4 ]='$';
+    g_keycodeCharShifted[ kVK_ANSI_6 ]='^';
+    g_keycodeCharShifted[ kVK_ANSI_5 ]='%';
+    g_keycodeCharShifted[ kVK_ANSI_Equal ]='+';
+    g_keycodeCharShifted[ kVK_ANSI_9 ]='(';
+    g_keycodeCharShifted[ kVK_ANSI_7 ]='&';
+    g_keycodeCharShifted[ kVK_ANSI_Minus ]='_';
+    g_keycodeCharShifted[ kVK_ANSI_8 ]='*';
+    g_keycodeCharShifted[ kVK_ANSI_0 ]=')';
+    g_keycodeCharShifted[ kVK_ANSI_RightBracket ]='}';
+    g_keycodeCharShifted[ kVK_ANSI_O ]='O';
+    g_keycodeCharShifted[ kVK_ANSI_U ]='U';
+    g_keycodeCharShifted[ kVK_ANSI_LeftBracket ]='{';
+    g_keycodeCharShifted[ kVK_ANSI_I ]='I';
+    g_keycodeCharShifted[ kVK_ANSI_P ]='P';
+    g_keycodeCharShifted[ kVK_ANSI_L ]='L';
+    g_keycodeCharShifted[ kVK_ANSI_J ]='J';
+    g_keycodeCharShifted[ kVK_ANSI_Quote ]='\"';
+    g_keycodeCharShifted[ kVK_ANSI_K ]='K';
+    g_keycodeCharShifted[ kVK_ANSI_Semicolon ]=':';
+    g_keycodeCharShifted[ kVK_ANSI_Backslash ]='|';
+    g_keycodeCharShifted[ kVK_ANSI_Comma ]='<';
+    g_keycodeCharShifted[ kVK_ANSI_Slash ]='?';
+    g_keycodeCharShifted[ kVK_ANSI_N ]='N';
+    g_keycodeCharShifted[ kVK_ANSI_M ]='M';
+    g_keycodeCharShifted[ kVK_ANSI_Period ]='>';
+    g_keycodeCharShifted[ kVK_ANSI_Grave ]='~';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadDecimal ]='.';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadMultiply ]='*';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadPlus ]='+';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadDivide ]='/';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadEnter ]='\n';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadMinus ]='-';
+    g_keycodeCharShifted[ kVK_ANSI_KeypadEquals ]='=';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad0 ]='0';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad1 ]='1';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad2 ]='2';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad3 ]='3';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad4 ]='4';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad5 ]='5';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad6 ]='6';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad7 ]='7';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad8 ]='8';
+    g_keycodeCharShifted[ kVK_ANSI_Keypad9 ]='9';
+    g_keycodeCharShifted[ kVK_Space ]=' ';
+}
+
+- (void)setupImGuiHooks
+{
+    ImGuiIO &io = ImGui::GetIO();
+    
+    [self setupKeymaps];
+    
+    // Account for retina display for glScissor
+    g_displayScale = [[UIScreen mainScreen] scale];
+    
+    ImGuiStyle &style = ImGui::GetStyle();
+    style.TouchExtraPadding = ImVec2( 4.0, 4.0 );
+    
+    io.RenderDrawListsFn = ImGui_ImplIOS_RenderDrawLists;
+    
+    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(viewDidPan:) ];
+    [self.view addGestureRecognizer:panRecognizer];
+    
+    UITapGestureRecognizer *tapRecoginzer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector( viewDidTap:)];
+    [self.view addGestureRecognizer:tapRecoginzer];
+    
+    // Fill out the Synergy key map
+    // (for some reason synergy scan codes are off by 1)
+    io.KeyMap[ImGuiKey_Tab] = kVK_Tab+1;
+    io.KeyMap[ImGuiKey_LeftArrow] = kVK_LeftArrow+1;
+    io.KeyMap[ImGuiKey_RightArrow] = kVK_RightArrow+1;
+    io.KeyMap[ImGuiKey_UpArrow] = kVK_UpArrow+1;
+    io.KeyMap[ImGuiKey_DownArrow] = kVK_DownArrow+1;
+    io.KeyMap[ImGuiKey_Home] = kVK_Home+1;
+    io.KeyMap[ImGuiKey_End] = kVK_End+1;
+    io.KeyMap[ImGuiKey_Delete] = kVK_ForwardDelete+1;
+    io.KeyMap[ImGuiKey_Backspace] = kVK_Delete+1;
+    io.KeyMap[ImGuiKey_Enter] = kVK_Return+1;
+    io.KeyMap[ImGuiKey_Escape] = kVK_Escape+1;
+    io.KeyMap[ImGuiKey_A] = kVK_ANSI_A+1;
+    io.KeyMap[ImGuiKey_C] = kVK_ANSI_C+1;
+    io.KeyMap[ImGuiKey_V] = kVK_ANSI_V+1;
+    io.KeyMap[ImGuiKey_X] = kVK_ANSI_X+1;
+    io.KeyMap[ImGuiKey_Y] = kVK_ANSI_Y+1;
+    io.KeyMap[ImGuiKey_Z] = kVK_ANSI_Z+1;
+}
+
+- (void)connectServer: (NSString*)serverName
+{
+    self.serverName = serverName;
+    g_serverName = serverName;
+    
+    // Init synergy
+    NSString *bundleName = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleNameKey];
+    
+    uSynergyInit( &_synergyCtx );
+    _synergyCtx.m_clientName = strdup( [bundleName UTF8String] );
+    _synergyCtx.m_clientWidth = self.view.bounds.size.width;
+    _synergyCtx.m_clientHeight = self.view.bounds.size.height;
+    
+    _synergyCtx.m_connectFunc = ImGui_ConnectFunc;
+    _synergyCtx.m_sendFunc = ImGui_SendFunc;
+    _synergyCtx.m_receiveFunc = ImGui_RecvFunc;
+    _synergyCtx.m_sleepFunc = ImGui_SleepFunc;
+    _synergyCtx.m_traceFunc = ImGui_TraceFunc;
+    _synergyCtx.m_getTimeFunc = ImGui_GetTimeFunc;
+    
+    _synergyCtx.m_traceFunc = ImGui_TraceFunc;
+    _synergyCtx.m_screenActiveCallback = ImGui_ScreenActiveCallback;
+    _synergyCtx.m_mouseCallback = ImGui_MouseCallback;
+    _synergyCtx.m_keyboardCallback = ImGui_KeyboardCallback;
+    
+    _synergyCtx.m_cookie = (uSynergyCookie)&_synergyCtx;
+    
+    // Create a background thread for synergy
+    _synergyQueue = dispatch_queue_create( "imgui-usynergy", NULL );
+    dispatch_async( _synergyQueue, ^{
+        while (1) {
+            uSynergyUpdate( &_synergyCtx );
+        }
+    });
+}
+
+
+- (void)viewDidPan: (UIPanGestureRecognizer *)recognizer
+{
+    
+    if ((recognizer.state == UIGestureRecognizerStateBegan) ||
+        (recognizer.state == UIGestureRecognizerStateChanged))
+    {
+        _mouseDown = YES;
+        _touchPos = [recognizer locationInView:self.view];
+    }
+    else
+    {
+        _mouseDown = NO;
+        _touchPos = CGPointMake( -1, -1 );
+    }
+}
+
+- (void)viewDidTap: (UITapGestureRecognizer*)recognizer
+{
+    _touchPos = [recognizer locationInView:self.view];
+    _mouseTapped = YES;
+}
+    
+- (void)render
+{
+    ImGui::Render();
+}
+
+- (void)newFrame
+{
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiStyle &style = ImGui::GetStyle();
+    
+    if (!g_FontTexture)
+    {
+        ImGui_ImplIOS_CreateDeviceObjects();
+    }
+    
+    io.DisplaySize = ImVec2( _view.bounds.size.width, _view.bounds.size.height );
+
+    io.MouseDrawCursor = g_synergyPtrActive;
+    if (g_synergyPtrActive)
+    {
+        style.TouchExtraPadding = ImVec2( 0.0, 0.0 );
+        io.MousePos = ImVec2( g_mousePosX, g_mousePosY );
+        for (int i=0; i < 3; i++)
+        {
+            io.MouseDown[i] = g_MousePressed[i];
+        }
+
+        // This is an arbitrary scaling factor that works for me. Not sure what units these
+        // mousewheel values from synergy are supposed to be in
+        io.MouseWheel = g_mouseWheelY / 500.0;
+    }
+    else
+    {
+        // Synergy not active, use touch events
+        style.TouchExtraPadding = ImVec2( 4.0, 4.0 );
+        io.MousePos = ImVec2(_touchPos.x, _touchPos.y );
+        if ((_mouseDown) || (_mouseTapped))
+        {
+            io.MouseDown[0] = true;
+            _mouseTapped = NO;
+        }
+        else
+        {
+            io.MouseDown[0] = false;
+        }
+    }
+    
+    ImGui::NewFrame();
+}
+@end
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+// If text or lines are blurry when integrating ImGui in your engine:
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+// NOTE: this is copied pretty much entirely from the opengl3_example, with only minor changes for ES
+static void ImGui_ImplIOS_RenderDrawLists (ImDrawData *draw_data)
+{
+    // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled
+    GLint last_program, last_texture;
+    glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glEnable(GL_BLEND);
+    glBlendEquation(GL_FUNC_ADD);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glEnable(GL_SCISSOR_TEST);
+    glActiveTexture(GL_TEXTURE0);
+    
+    // Setup orthographic projection matrix
+    const float width = ImGui::GetIO().DisplaySize.x;
+    const float height = ImGui::GetIO().DisplaySize.y;
+    const float ortho_projection[4][4] =
+    {
+        { 2.0f/width,	0.0f,			0.0f,		0.0f },
+        { 0.0f,			2.0f/-height,	0.0f,		0.0f },
+        { 0.0f,			0.0f,			-1.0f,		0.0f },
+        { -1.0f,		1.0f,			0.0f,		1.0f },
+    };
+    glUseProgram(g_ShaderHandle);
+    glUniform1i(g_AttribLocationTex, 0);
+    glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
+    glBindVertexArray(g_VaoHandle);
+    
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        ImDrawList* cmd_list = draw_data->CmdLists[n];
+        ImDrawIdx* idx_buffer = &cmd_list->IdxBuffer.front();
+        
+        glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+        int needed_vtx_size = cmd_list->VtxBuffer.size() * sizeof(ImDrawVert);
+        if (g_VboSize < needed_vtx_size)
+        {
+            // Grow our buffer if needed
+            g_VboSize = needed_vtx_size + 2000 * sizeof(ImDrawVert);
+            glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)g_VboSize, NULL, GL_STREAM_DRAW);
+        }
+
+        unsigned char* vtx_data = (unsigned char*)glMapBufferRange(GL_ARRAY_BUFFER, 0, needed_vtx_size, GL_MAP_WRITE_BIT | GL_MAP_INVALIDATE_BUFFER_BIT);
+        if (!vtx_data)
+            continue;
+        memcpy(vtx_data, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
+        glUnmapBuffer(GL_ARRAY_BUFFER);
+        
+        for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != cmd_list->CmdBuffer.end(); pcmd++)
+        {
+            if (pcmd->UserCallback)
+            {
+                pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+                glScissor((int)(pcmd->ClipRect.x * g_displayScale),
+                          (int)((height - pcmd->ClipRect.w) * g_displayScale),
+                          (int)((pcmd->ClipRect.z - pcmd->ClipRect.x) * g_displayScale),
+                          (int)((pcmd->ClipRect.w - pcmd->ClipRect.y) * g_displayScale));
+                glDrawElements( GL_TRIANGLES, (GLsizei)pcmd->ElemCount, GL_UNSIGNED_SHORT, idx_buffer );
+            }
+            idx_buffer += pcmd->ElemCount;
+        }
+    }
+    
+    // Restore modified state
+    glBindVertexArray(0);
+    glBindBuffer( GL_ARRAY_BUFFER, 0);
+    glEnable(GL_CULL_FACE);
+    glEnable(GL_DEPTH_TEST);
+    glUseProgram(last_program);
+    glDisable(GL_SCISSOR_TEST);
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+}
+
+void ImGui_ImplIOS_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
+    
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGenTextures(1, &g_FontTexture);
+    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);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+    
+    // Store our identifier
+    io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
+
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+}
+
+bool ImGui_ImplIOS_CreateDeviceObjects()
+{
+    const GLchar *vertex_shader =
+    "uniform mat4 ProjMtx;\n"
+    "attribute highp vec2 Position;\n"
+    "attribute highp vec2 UV;\n"
+    "attribute highp vec4 Color;\n"
+    "varying vec2 Frag_UV;\n"
+    "varying vec4 Frag_Color;\n"
+    "void main()\n"
+    "{\n"
+    "	Frag_UV = UV;\n"
+    "	Frag_Color = Color;\n"
+    "	gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+    "}\n";
+    
+    const GLchar* fragment_shader =
+    "uniform sampler2D Texture;\n"
+    "varying highp vec2 Frag_UV;\n"
+    "varying highp vec4 Frag_Color;\n"
+    "void main()\n"
+    "{\n"
+    "	gl_FragColor = Frag_Color * texture2D( Texture, Frag_UV.st);\n"
+    "}\n";
+    
+    g_ShaderHandle = glCreateProgram();
+    g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
+    g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(g_VertHandle, 1, &vertex_shader, 0);
+    glShaderSource(g_FragHandle, 1, &fragment_shader, 0);
+    glCompileShader(g_VertHandle);
+    
+#if defined(DEBUG)
+    GLint logLength;
+    glGetShaderiv( g_VertHandle, GL_INFO_LOG_LENGTH, &logLength);
+    if (logLength > 0) {
+        GLchar *log = (GLchar *)malloc(logLength);
+        glGetShaderInfoLog(g_VertHandle, logLength, &logLength, log);
+        NSLog(@"VERTEX Shader compile log:\n%s", log);
+        free(log);
+    }
+#endif
+    
+    glCompileShader(g_FragHandle);
+    
+#if defined(DEBUG)
+    glGetShaderiv( g_FragHandle, GL_INFO_LOG_LENGTH, &logLength);
+    if (logLength > 0) {
+        GLchar *log = (GLchar *)malloc(logLength);
+        glGetShaderInfoLog(g_FragHandle, logLength, &logLength, log);
+        NSLog(@"FRAGMENT Shader compile log:\n%s", log);
+        free(log);
+    }
+#endif
+    
+    glAttachShader(g_ShaderHandle, g_VertHandle);
+    glAttachShader(g_ShaderHandle, g_FragHandle);
+    glLinkProgram(g_ShaderHandle);
+    
+    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");
+    
+    glGenBuffers(1, &g_VboHandle);
+    
+    glGenVertexArrays(1, &g_VaoHandle);
+    glBindVertexArray(g_VaoHandle);
+    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+    glEnableVertexAttribArray(g_AttribLocationPosition);
+    glEnableVertexAttribArray(g_AttribLocationUV);
+    glEnableVertexAttribArray(g_AttribLocationColor);
+    
+#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
+    glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, pos));
+    glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv));
+    glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col));
+#undef OFFSETOF
+    glBindVertexArray(0);
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+    
+    ImGui_ImplIOS_CreateFontsTexture();
+    
+    return true;
+}

examples/apple_example/imguiex-ios/main.m

@@ -0,0 +1,13 @@
+//
+//  main.m
+//  imguiex
+//
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+    @autoreleasepool {
+        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+    }
+}

examples/apple_example/imguiex-osx/AppDelegate.h

@@ -0,0 +1,15 @@
+//
+//  AppDelegate.h
+//  imguiex-osx
+//
+//  Created by James Chen on 4/5/16.
+//  Copyright © 2016 Joel Davis. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+@interface AppDelegate : NSObject <NSApplicationDelegate>
+
+
+@end
+

examples/apple_example/imguiex-osx/AppDelegate.m

@@ -0,0 +1,26 @@
+//
+//  AppDelegate.m
+//  imguiex-osx
+//
+//  Created by James Chen on 4/5/16.
+//  Copyright © 2016 Joel Davis. All rights reserved.
+//
+
+#import "AppDelegate.h"
+
+@interface AppDelegate ()
+
+@property (weak) IBOutlet NSWindow *window;
+@end
+
+@implementation AppDelegate
+
+- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
+    // Insert code here to initialize your application
+}
+
+- (void)applicationWillTerminate:(NSNotification *)aNotification {
+    // Insert code here to tear down your application
+}
+
+@end

examples/apple_example/imguiex-osx/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,64 @@
+{
+  "images" : [
+    {
+      "idiom" : "mac",
+      "size" : "16x16",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "16x16",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "32x32",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "32x32",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "128x128",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "128x128",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "256x256",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "256x256",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "512x512",
+      "scale" : "1x"
+    },
+    {
+      "size" : "512x512",
+      "idiom" : "mac",
+      "filename" : "icon_imgui_180x180.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "mac",
+      "size" : "512x512",
+      "scale" : "2x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

examples/apple_example/imguiex-osx/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

examples/apple_example/imguiex-osx/Info.plist

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>en</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>$(PRODUCT_NAME)</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright © 2016 Joel Davis. All rights reserved.</string>
+	<key>NSMainNibFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

examples/apple_example/imguiex-osx/main.m

@@ -0,0 +1,13 @@
+//
+//  main.m
+//  imguiex-osx
+//
+//  Created by James Chen on 4/5/16.
+//  Copyright © 2016 Joel Davis. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+int main(int argc, const char * argv[]) {
+    return NSApplicationMain(argc, argv);
+}

examples/apple_example/imguiex.xcodeproj/project.pbxproj

@@ -0,0 +1,539 @@
+// !$*UTF8*$!
+{
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+			buildActionMask = 2147483647;
+			files = (
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+/* End PBXFrameworksBuildPhase section */
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+			children = (
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+				1A1A0F211CB39FB50090F036 /* AppDelegate.h */,
+				1A1A0F221CB39FB50090F036 /* AppDelegate.m */,
+				1A1A0F271CB39FB50090F036 /* Assets.xcassets */,
+				1A1A0F2C1CB39FB50090F036 /* Info.plist */,
+				1A1A0F241CB39FB50090F036 /* Supporting Files */,
+			);
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+			sourceTree = "<group>";
+		};
+		1A1A0F241CB39FB50090F036 /* Supporting Files */ = {
+			isa = PBXGroup;
+			children = (
+			);
+			name = "Supporting Files";
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
+				1A1A0F371CB3A1B20090F036 /* imgui_impl_glfw.cpp */,
+				1A1A0F381CB3A1B20090F036 /* imgui_impl_glfw.h */,
+				1A1A0F391CB3A1B20090F036 /* main.cpp */,
+			);
+			name = opengl_example;
+			path = ../../opengl_example;
+			sourceTree = "<group>";
+		};
+		6D1E39141B35EEF10017B40F /* usynergy */ = {
+			isa = PBXGroup;
+			children = (
+				6D1E39151B35EEF10017B40F /* uSynergy.c */,
+				6D1E39161B35EEF10017B40F /* uSynergy.h */,
+			);
+			name = usynergy;
+			path = ../libs/usynergy;
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
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+				6D2FC5841B2E648D00C130BA /* imgui */,
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+				1A1A0F201CB39FB50090F036 /* imguiex-osx */,
+				6D2FC5551B2E632000C130BA /* Products */,
+			);
+			sourceTree = "<group>";
+		};
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+			isa = PBXGroup;
+			children = (
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+				1A1A0F1F1CB39FB50090F036 /* imguiex-osx.app */,
+			);
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+			sourceTree = "<group>";
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+			children = (
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+				6D2FC55C1B2E632000C130BA /* AppDelegate.m */,
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+				6D2FC5601B2E632000C130BA /* Shader.vsh */,
+				6D2FC5621B2E632000C130BA /* GameViewController.h */,
+				6D2FC5631B2E632000C130BA /* GameViewController.m */,
+				6D2FC5651B2E632000C130BA /* Main.storyboard */,
+				6D2FC5681B2E632000C130BA /* Images.xcassets */,
+				6D2FC56A1B2E632000C130BA /* LaunchScreen.xib */,
+				6D2FC5571B2E632000C130BA /* Supporting Files */,
+			);
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+			sourceTree = "<group>";
+		};
+		6D2FC5571B2E632000C130BA /* Supporting Files */ = {
+			isa = PBXGroup;
+			children = (
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+				6D2FC5901B30773F00C130BA /* CFNetwork.framework */,
+				6D2FC5581B2E632000C130BA /* Info.plist */,
+				6D2FC5591B2E632000C130BA /* main.m */,
+			);
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+		6D2FC5841B2E648D00C130BA /* imgui */ = {
+			isa = PBXGroup;
+			children = (
+				6D2FC5851B2E64AB00C130BA /* imconfig.h */,
+				197E1E861B8943FE00E3FE6A /* imgui_draw.cpp */,
+				6D2FC5861B2E64AB00C130BA /* imgui.cpp */,
+				6D2FC5871B2E64AB00C130BA /* imgui.h */,
+			);
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+			sourceTree = "<group>";
+		};
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examples/directx10_example/build_win32.bat

@@ -0,0 +1,4 @@
+@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 "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include" /D UNICODE /D _UNICODE *.cpp ..\..\*.cpp /FeDebug/directx10_example.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d10.lib d3dcompiler.lib
+

examples/directx10_example/directx10_example.vcxproj

@@ -0,0 +1,159 @@
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+    <ProjectConfiguration Include="Release|Win32">
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+      <Platform>Win32</Platform>
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+    <ProjectConfiguration Include="Release|x64">
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+    <IntDir>$(ProjectDir)$(Configuration)\</IntDir>
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+      <OptimizeReferences>true</OptimizeReferences>
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+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+  </ItemDefinitionGroup>
+  <ItemGroup>
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+    <ClInclude Include="..\..\imgui.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
+    <ClInclude Include="imgui_impl_dx10.h" />
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+    <None Include="..\README.txt" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

examples/directx10_example/directx10_example.vcxproj.filters

@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="imgui">
+      <UniqueIdentifier>{0587d7a3-f2ce-4d56-b84f-a0005d3bfce6}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="sources">
+      <UniqueIdentifier>{08e36723-ce4f-4cff-9662-c40801cf1acf}</UniqueIdentifier>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\imconfig.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\imgui.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+    <ClInclude Include="imgui_impl_dx10.h">
+      <Filter>sources</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\imgui.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="main.cpp">
+      <Filter>sources</Filter>
+    </ClCompile>
+    <ClCompile Include="imgui_impl_dx10.cpp">
+      <Filter>sources</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
+  </ItemGroup>
+</Project>

examples/directx10_example/imgui_impl_dx10.cpp

@@ -0,0 +1,553 @@
+// ImGui Win32 + DirectX10 binding
+// In this binding, ImTextureID is used to store a 'ID3D10ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#include "imgui.h"
+#include "imgui_impl_dx10.h"
+
+// DirectX
+#include <d3d10_1.h>
+#include <d3d10.h>
+#include <d3dcompiler.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+
+// Data
+static INT64                    g_Time = 0;
+static INT64                    g_TicksPerSecond = 0;
+
+static HWND                     g_hWnd = 0;
+static ID3D10Device*            g_pd3dDevice = NULL;
+static ID3D10Buffer*            g_pVB = NULL;
+static ID3D10Buffer*            g_pIB = NULL;
+static ID3D10Blob *             g_pVertexShaderBlob = NULL;
+static ID3D10VertexShader*      g_pVertexShader = NULL;
+static ID3D10InputLayout*       g_pInputLayout = NULL;
+static ID3D10Buffer*            g_pVertexConstantBuffer = NULL;
+static ID3D10Blob *             g_pPixelShaderBlob = NULL;
+static ID3D10PixelShader*       g_pPixelShader = NULL;
+static ID3D10SamplerState*      g_pFontSampler = NULL;
+static ID3D10ShaderResourceView*g_pFontTextureView = NULL;
+static ID3D10RasterizerState*   g_pRasterizerState = NULL;
+static ID3D10BlendState*        g_pBlendState = NULL;
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
+
+struct VERTEX_CONSTANT_BUFFER
+{
+    float        mvp[4][4];
+};
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+// If text or lines are blurry when integrating ImGui in your engine:
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+void ImGui_ImplDX10_RenderDrawLists(ImDrawData* draw_data)
+{
+    ID3D10Device* ctx = g_pd3dDevice;
+
+    // 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;
+        D3D10_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D10_BUFFER_DESC));
+        desc.Usage = D3D10_USAGE_DYNAMIC;
+        desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert);
+        desc.BindFlags = D3D10_BIND_VERTEX_BUFFER;
+        desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
+        desc.MiscFlags = 0;
+        if (ctx->CreateBuffer(&desc, NULL, &g_pVB) < 0)
+            return;
+    }
+
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        D3D10_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D10_BUFFER_DESC));
+        desc.Usage = D3D10_USAGE_DYNAMIC;
+        desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx);
+        desc.BindFlags = D3D10_BIND_INDEX_BUFFER;
+        desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
+        if (ctx->CreateBuffer(&desc, NULL, &g_pIB) < 0)
+            return;
+    }
+
+    // Copy and convert all vertices into a single contiguous buffer
+    ImDrawVert* vtx_dst = NULL;
+    ImDrawIdx* idx_dst = NULL;
+    g_pVB->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**)&vtx_dst);
+    g_pIB->Map(D3D10_MAP_WRITE_DISCARD, 0, (void**)&idx_dst);
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
+        memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.size();
+        idx_dst += cmd_list->IdxBuffer.size();
+    }
+    g_pVB->Unmap();
+    g_pIB->Unmap();
+
+    // Setup orthographic projection matrix into our constant buffer
+    {
+        void* mapped_resource;
+        if (g_pVertexConstantBuffer->Map(D3D10_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
+            return;
+        VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource;
+        const float L = 0.0f;
+        const float R = ImGui::GetIO().DisplaySize.x;
+        const float B = ImGui::GetIO().DisplaySize.y;
+        const float T = 0.0f;
+        const float mvp[4][4] =
+        {
+            { 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 },
+            { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
+        };
+        memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
+        g_pVertexConstantBuffer->Unmap();
+    }
+
+    // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
+    struct BACKUP_DX10_STATE
+    {
+        UINT                        ScissorRectsCount, ViewportsCount;
+        D3D10_RECT                  ScissorRects[D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        D3D10_VIEWPORT              Viewports[D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        ID3D10RasterizerState*      RS;
+        ID3D10BlendState*           BlendState;
+        FLOAT                       BlendFactor[4];
+        UINT                        SampleMask;
+        ID3D10ShaderResourceView*   PSShaderResource;
+        ID3D10SamplerState*         PSSampler;
+        ID3D10PixelShader*          PS;
+        ID3D10VertexShader*         VS;
+        D3D10_PRIMITIVE_TOPOLOGY    PrimitiveTopology;
+        ID3D10Buffer*               IndexBuffer, *VertexBuffer, *VSConstantBuffer;
+        UINT                        IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
+        DXGI_FORMAT                 IndexBufferFormat;
+        ID3D10InputLayout*          InputLayout;
+    };
+    BACKUP_DX10_STATE old;
+    old.ScissorRectsCount = old.ViewportsCount = D3D10_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
+    ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
+    ctx->RSGetState(&old.RS);
+    ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
+    ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
+    ctx->PSGetSamplers(0, 1, &old.PSSampler);
+    ctx->PSGetShader(&old.PS);
+    ctx->VSGetShader(&old.VS);
+    ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
+    ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
+    ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
+    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)ImGui::GetIO().DisplaySize.x;
+    vp.Height = (UINT)ImGui::GetIO().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->RSSetState(g_pRasterizerState);
+
+    // Render command lists
+    int vtx_offset = 0;
+    int idx_offset = 0;
+    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)
+            {
+                pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                const D3D10_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
+                ctx->PSSetShaderResources(0, 1, (ID3D10ShaderResourceView**)&pcmd->TextureId);
+                ctx->RSSetScissorRects(1, &r);
+                ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
+            }
+            idx_offset += pcmd->ElemCount;
+        }
+        vtx_offset += cmd_list->VtxBuffer.size();
+    }
+
+    // Restore modified DX state
+    ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
+    ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
+    ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
+    ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
+    ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
+    ctx->PSSetShader(old.PS); if (old.PS) old.PS->Release();
+    ctx->VSSetShader(old.VS); if (old.VS) old.VS->Release();
+    ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
+    ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
+    ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
+    ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
+    ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
+}
+
+IMGUI_API LRESULT ImGui_ImplDX10_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    switch (msg)
+    {
+    case WM_LBUTTONDOWN:
+        io.MouseDown[0] = true;
+        return true;
+    case WM_LBUTTONUP:
+        io.MouseDown[0] = false;
+        return true;
+    case WM_RBUTTONDOWN:
+        io.MouseDown[1] = true;
+        return true;
+    case WM_RBUTTONUP:
+        io.MouseDown[1] = false;
+        return true;
+    case WM_MBUTTONDOWN:
+        io.MouseDown[2] = true;
+        return true;
+    case WM_MBUTTONUP:
+        io.MouseDown[2] = false;
+        return true;
+    case WM_MOUSEWHEEL:
+        io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
+        return true;
+    case WM_MOUSEMOVE:
+        io.MousePos.x = (signed short)(lParam);
+        io.MousePos.y = (signed short)(lParam >> 16);
+        return true;
+    case WM_KEYDOWN:
+        if (wParam < 256)
+            io.KeysDown[wParam] = 1;
+        return true;
+    case WM_KEYUP:
+        if (wParam < 256)
+            io.KeysDown[wParam] = 0;
+        return true;
+    case WM_CHAR:
+        // You can also use ToAscii()+GetKeyboardState() to retrieve characters.
+        if (wParam > 0 && wParam < 0x10000)
+            io.AddInputCharacter((unsigned short)wParam);
+        return true;
+    }
+    return 0;
+}
+
+static void ImGui_ImplDX10_CreateFontsTexture()
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Build
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Create DX10 texture
+    {
+        D3D10_TEXTURE2D_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Width = width;
+        desc.Height = height;
+        desc.MipLevels = 1;
+        desc.ArraySize = 1;
+        desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        desc.SampleDesc.Count = 1;
+        desc.Usage = D3D10_USAGE_DEFAULT;
+        desc.BindFlags = D3D10_BIND_SHADER_RESOURCE;
+        desc.CPUAccessFlags = 0;
+
+        ID3D10Texture2D *pTexture = NULL;
+        D3D10_SUBRESOURCE_DATA subResource;
+        subResource.pSysMem = pixels;
+        subResource.SysMemPitch = desc.Width * 4;
+        subResource.SysMemSlicePitch = 0;
+        g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
+
+        // Create texture view
+        D3D10_SHADER_RESOURCE_VIEW_DESC srv_desc;
+        ZeroMemory(&srv_desc, sizeof(srv_desc));
+        srv_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        srv_desc.ViewDimension = D3D10_SRV_DIMENSION_TEXTURE2D;
+        srv_desc.Texture2D.MipLevels = desc.MipLevels;
+        srv_desc.Texture2D.MostDetailedMip = 0;
+        g_pd3dDevice->CreateShaderResourceView(pTexture, &srv_desc, &g_pFontTextureView);
+        pTexture->Release();
+    }
+
+    // Store our identifier
+    io.Fonts->TexID = (void *)g_pFontTextureView;
+
+    // Create texture sampler
+    {
+        D3D10_SAMPLER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Filter = D3D10_FILTER_MIN_MAG_MIP_LINEAR;
+        desc.AddressU = D3D10_TEXTURE_ADDRESS_WRAP;
+        desc.AddressV = D3D10_TEXTURE_ADDRESS_WRAP;
+        desc.AddressW = D3D10_TEXTURE_ADDRESS_WRAP;
+        desc.MipLODBias = 0.f;
+        desc.ComparisonFunc = D3D10_COMPARISON_ALWAYS;
+        desc.MinLOD = 0.f;
+        desc.MaxLOD = 0.f;
+        g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
+    }
+
+    // Cleanup (don't clear the input data if you want to append new fonts later)
+    io.Fonts->ClearInputData();
+    io.Fonts->ClearTexData();
+}
+
+bool    ImGui_ImplDX10_CreateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return false;
+    if (g_pFontSampler)
+        ImGui_ImplDX10_InvalidateDeviceObjects();
+
+    // Create the vertex shader
+    {
+        static const char* vertexShader =
+            "cbuffer vertexBuffer : register(b0) \
+            {\
+            float4x4 ProjectionMatrix; \
+            };\
+            struct VS_INPUT\
+            {\
+            float2 pos : POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            \
+            struct PS_INPUT\
+            {\
+            float4 pos : SV_POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            \
+            PS_INPUT main(VS_INPUT input)\
+            {\
+            PS_INPUT output;\
+            output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+            output.col = input.col;\
+            output.uv  = input.uv;\
+            return output;\
+            }";
+
+        D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_0", 0, 0, &g_pVertexShaderBlob, NULL);
+        if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pVertexShader) != S_OK)
+            return false;
+
+        // Create the input 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 },
+            { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D10_INPUT_PER_VERTEX_DATA, 0 },
+        };
+        if (g_pd3dDevice->CreateInputLayout(local_layout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
+            return false;
+
+        // Create the constant buffer
+        {
+            D3D10_BUFFER_DESC desc;
+            desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
+            desc.Usage = D3D10_USAGE_DYNAMIC;
+            desc.BindFlags = D3D10_BIND_CONSTANT_BUFFER;
+            desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
+            desc.MiscFlags = 0;
+            g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVertexConstantBuffer);
+        }
+    }
+
+    // Create the pixel shader
+    {
+        static const char* pixelShader =
+            "struct PS_INPUT\
+            {\
+            float4 pos : SV_POSITION;\
+            float4 col : COLOR0;\
+            float2 uv  : TEXCOORD0;\
+            };\
+            sampler sampler0;\
+            Texture2D texture0;\
+            \
+            float4 main(PS_INPUT input) : SV_Target\
+            {\
+            float4 out_col = input.col * texture0.Sample(sampler0, input.uv); \
+            return out_col; \
+            }";
+
+        D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_0", 0, 0, &g_pPixelShaderBlob, NULL);
+        if (g_pPixelShaderBlob == NULL)  // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
+            return false;
+        if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), &g_pPixelShader) != S_OK)
+            return false;
+    }
+
+    // Create the blending setup
+    {
+        D3D10_BLEND_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.AlphaToCoverageEnable = false;
+        desc.BlendEnable[0] = true;
+        desc.SrcBlend = D3D10_BLEND_SRC_ALPHA;
+        desc.DestBlend = D3D10_BLEND_INV_SRC_ALPHA;
+        desc.BlendOp = D3D10_BLEND_OP_ADD;
+        desc.SrcBlendAlpha = D3D10_BLEND_INV_SRC_ALPHA;
+        desc.DestBlendAlpha = D3D10_BLEND_ZERO;
+        desc.BlendOpAlpha = D3D10_BLEND_OP_ADD;
+        desc.RenderTargetWriteMask[0] = D3D10_COLOR_WRITE_ENABLE_ALL;
+        g_pd3dDevice->CreateBlendState(&desc, &g_pBlendState);
+    }
+
+    // Create the rasterizer state
+    {
+        D3D10_RASTERIZER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.FillMode = D3D10_FILL_SOLID;
+        desc.CullMode = D3D10_CULL_NONE;
+        desc.ScissorEnable = true;
+        desc.DepthClipEnable = true;
+        g_pd3dDevice->CreateRasterizerState(&desc, &g_pRasterizerState);
+    }
+
+    ImGui_ImplDX10_CreateFontsTexture();
+
+    return true;
+}
+
+void    ImGui_ImplDX10_InvalidateDeviceObjects()
+{
+    if (!g_pd3dDevice)
+        return;
+
+    if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; }
+    if (g_pFontTextureView) { g_pFontTextureView->Release(); g_pFontTextureView = NULL; ImGui::GetIO().Fonts->TexID = 0; }
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+    if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+
+    if (g_pBlendState) { g_pBlendState->Release(); g_pBlendState = NULL; }
+    if (g_pRasterizerState) { g_pRasterizerState->Release(); g_pRasterizerState = NULL; }
+    if (g_pPixelShader) { g_pPixelShader->Release(); g_pPixelShader = NULL; }
+    if (g_pPixelShaderBlob) { g_pPixelShaderBlob->Release(); g_pPixelShaderBlob = NULL; }
+    if (g_pVertexConstantBuffer) { g_pVertexConstantBuffer->Release(); g_pVertexConstantBuffer = NULL; }
+    if (g_pInputLayout) { g_pInputLayout->Release(); g_pInputLayout = NULL; }
+    if (g_pVertexShader) { g_pVertexShader->Release(); g_pVertexShader = NULL; }
+    if (g_pVertexShaderBlob) { g_pVertexShaderBlob->Release(); g_pVertexShaderBlob = NULL; }
+}
+
+bool    ImGui_ImplDX10_Init(void* hwnd, ID3D10Device* device)
+{
+    g_hWnd = (HWND)hwnd;
+    g_pd3dDevice = device;
+
+    if (!QueryPerformanceFrequency((LARGE_INTEGER *)&g_TicksPerSecond))
+        return false;
+    if (!QueryPerformanceCounter((LARGE_INTEGER *)&g_Time))
+        return false;
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = VK_TAB;                       // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array that we will update during the application lifetime.
+    io.KeyMap[ImGuiKey_LeftArrow] = VK_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR;
+    io.KeyMap[ImGuiKey_PageDown] = VK_NEXT;
+    io.KeyMap[ImGuiKey_Home] = VK_HOME;
+    io.KeyMap[ImGuiKey_End] = VK_END;
+    io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = VK_BACK;
+    io.KeyMap[ImGuiKey_Enter] = VK_RETURN;
+    io.KeyMap[ImGuiKey_Escape] = VK_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = 'A';
+    io.KeyMap[ImGuiKey_C] = 'C';
+    io.KeyMap[ImGuiKey_V] = 'V';
+    io.KeyMap[ImGuiKey_X] = 'X';
+    io.KeyMap[ImGuiKey_Y] = 'Y';
+    io.KeyMap[ImGuiKey_Z] = 'Z';
+
+    io.RenderDrawListsFn = ImGui_ImplDX10_RenderDrawLists;  // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+    io.ImeWindowHandle = g_hWnd;
+
+    return true;
+}
+
+void ImGui_ImplDX10_Shutdown()
+{
+    ImGui_ImplDX10_InvalidateDeviceObjects();
+    ImGui::Shutdown();
+    g_pd3dDevice = NULL;
+    g_hWnd = (HWND)0;
+}
+
+void ImGui_ImplDX10_NewFrame()
+{
+    if (!g_pFontSampler)
+        ImGui_ImplDX10_CreateDeviceObjects();
+
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    RECT rect;
+    GetClientRect(g_hWnd, &rect);
+    io.DisplaySize = ImVec2((float)(rect.right - rect.left), (float)(rect.bottom - rect.top));
+
+    // Setup time step
+    INT64 current_time;
+    QueryPerformanceCounter((LARGE_INTEGER *)&current_time);
+    io.DeltaTime = (float)(current_time - g_Time) / g_TicksPerSecond;
+    g_Time = current_time;
+
+    // Read keyboard modifiers inputs
+    io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0;
+    io.KeyShift = (GetKeyState(VK_SHIFT) & 0x8000) != 0;
+    io.KeyAlt = (GetKeyState(VK_MENU) & 0x8000) != 0;
+    io.KeySuper = false;
+    // io.KeysDown : filled by WM_KEYDOWN/WM_KEYUP events
+    // io.MousePos : filled by WM_MOUSEMOVE events
+    // io.MouseDown : filled by WM_*BUTTON* events
+    // io.MouseWheel : filled by WM_MOUSEWHEEL events
+
+    // Hide OS mouse cursor if ImGui is drawing it
+    SetCursor(io.MouseDrawCursor ? NULL : LoadCursor(NULL, IDC_ARROW));
+
+    // Start the frame
+    ImGui::NewFrame();
+}

examples/directx10_example/imgui_impl_dx10.h

@@ -0,0 +1,24 @@
+// ImGui Win32 + DirectX10 binding
+// In this binding, ImTextureID is used to store a 'ID3D10ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+struct ID3D10Device;
+
+IMGUI_API bool        ImGui_ImplDX10_Init(void* hwnd, ID3D10Device* device);
+IMGUI_API void        ImGui_ImplDX10_Shutdown();
+IMGUI_API void        ImGui_ImplDX10_NewFrame();
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_API void        ImGui_ImplDX10_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplDX10_CreateDeviceObjects();
+
+// Handler for Win32 messages, update mouse/keyboard data.
+// You may or not need this for your implementation, but it can serve as reference for handling inputs.
+// Commented out to avoid dragging dependencies on <windows.h> types. You can copy the extern declaration in your code.
+/*
+IMGUI_API LRESULT   ImGui_ImplDX10_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+*/

examples/directx10_example/main.cpp

@@ -0,0 +1,216 @@
+// 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.
+
+#include <imgui.h>
+#include "imgui_impl_dx10.h"
+#include <d3d10_1.h>
+#include <d3d10.h>
+#include <d3dcompiler.h>
+#define DIRECTINPUT_VERSION 0x0800
+#include <dinput.h>
+#include <tchar.h>
+
+// Data
+static ID3D10Device*            g_pd3dDevice = NULL;
+static IDXGISwapChain*          g_pSwapChain = NULL;
+static ID3D10RenderTargetView*  g_mainRenderTargetView = NULL;
+
+void CreateRenderTarget()
+{
+    DXGI_SWAP_CHAIN_DESC sd;
+    g_pSwapChain->GetDesc(&sd);
+
+    // Create the render target
+    ID3D10Texture2D* pBackBuffer;
+    D3D10_RENDER_TARGET_VIEW_DESC render_target_view_desc;
+    ZeroMemory(&render_target_view_desc, sizeof(render_target_view_desc));
+    render_target_view_desc.Format = sd.BufferDesc.Format;
+    render_target_view_desc.ViewDimension = D3D10_RTV_DIMENSION_TEXTURE2D;
+    g_pSwapChain->GetBuffer(0, __uuidof(ID3D10Texture2D), (LPVOID*)&pBackBuffer);
+    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, &render_target_view_desc, &g_mainRenderTargetView);
+    g_pd3dDevice->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
+    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;
+
+    // Setup rasterizer
+    {
+        D3D10_RASTERIZER_DESC RSDesc;
+        memset(&RSDesc, 0, sizeof(D3D10_RASTERIZER_DESC));
+        RSDesc.FillMode = D3D10_FILL_SOLID;
+        RSDesc.CullMode = D3D10_CULL_NONE;
+        RSDesc.FrontCounterClockwise = FALSE;
+        RSDesc.DepthBias = 0;
+        RSDesc.SlopeScaledDepthBias = 0.0f;
+        RSDesc.DepthBiasClamp = 0;
+        RSDesc.DepthClipEnable = TRUE;
+        RSDesc.ScissorEnable = TRUE;
+        RSDesc.AntialiasedLineEnable = FALSE;
+        RSDesc.MultisampleEnable = (sd.SampleDesc.Count > 1) ? TRUE : FALSE;
+
+        ID3D10RasterizerState* pRState = NULL;
+        g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState);
+        g_pd3dDevice->RSSetState(pRState);
+        pRState->Release();
+    }
+
+    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_ImplDX10_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+    if (ImGui_ImplDX10_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);
+}
+
+int main(int, char**)
+{
+    // Create application window
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, _T("ImGui Example"), NULL };
+    RegisterClassEx(&wc);
+    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("ImGui DirectX10 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 ImGui binding
+    ImGui_ImplDX10_Init(hwnd, g_pd3dDevice);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+    bool show_test_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_col = ImColor(114, 144, 154);
+
+    // Main loop
+    MSG msg;
+    ZeroMemory(&msg, sizeof(msg));
+    while (msg.message != WM_QUIT)
+    {
+        if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
+        {
+            TranslateMessage(&msg);
+            DispatchMessage(&msg);
+            continue;
+        }
+        ImGui_ImplDX10_NewFrame();
+
+        // 1. Show a simple window
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        {
+            static float f = 0.0f;
+            ImGui::Text("Hello, world!");
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+            ImGui::ColorEdit3("clear color", (float*)&clear_col);
+            if (ImGui::Button("Test Window")) show_test_window ^= 1;
+            if (ImGui::Button("Another Window")) show_another_window ^= 1;
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        }
+
+        // 2. Show another simple window, this time using an explicit Begin/End pair
+        if (show_another_window)
+        {
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Text("Hello");
+            ImGui::End();
+        }
+
+        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
+        if (show_test_window)
+        {
+            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);     // Normally user code doesn't need/want to call it because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
+            ImGui::ShowTestWindow(&show_test_window);
+        }
+
+        // Rendering
+        g_pd3dDevice->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_col);
+        ImGui::Render();
+        g_pSwapChain->Present(0, 0);
+    }
+
+    ImGui_ImplDX10_Shutdown();
+    CleanupDeviceD3D();
+    UnregisterClass(_T("ImGui Example"), wc.hInstance);
+
+    return 0;
+}

examples/directx11_example/build_win32.bat

@@ -0,0 +1,4 @@
+@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 "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include" /D UNICODE /D _UNICODE *.cpp ..\..\*.cpp /FeDebug/directx11_example.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d11.lib d3dcompiler.lib
+

examples/directx11_example/directx11_example.vcxproj

@@ -140,13 +140,19 @@
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h" />
     <ClInclude Include="..\..\imgui.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
     <ClInclude Include="imgui_impl_dx11.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\imgui.cpp" />
+    <ClCompile Include="..\..\imgui_demo.cpp" />
+    <ClCompile Include="..\..\imgui_draw.cpp" />
     <ClCompile Include="imgui_impl_dx11.cpp" />
     <ClCompile Include="main.cpp" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

examples/directx11_example/directx11_example.vcxproj.filters

@@ -18,6 +18,9 @@
     <ClInclude Include="imgui_impl_dx11.h">
       <Filter>sources</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\imgui.cpp">
@@ -29,5 +32,14 @@
     <ClCompile Include="imgui_impl_dx11.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
   </ItemGroup>
 </Project>

examples/directx11_example/imgui_impl_dx11.cpp

@@ -1,4 +1,9 @@
 // ImGui Win32 + DirectX11 binding
+// In this binding, ImTextureID is used to store a 'ID3D11ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 #include <imgui.h>
@@ -18,6 +23,7 @@ static HWND                     g_hWnd = 0;
 static ID3D11Device*            g_pd3dDevice = NULL;
 static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
 static ID3D11Buffer*            g_pVB = NULL;
+static ID3D11Buffer*            g_pIB = NULL;
 static ID3D10Blob *             g_pVertexShaderBlob = NULL;
 static ID3D11VertexShader*      g_pVertexShader = NULL;
 static ID3D11InputLayout*       g_pInputLayout = NULL;
@@ -28,7 +34,7 @@ static ID3D11SamplerState*      g_pFontSampler = NULL;
 static ID3D11ShaderResourceView*g_pFontTextureView = NULL;
 static ID3D11RasterizerState*   g_pRasterizerState = NULL;
 static ID3D11BlendState*        g_pBlendState = NULL;
-static int                      VERTEX_BUFFER_SIZE = 30000;     // TODO: Make vertex buffer smaller and grow dynamically as needed.
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
 
 struct VERTEX_CONSTANT_BUFFER
 {
@@ -38,102 +44,189 @@ struct VERTEX_CONSTANT_BUFFER
 // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
 // If text or lines are blurry when integrating ImGui in your engine:
 // - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
-static void ImGui_ImplDX11_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
+void ImGui_ImplDX11_RenderDrawLists(ImDrawData* draw_data)
 {
-    // Copy and convert all vertices into a single contiguous buffer
-    D3D11_MAPPED_SUBRESOURCE mappedResource;
-    if (g_pd3dDeviceContext->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
-        return;
-    ImDrawVert* vtx_dst = (ImDrawVert*)mappedResource.pData;
-    for (int n = 0; n < cmd_lists_count; n++)
+    ID3D11DeviceContext* ctx = g_pd3dDeviceContext;
+
+    // Create and grow vertex/index buffers if needed
+    if (!g_pVB || g_VertexBufferSize < draw_data->TotalVtxCount)
     {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        memcpy(vtx_dst, &cmd_list->vtx_buffer[0], cmd_list->vtx_buffer.size() * sizeof(ImDrawVert));
-        vtx_dst += cmd_list->vtx_buffer.size();
+        if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
+        g_VertexBufferSize = draw_data->TotalVtxCount + 5000;
+        D3D11_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
+        desc.Usage = D3D11_USAGE_DYNAMIC;
+        desc.ByteWidth = g_VertexBufferSize * sizeof(ImDrawVert);
+        desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
+        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+        desc.MiscFlags = 0;
+        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0)
+            return;
     }
-    g_pd3dDeviceContext->Unmap(g_pVB, 0);
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        D3D11_BUFFER_DESC desc;
+        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
+        desc.Usage = D3D11_USAGE_DYNAMIC;
+        desc.ByteWidth = g_IndexBufferSize * sizeof(ImDrawIdx);
+        desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
+        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pIB) < 0)
+            return;
+    }
+
+    // Copy and convert all vertices into a single contiguous buffer
+    D3D11_MAPPED_SUBRESOURCE vtx_resource, idx_resource;
+    if (ctx->Map(g_pVB, 0, D3D11_MAP_WRITE_DISCARD, 0, &vtx_resource) != S_OK)
+        return;
+    if (ctx->Map(g_pIB, 0, D3D11_MAP_WRITE_DISCARD, 0, &idx_resource) != S_OK)
+        return;
+    ImDrawVert* vtx_dst = (ImDrawVert*)vtx_resource.pData;
+    ImDrawIdx* idx_dst = (ImDrawIdx*)idx_resource.pData;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        memcpy(vtx_dst, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
+        memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx));
+        vtx_dst += cmd_list->VtxBuffer.size();
+        idx_dst += cmd_list->IdxBuffer.size();
+    }
+    ctx->Unmap(g_pVB, 0);
+    ctx->Unmap(g_pIB, 0);
 
     // Setup orthographic projection matrix into our constant buffer
     {
-        D3D11_MAPPED_SUBRESOURCE mappedResource;
-        if (g_pd3dDeviceContext->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource) != S_OK)
+        D3D11_MAPPED_SUBRESOURCE mapped_resource;
+        if (ctx->Map(g_pVertexConstantBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mapped_resource) != S_OK)
             return;
-
-        VERTEX_CONSTANT_BUFFER* pConstantBuffer = (VERTEX_CONSTANT_BUFFER*)mappedResource.pData;
-        const float L = 0.0f;
-        const float R = ImGui::GetIO().DisplaySize.x;
-        const float B = ImGui::GetIO().DisplaySize.y;
-        const float T = 0.0f;
-        const float mvp[4][4] = 
+        VERTEX_CONSTANT_BUFFER* constant_buffer = (VERTEX_CONSTANT_BUFFER*)mapped_resource.pData;
+        float L = 0.0f;
+        float R = ImGui::GetIO().DisplaySize.x;
+        float B = ImGui::GetIO().DisplaySize.y;
+        float T = 0.0f;
+        float mvp[4][4] =
         {
-            { 2.0f/(R-L),   0.0f,           0.0f,       0.0f},
-            { 0.0f,         2.0f/(T-B),     0.0f,       0.0f,},
+            { 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 },
             { (R+L)/(L-R),  (T+B)/(B-T),    0.5f,       1.0f },
         };
-        memcpy(&pConstantBuffer->mvp, mvp, sizeof(mvp));
-        g_pd3dDeviceContext->Unmap(g_pVertexConstantBuffer, 0);
+        memcpy(&constant_buffer->mvp, mvp, sizeof(mvp));
+        ctx->Unmap(g_pVertexConstantBuffer, 0);
     }
 
-    // Setup viewport
+    // Backup DX state that will be modified to restore it afterwards (unfortunately this is very ugly looking and verbose. Close your eyes!)
+    struct BACKUP_DX11_STATE
     {
+        UINT                        ScissorRectsCount, ViewportsCount;
+        D3D11_RECT                  ScissorRects[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        D3D11_VIEWPORT              Viewports[D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE];
+        ID3D11RasterizerState*      RS;
+        ID3D11BlendState*           BlendState;
+        FLOAT                       BlendFactor[4];
+        UINT                        SampleMask;
+        ID3D11ShaderResourceView*   PSShaderResource;
+        ID3D11SamplerState*         PSSampler;
+        ID3D11PixelShader*          PS;
+        ID3D11VertexShader*         VS;
+        UINT                        PSInstancesCount, VSInstancesCount;
+        ID3D11ClassInstance*        PSInstances[256], *VSInstances[256];   // 256 is max according to PSSetShader documentation
+        D3D11_PRIMITIVE_TOPOLOGY    PrimitiveTopology;
+        ID3D11Buffer*               IndexBuffer, *VertexBuffer, *VSConstantBuffer;
+        UINT                        IndexBufferOffset, VertexBufferStride, VertexBufferOffset;
+        DXGI_FORMAT                 IndexBufferFormat;
+        ID3D11InputLayout*          InputLayout;
+    };
+    BACKUP_DX11_STATE old;
+    old.ScissorRectsCount = old.ViewportsCount = D3D11_VIEWPORT_AND_SCISSORRECT_OBJECT_COUNT_PER_PIPELINE;
+    ctx->RSGetScissorRects(&old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSGetViewports(&old.ViewportsCount, old.Viewports);
+    ctx->RSGetState(&old.RS);
+    ctx->OMGetBlendState(&old.BlendState, old.BlendFactor, &old.SampleMask);
+    ctx->PSGetShaderResources(0, 1, &old.PSShaderResource);
+    ctx->PSGetSamplers(0, 1, &old.PSSampler);
+    old.PSInstancesCount = old.VSInstancesCount = 256;
+    ctx->PSGetShader(&old.PS, old.PSInstances, &old.PSInstancesCount);
+    ctx->VSGetShader(&old.VS, old.VSInstances, &old.VSInstancesCount);
+    ctx->VSGetConstantBuffers(0, 1, &old.VSConstantBuffer);
+    ctx->IAGetPrimitiveTopology(&old.PrimitiveTopology);
+    ctx->IAGetIndexBuffer(&old.IndexBuffer, &old.IndexBufferFormat, &old.IndexBufferOffset);
+    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 = ImGui::GetIO().DisplaySize.x;
     vp.Height = ImGui::GetIO().DisplaySize.y;
     vp.MinDepth = 0.0f;
     vp.MaxDepth = 1.0f;
-        vp.TopLeftX = 0;
-        vp.TopLeftY = 0;
-        g_pd3dDeviceContext->RSSetViewports(1, &vp);
-    }
+    vp.TopLeftX = vp.TopLeftY = 0.0f;
+    ctx->RSSetViewports(1, &vp);
 
     // Bind shader and vertex buffers
     unsigned int stride = sizeof(ImDrawVert);
     unsigned int offset = 0;
-    g_pd3dDeviceContext->IASetInputLayout(g_pInputLayout);
-    g_pd3dDeviceContext->IASetVertexBuffers(0, 1, &g_pVB, &stride, &offset);
-    g_pd3dDeviceContext->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
-    g_pd3dDeviceContext->VSSetShader(g_pVertexShader, NULL, 0);
-    g_pd3dDeviceContext->VSSetConstantBuffers(0, 1, &g_pVertexConstantBuffer);
-    g_pd3dDeviceContext->PSSetShader(g_pPixelShader, NULL, 0);
-    g_pd3dDeviceContext->PSSetSamplers(0, 1, &g_pFontSampler);
+    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 blendFactor[4] = { 0.f, 0.f, 0.f, 0.f };
-    g_pd3dDeviceContext->OMSetBlendState(g_pBlendState, blendFactor, 0xffffffff);
-    g_pd3dDeviceContext->RSSetState(g_pRasterizerState);
+    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    ctx->OMSetBlendState(g_pBlendState, blend_factor, 0xffffffff);
+    ctx->RSSetState(g_pRasterizerState);
 
     // Render command lists
     int vtx_offset = 0;
-    for (int n = 0; n < cmd_lists_count; n++)
+    int idx_offset = 0;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
+        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->commands[cmd_i];
-            if (pcmd->user_callback)
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
             {
-                pcmd->user_callback(cmd_list, pcmd);
+                pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                const D3D11_RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
-                g_pd3dDeviceContext->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->texture_id);
-                g_pd3dDeviceContext->RSSetScissorRects(1, &r); 
-                g_pd3dDeviceContext->Draw(pcmd->vtx_count, vtx_offset);
+                const D3D11_RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
+                ctx->PSSetShaderResources(0, 1, (ID3D11ShaderResourceView**)&pcmd->TextureId);
+                ctx->RSSetScissorRects(1, &r);
+                ctx->DrawIndexed(pcmd->ElemCount, idx_offset, vtx_offset);
             }
-            vtx_offset += pcmd->vtx_count;
+            idx_offset += pcmd->ElemCount;
         }
+        vtx_offset += cmd_list->VtxBuffer.size();
     }
 
-    // Restore modified state
-    g_pd3dDeviceContext->IASetInputLayout(NULL);
-    g_pd3dDeviceContext->PSSetShader(NULL, NULL, 0);
-    g_pd3dDeviceContext->VSSetShader(NULL, NULL, 0);
+    // Restore modified DX state
+    ctx->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
+    ctx->RSSetViewports(old.ViewportsCount, old.Viewports);
+    ctx->RSSetState(old.RS); if (old.RS) old.RS->Release();
+    ctx->OMSetBlendState(old.BlendState, old.BlendFactor, old.SampleMask); if (old.BlendState) old.BlendState->Release();
+    ctx->PSSetShaderResources(0, 1, &old.PSShaderResource); if (old.PSShaderResource) old.PSShaderResource->Release();
+    ctx->PSSetSamplers(0, 1, &old.PSSampler); if (old.PSSampler) old.PSSampler->Release();
+    ctx->PSSetShader(old.PS, old.PSInstances, old.PSInstancesCount); if (old.PS) old.PS->Release();
+    for (UINT i = 0; i < old.PSInstancesCount; i++) if (old.PSInstances[i]) old.PSInstances[i]->Release();
+    ctx->VSSetShader(old.VS, old.VSInstances, old.VSInstancesCount); if (old.VS) old.VS->Release();
+    ctx->VSSetConstantBuffers(0, 1, &old.VSConstantBuffer); if (old.VSConstantBuffer) old.VSConstantBuffer->Release();
+    for (UINT i = 0; i < old.VSInstancesCount; i++) if (old.VSInstances[i]) old.VSInstances[i]->Release();
+    ctx->IASetPrimitiveTopology(old.PrimitiveTopology);
+    ctx->IASetIndexBuffer(old.IndexBuffer, old.IndexBufferFormat, old.IndexBufferOffset); if (old.IndexBuffer) old.IndexBuffer->Release();
+    ctx->IASetVertexBuffers(0, 1, &old.VertexBuffer, &old.VertexBufferStride, &old.VertexBufferOffset); if (old.VertexBuffer) old.VertexBuffer->Release();
+    ctx->IASetInputLayout(old.InputLayout); if (old.InputLayout) old.InputLayout->Release();
 }
 
-LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
+IMGUI_API LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
 {
     ImGuiIO& io = ImGui::GetIO();
     switch (msg)
@@ -150,6 +243,12 @@ LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lPar
     case WM_RBUTTONUP:
         io.MouseDown[1] = false;
         return true;
+    case WM_MBUTTONDOWN:
+        io.MouseDown[2] = true;
+        return true;
+    case WM_MBUTTONUP:
+        io.MouseDown[2] = false;
+        return true;
     case WM_MOUSEWHEEL:
         io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
         return true;
@@ -176,40 +275,39 @@ LRESULT ImGui_ImplDX11_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lPar
 
 static void ImGui_ImplDX11_CreateFontsTexture()
 {
+    // Build texture atlas
     ImGuiIO& io = ImGui::GetIO();
-
-    // Build
     unsigned char* pixels;
     int width, height;
     io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
 
-    // Create DX11 texture
+    // Upload texture to graphics system
     {
-        D3D11_TEXTURE2D_DESC texDesc;
-        ZeroMemory(&texDesc, sizeof(texDesc));
-        texDesc.Width = width;
-        texDesc.Height = height;
-        texDesc.MipLevels = 1;
-        texDesc.ArraySize = 1;
-        texDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-        texDesc.SampleDesc.Count = 1;
-        texDesc.Usage = D3D11_USAGE_DEFAULT;
-        texDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
-        texDesc.CPUAccessFlags = 0;
+        D3D11_TEXTURE2D_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Width = width;
+        desc.Height = height;
+        desc.MipLevels = 1;
+        desc.ArraySize = 1;
+        desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+        desc.SampleDesc.Count = 1;
+        desc.Usage = D3D11_USAGE_DEFAULT;
+        desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
+        desc.CPUAccessFlags = 0;
 
         ID3D11Texture2D *pTexture = NULL;
         D3D11_SUBRESOURCE_DATA subResource;
         subResource.pSysMem = pixels;
-        subResource.SysMemPitch = texDesc.Width * 4;
+        subResource.SysMemPitch = desc.Width * 4;
         subResource.SysMemSlicePitch = 0;
-        g_pd3dDevice->CreateTexture2D(&texDesc, &subResource, &pTexture);
+        g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
 
         // Create texture view
         D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
         ZeroMemory(&srvDesc, sizeof(srvDesc));
         srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
         srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
-        srvDesc.Texture2D.MipLevels = texDesc.MipLevels;
+        srvDesc.Texture2D.MipLevels = desc.MipLevels;
         srvDesc.Texture2D.MostDetailedMip = 0;
         g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
         pTexture->Release();
@@ -220,35 +318,31 @@ static void ImGui_ImplDX11_CreateFontsTexture()
 
     // Create texture sampler
     {
-        D3D11_SAMPLER_DESC samplerDesc;
-        ZeroMemory(&samplerDesc, sizeof(samplerDesc));
-        samplerDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
-        samplerDesc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
-        samplerDesc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
-        samplerDesc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
-        samplerDesc.MipLODBias = 0.f;
-        samplerDesc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
-        samplerDesc.MinLOD = 0.f;
-        samplerDesc.MaxLOD = 0.f;
-        g_pd3dDevice->CreateSamplerState(&samplerDesc, &g_pFontSampler);
+        D3D11_SAMPLER_DESC desc;
+        ZeroMemory(&desc, sizeof(desc));
+        desc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
+        desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
+        desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
+        desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
+        desc.MipLODBias = 0.f;
+        desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
+        desc.MinLOD = 0.f;
+        desc.MaxLOD = 0.f;
+        g_pd3dDevice->CreateSamplerState(&desc, &g_pFontSampler);
     }
-
-    // Cleanup (don't clear the input data if you want to append new fonts later)
-    io.Fonts->ClearInputData();
-    io.Fonts->ClearTexData();
 }
 
 bool    ImGui_ImplDX11_CreateDeviceObjects()
 {
     if (!g_pd3dDevice)
         return false;
-    if (g_pVB)
+    if (g_pFontSampler)
         ImGui_ImplDX11_InvalidateDeviceObjects();
 
     // Create the vertex shader
     {
         static const char* vertexShader =
-            "cbuffer vertexBuffer : register(c0) \
+            "cbuffer vertexBuffer : register(b0) \
             {\
             float4x4 ProjectionMatrix; \
             };\
@@ -275,31 +369,30 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
             return output;\
             }";
 
-        D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_5_0", 0, 0, &g_pVertexShaderBlob, NULL);
+        D3DCompile(vertexShader, strlen(vertexShader), NULL, NULL, NULL, "main", "vs_4_0", 0, 0, &g_pVertexShaderBlob, NULL);
         if (g_pVertexShaderBlob == NULL) // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
             return false;
         if (g_pd3dDevice->CreateVertexShader((DWORD*)g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), NULL, &g_pVertexShader) != S_OK)
             return false;
 
         // Create the input layout
-        D3D11_INPUT_ELEMENT_DESC localLayout[] = {
-            { "POSITION", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, (size_t)(&((ImDrawVert*)0)->pos), D3D11_INPUT_PER_VERTEX_DATA, 0 },
+        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 },
             { "COLOR",    0, DXGI_FORMAT_R8G8B8A8_UNORM, 0, (size_t)(&((ImDrawVert*)0)->col), D3D11_INPUT_PER_VERTEX_DATA, 0 },
         };
-
-        if (g_pd3dDevice->CreateInputLayout(localLayout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
+        if (g_pd3dDevice->CreateInputLayout(local_layout, 3, g_pVertexShaderBlob->GetBufferPointer(), g_pVertexShaderBlob->GetBufferSize(), &g_pInputLayout) != S_OK)
             return false;
 
         // Create the constant buffer
         {
-            D3D11_BUFFER_DESC cbDesc;
-            cbDesc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
-            cbDesc.Usage = D3D11_USAGE_DYNAMIC;
-            cbDesc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
-            cbDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
-            cbDesc.MiscFlags = 0;
-            g_pd3dDevice->CreateBuffer(&cbDesc, NULL, &g_pVertexConstantBuffer);
+            D3D11_BUFFER_DESC desc;
+            desc.ByteWidth = sizeof(VERTEX_CONSTANT_BUFFER);
+            desc.Usage = D3D11_USAGE_DYNAMIC;
+            desc.BindFlags = D3D11_BIND_CONSTANT_BUFFER;
+            desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
+            desc.MiscFlags = 0;
+            g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVertexConstantBuffer);
         }
     }
 
@@ -321,7 +414,7 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
             return out_col; \
             }";
 
-        D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_5_0", 0, 0, &g_pPixelShaderBlob, NULL);
+        D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_4_0", 0, 0, &g_pPixelShaderBlob, NULL);
         if (g_pPixelShaderBlob == NULL)  // NB: Pass ID3D10Blob* pErrorBlob to D3DCompile() to get error showing in (const char*)pErrorBlob->GetBufferPointer(). Make sure to Release() the blob!
             return false;
         if (g_pd3dDevice->CreatePixelShader((DWORD*)g_pPixelShaderBlob->GetBufferPointer(), g_pPixelShaderBlob->GetBufferSize(), NULL, &g_pPixelShader) != S_OK)
@@ -355,19 +448,6 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
         g_pd3dDevice->CreateRasterizerState(&desc, &g_pRasterizerState);
     }
 
-    // Create the vertex buffer
-    {
-        D3D11_BUFFER_DESC desc;
-        memset(&desc, 0, sizeof(D3D11_BUFFER_DESC));
-        desc.Usage = D3D11_USAGE_DYNAMIC;
-        desc.ByteWidth = VERTEX_BUFFER_SIZE * sizeof(ImDrawVert);
-        desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
-        desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
-        desc.MiscFlags = 0;
-        if (g_pd3dDevice->CreateBuffer(&desc, NULL, &g_pVB) < 0)
-            return false;
-    }
-
     ImGui_ImplDX11_CreateFontsTexture();
 
     return true;
@@ -379,7 +459,8 @@ void    ImGui_ImplDX11_InvalidateDeviceObjects()
         return;
 
     if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; }
-    if (g_pFontTextureView) { g_pFontTextureView->Release(); ImGui::GetIO().Fonts->TexID = 0; }
+    if (g_pFontTextureView) { g_pFontTextureView->Release(); g_pFontTextureView = NULL; ImGui::GetIO().Fonts->TexID = 0; }
+    if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
     if (g_pVB) { g_pVB->Release(); g_pVB = NULL; }
 
     if (g_pBlendState) { g_pBlendState->Release(); g_pBlendState = NULL; }
@@ -409,6 +490,8 @@ bool    ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContex
     io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
     io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
     io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR;
+    io.KeyMap[ImGuiKey_PageDown] = VK_NEXT;
     io.KeyMap[ImGuiKey_Home] = VK_HOME;
     io.KeyMap[ImGuiKey_End] = VK_END;
     io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
@@ -422,7 +505,7 @@ bool    ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContex
     io.KeyMap[ImGuiKey_Y] = 'Y';
     io.KeyMap[ImGuiKey_Z] = 'Z';
 
-    io.RenderDrawListsFn = ImGui_ImplDX11_RenderDrawLists;
+    io.RenderDrawListsFn = ImGui_ImplDX11_RenderDrawLists;  // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
     io.ImeWindowHandle = g_hWnd;
 
     return true;
@@ -439,7 +522,7 @@ void ImGui_ImplDX11_Shutdown()
 
 void ImGui_ImplDX11_NewFrame()
 {
-    if (!g_pVB)
+    if (!g_pFontSampler)
         ImGui_ImplDX11_CreateDeviceObjects();
 
     ImGuiIO& io = ImGui::GetIO();
@@ -459,6 +542,7 @@ void ImGui_ImplDX11_NewFrame()
     io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0;
     io.KeyShift = (GetKeyState(VK_SHIFT) & 0x8000) != 0;
     io.KeyAlt = (GetKeyState(VK_MENU) & 0x8000) != 0;
+    io.KeySuper = false;
     // io.KeysDown : filled by WM_KEYDOWN/WM_KEYUP events
     // io.MousePos : filled by WM_MOUSEMOVE events
     // io.MouseDown : filled by WM_*BUTTON* events

examples/directx11_example/imgui_impl_dx11.h

@@ -1,20 +1,25 @@
 // ImGui Win32 + DirectX11 binding
+// In this binding, ImTextureID is used to store a 'ID3D11ShaderResourceView*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 struct ID3D11Device;
 struct ID3D11DeviceContext;
 
-bool        ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context);
-void        ImGui_ImplDX11_Shutdown();
-void        ImGui_ImplDX11_NewFrame();
+IMGUI_API bool        ImGui_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context);
+IMGUI_API void        ImGui_ImplDX11_Shutdown();
+IMGUI_API void        ImGui_ImplDX11_NewFrame();
 
 // Use if you want to reset your rendering device without losing ImGui state.
-void        ImGui_ImplDX11_InvalidateDeviceObjects();
-bool        ImGui_ImplDX11_CreateDeviceObjects();
+IMGUI_API void        ImGui_ImplDX11_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplDX11_CreateDeviceObjects();
 
 // Handler for Win32 messages, update mouse/keyboard data.
 // You may or not need this for your implementation, but it can serve as reference for handling inputs.
 // Commented out to avoid dragging dependencies on <windows.h> types. You can copy the extern declaration in your code.
 /*
-extern LRESULT   ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+IMGUI_API LRESULT   ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 */

examples/directx11_example/main.cpp

@@ -1,4 +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.
 
 #include <imgui.h>
 #include "imgui_impl_dx11.h"
@@ -6,6 +7,7 @@
 #include <d3dcompiler.h>
 #define DIRECTINPUT_VERSION 0x0800
 #include <dinput.h>
+#include <tchar.h>
 
 // Data
 static ID3D11Device*            g_pd3dDevice = NULL;
@@ -57,9 +59,7 @@ HRESULT CreateDeviceD3D(HWND hWnd)
     }
 
     UINT createDeviceFlags = 0;
-#ifdef _DEBUG
-    createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
-#endif
+    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
     D3D_FEATURE_LEVEL featureLevel;
     const D3D_FEATURE_LEVEL featureLevelArray[1] = { D3D_FEATURE_LEVEL_11_0, };
     if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 1, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
@@ -131,15 +131,15 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 int main(int, char**)
 {
     // Create application window
-    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL };
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, _T("ImGui Example"), NULL };
     RegisterClassEx(&wc);
-    HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX11 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("ImGui DirectX11 Example"), WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
 
     // Initialize Direct3D
     if (CreateDeviceD3D(hwnd) < 0)
     {
         CleanupDeviceD3D();
-        UnregisterClass(L"ImGui Example", wc.hInstance);
+        UnregisterClass(_T("ImGui Example"), wc.hInstance);
         return 1;
     }
 
@@ -149,13 +149,16 @@ int main(int, char**)
 
     // Setup ImGui binding
     ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
     //ImGuiIO& io = ImGui::GetIO();
-    //ImFont* my_font0 = io.Fonts->AddFontDefault();
-    //ImFont* my_font1 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
-    //ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/Karla-Regular.ttf", 16.0f);
-    //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
-    //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
-    //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
 
     bool show_test_window = true;
     bool show_another_window = false;
@@ -210,7 +213,7 @@ int main(int, char**)
 
     ImGui_ImplDX11_Shutdown();
     CleanupDeviceD3D();
-    UnregisterClass(L"ImGui Example", wc.hInstance);
+    UnregisterClass(_T("ImGui Example"), wc.hInstance);
 
     return 0;
 }

examples/directx9_example/build_win32.bat

@@ -0,0 +1,3 @@
+@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 "%DXSDK_DIR%/Include" /D UNICODE /D _UNICODE *.cpp ..\..\*.cpp /FeDebug/directx9_example.exe /FoDebug/ /link /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d9.lib d3dx9d.lib

examples/directx9_example/directx9_example.vcxproj

@@ -139,14 +139,20 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\..\imgui.cpp" />
+    <ClCompile Include="..\..\imgui_demo.cpp" />
+    <ClCompile Include="..\..\imgui_draw.cpp" />
     <ClCompile Include="imgui_impl_dx9.cpp" />
     <ClCompile Include="main.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h" />
     <ClInclude Include="..\..\imgui.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
     <ClInclude Include="imgui_impl_dx9.h" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

examples/directx9_example/directx9_example.vcxproj.filters

@@ -19,6 +19,12 @@
     <ClCompile Include="imgui_impl_dx9.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
@@ -30,5 +36,11 @@
     <ClInclude Include="imgui_impl_dx9.h">
       <Filter>sources</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
   </ItemGroup>
 </Project>

examples/directx9_example/imgui_impl_dx9.cpp

@@ -1,4 +1,9 @@
 // ImGui Win32 + DirectX9 binding
+// In this binding, ImTextureID is used to store a 'LPDIRECT3DTEXTURE9' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 #include <imgui.h>
@@ -15,7 +20,9 @@ static INT64                    g_Time = 0;
 static INT64                    g_TicksPerSecond = 0;
 static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
 static LPDIRECT3DVERTEXBUFFER9  g_pVB = NULL;
-static int                      VERTEX_BUFFER_SIZE = 30000;     // TODO: Make vertex buffer smaller and grow dynamically as needed.
+static LPDIRECT3DINDEXBUFFER9   g_pIB = NULL;
+static LPDIRECT3DTEXTURE9       g_FontTexture = NULL;
+static int                      g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;
 
 struct CUSTOMVERTEX
 {
@@ -28,23 +35,36 @@ struct CUSTOMVERTEX
 // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
 // If text or lines are blurry when integrating ImGui in your engine:
 // - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
-static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
+void ImGui_ImplDX9_RenderDrawLists(ImDrawData* draw_data)
 {
-    size_t total_vtx_count = 0;
-    for (int n = 0; n < cmd_lists_count; n++)
-        total_vtx_count += cmd_lists[n]->vtx_buffer.size();
-    if (total_vtx_count == 0)
+    // Create and grow 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;
+        if (g_pd3dDevice->CreateVertexBuffer(g_VertexBufferSize * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
             return;
+    }
+    if (!g_pIB || g_IndexBufferSize < draw_data->TotalIdxCount)
+    {
+        if (g_pIB) { g_pIB->Release(); g_pIB = NULL; }
+        g_IndexBufferSize = draw_data->TotalIdxCount + 10000;
+        if (g_pd3dDevice->CreateIndexBuffer(g_IndexBufferSize * sizeof(ImDrawIdx), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32, D3DPOOL_DEFAULT, &g_pIB, NULL) < 0)
+            return;
+    }
 
     // Copy and convert all vertices into a single contiguous buffer
     CUSTOMVERTEX* vtx_dst;
-    if (g_pVB->Lock(0, (UINT)total_vtx_count, (void**)&vtx_dst, D3DLOCK_DISCARD) < 0)
+    ImDrawIdx* idx_dst;
+    if (g_pVB->Lock(0, (UINT)(draw_data->TotalVtxCount * sizeof(CUSTOMVERTEX)), (void**)&vtx_dst, D3DLOCK_DISCARD) < 0)
         return;
-    for (int n = 0; n < cmd_lists_count; n++)
+    if (g_pIB->Lock(0, (UINT)(draw_data->TotalIdxCount * sizeof(ImDrawIdx)), (void**)&idx_dst, D3DLOCK_DISCARD) < 0)
+        return;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        const ImDrawVert* vtx_src = &cmd_list->vtx_buffer[0];
-        for (size_t i = 0; i < cmd_list->vtx_buffer.size(); i++)
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const ImDrawVert* vtx_src = &cmd_list->VtxBuffer[0];
+        for (int i = 0; i < cmd_list->VtxBuffer.size(); i++)
         {
             vtx_dst->pos.x = vtx_src->pos.x;
             vtx_dst->pos.y = vtx_src->pos.y;
@@ -55,9 +75,13 @@ static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_
             vtx_dst++;
             vtx_src++;
         }
+        memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx));
+        idx_dst += cmd_list->IdxBuffer.size();
     }
     g_pVB->Unlock();
+    g_pIB->Unlock();
     g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
+    g_pd3dDevice->SetIndices( g_pIB );
     g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
 
     // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing
@@ -72,8 +96,9 @@ static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_
     g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
     g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
     g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true );
-    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1 );
-    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_DIFFUSE );
+    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 );
@@ -83,36 +108,38 @@ static void ImGui_ImplDX9_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_
     // Setup orthographic projection matrix
     D3DXMATRIXA16 mat;
     D3DXMatrixIdentity(&mat);
-    g_pd3dDevice->SetTransform(D3DTS_WORLD, &mat);
-    g_pd3dDevice->SetTransform(D3DTS_VIEW, &mat);
-    D3DXMatrixOrthoOffCenterLH(&mat, 0.5f, ImGui::GetIO().DisplaySize.x+0.5f, ImGui::GetIO().DisplaySize.y+0.5f, 0.5f, -1.0f, +1.0f);
-    g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &mat);
+    g_pd3dDevice->SetTransform( D3DTS_WORLD, &mat );
+    g_pd3dDevice->SetTransform( D3DTS_VIEW, &mat );
+    D3DXMatrixOrthoOffCenterLH( &mat, 0.5f, ImGui::GetIO().DisplaySize.x+0.5f, ImGui::GetIO().DisplaySize.y+0.5f, 0.5f, -1.0f, +1.0f );
+    g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &mat );
 
     // Render command lists
     int vtx_offset = 0;
-    for (int n = 0; n < cmd_lists_count; n++)
+    int idx_offset = 0;
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
+        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->commands[cmd_i];
-            if (pcmd->user_callback)
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
             {
-                pcmd->user_callback(cmd_list, pcmd);
+                pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                const RECT r = { (LONG)pcmd->clip_rect.x, (LONG)pcmd->clip_rect.y, (LONG)pcmd->clip_rect.z, (LONG)pcmd->clip_rect.w };
-                g_pd3dDevice->SetTexture( 0, (LPDIRECT3DTEXTURE9)pcmd->texture_id );
-                g_pd3dDevice->SetScissorRect(&r);
-                g_pd3dDevice->DrawPrimitive(D3DPT_TRIANGLELIST, vtx_offset, pcmd->vtx_count/3);
+                const RECT r = { (LONG)pcmd->ClipRect.x, (LONG)pcmd->ClipRect.y, (LONG)pcmd->ClipRect.z, (LONG)pcmd->ClipRect.w };
+                g_pd3dDevice->SetTexture( 0, (LPDIRECT3DTEXTURE9)pcmd->TextureId );
+                g_pd3dDevice->SetScissorRect( &r );
+                g_pd3dDevice->DrawIndexedPrimitive( D3DPT_TRIANGLELIST, vtx_offset, 0, (UINT)cmd_list->VtxBuffer.size(), idx_offset, pcmd->ElemCount/3 );
             }
-            vtx_offset += pcmd->vtx_count;
+            idx_offset += pcmd->ElemCount;
         }
+        vtx_offset += cmd_list->VtxBuffer.size();
     }
 }
 
-LRESULT ImGui_ImplDX9_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
+IMGUI_API LRESULT ImGui_ImplDX9_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)
 {
     ImGuiIO& io = ImGui::GetIO();
     switch (msg)
@@ -129,6 +156,12 @@ LRESULT ImGui_ImplDX9_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lPara
     case WM_RBUTTONUP:
         io.MouseDown[1] = false;
         return true;
+    case WM_MBUTTONDOWN:
+        io.MouseDown[2] = true;
+        return true;
+    case WM_MBUTTONUP:
+        io.MouseDown[2] = false;
+        return true;
     case WM_MOUSEWHEEL:
         io.MouseWheel += GET_WHEEL_DELTA_WPARAM(wParam) > 0 ? +1.0f : -1.0f;
         return true;
@@ -169,6 +202,8 @@ bool    ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device)
     io.KeyMap[ImGuiKey_RightArrow] = VK_RIGHT;
     io.KeyMap[ImGuiKey_UpArrow] = VK_UP;
     io.KeyMap[ImGuiKey_DownArrow] = VK_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = VK_PRIOR;
+    io.KeyMap[ImGuiKey_PageDown] = VK_NEXT;
     io.KeyMap[ImGuiKey_Home] = VK_HOME;
     io.KeyMap[ImGuiKey_End] = VK_END;
     io.KeyMap[ImGuiKey_Delete] = VK_DELETE;
@@ -182,7 +217,7 @@ bool    ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device)
     io.KeyMap[ImGuiKey_Y] = 'Y';
     io.KeyMap[ImGuiKey_Z] = 'Z';
 
-    io.RenderDrawListsFn = ImGui_ImplDX9_RenderDrawLists;
+    io.RenderDrawListsFn = ImGui_ImplDX9_RenderDrawLists;   // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
     io.ImeWindowHandle = g_hWnd;
 
     return true;
@@ -196,49 +231,37 @@ void ImGui_ImplDX9_Shutdown()
     g_hWnd = 0;
 }
 
-static void ImGui_ImplDX9_CreateFontsTexture()
+static bool ImGui_ImplDX9_CreateFontsTexture()
 {
+    // Build texture atlas
     ImGuiIO& io = ImGui::GetIO();
-
-    // Build
     unsigned char* pixels;
     int width, height, bytes_per_pixel;
-    io.Fonts->GetTexDataAsAlpha8(&pixels, &width, &height, &bytes_per_pixel);
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height, &bytes_per_pixel);
 
-    // Create DX9 texture
-    LPDIRECT3DTEXTURE9 pTexture = NULL;
-    if (D3DXCreateTexture(g_pd3dDevice, width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &pTexture) < 0)
-    {
-        IM_ASSERT(0);
-        return;
-    }
+    // Upload texture to graphics system
+    g_FontTexture = NULL;
+    if (D3DXCreateTexture(g_pd3dDevice, width, height, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8B8G8R8, D3DPOOL_DEFAULT, &g_FontTexture) < 0)
+        return false;
     D3DLOCKED_RECT tex_locked_rect;
-    if (pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK) 
-    {	
-        IM_ASSERT(0); 
-        return; 
-    }
+    if (g_FontTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK)
+        return false;
     for (int y = 0; y < height; y++)
         memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, pixels + (width * bytes_per_pixel) * y, (width * bytes_per_pixel));
-    pTexture->UnlockRect(0);
+    g_FontTexture->UnlockRect(0);
 
     // Store our identifier
-    io.Fonts->TexID = (void *)pTexture;
+    io.Fonts->TexID = (void *)g_FontTexture;
 
-    // Cleanup (don't clear the input data if you want to append new fonts later)
-    io.Fonts->ClearInputData();
-    io.Fonts->ClearTexData();
+    return true;
 }
 
 bool ImGui_ImplDX9_CreateDeviceObjects()
 {
     if (!g_pd3dDevice)
         return false;
-
-    if (g_pd3dDevice->CreateVertexBuffer(VERTEX_BUFFER_SIZE * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &g_pVB, NULL) < 0)
+    if (!ImGui_ImplDX9_CreateFontsTexture())
         return false;
-
-    ImGui_ImplDX9_CreateFontsTexture();
     return true;
 }
 
@@ -251,16 +274,22 @@ void ImGui_ImplDX9_InvalidateDeviceObjects()
         g_pVB->Release();
         g_pVB = NULL;
     }
+    if (g_pIB)
+    {
+        g_pIB->Release();
+        g_pIB = NULL;
+    }
     if (LPDIRECT3DTEXTURE9 tex = (LPDIRECT3DTEXTURE9)ImGui::GetIO().Fonts->TexID)
     {
         tex->Release();
         ImGui::GetIO().Fonts->TexID = 0;
     }
+    g_FontTexture = NULL;
 }
 
 void ImGui_ImplDX9_NewFrame()
 {
-    if (!g_pVB)
+    if (!g_FontTexture)
         ImGui_ImplDX9_CreateDeviceObjects();
 
     ImGuiIO& io = ImGui::GetIO();
@@ -280,6 +309,7 @@ void ImGui_ImplDX9_NewFrame()
     io.KeyCtrl = (GetKeyState(VK_CONTROL) & 0x8000) != 0;
     io.KeyShift = (GetKeyState(VK_SHIFT) & 0x8000) != 0;
     io.KeyAlt = (GetKeyState(VK_MENU) & 0x8000) != 0;
+    io.KeySuper = false;
     // io.KeysDown : filled by WM_KEYDOWN/WM_KEYUP events
     // io.MousePos : filled by WM_MOUSEMOVE events
     // io.MouseDown : filled by WM_*BUTTON* events

examples/directx9_example/imgui_impl_dx9.h

@@ -1,19 +1,24 @@
 // ImGui Win32 + DirectX9 binding
+// In this binding, ImTextureID is used to store a 'LPDIRECT3DTEXTURE9' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 struct IDirect3DDevice9;
 
-bool        ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device);
-void        ImGui_ImplDX9_Shutdown();
-void        ImGui_ImplDX9_NewFrame();
+IMGUI_API bool        ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device);
+IMGUI_API void        ImGui_ImplDX9_Shutdown();
+IMGUI_API void        ImGui_ImplDX9_NewFrame();
 
 // Use if you want to reset your rendering device without losing ImGui state.
-void        ImGui_ImplDX9_InvalidateDeviceObjects();
-bool        ImGui_ImplDX9_CreateDeviceObjects();
+IMGUI_API void        ImGui_ImplDX9_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplDX9_CreateDeviceObjects();
 
 // Handler for Win32 messages, update mouse/keyboard data.
 // You may or not need this for your implementation, but it can serve as reference for handling inputs.
 // Commented out to avoid dragging dependencies on <windows.h> types. You can copy the extern declaration in your code.
 /*
-extern LRESULT   ImGui_ImplDX9_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
+IMGUI_API LRESULT   ImGui_ImplDX9_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 */

examples/directx9_example/main.cpp

@@ -1,10 +1,12 @@
 // 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.
 
 #include <imgui.h>
 #include "imgui_impl_dx9.h"
 #include <d3dx9.h>
 #define DIRECTINPUT_VERSION 0x0800
 #include <dinput.h>
+#include <tchar.h>
 
 // Data
 static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
@@ -44,15 +46,15 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 int main(int, char**)
 {
     // Create application window
-    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, L"ImGui Example", NULL };
+    WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, WndProc, 0L, 0L, GetModuleHandle(NULL), NULL, LoadCursor(NULL, IDC_ARROW), NULL, NULL, _T("ImGui Example"), NULL };
     RegisterClassEx(&wc);
-    HWND hwnd = CreateWindow(L"ImGui Example", L"ImGui DirectX9 Example", WS_OVERLAPPEDWINDOW, 100, 100, 1280, 800, NULL, NULL, wc.hInstance, NULL);
+    HWND hwnd = CreateWindow(_T("ImGui Example"), _T("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)
     {
-        UnregisterClass(L"ImGui Example", wc.hInstance);
+        UnregisterClass(_T("ImGui Example"), wc.hInstance);
         return 0;
     }
     ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
@@ -67,22 +69,22 @@ int main(int, char**)
     if (pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
     {
         pD3D->Release();
-        UnregisterClass(L"ImGui Example", wc.hInstance);
+        UnregisterClass(_T("ImGui Example"), wc.hInstance);
         return 0;
     }
 
     // Setup ImGui binding
     ImGui_ImplDX9_Init(hwnd, g_pd3dDevice);
-    //ImGuiIO& io = ImGui::GetIO();
-    //ImFont* my_font0 = io.Fonts->AddFontDefault();
-    //ImFont* my_font1 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
-    //ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/Karla-Regular.ttf", 16.0f);
-    //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
-    //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
-    //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
 
-    ShowWindow(hwnd, SW_SHOWDEFAULT);
-    UpdateWindow(hwnd);
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
 
     bool show_test_window = true;
     bool show_another_window = false;
@@ -91,6 +93,8 @@ int main(int, char**)
     // Main loop
     MSG msg;
     ZeroMemory(&msg, sizeof(msg));
+    ShowWindow(hwnd, SW_SHOWDEFAULT);
+    UpdateWindow(hwnd);
     while (msg.message != WM_QUIT)
     {
         if (PeekMessage(&msg, NULL, 0U, 0U, PM_REMOVE))
@@ -146,7 +150,7 @@ int main(int, char**)
     ImGui_ImplDX9_Shutdown();
     if (g_pd3dDevice) g_pd3dDevice->Release();
     if (pD3D) pD3D->Release();
-    UnregisterClass(L"ImGui Example", wc.hInstance);
+    UnregisterClass(_T("ImGui Example"), wc.hInstance);
 
     return 0;
 }

examples/imgui_examples_msvc2010.sln

@@ -9,6 +9,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "directx11_example", "direct
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opengl3_example", "opengl3_example\opengl3_example.vcxproj", "{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "directx10_example", "directx10_example\directx10_example.vcxproj", "{345A953E-A004-4648-B442-DC5F9F11068C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -49,6 +51,14 @@ Global
 		{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|Win32.Build.0 = Release|Win32
 		{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|x64.ActiveCfg = Release|x64
 		{4A1FB5EA-22F5-42A8-AB92-1D2DF5D47FB9}.Release|x64.Build.0 = Release|x64
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Debug|Win32.ActiveCfg = Debug|Win32
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Debug|Win32.Build.0 = Debug|Win32
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Debug|x64.ActiveCfg = Debug|x64
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Debug|x64.Build.0 = Debug|x64
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Release|Win32.ActiveCfg = Release|Win32
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Release|Win32.Build.0 = Release|Win32
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Release|x64.ActiveCfg = Release|x64
+		{345A953E-A004-4648-B442-DC5F9F11068C}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

examples/libs/gl3w/GL/gl3w.c

@@ -82,7 +82,7 @@ static void *get_proc(const char *proc)
 {
 	void *res;
 
-	res = glXGetProcAddress((const GLubyte *) proc);
+	res = (void*)glXGetProcAddress((const GLubyte *) proc);
 	if (!res)
 		res = dlsym(libgl, proc);
 	return res;

examples/libs/glfw/include/GLFW/glfw3native.h

@@ -1,5 +1,5 @@
 /*************************************************************************
- * GLFW 3.1 - www.glfw.org
+ * GLFW 3.2 - www.glfw.org
  * A library for OpenGL, window and input
  *------------------------------------------------------------------------
  * Copyright (c) 2002-2006 Marcus Geelnard
@@ -38,20 +38,30 @@ extern "C" {
  * Doxygen documentation
  *************************************************************************/
 
+/*! @file glfw3native.h
+ *  @brief The header of the native access functions.
+ *
+ *  This is the header file of the native access functions.  See @ref native for
+ *  more information.
+ */
 /*! @defgroup native Native access
  *
  *  **By using the native access functions you assert that you know what you're
  *  doing and how to fix problems caused by using them.  If you don't, you
  *  shouldn't be using them.**
  *
- *  Before the inclusion of @ref glfw3native.h, you must define exactly one
- *  window system API macro and exactly one context creation API macro.  Failure
- *  to do this will cause a compile-time error.
+ *  Before the inclusion of @ref glfw3native.h, you may define exactly one
+ *  window system API macro and zero or more context creation API macros.
+ *
+ *  The chosen backends must match those the library was compiled for.  Failure
+ *  to do this will cause a link-time error.
  *
  *  The available window API macros are:
  *  * `GLFW_EXPOSE_NATIVE_WIN32`
  *  * `GLFW_EXPOSE_NATIVE_COCOA`
  *  * `GLFW_EXPOSE_NATIVE_X11`
+ *  * `GLFW_EXPOSE_NATIVE_WAYLAND`
+ *  * `GLFW_EXPOSE_NATIVE_MIR`
  *
  *  The available context API macros are:
  *  * `GLFW_EXPOSE_NATIVE_WGL`
@@ -86,20 +96,23 @@ extern "C" {
 #elif defined(GLFW_EXPOSE_NATIVE_X11)
  #include <X11/Xlib.h>
  #include <X11/extensions/Xrandr.h>
-#else
- #error "No window API selected"
+#elif defined(GLFW_EXPOSE_NATIVE_WAYLAND)
+ #include <wayland-client.h>
+#elif defined(GLFW_EXPOSE_NATIVE_MIR)
+ #include <mir_toolkit/mir_client_library.h>
 #endif
 
 #if defined(GLFW_EXPOSE_NATIVE_WGL)
  /* WGL is declared by windows.h */
-#elif defined(GLFW_EXPOSE_NATIVE_NSGL)
+#endif
+#if defined(GLFW_EXPOSE_NATIVE_NSGL)
  /* NSGL is declared by Cocoa.h */
-#elif defined(GLFW_EXPOSE_NATIVE_GLX)
+#endif
+#if defined(GLFW_EXPOSE_NATIVE_GLX)
  #include <GL/glx.h>
-#elif defined(GLFW_EXPOSE_NATIVE_EGL)
+#endif
+#if defined(GLFW_EXPOSE_NATIVE_EGL)
  #include <EGL/egl.h>
-#else
- #error "No context API selected"
 #endif
 
 
@@ -114,11 +127,10 @@ extern "C" {
  *  of the specified monitor, or `NULL` if an [error](@ref error_handling)
  *  occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.1.
+ *  @since Added in version 3.1.
  *
  *  @ingroup native
  */
@@ -130,11 +142,10 @@ GLFWAPI const char* glfwGetWin32Adapter(GLFWmonitor* monitor);
  *  `\\.\DISPLAY1\Monitor0`) of the specified monitor, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.1.
+ *  @since Added in version 3.1.
  *
  *  @ingroup native
  */
@@ -145,11 +156,10 @@ GLFWAPI const char* glfwGetWin32Monitor(GLFWmonitor* monitor);
  *  @return The `HWND` of the specified window, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -162,11 +172,10 @@ GLFWAPI HWND glfwGetWin32Window(GLFWwindow* window);
  *  @return The `HGLRC` of the specified window, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -179,11 +188,10 @@ GLFWAPI HGLRC glfwGetWGLContext(GLFWwindow* window);
  *  @return The `CGDirectDisplayID` of the specified monitor, or
  *  `kCGNullDirectDisplay` if an [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.1.
+ *  @since Added in version 3.1.
  *
  *  @ingroup native
  */
@@ -194,11 +202,10 @@ GLFWAPI CGDirectDisplayID glfwGetCocoaMonitor(GLFWmonitor* monitor);
  *  @return The `NSWindow` of the specified window, or `nil` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -211,11 +218,10 @@ GLFWAPI id glfwGetCocoaWindow(GLFWwindow* window);
  *  @return The `NSOpenGLContext` of the specified window, or `nil` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -228,11 +234,10 @@ GLFWAPI id glfwGetNSGLContext(GLFWwindow* window);
  *  @return The `Display` used by GLFW, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -243,11 +248,10 @@ GLFWAPI Display* glfwGetX11Display(void);
  *  @return The `RRCrtc` of the specified monitor, or `None` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.1.
+ *  @since Added in version 3.1.
  *
  *  @ingroup native
  */
@@ -258,11 +262,10 @@ GLFWAPI RRCrtc glfwGetX11Adapter(GLFWmonitor* monitor);
  *  @return The `RROutput` of the specified monitor, or `None` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.1.
+ *  @since Added in version 3.1.
  *
  *  @ingroup native
  */
@@ -273,11 +276,10 @@ GLFWAPI RROutput glfwGetX11Monitor(GLFWmonitor* monitor);
  *  @return The `Window` of the specified window, or `None` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -290,15 +292,116 @@ GLFWAPI Window glfwGetX11Window(GLFWwindow* window);
  *  @return The `GLXContext` of the specified window, or `NULL` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
 GLFWAPI GLXContext glfwGetGLXContext(GLFWwindow* window);
+
+/*! @brief Returns the `GLXWindow` of the specified window.
+ *
+ *  @return The `GLXWindow` of the specified window, or `None` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI GLXWindow glfwGetGLXWindow(GLFWwindow* window);
+#endif
+
+#if defined(GLFW_EXPOSE_NATIVE_WAYLAND)
+/*! @brief Returns the `struct wl_display*` used by GLFW.
+ *
+ *  @return The `struct wl_display*` used by GLFW, or `NULL` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI struct wl_display* glfwGetWaylandDisplay(void);
+
+/*! @brief Returns the `struct wl_output*` of the specified monitor.
+ *
+ *  @return The `struct wl_output*` of the specified monitor, or `NULL` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI struct wl_output* glfwGetWaylandMonitor(GLFWmonitor* monitor);
+
+/*! @brief Returns the main `struct wl_surface*` of the specified window.
+ *
+ *  @return The main `struct wl_surface*` of the specified window, or `NULL` if
+ *  an [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI struct wl_surface* glfwGetWaylandWindow(GLFWwindow* window);
+#endif
+
+#if defined(GLFW_EXPOSE_NATIVE_MIR)
+/*! @brief Returns the `MirConnection*` used by GLFW.
+ *
+ *  @return The `MirConnection*` used by GLFW, or `NULL` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI MirConnection* glfwGetMirDisplay(void);
+
+/*! @brief Returns the Mir output ID of the specified monitor.
+ *
+ *  @return The Mir output ID of the specified monitor, or zero if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI int glfwGetMirMonitor(GLFWmonitor* monitor);
+
+/*! @brief Returns the `MirSurface*` of the specified window.
+ *
+ *  @return The `MirSurface*` of the specified window, or `NULL` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
+ *
+ *  @since Added in version 3.2.
+ *
+ *  @ingroup native
+ */
+GLFWAPI MirSurface* glfwGetMirWindow(GLFWwindow* window);
 #endif
 
 #if defined(GLFW_EXPOSE_NATIVE_EGL)
@@ -307,11 +410,10 @@ GLFWAPI GLXContext glfwGetGLXContext(GLFWwindow* window);
  *  @return The `EGLDisplay` used by GLFW, or `EGL_NO_DISPLAY` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -322,11 +424,10 @@ GLFWAPI EGLDisplay glfwGetEGLDisplay(void);
  *  @return The `EGLContext` of the specified window, or `EGL_NO_CONTEXT` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */
@@ -337,11 +438,10 @@ GLFWAPI EGLContext glfwGetEGLContext(GLFWwindow* window);
  *  @return The `EGLSurface` of the specified window, or `EGL_NO_SURFACE` if an
  *  [error](@ref error_handling) occurred.
  *
- *  @par Thread Safety
- *  This function may be called from any thread.  Access is not synchronized.
+ *  @thread_safety This function may be called from any thread.  Access is not
+ *  synchronized.
  *
- *  @par History
- *  Added in GLFW 3.0.
+ *  @since Added in version 3.0.
  *
  *  @ingroup native
  */

examples/libs/usynergy/uSynergy.c

@@ -0,0 +1,636 @@
+/*
+uSynergy client -- Implementation for the embedded Synergy client library
+  version 1.0.0, July 7th, 2012
+
+Copyright (c) 2012 Alex Evans
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+   1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+
+   2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+
+   3. This notice may not be removed or altered from any source
+   distribution.
+*/
+#include "uSynergy.h"
+#include <stdio.h>
+#include <string.h>
+
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Internal helpers
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief Read 16 bit integer in network byte order and convert to native byte order
+**/
+static int16_t sNetToNative16(const unsigned char *value)
+{
+#ifdef USYNERGY_LITTLE_ENDIAN
+	return value[1] | (value[0] << 8);
+#else
+	return value[0] | (value[1] << 8);
+#endif
+}
+
+
+
+/**
+@brief Read 32 bit integer in network byte order and convert to native byte order
+**/
+static int32_t sNetToNative32(const unsigned char *value)
+{
+#ifdef USYNERGY_LITTLE_ENDIAN
+	return value[3] | (value[2] << 8) | (value[1] << 16) | (value[0] << 24);
+#else
+	return value[0] | (value[1] << 8) | (value[2] << 16) | (value[3] << 24);
+#endif
+}
+
+
+
+/**
+@brief Trace text to client
+**/
+static void sTrace(uSynergyContext *context, const char* text)
+{
+	// Don't trace if we don't have a trace function
+	if (context->m_traceFunc != 0L)
+		context->m_traceFunc(context->m_cookie, text);
+}
+
+
+
+/**
+@brief Add string to reply packet
+**/
+static void sAddString(uSynergyContext *context, const char *string)
+{
+	size_t len = strlen(string);
+	memcpy(context->m_replyCur, string, len);
+	context->m_replyCur += len;
+}
+
+
+
+/**
+@brief Add uint8 to reply packet
+**/
+static void sAddUInt8(uSynergyContext *context, uint8_t value)
+{
+	*context->m_replyCur++ = value;
+}
+
+
+
+/**
+@brief Add uint16 to reply packet
+**/
+static void sAddUInt16(uSynergyContext *context, uint16_t value)
+{
+	uint8_t *reply = context->m_replyCur;
+	*reply++ = (uint8_t)(value >> 8);
+	*reply++ = (uint8_t)value;
+	context->m_replyCur = reply;
+}
+
+
+
+/**
+@brief Add uint32 to reply packet
+**/
+static void sAddUInt32(uSynergyContext *context, uint32_t value)
+{
+	uint8_t *reply = context->m_replyCur;
+	*reply++ = (uint8_t)(value >> 24);
+	*reply++ = (uint8_t)(value >> 16);
+	*reply++ = (uint8_t)(value >> 8);
+	*reply++ = (uint8_t)value;
+	context->m_replyCur = reply;
+}
+
+
+
+/**
+@brief Send reply packet
+**/
+static uSynergyBool sSendReply(uSynergyContext *context)
+{
+	// Set header size
+	uint8_t		*reply_buf	= context->m_replyBuffer;
+	uint32_t	reply_len	= (uint32_t)(context->m_replyCur - reply_buf);				/* Total size of reply */
+	uint32_t	body_len	= reply_len - 4;											/* Size of body */
+	uSynergyBool ret;
+	reply_buf[0] = (uint8_t)(body_len >> 24);
+	reply_buf[1] = (uint8_t)(body_len >> 16);
+	reply_buf[2] = (uint8_t)(body_len >> 8);
+	reply_buf[3] = (uint8_t)body_len;
+
+	// Send reply
+	ret = context->m_sendFunc(context->m_cookie, context->m_replyBuffer, reply_len);
+
+	// Reset reply buffer write pointer
+	context->m_replyCur = context->m_replyBuffer+4;
+	return ret;
+}
+
+
+
+/**
+@brief Call mouse callback after a mouse event
+**/
+static void sSendMouseCallback(uSynergyContext *context)
+{
+	// Skip if no callback is installed
+	if (context->m_mouseCallback == 0L)
+		return;
+
+	// Send callback
+	context->m_mouseCallback(context->m_cookie, context->m_mouseX, context->m_mouseY, context->m_mouseWheelX,
+		context->m_mouseWheelY, context->m_mouseButtonLeft, context->m_mouseButtonRight, context->m_mouseButtonMiddle);
+}
+
+
+
+/**
+@brief Send keyboard callback when a key has been pressed or released
+**/
+static void sSendKeyboardCallback(uSynergyContext *context, uint16_t key, uint16_t modifiers, uSynergyBool down, uSynergyBool repeat)
+{
+	// Skip if no callback is installed
+	if (context->m_keyboardCallback == 0L)
+		return;
+
+	// Send callback
+	context->m_keyboardCallback(context->m_cookie, key, modifiers, down, repeat);
+}
+
+
+
+/**
+@brief Send joystick callback
+**/
+static void sSendJoystickCallback(uSynergyContext *context, uint8_t joyNum)
+{
+	int8_t *sticks;
+
+	// Skip if no callback is installed
+	if (context->m_joystickCallback == 0L)
+		return;
+
+	// Send callback
+	sticks = context->m_joystickSticks[joyNum];
+	context->m_joystickCallback(context->m_cookie, joyNum, context->m_joystickButtons[joyNum], sticks[0], sticks[1], sticks[2], sticks[3]);
+}
+
+
+
+/**
+@brief Parse a single client message, update state, send callbacks and send replies
+**/
+#define USYNERGY_IS_PACKET(pkt_id)	memcmp(message+4, pkt_id, 4)==0
+static void sProcessMessage(uSynergyContext *context, const uint8_t *message)
+{
+	// We have a packet!
+	if (memcmp(message+4, "Synergy", 7)==0)
+	{
+		// Welcome message
+		//		kMsgHello			= "Synergy%2i%2i"
+		//		kMsgHelloBack		= "Synergy%2i%2i%s"
+		sAddString(context, "Synergy");
+		sAddUInt16(context, USYNERGY_PROTOCOL_MAJOR);
+		sAddUInt16(context, USYNERGY_PROTOCOL_MINOR);
+		sAddUInt32(context, (uint32_t)strlen(context->m_clientName));
+		sAddString(context, context->m_clientName);
+		if (!sSendReply(context))
+		{
+			// Send reply failed, let's try to reconnect
+			sTrace(context, "SendReply failed, trying to reconnect in a second");
+			context->m_connected = USYNERGY_FALSE;
+			context->m_sleepFunc(context->m_cookie, 1000);
+		}
+		else
+		{
+			// Let's assume we're connected
+			char buffer[256+1];
+			sprintf(buffer, "Connected as client \"%s\"", context->m_clientName);
+			sTrace(context, buffer);
+			context->m_hasReceivedHello = USYNERGY_TRUE;
+		}
+		return;
+	}
+	else if (USYNERGY_IS_PACKET("QINF"))
+	{
+		// Screen info. Reply with DINF
+		//		kMsgQInfo			= "QINF"
+		//		kMsgDInfo			= "DINF%2i%2i%2i%2i%2i%2i%2i"
+		uint16_t x = 0, y = 0, warp = 0;
+		sAddString(context, "DINF");
+		sAddUInt16(context, x);
+		sAddUInt16(context, y);
+		sAddUInt16(context, context->m_clientWidth);
+		sAddUInt16(context, context->m_clientHeight);
+		sAddUInt16(context, warp);
+		sAddUInt16(context, 0);		// mx?
+		sAddUInt16(context, 0);		// my?
+		sSendReply(context);
+		return;
+	}
+	else if (USYNERGY_IS_PACKET("CIAK"))
+	{
+		// Do nothing?
+		//		kMsgCInfoAck		= "CIAK"
+		return;
+	}
+	else if (USYNERGY_IS_PACKET("CROP"))
+	{
+		// Do nothing?
+		//		kMsgCResetOptions	= "CROP"
+		return;
+	}
+	else if (USYNERGY_IS_PACKET("CINN"))
+	{
+		// Screen enter. Reply with CNOP
+		//		kMsgCEnter 			= "CINN%2i%2i%4i%2i"
+
+		// Obtain the Synergy sequence number
+		context->m_sequenceNumber = sNetToNative32(message + 12);
+		context->m_isCaptured = USYNERGY_TRUE;
+
+		// Call callback
+		if (context->m_screenActiveCallback != 0L)
+			context->m_screenActiveCallback(context->m_cookie, USYNERGY_TRUE);
+	}
+	else if (USYNERGY_IS_PACKET("COUT"))
+	{
+		// Screen leave
+		//		kMsgCLeave 			= "COUT"
+		context->m_isCaptured = USYNERGY_FALSE;
+
+		// Call callback
+		if (context->m_screenActiveCallback != 0L)
+			context->m_screenActiveCallback(context->m_cookie, USYNERGY_FALSE);
+	}
+	else if (USYNERGY_IS_PACKET("DMDN"))
+	{
+		// Mouse down
+		//		kMsgDMouseDown		= "DMDN%1i"
+		char btn = message[8]-1;
+		if (btn==2)
+			context->m_mouseButtonRight		= USYNERGY_TRUE;
+		else if (btn==1)
+			context->m_mouseButtonMiddle	= USYNERGY_TRUE;
+		else
+			context->m_mouseButtonLeft		= USYNERGY_TRUE;
+		sSendMouseCallback(context);
+	}
+	else if (USYNERGY_IS_PACKET("DMUP"))
+	{
+		// Mouse up
+		//		kMsgDMouseUp		= "DMUP%1i"
+		char btn = message[8]-1;
+		if (btn==2)
+			context->m_mouseButtonRight		= USYNERGY_FALSE;
+		else if (btn==1)
+			context->m_mouseButtonMiddle	= USYNERGY_FALSE;
+		else
+			context->m_mouseButtonLeft		= USYNERGY_FALSE;
+		sSendMouseCallback(context);
+	}
+	else if (USYNERGY_IS_PACKET("DMMV"))
+	{
+		// Mouse move. Reply with CNOP
+		//		kMsgDMouseMove		= "DMMV%2i%2i"
+		context->m_mouseX = sNetToNative16(message+8);
+		context->m_mouseY = sNetToNative16(message+10);
+		sSendMouseCallback(context);
+	}
+	else if (USYNERGY_IS_PACKET("DMWM"))
+	{
+		// Mouse wheel
+		//		kMsgDMouseWheel		= "DMWM%2i%2i"
+		//		kMsgDMouseWheel1_0	= "DMWM%2i"
+		context->m_mouseWheelX += sNetToNative16(message+8);
+		context->m_mouseWheelY += sNetToNative16(message+10);
+		sSendMouseCallback(context);
+	}
+	else if (USYNERGY_IS_PACKET("DKDN"))
+	{
+		// Key down
+		//		kMsgDKeyDown		= "DKDN%2i%2i%2i"
+		//		kMsgDKeyDown1_0		= "DKDN%2i%2i"
+		//uint16_t id = sNetToNative16(message+8);
+		uint16_t mod = sNetToNative16(message+10);
+		uint16_t key = sNetToNative16(message+12);
+		sSendKeyboardCallback(context, key, mod, USYNERGY_TRUE, USYNERGY_FALSE);
+	}
+	else if (USYNERGY_IS_PACKET("DKRP"))
+	{
+		// Key repeat
+		//		kMsgDKeyRepeat		= "DKRP%2i%2i%2i%2i"
+		//		kMsgDKeyRepeat1_0	= "DKRP%2i%2i%2i"
+		uint16_t mod = sNetToNative16(message+10);
+//		uint16_t count = sNetToNative16(message+12);
+		uint16_t key = sNetToNative16(message+14);
+		sSendKeyboardCallback(context, key, mod, USYNERGY_TRUE, USYNERGY_TRUE);
+	}
+	else if (USYNERGY_IS_PACKET("DKUP"))
+	{
+		// Key up
+		//		kMsgDKeyUp			= "DKUP%2i%2i%2i"
+		//		kMsgDKeyUp1_0		= "DKUP%2i%2i"
+		//uint16 id=Endian::sNetToNative(sbuf[4]);
+		uint16_t mod = sNetToNative16(message+10);
+		uint16_t key = sNetToNative16(message+12);
+		sSendKeyboardCallback(context, key, mod, USYNERGY_FALSE, USYNERGY_FALSE);
+	}
+	else if (USYNERGY_IS_PACKET("DGBT"))
+	{
+		// Joystick buttons
+		//		kMsgDGameButtons	= "DGBT%1i%2i";
+		uint8_t	joy_num = message[8];
+		if (joy_num<USYNERGY_NUM_JOYSTICKS)
+		{
+			// Copy button state, then send callback
+			context->m_joystickButtons[joy_num] = (message[9] << 8) | message[10];
+			sSendJoystickCallback(context, joy_num);
+		}
+	}
+	else if (USYNERGY_IS_PACKET("DGST"))
+	{
+		// Joystick sticks
+		//		kMsgDGameSticks		= "DGST%1i%1i%1i%1i%1i";
+		uint8_t	joy_num = message[8];
+		if (joy_num<USYNERGY_NUM_JOYSTICKS)
+		{
+			// Copy stick state, then send callback
+			memcpy(context->m_joystickSticks[joy_num], message+9, 4);
+			sSendJoystickCallback(context, joy_num);
+		}
+	}
+	else if (USYNERGY_IS_PACKET("DSOP"))
+	{
+		// Set options
+		//		kMsgDSetOptions		= "DSOP%4I"
+	}
+	else if (USYNERGY_IS_PACKET("CALV"))
+	{
+		// Keepalive, reply with CALV and then CNOP
+		//		kMsgCKeepAlive		= "CALV"
+		sAddString(context, "CALV");
+		sSendReply(context);
+		// now reply with CNOP
+	}
+	else if (USYNERGY_IS_PACKET("DCLP"))
+	{
+		// Clipboard message
+		//		kMsgDClipboard		= "DCLP%1i%4i%s"
+		//
+		// The clipboard message contains:
+		//		1 uint32:	The size of the message
+		//		4 chars: 	The identifier ("DCLP")
+		//		1 uint8: 	The clipboard index
+		//		1 uint32:	The sequence number. It's zero, because this message is always coming from the server?
+		//		1 uint32:	The total size of the remaining 'string' (as per the Synergy %s string format (which is 1 uint32 for size followed by a char buffer (not necessarily null terminated)).
+		//		1 uint32:	The number of formats present in the message
+		// And then 'number of formats' times the following:
+		//		1 uint32:	The format of the clipboard data
+		//		1 uint32:	The size n of the clipboard data
+		//		n uint8:	The clipboard data
+		const uint8_t *	parse_msg	= message+17;
+		uint32_t		num_formats = sNetToNative32(parse_msg);
+		parse_msg += 4;
+		for (; num_formats; num_formats--)
+		{
+			// Parse clipboard format header
+			uint32_t format	= sNetToNative32(parse_msg);
+			uint32_t size	= sNetToNative32(parse_msg+4);
+			parse_msg += 8;
+			
+			// Call callback
+			if (context->m_clipboardCallback)
+				context->m_clipboardCallback(context->m_cookie, format, parse_msg, size);
+
+			parse_msg += size;
+		}
+	}
+	else
+	{
+		// Unknown packet, could be any of these
+		//		kMsgCNoop 			= "CNOP"
+		//		kMsgCClose 			= "CBYE"
+		//		kMsgCClipboard 		= "CCLP%1i%4i"
+		//		kMsgCScreenSaver 	= "CSEC%1i"
+		//		kMsgDKeyRepeat		= "DKRP%2i%2i%2i%2i"
+		//		kMsgDKeyRepeat1_0	= "DKRP%2i%2i%2i"
+		//		kMsgDMouseRelMove	= "DMRM%2i%2i"
+		//		kMsgEIncompatible	= "EICV%2i%2i"
+		//		kMsgEBusy 			= "EBSY"
+		//		kMsgEUnknown		= "EUNK"
+		//		kMsgEBad			= "EBAD"
+		char buffer[64];
+		sprintf(buffer, "Unknown packet '%c%c%c%c'", message[4], message[5], message[6], message[7]);
+		sTrace(context, buffer);
+		return;
+	}
+
+	// Reply with CNOP maybe?
+	sAddString(context, "CNOP");
+	sSendReply(context);
+}
+#undef USYNERGY_IS_PACKET
+
+
+
+/**
+@brief Mark context as being disconnected
+**/
+static void sSetDisconnected(uSynergyContext *context)
+{
+	context->m_connected		= USYNERGY_FALSE;
+	context->m_hasReceivedHello = USYNERGY_FALSE;
+	context->m_isCaptured		= USYNERGY_FALSE;
+	context->m_replyCur			= context->m_replyBuffer + 4;
+	context->m_sequenceNumber	= 0;
+}
+
+
+
+/**
+@brief Update a connected context
+**/
+static void sUpdateContext(uSynergyContext *context)
+{
+	/* Receive data (blocking) */
+	int receive_size = USYNERGY_RECEIVE_BUFFER_SIZE - context->m_receiveOfs;
+	int num_received = 0;
+	int packlen = 0;
+	if (context->m_receiveFunc(context->m_cookie, context->m_receiveBuffer + context->m_receiveOfs, receive_size, &num_received) == USYNERGY_FALSE)
+	{
+		/* Receive failed, let's try to reconnect */
+		char buffer[128];
+		sprintf(buffer, "Receive failed (%d bytes asked, %d bytes received), trying to reconnect in a second", receive_size, num_received);
+		sTrace(context, buffer);
+		sSetDisconnected(context);
+		context->m_sleepFunc(context->m_cookie, 1000);
+		return;
+	}
+	context->m_receiveOfs += num_received;
+
+	/*	If we didn't receive any data then we're probably still polling to get connected and
+		therefore not getting any data back. To avoid overloading the system with a Synergy
+		thread that would hammer on polling, we let it rest for a bit if there's no data. */
+	if (num_received == 0)
+		context->m_sleepFunc(context->m_cookie, 500);
+
+	/* Check for timeouts */
+	if (context->m_hasReceivedHello)
+	{
+		uint32_t cur_time = context->m_getTimeFunc();
+		if (num_received == 0)
+		{
+			/* Timeout after 2 secs of inactivity (we received no CALV) */
+			if ((cur_time - context->m_lastMessageTime) > USYNERGY_IDLE_TIMEOUT)
+				sSetDisconnected(context);
+		}
+		else
+			context->m_lastMessageTime = cur_time;
+	}
+
+	/* Eat packets */
+	for (;;)
+	{
+		/* Grab packet length and bail out if the packet goes beyond the end of the buffer */
+		packlen = sNetToNative32(context->m_receiveBuffer);
+		if (packlen+4 > context->m_receiveOfs)
+			break;
+
+		/* Process message */
+		sProcessMessage(context, context->m_receiveBuffer);
+
+		/* Move packet to front of buffer */
+		memmove(context->m_receiveBuffer, context->m_receiveBuffer+packlen+4, context->m_receiveOfs-packlen-4);
+		context->m_receiveOfs -= packlen+4;
+	}
+
+	/* Throw away over-sized packets */
+	if (packlen > USYNERGY_RECEIVE_BUFFER_SIZE)
+	{
+		/* Oversized packet, ditch tail end */
+		char buffer[128];
+		sprintf(buffer, "Oversized packet: '%c%c%c%c' (length %d)", context->m_receiveBuffer[4], context->m_receiveBuffer[5], context->m_receiveBuffer[6], context->m_receiveBuffer[7], packlen);
+		sTrace(context, buffer);
+		num_received = context->m_receiveOfs-4; // 4 bytes for the size field
+		while (num_received != packlen)
+		{
+			int buffer_left = packlen - num_received;
+			int to_receive = buffer_left < USYNERGY_RECEIVE_BUFFER_SIZE ? buffer_left : USYNERGY_RECEIVE_BUFFER_SIZE;
+			int ditch_received = 0;
+			if (context->m_receiveFunc(context->m_cookie, context->m_receiveBuffer, to_receive, &ditch_received) == USYNERGY_FALSE)
+			{
+				/* Receive failed, let's try to reconnect */
+				sTrace(context, "Receive failed, trying to reconnect in a second");
+				sSetDisconnected(context);
+				context->m_sleepFunc(context->m_cookie, 1000);
+				break;
+			}
+			else
+			{
+				num_received += ditch_received;
+			}
+		}
+		context->m_receiveOfs = 0;
+	}
+}
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Public interface
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief Initialize uSynergy context
+**/
+void uSynergyInit(uSynergyContext *context)
+{
+	/* Zero memory */
+	memset(context, 0, sizeof(uSynergyContext));
+
+	/* Initialize to default state */
+	sSetDisconnected(context);
+}
+
+
+/**
+@brief Update uSynergy
+**/
+void uSynergyUpdate(uSynergyContext *context)
+{
+	if (context->m_connected)
+	{
+		/* Update context, receive data, call callbacks */
+		sUpdateContext(context);
+	}
+	else
+	{
+		/* Try to connect */
+		if (context->m_connectFunc(context->m_cookie))
+			context->m_connected = USYNERGY_TRUE;
+	}
+}
+
+
+
+/**
+@brief Send clipboard data
+**/
+void uSynergySendClipboard(uSynergyContext *context, const char *text)
+{
+	// Calculate maximum size that will fit in a reply packet
+	uint32_t overhead_size =	4 +					/* Message size */
+								4 +					/* Message ID */
+								1 +					/* Clipboard index */
+								4 +					/* Sequence number */
+								4 +					/* Rest of message size (because it's a Synergy string from here on) */
+								4 +					/* Number of clipboard formats */
+								4 +					/* Clipboard format */
+								4;					/* Clipboard data length */
+	uint32_t max_length = USYNERGY_REPLY_BUFFER_SIZE - overhead_size;
+	
+	// Clip text to max length
+	uint32_t text_length = (uint32_t)strlen(text);
+	if (text_length > max_length)
+	{
+		char buffer[128];
+		sprintf(buffer, "Clipboard buffer too small, clipboard truncated at %d characters", max_length);
+		sTrace(context, buffer);
+		text_length = max_length;
+	}
+
+	// Assemble packet
+	sAddString(context, "DCLP");
+	sAddUInt8(context, 0);							/* Clipboard index */
+	sAddUInt32(context, context->m_sequenceNumber);
+	sAddUInt32(context, 4+4+4+text_length);			/* Rest of message size: numFormats, format, length, data */
+	sAddUInt32(context, 1);							/* Number of formats (only text for now) */
+	sAddUInt32(context, USYNERGY_CLIPBOARD_FORMAT_TEXT);
+	sAddUInt32(context, text_length);
+	sAddString(context, text);
+	sSendReply(context);
+}

examples/libs/usynergy/uSynergy.h

@@ -0,0 +1,420 @@
+/*
+uSynergy client -- Interface for the embedded Synergy client library
+  version 1.0.0, July 7th, 2012
+
+Copyright (C) 2012 Synergy Si Ltd.
+Copyright (c) 2012 Alex Evans
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+   1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+
+   2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+
+   3. This notice may not be removed or altered from any source
+   distribution.
+*/
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Configuration
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief Determine endianness
+**/
+#if defined(USYNERGY_LITTLE_ENDIAN) && defined(USYNERGY_BIG_ENDIAN)
+	/* Ambiguous: both endians specified */
+	#error "Can't define both USYNERGY_LITTLE_ENDIAN and USYNERGY_BIG_ENDIAN"
+#elif !defined(USYNERGY_LITTLE_ENDIAN) && !defined(USYNERGY_BIG_ENDIAN)
+	/* Attempt to auto detect */
+	#if defined(__LITTLE_ENDIAN__) || defined(LITTLE_ENDIAN) || (_BYTE_ORDER == _LITTLE_ENDIAN)
+		#define USYNERGY_LITTLE_ENDIAN
+	#elif defined(__BIG_ENDIAN__) || defined(BIG_ENDIAN) || (_BYTE_ORDER == _BIG_ENDIAN)
+		#define USYNERGY_BIG_ENDIAN
+	#else
+		#error "Can't detect endian-nes, please defined either USYNERGY_LITTLE_ENDIAN or USYNERGY_BIG_ENDIAN";
+	#endif
+#else
+	/* User-specified endian-nes, nothing to do for us */
+#endif
+
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Types and Constants
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief Boolean type
+**/
+typedef int			uSynergyBool;
+#define				USYNERGY_FALSE					0				/* False value */
+#define				USYNERGY_TRUE					1				/* True value */
+
+
+/**
+@brief User context type
+
+The uSynergyCookie type is an opaque type that is used by uSynergy to communicate to the client. It is passed along to
+callback functions as context.
+**/
+typedef struct { int ignored; } *					uSynergyCookie;
+
+
+
+/**
+@brief Clipboard types
+**/
+enum uSynergyClipboardFormat
+{
+	USYNERGY_CLIPBOARD_FORMAT_TEXT					= 0,			/* Text format, UTF-8, newline is LF */
+	USYNERGY_CLIPBOARD_FORMAT_BITMAP				= 1,			/* Bitmap format, BMP 24/32bpp, BI_RGB */
+	USYNERGY_CLIPBOARD_FORMAT_HTML					= 2,			/* HTML format, HTML fragment, UTF-8, newline is LF */
+};
+
+
+
+/**
+@brief Constants and limits
+**/
+#define				USYNERGY_NUM_JOYSTICKS			4				/* Maximum number of supported joysticks */
+
+#define				USYNERGY_PROTOCOL_MAJOR			1				/* Major protocol version */
+#define				USYNERGY_PROTOCOL_MINOR			4				/* Minor protocol version */
+
+#define				USYNERGY_IDLE_TIMEOUT			2000			/* Timeout in milliseconds before reconnecting */
+
+#define				USYNERGY_TRACE_BUFFER_SIZE		1024			/* Maximum length of traced message */
+#define				USYNERGY_REPLY_BUFFER_SIZE		1024			/* Maximum size of a reply packet */
+#define				USYNERGY_RECEIVE_BUFFER_SIZE	4096			/* Maximum size of an incoming packet */
+
+
+
+/**
+@brief Keyboard constants
+**/
+#define				USYNERGY_MODIFIER_SHIFT			0x0001			/* Shift key modifier */
+#define				USYNERGY_MODIFIER_CTRL			0x0002			/* Ctrl key modifier */
+#define				USYNERGY_MODIFIER_ALT			0x0004			/* Alt key modifier */
+#define				USYNERGY_MODIFIER_META			0x0008			/* Meta key modifier */
+#define				USYNERGY_MODIFIER_WIN			0x0010			/* Windows key modifier */
+#define				USYNERGY_MODIFIER_ALT_GR		0x0020			/* AltGr key modifier */
+#define				USYNERGY_MODIFIER_LEVEL5LOCK	0x0040			/* Level5Lock key modifier */
+#define				USYNERGY_MODIFIER_CAPSLOCK		0x1000			/* CapsLock key modifier */
+#define				USYNERGY_MODIFIER_NUMLOCK		0x2000			/* NumLock key modifier */
+#define				USYNERGY_MODIFIER_SCROLLOCK		0x4000			/* ScrollLock key modifier */
+
+
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Functions and Callbacks
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief Connect function
+
+This function is called when uSynergy needs to connect to the host. It doesn't imply a network implementation or
+destination address, that must all be handled on the user side. The function should return USYNERGY_TRUE if a
+connection was established or USYNERGY_FALSE if it could not connect.
+
+When network errors occur (e.g. uSynergySend or uSynergyReceive fail) then the connect call will be called again
+so the implementation of the function must close any old connections and clean up resources before retrying.
+
+@param cookie		Cookie supplied in the Synergy context
+**/
+typedef uSynergyBool (*uSynergyConnectFunc)(uSynergyCookie cookie);
+
+
+
+/**
+@brief Send function
+
+This function is called when uSynergy needs to send something over the default connection. It should return
+USYNERGY_TRUE if sending succeeded and USYNERGY_FALSE otherwise. This function should block until the send
+operation is completed.
+
+@param cookie		Cookie supplied in the Synergy context
+@param buffer		Address of buffer to send
+@param length		Length of buffer to send
+**/
+typedef uSynergyBool (*uSynergySendFunc)(uSynergyCookie cookie, const uint8_t *buffer, int length);
+
+
+
+/**
+@brief Receive function
+
+This function is called when uSynergy needs to receive data from the default connection. It should return
+USYNERGY_TRUE if receiving data succeeded and USYNERGY_FALSE otherwise. This function should block until data
+has been received and wait for data to become available. If @a outLength is set to 0 upon completion it is
+assumed that the connection is alive, but still in a connecting state and needs time to settle.
+
+@param cookie		Cookie supplied in the Synergy context
+@param buffer		Address of buffer to receive data into
+@param maxLength	Maximum amount of bytes to write into the receive buffer
+@param outLength	Address of integer that receives the actual amount of bytes written into @a buffer
+**/
+typedef uSynergyBool (*uSynergyReceiveFunc)(uSynergyCookie cookie, uint8_t *buffer, int maxLength, int* outLength);
+
+
+
+/**
+@brief Thread sleep function
+
+This function is called when uSynergy wants to suspend operation for a while before retrying an operation. It
+is mostly used when a socket times out or disconnect occurs to prevent uSynergy from continuously hammering a
+network connection in case the network is down.
+
+@param cookie		Cookie supplied in the Synergy context
+@param timeMs		Time to sleep the current thread (in milliseconds)
+**/
+typedef void		(*uSynergySleepFunc)(uSynergyCookie cookie, int timeMs);
+
+
+
+/**
+@brief Get time function
+
+This function is called when uSynergy needs to know the current time. This is used to determine when timeouts
+have occured. The time base should be a cyclic millisecond time value.
+
+@returns			Time value in milliseconds
+**/
+typedef uint32_t	(*uSynergyGetTimeFunc)();
+
+
+
+/**
+@brief Trace function
+
+This function is called when uSynergy wants to trace something. It is optional to show these messages, but they
+are often useful when debugging. uSynergy only traces major events like connecting and disconnecting. Usually
+only a single trace is shown when the connection is established and no more trace are called.
+
+@param cookie		Cookie supplied in the Synergy context
+@param text			Text to be traced
+**/
+typedef void		(*uSynergyTraceFunc)(uSynergyCookie cookie, const char *text);
+
+
+
+/**
+@brief Screen active callback
+
+This callback is called when Synergy makes the screen active or inactive. This
+callback is usually sent when the mouse enters or leaves the screen.
+
+@param cookie		Cookie supplied in the Synergy context
+@param active		Activation flag, 1 if the screen has become active, 0 if the screen has become inactive
+**/
+typedef void		(*uSynergyScreenActiveCallback)(uSynergyCookie cookie, uSynergyBool active);
+
+
+
+/**
+@brief Mouse callback
+
+This callback is called when a mouse events happens. The mouse X and Y position,
+wheel and button state is communicated in the message. It's up to the user to
+interpret if this is a mouse up, down, double-click or other message.
+
+@param cookie		Cookie supplied in the Synergy context
+@param x			Mouse X position
+@param y			Mouse Y position
+@param wheelX		Mouse wheel X position
+@param wheelY		Mouse wheel Y position
+@param buttonLeft	Left button pressed status, 0 for released, 1 for pressed
+@param buttonMiddle	Middle button pressed status, 0 for released, 1 for pressed
+@param buttonRight	Right button pressed status, 0 for released, 1 for pressed
+**/
+typedef void		(*uSynergyMouseCallback)(uSynergyCookie cookie, uint16_t x, uint16_t y, int16_t wheelX, int16_t wheelY, uSynergyBool buttonLeft, uSynergyBool buttonRight, uSynergyBool buttonMiddle);
+
+
+
+/**
+@brief Key event callback
+
+This callback is called when a key is pressed or released.
+
+@param cookie		Cookie supplied in the Synergy context
+@param key			Key code of key that was pressed or released
+@param modifiers	Status of modifier keys (alt, shift, etc.)
+@param down			Down or up status, 1 is key is pressed down, 0 if key is released (up)
+@param repeat		Repeat flag, 1 if the key is down because the key is repeating, 0 if the key is initially pressed by the user
+**/
+typedef void		(*uSynergyKeyboardCallback)(uSynergyCookie cookie, uint16_t key, uint16_t modifiers, uSynergyBool down, uSynergyBool repeat);
+
+
+
+/**
+@brief Joystick event callback
+
+This callback is called when a joystick stick or button changes. It is possible that multiple callbacks are
+fired when different sticks or buttons change as these are individual messages in the packet stream. Each
+callback will contain all the valid state for the different axes and buttons. The last callback received will
+represent the most current joystick state.
+
+@param cookie		Cookie supplied in the Synergy context
+@param joyNum		Joystick number, always in the range [0 ... USYNERGY_NUM_JOYSTICKS>
+@param buttons		Button pressed mask
+@param leftStickX	Left stick X position, in range [-127 ... 127]
+@param leftStickY	Left stick Y position, in range [-127 ... 127]
+@param rightStickX	Right stick X position, in range [-127 ... 127]
+@param rightStickY	Right stick Y position, in range [-127 ... 127]
+**/
+typedef void		(*uSynergyJoystickCallback)(uSynergyCookie cookie, uint8_t joyNum, uint16_t buttons, int8_t leftStickX, int8_t leftStickY, int8_t rightStickX, int8_t rightStickY);
+
+
+
+/**
+@brief Clipboard event callback
+
+This callback is called when something is placed on the clipboard. Multiple callbacks may be fired for
+multiple clipboard formats if they are supported. The data provided is read-only and may not be modified
+by the application.
+
+@param cookie		Cookie supplied in the Synergy context
+@param format		Clipboard format
+@param data			Memory area containing the clipboard raw data
+@param size			Size of clipboard data
+**/
+typedef void		(*uSynergyClipboardCallback)(uSynergyCookie cookie, enum uSynergyClipboardFormat format, const uint8_t *data, uint32_t size);
+
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Context
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief uSynergy context
+**/
+typedef struct
+{
+	/* Mandatory configuration data, filled in by client */
+	uSynergyConnectFunc				m_connectFunc;									/* Connect function */
+	uSynergySendFunc				m_sendFunc;										/* Send data function */
+	uSynergyReceiveFunc				m_receiveFunc;									/* Receive data function */
+	uSynergySleepFunc				m_sleepFunc;									/* Thread sleep function */
+	uSynergyGetTimeFunc				m_getTimeFunc;									/* Get current time function */
+	const char*						m_clientName;									/* Name of Synergy Screen / Client */
+	uint16_t						m_clientWidth;									/* Width of screen */
+	uint16_t						m_clientHeight;									/* Height of screen */
+
+	/* Optional configuration data, filled in by client */
+	uSynergyCookie					m_cookie;										/* Cookie pointer passed to callback functions (can be NULL) */
+	uSynergyTraceFunc				m_traceFunc;									/* Function for tracing status (can be NULL) */
+	uSynergyScreenActiveCallback	m_screenActiveCallback;							/* Callback for entering and leaving screen */
+	uSynergyMouseCallback			m_mouseCallback;								/* Callback for mouse events */
+	uSynergyKeyboardCallback		m_keyboardCallback;								/* Callback for keyboard events */
+	uSynergyJoystickCallback		m_joystickCallback;								/* Callback for joystick events */
+	uSynergyClipboardCallback		m_clipboardCallback;							/* Callback for clipboard events */
+
+	/* State data, used internall by client, initialized by uSynergyInit() */
+	uSynergyBool					m_connected;									/* Is our socket connected? */
+	uSynergyBool					m_hasReceivedHello;								/* Have we received a 'Hello' from the server? */
+	uSynergyBool					m_isCaptured;									/* Is Synergy active (i.e. this client is receiving input messages?) */
+	uint32_t						m_lastMessageTime;								/* Time at which last message was received */
+	uint32_t						m_sequenceNumber;								/* Packet sequence number */
+	uint8_t							m_receiveBuffer[USYNERGY_RECEIVE_BUFFER_SIZE];	/* Receive buffer */
+	int								m_receiveOfs;									/* Receive buffer offset */
+	uint8_t							m_replyBuffer[USYNERGY_REPLY_BUFFER_SIZE];		/* Reply buffer */
+	uint8_t*						m_replyCur;										/* Write offset into reply buffer */
+	uint16_t						m_mouseX;										/* Mouse X position */
+	uint16_t						m_mouseY;										/* Mouse Y position */
+	int16_t							m_mouseWheelX;									/* Mouse wheel X position */
+	int16_t							m_mouseWheelY;									/* Mouse wheel Y position */
+	uSynergyBool					m_mouseButtonLeft;								/* Mouse left button */
+	uSynergyBool					m_mouseButtonRight;								/* Mouse right button */
+	uSynergyBool					m_mouseButtonMiddle;							/* Mouse middle button */
+	int8_t							m_joystickSticks[USYNERGY_NUM_JOYSTICKS][4];	/* Joystick stick position in 2 axes for 2 sticks */
+	uint16_t						m_joystickButtons[USYNERGY_NUM_JOYSTICKS];		/* Joystick button state */
+} uSynergyContext;
+
+
+
+//---------------------------------------------------------------------------------------------------------------------
+//	Interface
+//---------------------------------------------------------------------------------------------------------------------
+
+
+
+/**
+@brief Initialize uSynergy context
+
+This function initializes @a context for use. Call this function directly after
+creating the context, before filling in any configuration data in it. Not calling
+this function will cause undefined behavior.
+
+@param context	Context to be initialized
+**/
+extern void		uSynergyInit(uSynergyContext *context);
+
+
+
+/**
+@brief Update uSynergy
+
+This function updates uSynergy and does the bulk of the work. It does connection management,
+receiving data, reconnecting after errors or timeouts and so on. It assumes that networking
+operations are blocking and it can suspend the current thread if it needs to wait. It is
+best practice to call uSynergyUpdate from a background thread so it is responsive.
+
+Because uSynergy relies mostly on blocking calls it will mostly stay in thread sleep state
+waiting for system mutexes and won't eat much memory.
+
+uSynergyUpdate doesn't do any memory allocations or have any side effects beyond those of
+the callbacks it calls.
+
+@param context	Context to be updated
+**/
+extern void		uSynergyUpdate(uSynergyContext *context);
+
+
+
+/**
+@brief Send clipboard data
+
+This function sets new clipboard data and sends it to the server. Use this function if
+your client cuts or copies data onto the clipboard that it needs to share with the
+server.
+
+Currently there is only support for plaintext, but HTML and image data could be
+supported with some effort.
+
+@param context	Context to send clipboard data to
+@param text		Text to set to the clipboard
+**/
+extern void		uSynergySendClipboard(uSynergyContext *context, const char *text);
+
+
+
+#ifdef __cplusplus
+};
+#endif

examples/marmalade_example/data/app.icf

@@ -0,0 +1,32 @@
+# This file is for configuration settings for your
+# application.
+#
+# The syntax is similar to windows .ini files ie
+#
+# [GroupName]
+# Setting = Value
+#
+# Which can be read by your application using
+#  e.g s3eConfigGetString("GroupName", "Setting", string)
+#
+# All settings must be documented in .config.txt files.
+# New settings specific to this application should be
+# documented in app.config.txt
+#
+# Some conditional operations are also permitted, see the
+# S3E documentation for details.
+
+[S3E]
+MemSize=6000000
+MemSizeDebug=6000000
+DispFixRot=FixedLandscape
+
+# emulate iphone 5 resolution, change these settings to emulate other display resolution
+WinWidth=1136
+WinHeight=640
+
+[GX]
+DataCacheSize=131070
+
+[Util] 
+#MemoryBreakpoint=1282

examples/marmalade_example/imgui_impl_marmalade.cpp

@@ -0,0 +1,317 @@
+// ImGui Marmalade binding with IwGx
+// In this binding, ImTextureID is used to store a 'CIwTexture*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// Copyright (C) 2015 by Giovanni Zito
+// This file is part of ImGui
+
+#include <imgui.h>
+#include "imgui_impl_marmalade.h"
+
+#include <s3eClipboard.h>
+#include <s3ePointer.h>
+#include <s3eKeyboard.h>
+#include <IwTexture.h>
+#include <IwGx.h>
+
+// Data
+static double       g_Time = 0.0f;
+static bool         g_MousePressed[3] = { false, false, false };
+static float        g_MouseWheel = 0.0f;
+static CIwTexture*  g_FontTexture = NULL;
+static char*        g_ClipboardText = NULL;
+static bool         g_osdKeyboardEnabled = false;
+
+// use this setting to scale the interface - e.g. on device you could use 2 or 3 scale factor
+static ImVec2       g_scale = ImVec2(1.0f,1.0f);
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+void ImGui_Marmalade_RenderDrawLists(ImDrawData* draw_data)
+{
+    // Handle cases of screen coordinates != from framebuffer coordinates (e.g. retina displays)
+    ImGuiIO& io = ImGui::GetIO();
+    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
+
+    // Render command lists
+    for(int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const unsigned char* vtx_buffer = (const unsigned char*)&cmd_list->VtxBuffer.front();
+        const ImDrawIdx* idx_buffer = &cmd_list->IdxBuffer.front();
+        int nVert = cmd_list->VtxBuffer.size();
+        CIwFVec2* pVertStream = IW_GX_ALLOC(CIwFVec2, nVert);
+        CIwFVec2* pUVStream = IW_GX_ALLOC(CIwFVec2, nVert);
+        CIwColour* pColStream = IW_GX_ALLOC(CIwColour, nVert);
+
+        for( int i=0; i < nVert; i++ )
+        {
+            // TODO: optimize multiplication on gpu using vertex shader
+            pVertStream[i].x = cmd_list->VtxBuffer[i].pos.x * g_scale.x;
+            pVertStream[i].y = cmd_list->VtxBuffer[i].pos.y * g_scale.y;
+            pUVStream[i].x = cmd_list->VtxBuffer[i].uv.x;
+            pUVStream[i].y = cmd_list->VtxBuffer[i].uv.y;
+            pColStream[i] = cmd_list->VtxBuffer[i].col;
+        }
+
+        IwGxSetVertStreamScreenSpace(pVertStream, nVert);
+        IwGxSetUVStream(pUVStream);
+        IwGxSetColStream(pColStream, nVert);
+        IwGxSetNormStream(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)
+            {
+                pcmd->UserCallback(cmd_list,pcmd);
+            }
+            else
+            {
+                CIwMaterial* pCurrentMaterial = IW_GX_ALLOC_MATERIAL();
+                pCurrentMaterial->SetShadeMode(CIwMaterial::SHADE_FLAT);
+                pCurrentMaterial->SetCullMode(CIwMaterial::CULL_NONE);
+                pCurrentMaterial->SetFiltering(false);
+                pCurrentMaterial->SetAlphaMode(CIwMaterial::ALPHA_BLEND);
+                pCurrentMaterial->SetDepthWriteMode(CIwMaterial::DEPTH_WRITE_NORMAL);
+                pCurrentMaterial->SetAlphaTestMode(CIwMaterial::ALPHATEST_DISABLED);
+                pCurrentMaterial->SetTexture((CIwTexture*)pcmd->TextureId);
+                IwGxSetMaterial(pCurrentMaterial);
+                IwGxDrawPrims(IW_GX_TRI_LIST, (uint16*)idx_buffer, pcmd->ElemCount);
+            }
+            idx_buffer += pcmd->ElemCount;
+        }
+        IwGxFlush();
+    }
+
+    // TODO: restore modified state (i.e. mvp matrix)
+}
+
+static const char* ImGui_Marmalade_GetClipboardText()
+{
+    if (s3eClipboardAvailable())
+    {
+        int size = s3eClipboardGetText(NULL, 0);
+        if (size > 0)
+        {
+            if (g_ClipboardText)
+            {
+                delete[] g_ClipboardText;
+                g_ClipboardText = NULL;
+            }
+            g_ClipboardText = new char[size];
+            g_ClipboardText[0] = '\0';
+            s3eClipboardGetText(g_ClipboardText, size);
+        }
+    }
+
+    return g_ClipboardText;
+}
+
+static void ImGui_Marmalade_SetClipboardText(const char* text)
+{
+    if (s3eClipboardAvailable())
+        s3eClipboardSetText(text);
+}
+
+int32 ImGui_Marmalade_PointerButtonEventCallback(void* SystemData, void* pUserData)
+{
+    // pEvent->m_Button is of type s3ePointerButton and indicates which mouse
+    // button was pressed.  For touchscreen this should always have the value
+    // S3E_POINTER_BUTTON_SELECT
+    s3ePointerEvent* pEvent = (s3ePointerEvent*)SystemData;
+
+    if (pEvent->m_Pressed == 1)
+    {
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_LEFTMOUSE)
+            g_MousePressed[0] = true;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_RIGHTMOUSE)
+            g_MousePressed[1] = true;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_MIDDLEMOUSE)
+            g_MousePressed[2] = true;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_MOUSEWHEELUP)
+            g_MouseWheel += pEvent->m_y;
+        if (pEvent->m_Button == S3E_POINTER_BUTTON_MOUSEWHEELDOWN)
+            g_MouseWheel += pEvent->m_y;
+    }
+
+    return 0;
+}
+
+int32 ImGui_Marmalade_KeyCallback(void* SystemData, void* userData)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    s3eKeyboardEvent* e = (s3eKeyboardEvent*)SystemData;
+    if (e->m_Pressed == 1)
+        io.KeysDown[e->m_Key] = true;
+    if (e->m_Pressed == 0)
+        io.KeysDown[e->m_Key] = false;
+
+    io.KeyCtrl = s3eKeyboardGetState(s3eKeyLeftControl) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightControl) == S3E_KEY_STATE_DOWN;
+    io.KeyShift = s3eKeyboardGetState(s3eKeyLeftShift) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightShift) == S3E_KEY_STATE_DOWN;
+    io.KeyAlt = s3eKeyboardGetState(s3eKeyLeftAlt) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightAlt) == S3E_KEY_STATE_DOWN;
+    io.KeySuper = s3eKeyboardGetState(s3eKeyLeftWindows) == S3E_KEY_STATE_DOWN || s3eKeyboardGetState(s3eKeyRightWindows) == S3E_KEY_STATE_DOWN;
+
+    return 0;
+}
+
+int32 ImGui_Marmalade_CharCallback(void* SystemData, void* userData)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    s3eKeyboardCharEvent* e = (s3eKeyboardCharEvent*)SystemData;
+    if ((e->m_Char > 0 && e->m_Char < 0x10000))
+        io.AddInputCharacter((unsigned short)e->m_Char);
+
+    return 0;
+}
+
+bool ImGui_Marmalade_CreateDeviceObjects()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+
+    // Upload texture to graphics system
+    g_FontTexture = new CIwTexture();
+    g_FontTexture->SetModifiable(true);
+    CIwImage& image = g_FontTexture->GetImage();
+    image.SetFormat(CIwImage::ARGB_8888);
+    image.SetWidth(width);
+    image.SetHeight(height);
+    image.SetBuffers();                                    // allocates and own buffers
+    image.ReadTexels(pixels);
+    g_FontTexture->SetMipMapping(false);
+    g_FontTexture->SetFiltering(false);
+    g_FontTexture->Upload();
+
+    // Store our identifier
+    io.Fonts->TexID = (void *)g_FontTexture;
+
+    return true;
+}
+
+void    ImGui_Marmalade_InvalidateDeviceObjects()
+{
+    if (g_ClipboardText)
+    {
+        delete[] g_ClipboardText;
+        g_ClipboardText = NULL;
+    }
+
+    if (g_FontTexture)
+    {
+        delete g_FontTexture;
+        ImGui::GetIO().Fonts->TexID = 0;
+        g_FontTexture = NULL;
+    }
+}
+
+bool    ImGui_Marmalade_Init(bool install_callbacks)
+{
+    IwGxInit();
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = s3eKeyTab;                     // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = s3eKeyLeft;
+    io.KeyMap[ImGuiKey_RightArrow] = s3eKeyRight;
+    io.KeyMap[ImGuiKey_UpArrow] = s3eKeyUp;
+    io.KeyMap[ImGuiKey_DownArrow] = s3eKeyDown;
+    io.KeyMap[ImGuiKey_PageUp] = s3eKeyPageUp;
+    io.KeyMap[ImGuiKey_PageDown] = s3eKeyPageDown;
+    io.KeyMap[ImGuiKey_Home] = s3eKeyHome;
+    io.KeyMap[ImGuiKey_End] = s3eKeyEnd;
+    io.KeyMap[ImGuiKey_Delete] = s3eKeyDelete;
+    io.KeyMap[ImGuiKey_Backspace] = s3eKeyBackspace;
+    io.KeyMap[ImGuiKey_Enter] = s3eKeyEnter;
+    io.KeyMap[ImGuiKey_Escape] = s3eKeyEsc;
+    io.KeyMap[ImGuiKey_A] = s3eKeyA;
+    io.KeyMap[ImGuiKey_C] = s3eKeyC;
+    io.KeyMap[ImGuiKey_V] = s3eKeyV;
+    io.KeyMap[ImGuiKey_X] = s3eKeyX;
+    io.KeyMap[ImGuiKey_Y] = s3eKeyY;
+    io.KeyMap[ImGuiKey_Z] = s3eKeyZ;
+
+    io.RenderDrawListsFn = ImGui_Marmalade_RenderDrawLists;      // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+    io.SetClipboardTextFn = ImGui_Marmalade_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_Marmalade_GetClipboardText;
+
+    if (install_callbacks)
+    {
+        s3ePointerRegister(S3E_POINTER_BUTTON_EVENT, ImGui_Marmalade_PointerButtonEventCallback, 0);
+        s3eKeyboardRegister(S3E_KEYBOARD_KEY_EVENT, ImGui_Marmalade_KeyCallback, 0);
+        s3eKeyboardRegister(S3E_KEYBOARD_CHAR_EVENT, ImGui_Marmalade_CharCallback, 0);
+    }
+
+    return true;
+}
+
+void ImGui_Marmalade_Shutdown()
+{
+    ImGui_Marmalade_InvalidateDeviceObjects();
+    ImGui::Shutdown();
+    IwGxTerminate();
+}
+
+void ImGui_Marmalade_NewFrame()
+{
+    if (!g_FontTexture)
+        ImGui_Marmalade_CreateDeviceObjects();
+
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w = IwGxGetScreenWidth(), h = IwGxGetScreenHeight();
+    io.DisplaySize = ImVec2((float)w, (float)h);
+     // For retina display or other situations where window coordinates are different from framebuffer coordinates. User storage only, presently not used by ImGui.
+    io.DisplayFramebufferScale = g_scale;
+
+    // Setup time step
+    double current_time = s3eTimerGetUST() / 1000.0f;
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    double mouse_x, mouse_y;
+    mouse_x = s3ePointerGetX();
+    mouse_y = s3ePointerGetY();
+    io.MousePos = ImVec2((float)mouse_x/g_scale.x, (float)mouse_y/g_scale.y);   // Mouse position in screen coordinates (set to -1,-1 if no mouse / on another screen, etc.)
+
+    for (int i = 0; i < 3; i++)
+    {
+        io.MouseDown[i] = g_MousePressed[i] || s3ePointerGetState((s3ePointerButton)i) != S3E_POINTER_STATE_UP;    // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+        g_MousePressed[i] = false;
+    }
+
+    io.MouseWheel = g_MouseWheel;
+    g_MouseWheel = 0.0f;
+
+    // TODO: Hide OS mouse cursor if ImGui is drawing it
+    // s3ePointerSetInt(S3E_POINTER_HIDE_CURSOR,(io.MouseDrawCursor ? 0 : 1));
+
+    // Start the frame
+    ImGui::NewFrame();
+
+     // Show/hide OSD keyboard
+    if (io.WantTextInput)
+    {
+        // Some text input widget is active?
+        if (!g_osdKeyboardEnabled)
+        {
+            g_osdKeyboardEnabled = true;
+            s3eKeyboardSetInt(S3E_KEYBOARD_GET_CHAR, 1);    // show OSD keyboard
+        }
+    }
+    else
+    {
+        // No text input widget is active
+        if (g_osdKeyboardEnabled)
+        {
+            g_osdKeyboardEnabled = false;
+            s3eKeyboardSetInt(S3E_KEYBOARD_GET_CHAR, 0);    // hide OSD keyboard
+        }
+    }
+}

examples/marmalade_example/imgui_impl_marmalade.h

@@ -0,0 +1,24 @@
+// ImGui Marmalade binding with IwGx
+// In this binding, ImTextureID is used to store a 'CIwTexture*' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+// Copyright (C) 2015 by Giovanni Zito
+// This file is part of ImGui
+
+IMGUI_API bool        ImGui_Marmalade_Init(bool install_callbacks);
+IMGUI_API void        ImGui_Marmalade_Shutdown();
+IMGUI_API void        ImGui_Marmalade_NewFrame();
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_API void        ImGui_Marmalade_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_Marmalade_CreateDeviceObjects();
+
+// callbacks (installed by default if you enable 'install_callbacks' during initialization)
+// You can also handle inputs yourself and use those as a reference.
+IMGUI_API int32       ImGui_Marmalade_PointerButtonEventCallback(void* SystemData, void* pUserData);
+IMGUI_API int32       ImGui_Marmalade_KeyCallback(void* SystemData, void* userData);
+IMGUI_API int32       ImGui_Marmalade_CharCallback(void* SystemData, void* userData);

examples/marmalade_example/main.cpp

@@ -0,0 +1,85 @@
+// ImGui - standalone example application for Marmalade
+// If you are new to 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
+
+#include <imgui.h>
+#include "imgui_impl_marmalade.h"
+#include <stdio.h>
+
+#include <s3eKeyboard.h>
+#include <s3ePointer.h>
+#include <IwGx.h>
+
+int main(int, char**)
+{
+    // Setup ImGui binding
+    ImGui_Marmalade_Init(true);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+    bool show_test_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImColor(114, 144, 154);
+
+    // Main loop
+    while (true)
+    {
+         if (s3eDeviceCheckQuitRequest())
+             break;
+
+         s3eKeyboardUpdate();
+         s3ePointerUpdate();
+         ImGui_Marmalade_NewFrame();
+
+        // 1. Show a simple window
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        {
+            static float f = 0.0f;
+            ImGui::Text("Hello, world!");
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+            ImGui::ColorEdit3("clear color", (float*)&clear_color);
+            if (ImGui::Button("Test Window")) show_test_window ^= 1;
+            if (ImGui::Button("Another Window")) show_another_window ^= 1;
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        }
+
+        // 2. Show another simple window, this time using an explicit Begin/End pair
+        if (show_another_window)
+        {
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Text("Hello");
+            ImGui::End();
+        }
+
+        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
+        if (show_test_window)
+        {
+            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
+            ImGui::ShowTestWindow(&show_test_window);
+        }
+
+        // Rendering
+        IwGxSetColClear(clear_color.x*255,clear_color.y*255,clear_color.z*255,clear_color.w*255) ;
+        IwGxClear();
+        ImGui::Render();
+        IwGxSwapBuffers();
+
+        s3eDeviceYield(0);
+    }
+
+    // Cleanup
+    ImGui_Marmalade_Shutdown();
+
+    return 0;
+}

examples/marmalade_example/marmalade_example.mkb

@@ -0,0 +1,44 @@
+#!/usr/bin/env mkb
+
+# ImGui - standalone example application for Marmalade
+# Copyright (C) 2015 by Giovanni Zito
+# This file is part of ImGui
+# https://github.com/ocornut/imgui
+
+define IMGUI_DISABLE_INCLUDE_IMCONFIG_H
+define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCS
+define IMGUI_DISABLE_WIN32_DEFAULT_IME_FUNCS
+define _snprintf=snprintf
+
+options
+{
+    optimise-speed=1
+}
+
+includepaths
+{
+    ../..
+}
+
+subprojects
+{
+    iwgx
+}
+
+files
+{
+    (.)
+    ["imgui"]
+    ../../imgui.cpp
+    ../../imgui_demo.cpp
+    ../../imgui_draw.cpp
+    ../../imconfig.h
+    ../../imgui.h
+   ../../imgui_internal.h
+
+    ["imgui","Marmalade binding"]
+    imgui_impl_marmalade.h
+    imgui_impl_marmalade.cpp
+    main.cpp
+
+}

examples/opengl3_example/Makefile

@@ -10,8 +10,9 @@
 
 #CXX = g++
 
+EXE = opengl3_example
 OBJS = main.o imgui_impl_glfw_gl3.o
-OBJS += ../../imgui.o
+OBJS += ../../imgui.o ../../imgui_demo.o ../../imgui_draw.o
 OBJS += ../libs/gl3w/GL/gl3w.o
 
 UNAME_S := $(shell uname -s)
@@ -19,34 +20,42 @@ UNAME_S := $(shell uname -s)
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS = `pkg-config --static --libs glfw3`
+	LIBS = -lGL `pkg-config --static --libs glfw3`
 
 	CXXFLAGS = -I../../ -I../libs/gl3w `pkg-config --cflags glfw3`
-	CXXFLAGS += -Wall
+	CXXFLAGS += -Wall -Wformat
 	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
-	LIBS += -lglfw3
+	LIBS += -L/usr/local/lib -lglfw3
 
 	CXXFLAGS = -I../../ -I../libs/gl3w -I/usr/local/Cellar/glew/1.10.0/include -I/usr/local/include
-	CXXFLAGS += -Wall
+	CXXFLAGS += -Wall -Wformat
 #	CXXFLAGS += -D__APPLE__
 	CFLAGS = $(CXXFLAGS)
 endif
 
+ifeq ($(UNAME_S), MINGW64_NT-6.3)
+   ECHO_MESSAGE = "Windows"
+   LIBS = -lglfw3 -lgdi32 -lopengl32 -limm32
+
+   CXXFLAGS = -I../../ -I../libs/gl3w `pkg-config --cflags glfw3`
+   CXXFLAGS += -Wall -Wformat
+   CFLAGS = $(CXXFLAGS)
+endif
+
+
 .cpp.o:
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 
-all:imgui_example
+all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 
-imgui_example:$(OBJS)
-	$(CXX) -o imgui_example $(OBJS) $(CXXFLAGS) $(LIBS)
+$(EXE): $(OBJS)
+	$(CXX) -o $(EXE) $(OBJS) $(CXXFLAGS) $(LIBS)
 
 clean:
-	rm $(OBJS)
-
+	rm $(EXE) $(OBJS)

examples/opengl3_example/build_win32.bat

@@ -0,0 +1,3 @@
+@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 ..\libs\glfw\include /I ..\libs\gl3w *.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/opengl_example3.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib

examples/opengl3_example/imgui_impl_glfw_gl3.cpp

@@ -1,4 +1,9 @@
 // ImGui GLFW binding with OpenGL3 + shaders
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 #include <imgui.h>
@@ -7,7 +12,7 @@
 // GL3W/GLFW
 #include <GL/gl3w.h>
 #include <GLFW/glfw3.h>
-#ifdef _MSC_VER
+#ifdef _WIN32
 #undef APIENTRY
 #define GLFW_EXPOSE_NATIVE_WIN32
 #define GLFW_EXPOSE_NATIVE_WGL
@@ -23,21 +28,38 @@ static GLuint       g_FontTexture = 0;
 static int          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 size_t       g_VboSize = 0;
-static unsigned int g_VboHandle = 0, g_VaoHandle = 0;
+static unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0;
 
 // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
 // If text or lines are blurry when integrating ImGui in your engine:
 // - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
-static void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
+void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawData* draw_data)
 {
-    if (cmd_lists_count == 0)
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    ImGuiIO& io = ImGui::GetIO();
+    int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
+    int fb_height = (int)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
+    if (fb_width == 0 || fb_height == 0)
         return;
+    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
+
+    // Backup GL state
+    GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+    GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
+    GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+    GLint last_blend_src; glGetIntegerv(GL_BLEND_SRC, &last_blend_src);
+    GLint last_blend_dst; glGetIntegerv(GL_BLEND_DST, &last_blend_dst);
+    GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
+    GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    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
-    GLint last_program, last_texture;
-    glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
-    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
     glEnable(GL_BLEND);
     glBlendEquation(GL_FUNC_ADD);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@@ -46,74 +68,60 @@ static void ImGui_ImplGlfwGL3_RenderDrawLists(ImDrawList** const cmd_lists, int
     glEnable(GL_SCISSOR_TEST);
     glActiveTexture(GL_TEXTURE0);
 
-    // Setup orthographic projection matrix
-    const float width = ImGui::GetIO().DisplaySize.x;
-    const float height = ImGui::GetIO().DisplaySize.y;
+    // Setup viewport, orthographic projection matrix
+    glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
     const float ortho_projection[4][4] =
     {
-        { 2.0f/width,	0.0f,			0.0f,		0.0f },
-        { 0.0f,			2.0f/-height,	0.0f,		0.0f },
+        { 2.0f/io.DisplaySize.x, 0.0f,                   0.0f, 0.0f },
+        { 0.0f,                  2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
         { 0.0f,                  0.0f,                  -1.0f, 0.0f },
-        { -1.0f,		1.0f,			0.0f,		1.0f },
+        {-1.0f,                  1.0f,                   0.0f, 1.0f },
     };
     glUseProgram(g_ShaderHandle);
     glUniform1i(g_AttribLocationTex, 0);
     glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
-
-    // Grow our buffer according to what we need
-    size_t total_vtx_count = 0;
-    for (int n = 0; n < cmd_lists_count; n++)
-        total_vtx_count += cmd_lists[n]->vtx_buffer.size();
-    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
-    size_t needed_vtx_size = total_vtx_count * sizeof(ImDrawVert);
-    if (g_VboSize < needed_vtx_size)
-    {
-        g_VboSize = needed_vtx_size + 5000 * sizeof(ImDrawVert);  // Grow buffer
-        glBufferData(GL_ARRAY_BUFFER, g_VboSize, NULL, GL_STREAM_DRAW);
-    }
-
-    // Copy and convert all vertices into a single contiguous buffer
-    unsigned char* buffer_data = (unsigned char*)glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
-    if (!buffer_data)
-        return;
-    for (int n = 0; n < cmd_lists_count; n++)
-    {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        memcpy(buffer_data, &cmd_list->vtx_buffer[0], cmd_list->vtx_buffer.size() * sizeof(ImDrawVert));
-        buffer_data += cmd_list->vtx_buffer.size() * sizeof(ImDrawVert);
-    }
-    glUnmapBuffer(GL_ARRAY_BUFFER);
-    glBindBuffer(GL_ARRAY_BUFFER, 0);
     glBindVertexArray(g_VaoHandle);
 
-    int cmd_offset = 0;
-    for (int n = 0; n < cmd_lists_count; n++)
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        int vtx_offset = cmd_offset;
-        const ImDrawCmd* pcmd_end = cmd_list->commands.end();
-        for (const ImDrawCmd* pcmd = cmd_list->commands.begin(); pcmd != pcmd_end; pcmd++)
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const ImDrawIdx* idx_buffer_offset = 0;
+
+        glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+        glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.size() * sizeof(ImDrawVert), (GLvoid*)&cmd_list->VtxBuffer.front(), GL_STREAM_DRAW);
+
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx), (GLvoid*)&cmd_list->IdxBuffer.front(), GL_STREAM_DRAW);
+
+        for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != cmd_list->CmdBuffer.end(); pcmd++)
         {
-            if (pcmd->user_callback)
+            if (pcmd->UserCallback)
             {
-                pcmd->user_callback(cmd_list, pcmd);
+                pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id);
-                glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
-                glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
+                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+                glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
+                glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
             }
-            vtx_offset += pcmd->vtx_count;
+            idx_buffer_offset += pcmd->ElemCount;
         }
-        cmd_offset = vtx_offset;
     }
 
-    // Restore modified state
-    glBindVertexArray(0);
+    // Restore modified GL state
     glUseProgram(last_program);
-    glDisable(GL_SCISSOR_TEST);
     glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindVertexArray(last_vertex_array);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+    glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+    glBlendFunc(last_blend_src, last_blend_dst);
+    if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
+    if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
+    if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
+    if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
+    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
 }
 
 static const char* ImGui_ImplGlfwGL3_GetClipboardText()
@@ -149,6 +157,7 @@ void ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow*, int key, int, int action, int mo
     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_ImplGlfwGL3_CharCallback(GLFWwindow*, unsigned int c)
@@ -158,14 +167,17 @@ void ImGui_ImplGlfwGL3_CharCallback(GLFWwindow*, unsigned int c)
         io.AddInputCharacter((unsigned short)c);
 }
 
-void ImGui_ImplGlfwGL3_CreateFontsTexture()
+bool ImGui_ImplGlfwGL3_CreateFontsTexture()
 {
+    // Build texture atlas
     ImGuiIO& io = ImGui::GetIO();
-
     unsigned char* pixels;
     int width, height;
     io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
 
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
     glGenTextures(1, &g_FontTexture);
     glBindTexture(GL_TEXTURE_2D, g_FontTexture);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -175,13 +187,20 @@ void ImGui_ImplGlfwGL3_CreateFontsTexture()
     // Store our identifier
     io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
 
-    // Cleanup (don't clear the input data if you want to append new fonts later)
-    io.Fonts->ClearInputData();
-    io.Fonts->ClearTexData();
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+
+    return true;
 }
 
 bool ImGui_ImplGlfwGL3_CreateDeviceObjects()
 {
+    // Backup GL state
+    GLint last_texture, last_array_buffer, last_vertex_array;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+    glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+
     const GLchar *vertex_shader =
         "#version 330\n"
         "uniform mat4 ProjMtx;\n"
@@ -226,6 +245,7 @@ bool ImGui_ImplGlfwGL3_CreateDeviceObjects()
     g_AttribLocationColor = glGetAttribLocation(g_ShaderHandle, "Color");
 
     glGenBuffers(1, &g_VboHandle);
+    glGenBuffers(1, &g_ElementsHandle);
 
     glGenVertexArrays(1, &g_VaoHandle);
     glBindVertexArray(g_VaoHandle);
@@ -239,61 +259,23 @@ bool ImGui_ImplGlfwGL3_CreateDeviceObjects()
     glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv));
     glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col));
 #undef OFFSETOF
-    glBindVertexArray(0);
-    glBindBuffer(GL_ARRAY_BUFFER, 0);
 
     ImGui_ImplGlfwGL3_CreateFontsTexture();
 
-    return true;
-}
-
-bool    ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks)
-{
-    g_Window = window;
-
-    ImGuiIO& io = ImGui::GetIO();
-    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;                 // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
-    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
-    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
-    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
-    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
-    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
-    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
-    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
-    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
-    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
-    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
-    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
-    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
-    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
-    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
-    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
-    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
-
-    io.RenderDrawListsFn = ImGui_ImplGlfwGL3_RenderDrawLists;
-    io.SetClipboardTextFn = ImGui_ImplGlfwGL3_SetClipboardText;
-    io.GetClipboardTextFn = ImGui_ImplGlfwGL3_GetClipboardText;
-#ifdef _MSC_VER
-    io.ImeWindowHandle = glfwGetWin32Window(g_Window);
-#endif
-
-    if (install_callbacks)
-    {
-        glfwSetMouseButtonCallback(window, ImGui_ImplGlfwGL3_MouseButtonCallback);
-        glfwSetScrollCallback(window, ImGui_ImplGlfwGL3_ScrollCallback);
-        glfwSetKeyCallback(window, ImGui_ImplGlfwGL3_KeyCallback);
-        glfwSetCharCallback(window, ImGui_ImplGlfwGL3_CharCallback);
-    }
+    // Restore modified GL state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBindVertexArray(last_vertex_array);
 
     return true;
 }
 
-void ImGui_ImplGlfwGL3_Shutdown()
+void    ImGui_ImplGlfwGL3_InvalidateDeviceObjects()
 {
     if (g_VaoHandle) glDeleteVertexArrays(1, &g_VaoHandle);
     if (g_VboHandle) glDeleteBuffers(1, &g_VboHandle);
-    g_VaoHandle = 0;
-    g_VboHandle = 0;
+    if (g_ElementsHandle) glDeleteBuffers(1, &g_ElementsHandle);
+    g_VaoHandle = g_VboHandle = g_ElementsHandle = 0;
 
     glDetachShader(g_ShaderHandle, g_VertHandle);
     glDeleteShader(g_VertHandle);
@@ -312,6 +294,54 @@ void ImGui_ImplGlfwGL3_Shutdown()
         ImGui::GetIO().Fonts->TexID = 0;
         g_FontTexture = 0;
     }
+}
+
+bool    ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks)
+{
+    g_Window = window;
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;                         // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
+    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
+    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
+    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
+    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
+    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+
+    io.RenderDrawListsFn = ImGui_ImplGlfwGL3_RenderDrawLists;       // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+    io.SetClipboardTextFn = ImGui_ImplGlfwGL3_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplGlfwGL3_GetClipboardText;
+#ifdef _WIN32
+    io.ImeWindowHandle = glfwGetWin32Window(g_Window);
+#endif
+
+    if (install_callbacks)
+    {
+        glfwSetMouseButtonCallback(window, ImGui_ImplGlfwGL3_MouseButtonCallback);
+        glfwSetScrollCallback(window, ImGui_ImplGlfwGL3_ScrollCallback);
+        glfwSetKeyCallback(window, ImGui_ImplGlfwGL3_KeyCallback);
+        glfwSetCharCallback(window, ImGui_ImplGlfwGL3_CharCallback);
+    }
+
+    return true;
+}
+
+void ImGui_ImplGlfwGL3_Shutdown()
+{
+    ImGui_ImplGlfwGL3_InvalidateDeviceObjects();
     ImGui::Shutdown();
 }
 
@@ -327,7 +357,8 @@ void ImGui_ImplGlfwGL3_NewFrame()
     int display_w, display_h;
     glfwGetWindowSize(g_Window, &w, &h);
     glfwGetFramebufferSize(g_Window, &display_w, &display_h);
-    io.DisplaySize = ImVec2((float)display_w, (float)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);
 
     // Setup time step
     double current_time =  glfwGetTime();
@@ -340,9 +371,7 @@ void ImGui_ImplGlfwGL3_NewFrame()
     {
         double mouse_x, mouse_y;
         glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
-    	mouse_x *= (float)display_w / w;                        // Convert mouse coordinates to pixels
-    	mouse_y *= (float)display_h / h;
-    	io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);   // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
+        io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);   // Mouse position in screen coordinates (set to -1,-1 if no mouse / on another screen, etc.)
     }
     else
     {

examples/opengl3_example/imgui_impl_glfw_gl3.h

@@ -1,20 +1,25 @@
 // ImGui GLFW binding with OpenGL3 + shaders
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 struct GLFWwindow;
 
-bool        ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks);
-void        ImGui_ImplGlfwGL3_Shutdown();
-void        ImGui_ImplGlfwGL3_NewFrame();
+IMGUI_API bool        ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks);
+IMGUI_API void        ImGui_ImplGlfwGL3_Shutdown();
+IMGUI_API void        ImGui_ImplGlfwGL3_NewFrame();
 
 // Use if you want to reset your rendering device without losing ImGui state.
-void        ImGui_ImplGlfwGL3_InvalidateDeviceObjects();
-bool        ImGui_ImplGlfwGL3_CreateDeviceObjects();
+IMGUI_API void        ImGui_ImplGlfwGL3_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplGlfwGL3_CreateDeviceObjects();
 
 // 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.
-void        ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
-void        ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
-void        ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
-void        ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c);
+IMGUI_API void        ImGui_ImplGlfwGL3_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+IMGUI_API void        ImGui_ImplGlfwGL3_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
+IMGUI_API void        ImGui_ImplGlfwGL3_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+IMGUI_API void        ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c);

examples/opengl3_example/main.cpp

@@ -1,4 +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.
 
 #include <imgui.h>
 #include "imgui_impl_glfw_gl3.h"
@@ -16,7 +17,7 @@ int main(int, char**)
     // Setup window
     glfwSetErrorCallback(error_callback);
     if (!glfwInit())
-        exit(1);
+        return 1;
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
@@ -29,13 +30,16 @@ int main(int, char**)
 
     // Setup ImGui binding
     ImGui_ImplGlfwGL3_Init(window, true);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
     //ImGuiIO& io = ImGui::GetIO();
-    //ImFont* my_font0 = io.Fonts->AddFontDefault();
-    //ImFont* my_font1 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
-    //ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/Karla-Regular.ttf", 16.0f);
-    //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
-    //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
-    //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
 
     bool show_test_window = true;
     bool show_another_window = false;
@@ -44,7 +48,6 @@ int main(int, char**)
     // Main loop
     while (!glfwWindowShouldClose(window))
     {
-        ImGuiIO& io = ImGui::GetIO();
         glfwPollEvents();
         ImGui_ImplGlfwGL3_NewFrame();
 
@@ -77,7 +80,9 @@ int main(int, char**)
         }
 
         // Rendering
-        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+        int display_w, display_h;
+        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::Render();

examples/opengl3_example/opengl3_example.vcxproj

@@ -149,6 +149,8 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\..\imgui.cpp" />
+    <ClCompile Include="..\..\imgui_demo.cpp" />
+    <ClCompile Include="..\..\imgui_draw.cpp" />
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
     <ClCompile Include="imgui_impl_glfw_gl3.cpp" />
     <ClCompile Include="main.cpp" />
@@ -156,10 +158,14 @@
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h" />
     <ClInclude Include="..\..\imgui.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
     <ClInclude Include="..\libs\gl3w\GL\gl3w.h" />
     <ClInclude Include="..\libs\gl3w\GL\glcorearb.h" />
     <ClInclude Include="imgui_impl_glfw_gl3.h" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

examples/opengl3_example/opengl3_example.vcxproj.filters

@@ -25,6 +25,12 @@
     <ClCompile Include="..\libs\gl3w\GL\gl3w.c">
       <Filter>gl3w</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
@@ -42,5 +48,11 @@
     <ClInclude Include="..\libs\gl3w\GL\glcorearb.h">
       <Filter>gl3w</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
   </ItemGroup>
 </Project>

examples/opengl_example/Makefile

@@ -10,42 +10,51 @@
 
 #CXX = g++
 
+EXE = opengl_example
 OBJS = main.o imgui_impl_glfw.o
-OBJS += ../../imgui.o
+OBJS += ../../imgui.o ../../imgui_demo.o ../../imgui_draw.o
 
 UNAME_S := $(shell uname -s)
 
 
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
-	LIBS = `pkg-config --static --libs glfw3`
+	LIBS = -lGL `pkg-config --static --libs glfw3`
 
 	CXXFLAGS = -I../../ `pkg-config --cflags glfw3`
-	CXXFLAGS += -Wall
+	CXXFLAGS += -Wall -Wformat
 	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
-	LIBS += -lglfw3
+	LIBS += -L/usr/local/lib -lglfw3
 
 	CXXFLAGS = -I../../ -I/usr/local/include
-	CXXFLAGS += -Wall
+	CXXFLAGS += -Wall -Wformat
 #	CXXFLAGS += -D__APPLE__
 	CFLAGS = $(CXXFLAGS)
 endif
 
+ifeq ($(UNAME_S), MINGW64_NT-6.3)
+   ECHO_MESSAGE = "Windows"
+   LIBS = -lglfw3 -lgdi32 -lopengl32 -limm32
+
+   CXXFLAGS = -I../../ -I../libs/gl3w `pkg-config --cflags glfw3`
+   CXXFLAGS += -Wall -Wformat
+   CFLAGS = $(CXXFLAGS)
+endif
+
 .cpp.o:
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 
-all:imgui_example
+all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 
-imgui_example:$(OBJS)
-	$(CXX) -o imgui_example $(OBJS) $(CXXFLAGS) $(LIBS)
+$(EXE): $(OBJS)
+	$(CXX) -o $(EXE) $(OBJS) $(CXXFLAGS) $(LIBS)
 
 clean:
-	rm $(OBJS)
+	rm $(EXE) $(OBJS)
 

examples/opengl_example/build_win32.bat

@@ -0,0 +1,3 @@
+@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 ..\libs\glfw\include *.cpp ..\..\*.cpp /FeDebug/opengl_example.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib

examples/opengl_example/imgui_impl_glfw.cpp

@@ -1,4 +1,9 @@
 // ImGui GLFW binding with OpenGL
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 #include <imgui.h>
@@ -6,7 +11,7 @@
 
 // GLFW
 #include <GLFW/glfw3.h>
-#ifdef _MSC_VER
+#ifdef _WIN32
 #undef APIENTRY
 #define GLFW_EXPOSE_NATIVE_WIN32
 #define GLFW_EXPOSE_NATIVE_WGL
@@ -23,14 +28,20 @@ static GLuint       g_FontTexture = 0;
 // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
 // If text or lines are blurry when integrating ImGui in your engine:
 // - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
-static void ImGui_ImplGlfw_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
+void ImGui_ImplGlfw_RenderDrawLists(ImDrawData* draw_data)
 {
-    if (cmd_lists_count == 0)
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    ImGuiIO& io = ImGui::GetIO();
+    int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
+    int fb_height = (int)(io.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!
-    // A probable faster way to render would be to collate all vertices from all cmd_lists into a single vertex buffer.
     // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers.
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
     glPushAttrib(GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_TRANSFORM_BIT);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@@ -43,42 +54,41 @@ static void ImGui_ImplGlfw_RenderDrawLists(ImDrawList** const cmd_lists, int cmd
     glEnable(GL_TEXTURE_2D);
     //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context
 
-    // Setup orthographic projection matrix
-    const float width = ImGui::GetIO().DisplaySize.x;
-    const float height = ImGui::GetIO().DisplaySize.y;
+    // Setup viewport, orthographic projection matrix
+    glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
     glMatrixMode(GL_PROJECTION);
     glPushMatrix();
     glLoadIdentity();
-    glOrtho(0.0f, width, height, 0.0f, -1.0f, +1.0f);
+    glOrtho(0.0f, io.DisplaySize.x, io.DisplaySize.y, 0.0f, -1.0f, +1.0f);
     glMatrixMode(GL_MODELVIEW);
     glPushMatrix();
     glLoadIdentity();
 
     // Render command lists
     #define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
-    for (int n = 0; n < cmd_lists_count; n++)
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
     {
-        const ImDrawList* cmd_list = cmd_lists[n];
-        const unsigned char* vtx_buffer = (const unsigned char*)&cmd_list->vtx_buffer.front();
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const unsigned char* vtx_buffer = (const unsigned char*)&cmd_list->VtxBuffer.front();
+        const ImDrawIdx* idx_buffer = &cmd_list->IdxBuffer.front();
         glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, pos)));
         glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, uv)));
         glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, col)));
 
-        int vtx_offset = 0;
-        for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
+        for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.size(); cmd_i++)
         {
-            const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
-            if (pcmd->user_callback)
+            const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
             {
-                pcmd->user_callback(cmd_list, pcmd);
+                pcmd->UserCallback(cmd_list, pcmd);
             }
             else
             {
-                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->texture_id);
-                glScissor((int)pcmd->clip_rect.x, (int)(height - pcmd->clip_rect.w), (int)(pcmd->clip_rect.z - pcmd->clip_rect.x), (int)(pcmd->clip_rect.w - pcmd->clip_rect.y));
-                glDrawArrays(GL_TRIANGLES, vtx_offset, pcmd->vtx_count);
+                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+                glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
+                glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer);
             }
-            vtx_offset += pcmd->vtx_count;
+            idx_buffer += pcmd->ElemCount;
         }
     }
     #undef OFFSETOF
@@ -87,12 +97,13 @@ static void ImGui_ImplGlfw_RenderDrawLists(ImDrawList** const cmd_lists, int cmd
     glDisableClientState(GL_COLOR_ARRAY);
     glDisableClientState(GL_TEXTURE_COORD_ARRAY);
     glDisableClientState(GL_VERTEX_ARRAY);
-    glBindTexture(GL_TEXTURE_2D, 0);
+    glBindTexture(GL_TEXTURE_2D, last_texture);
     glMatrixMode(GL_MODELVIEW);
     glPopMatrix();
     glMatrixMode(GL_PROJECTION);
     glPopMatrix();
     glPopAttrib();
+    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
 }
 
 static const char* ImGui_ImplGlfw_GetClipboardText()
@@ -128,6 +139,7 @@ void ImGui_ImplGlFw_KeyCallback(GLFWwindow*, int key, int, int action, int mods)
     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)
@@ -139,14 +151,15 @@ void ImGui_ImplGlfw_CharCallback(GLFWwindow*, unsigned int c)
 
 bool ImGui_ImplGlfw_CreateDeviceObjects()
 {
+    // Build texture atlas
     ImGuiIO& io = ImGui::GetIO();
-
-    // Build texture
     unsigned char* pixels;
     int width, height;
     io.Fonts->GetTexDataAsAlpha8(&pixels, &width, &height);
 
-    // Create texture
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
     glGenTextures(1, &g_FontTexture);
     glBindTexture(GL_TEXTURE_2D, g_FontTexture);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
@@ -156,9 +169,8 @@ bool ImGui_ImplGlfw_CreateDeviceObjects()
     // Store our identifier
     io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
 
-    // Cleanup (don't clear the input data if you want to append new fonts later)
-    io.Fonts->ClearInputData();
-    io.Fonts->ClearTexData();
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
 
     return true;
 }
@@ -183,6 +195,8 @@ bool    ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks)
     io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
     io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
     io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
     io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
     io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
     io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
@@ -196,10 +210,10 @@ bool    ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks)
     io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
     io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
 
-    io.RenderDrawListsFn = ImGui_ImplGlfw_RenderDrawLists;
+    io.RenderDrawListsFn = ImGui_ImplGlfw_RenderDrawLists;      // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
     io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText;
     io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText;
-#ifdef _MSC_VER
+#ifdef _WIN32
     io.ImeWindowHandle = glfwGetWin32Window(g_Window);
 #endif
 
@@ -232,7 +246,8 @@ void ImGui_ImplGlfw_NewFrame()
     int display_w, display_h;
     glfwGetWindowSize(g_Window, &w, &h);
     glfwGetFramebufferSize(g_Window, &display_w, &display_h);
-    io.DisplaySize = ImVec2((float)display_w, (float)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);
 
     // Setup time step
     double current_time =  glfwGetTime();
@@ -245,9 +260,7 @@ void ImGui_ImplGlfw_NewFrame()
     {
         double mouse_x, mouse_y;
         glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
-    	mouse_x *= (float)display_w / w;                        // Convert mouse coordinates to pixels
-    	mouse_y *= (float)display_h / h;
-    	io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);   // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
+        io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);   // Mouse position in screen coordinates (set to -1,-1 if no mouse / on another screen, etc.)
     }
     else
     {

examples/opengl_example/imgui_impl_glfw.h

@@ -1,20 +1,25 @@
 // ImGui GLFW binding with OpenGL
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
 // https://github.com/ocornut/imgui
 
 struct GLFWwindow;
 
-bool        ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks);
-void        ImGui_ImplGlfw_Shutdown();
-void        ImGui_ImplGlfw_NewFrame();
+IMGUI_API bool        ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks);
+IMGUI_API void        ImGui_ImplGlfw_Shutdown();
+IMGUI_API void        ImGui_ImplGlfw_NewFrame();
 
 // Use if you want to reset your rendering device without losing ImGui state.
-void        ImGui_ImplGlfw_InvalidateDeviceObjects();
-bool        ImGui_ImplGlfw_CreateDeviceObjects();
+IMGUI_API void        ImGui_ImplGlfw_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplGlfw_CreateDeviceObjects();
 
 // 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.
-void        ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
-void        ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
-void        ImGui_ImplGlFw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
-void        ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);
+IMGUI_API void        ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+IMGUI_API void        ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
+IMGUI_API void        ImGui_ImplGlFw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+IMGUI_API void        ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c);

examples/opengl_example/main.cpp

@@ -1,4 +1,5 @@
 // ImGui - standalone example application for Glfw + OpenGL 2, using fixed 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"
@@ -15,19 +16,22 @@ int main(int, char**)
     // Setup window
     glfwSetErrorCallback(error_callback);
     if (!glfwInit())
-        exit(1);
+        return 1;
     GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui OpenGL2 example", NULL, NULL);
     glfwMakeContextCurrent(window);
 
     // Setup ImGui binding
     ImGui_ImplGlfw_Init(window, true);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
     //ImGuiIO& io = ImGui::GetIO();
-    //ImFont* my_font0 = io.Fonts->AddFontDefault();
-    //ImFont* my_font1 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
-    //ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/Karla-Regular.ttf", 16.0f);
-    //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
-    //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
-    //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
 
     bool show_test_window = true;
     bool show_another_window = false;
@@ -68,7 +72,9 @@ int main(int, char**)
         }
 
         // Rendering
-        glViewport(0, 0, (int)ImGui::GetIO().DisplaySize.x, (int)ImGui::GetIO().DisplaySize.y);
+        int display_w, display_h;
+        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::Render();

examples/opengl_example/opengl_example.vcxproj

@@ -149,14 +149,20 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="..\..\imgui.cpp" />
+    <ClCompile Include="..\..\imgui_demo.cpp" />
+    <ClCompile Include="..\..\imgui_draw.cpp" />
     <ClCompile Include="imgui_impl_glfw.cpp" />
     <ClCompile Include="main.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h" />
     <ClInclude Include="..\..\imgui.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
     <ClInclude Include="imgui_impl_glfw.h" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

examples/opengl_example/opengl_example.vcxproj.filters

@@ -19,6 +19,12 @@
     <ClCompile Include="imgui_impl_glfw.cpp">
       <Filter>sources</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\imgui_demo.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\imgui_draw.cpp">
+      <Filter>imgui</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\imconfig.h">
@@ -30,5 +36,11 @@
     <ClInclude Include="imgui_impl_glfw.h">
       <Filter>sources</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\imgui_internal.h">
+      <Filter>imgui</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="..\README.txt" />
   </ItemGroup>
 </Project>

examples/sdl_opengl3_example/README.md

@@ -0,0 +1,22 @@
+
+# How to Build
+
+- On Windows with Visual Studio's CLI
+
+```
+set SDL2DIR=path_to_your_sdl2_folder
+cl /Zi /MD /I ..\.. /I ..\libs\gl3w /I %SDL2DIR%\include main.cpp imgui_impl_sdl_gl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /link /libpath:%SDL2DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
+```
+
+- On Linux and similar Unixes
+
+```
+c++ `sdl2-config --cflags` -I ../.. -I ../libs/gl3w main.cpp imgui_impl_sdl_gl3.cpp ../../imgui*.cpp ../libs/gl3w/GL/gl3w.c `sdl2-config --libs` -lGL -ldl -o sdl2example
+```
+
+- On Mac OS X
+
+```
+brew install sdl2
+c++ `sdl2-config --cflags` -I ../.. -I ../libs/gl3w main.cpp imgui_impl_sdl_gl3.cpp ../../imgui*.cpp ../libs/gl3w/GL/gl3w.c `sdl2-config --libs` -framework OpenGl -framework CoreFoundation -o sdl2example
+```

examples/sdl_opengl3_example/imgui_impl_sdl_gl3.cpp

@@ -0,0 +1,385 @@
+// ImGui SDL2 binding with OpenGL3
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#include "imgui.h"
+#include "imgui_impl_sdl_gl3.h"
+
+// SDL,GL3W
+#include <SDL.h>
+#include <SDL_syswm.h>
+#include <GL/gl3w.h>
+
+// Data
+static double       g_Time = 0.0f;
+static bool         g_MousePressed[3] = { false, false, false };
+static float        g_MouseWheel = 0.0f;
+static GLuint       g_FontTexture = 0;
+static int          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 unsigned int g_VboHandle = 0, g_VaoHandle = 0, g_ElementsHandle = 0;
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+// If text or lines are blurry when integrating ImGui in your engine:
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+void ImGui_ImplSdlGL3_RenderDrawLists(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    ImGuiIO& io = ImGui::GetIO();
+    int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
+    int fb_height = (int)(io.DisplaySize.y * io.DisplayFramebufferScale.y);
+    if (fb_width == 0 || fb_height == 0)
+        return;
+    draw_data->ScaleClipRects(io.DisplayFramebufferScale);
+
+    // Backup GL state
+    GLint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    GLint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+    GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer);
+    GLint last_vertex_array; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+    GLint last_blend_src; glGetIntegerv(GL_BLEND_SRC, &last_blend_src);
+    GLint last_blend_dst; glGetIntegerv(GL_BLEND_DST, &last_blend_dst);
+    GLint last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, &last_blend_equation_rgb);
+    GLint last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &last_blend_equation_alpha);
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    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
+    glEnable(GL_BLEND);
+    glBlendEquation(GL_FUNC_ADD);
+    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+    glDisable(GL_CULL_FACE);
+    glDisable(GL_DEPTH_TEST);
+    glEnable(GL_SCISSOR_TEST);
+    glActiveTexture(GL_TEXTURE0);
+
+    // Setup orthographic projection matrix
+    glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
+    const float ortho_projection[4][4] =
+    {
+        { 2.0f/io.DisplaySize.x, 0.0f,                   0.0f, 0.0f },
+        { 0.0f,                  2.0f/-io.DisplaySize.y, 0.0f, 0.0f },
+        { 0.0f,                  0.0f,                  -1.0f, 0.0f },
+        {-1.0f,                  1.0f,                   0.0f, 1.0f },
+    };
+    glUseProgram(g_ShaderHandle);
+    glUniform1i(g_AttribLocationTex, 0);
+    glUniformMatrix4fv(g_AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
+    glBindVertexArray(g_VaoHandle);
+
+    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);
+        glBufferData(GL_ARRAY_BUFFER, (GLsizeiptr)cmd_list->VtxBuffer.size() * sizeof(ImDrawVert), (GLvoid*)&cmd_list->VtxBuffer.front(), GL_STREAM_DRAW);
+
+        glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_ElementsHandle);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER, (GLsizeiptr)cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx), (GLvoid*)&cmd_list->IdxBuffer.front(), GL_STREAM_DRAW);
+
+        for (const ImDrawCmd* pcmd = cmd_list->CmdBuffer.begin(); pcmd != cmd_list->CmdBuffer.end(); pcmd++)
+        {
+            if (pcmd->UserCallback)
+            {
+                pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+                glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
+                glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer_offset);
+            }
+            idx_buffer_offset += pcmd->ElemCount;
+        }
+    }
+
+    // Restore modified GL state
+    glUseProgram(last_program);
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindVertexArray(last_vertex_array);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer);
+    glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha);
+    glBlendFunc(last_blend_src, last_blend_dst);
+    if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND);
+    if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE);
+    if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
+    if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST);
+    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
+}
+
+static const char* ImGui_ImplSdlGL3_GetClipboardText()
+{
+    return SDL_GetClipboardText();
+}
+
+static void ImGui_ImplSdlGL3_SetClipboardText(const char* text)
+{
+    SDL_SetClipboardText(text);
+}
+
+bool ImGui_ImplSdlGL3_ProcessEvent(SDL_Event* event)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    switch (event->type)
+    {
+    case SDL_MOUSEWHEEL:
+        {
+            if (event->wheel.y > 0)
+                g_MouseWheel = 1;
+            if (event->wheel.y < 0)
+                g_MouseWheel = -1;
+            return true;
+        }
+    case SDL_MOUSEBUTTONDOWN:
+        {
+            if (event->button.button == SDL_BUTTON_LEFT) g_MousePressed[0] = true;
+            if (event->button.button == SDL_BUTTON_RIGHT) g_MousePressed[1] = true;
+            if (event->button.button == SDL_BUTTON_MIDDLE) g_MousePressed[2] = true;
+            return true;
+        }
+    case SDL_TEXTINPUT:
+        {
+            ImGuiIO& io = ImGui::GetIO();
+            io.AddInputCharactersUTF8(event->text.text);
+            return true;
+        }
+    case SDL_KEYDOWN:
+    case SDL_KEYUP:
+        {
+            int key = event->key.keysym.sym & ~SDLK_SCANCODE_MASK;
+            io.KeysDown[key] = (event->type == SDL_KEYDOWN);
+            io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
+            io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
+            io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
+            io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
+            return true;
+        }
+    }
+    return false;
+}
+
+void ImGui_ImplSdlGL3_CreateFontsTexture()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);   // Load as RGBA 32-bits for OpenGL3 demo because it is more likely to be compatible with user's existing shader.
+
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGenTextures(1, &g_FontTexture);
+    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);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
+
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+}
+
+bool ImGui_ImplSdlGL3_CreateDeviceObjects()
+{
+    // Backup GL state
+    GLint last_texture, last_array_buffer, last_vertex_array;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer);
+    glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array);
+
+    const GLchar *vertex_shader =
+        "#version 330\n"
+        "uniform mat4 ProjMtx;\n"
+        "in vec2 Position;\n"
+        "in vec2 UV;\n"
+        "in vec4 Color;\n"
+        "out vec2 Frag_UV;\n"
+        "out vec4 Frag_Color;\n"
+        "void main()\n"
+        "{\n"
+        "	Frag_UV = UV;\n"
+        "	Frag_Color = Color;\n"
+        "	gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
+        "}\n";
+
+    const GLchar* fragment_shader =
+        "#version 330\n"
+        "uniform sampler2D Texture;\n"
+        "in vec2 Frag_UV;\n"
+        "in vec4 Frag_Color;\n"
+        "out vec4 Out_Color;\n"
+        "void main()\n"
+        "{\n"
+        "	Out_Color = Frag_Color * texture( Texture, Frag_UV.st);\n"
+        "}\n";
+
+    g_ShaderHandle = glCreateProgram();
+    g_VertHandle = glCreateShader(GL_VERTEX_SHADER);
+    g_FragHandle = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(g_VertHandle, 1, &vertex_shader, 0);
+    glShaderSource(g_FragHandle, 1, &fragment_shader, 0);
+    glCompileShader(g_VertHandle);
+    glCompileShader(g_FragHandle);
+    glAttachShader(g_ShaderHandle, g_VertHandle);
+    glAttachShader(g_ShaderHandle, g_FragHandle);
+    glLinkProgram(g_ShaderHandle);
+
+    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");
+
+    glGenBuffers(1, &g_VboHandle);
+    glGenBuffers(1, &g_ElementsHandle);
+
+    glGenVertexArrays(1, &g_VaoHandle);
+    glBindVertexArray(g_VaoHandle);
+    glBindBuffer(GL_ARRAY_BUFFER, g_VboHandle);
+    glEnableVertexAttribArray(g_AttribLocationPosition);
+    glEnableVertexAttribArray(g_AttribLocationUV);
+    glEnableVertexAttribArray(g_AttribLocationColor);
+
+#define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
+    glVertexAttribPointer(g_AttribLocationPosition, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, pos));
+    glVertexAttribPointer(g_AttribLocationUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, uv));
+    glVertexAttribPointer(g_AttribLocationColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)OFFSETOF(ImDrawVert, col));
+#undef OFFSETOF
+
+    ImGui_ImplSdlGL3_CreateFontsTexture();
+
+    // Restore modified GL state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
+    glBindVertexArray(last_vertex_array);
+
+    return true;
+}
+
+void    ImGui_ImplSdlGL3_InvalidateDeviceObjects()
+{
+    if (g_VaoHandle) glDeleteVertexArrays(1, &g_VaoHandle);
+    if (g_VboHandle) glDeleteBuffers(1, &g_VboHandle);
+    if (g_ElementsHandle) glDeleteBuffers(1, &g_ElementsHandle);
+    g_VaoHandle = g_VboHandle = g_ElementsHandle = 0;
+
+    glDetachShader(g_ShaderHandle, g_VertHandle);
+    glDeleteShader(g_VertHandle);
+    g_VertHandle = 0;
+
+    glDetachShader(g_ShaderHandle, g_FragHandle);
+    glDeleteShader(g_FragHandle);
+    g_FragHandle = 0;
+
+    glDeleteProgram(g_ShaderHandle);
+    g_ShaderHandle = 0;
+
+    if (g_FontTexture)
+    {
+        glDeleteTextures(1, &g_FontTexture);
+        ImGui::GetIO().Fonts->TexID = 0;
+        g_FontTexture = 0;
+    }
+}
+
+bool    ImGui_ImplSdlGL3_Init(SDL_Window* window)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = SDLK_TAB;                     // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = SDL_SCANCODE_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = SDL_SCANCODE_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = SDL_SCANCODE_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = SDL_SCANCODE_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = SDL_SCANCODE_PAGEUP;
+    io.KeyMap[ImGuiKey_PageDown] = SDL_SCANCODE_PAGEDOWN;
+    io.KeyMap[ImGuiKey_Home] = SDL_SCANCODE_HOME;
+    io.KeyMap[ImGuiKey_End] = SDL_SCANCODE_END;
+    io.KeyMap[ImGuiKey_Delete] = SDLK_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = SDLK_BACKSPACE;
+    io.KeyMap[ImGuiKey_Enter] = SDLK_RETURN;
+    io.KeyMap[ImGuiKey_Escape] = SDLK_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = SDLK_a;
+    io.KeyMap[ImGuiKey_C] = SDLK_c;
+    io.KeyMap[ImGuiKey_V] = SDLK_v;
+    io.KeyMap[ImGuiKey_X] = SDLK_x;
+    io.KeyMap[ImGuiKey_Y] = SDLK_y;
+    io.KeyMap[ImGuiKey_Z] = SDLK_z;
+
+    io.RenderDrawListsFn = ImGui_ImplSdlGL3_RenderDrawLists;   // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+    io.SetClipboardTextFn = ImGui_ImplSdlGL3_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplSdlGL3_GetClipboardText;
+
+#ifdef _WIN32
+    SDL_SysWMinfo wmInfo;
+    SDL_VERSION(&wmInfo.version);
+    SDL_GetWindowWMInfo(window, &wmInfo);
+    io.ImeWindowHandle = wmInfo.info.win.window;
+#endif
+
+    return true;
+}
+
+void ImGui_ImplSdlGL3_Shutdown()
+{
+    ImGui_ImplSdlGL3_InvalidateDeviceObjects();
+    ImGui::Shutdown();
+}
+
+void ImGui_ImplSdlGL3_NewFrame(SDL_Window* window)
+{
+    if (!g_FontTexture)
+        ImGui_ImplSdlGL3_CreateDeviceObjects();
+
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    int display_w, display_h;
+    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);
+
+    // Setup time step
+    Uint32	time = SDL_GetTicks();
+    double current_time = time / 1000.0;
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f / 60.0f);
+    g_Time = current_time;
+
+    // Setup inputs
+    // (we already got mouse wheel, keyboard keys & characters from SDL_PollEvent())
+    int mx, my;
+    Uint32 mouseMask = SDL_GetMouseState(&mx, &my);
+    if (SDL_GetWindowFlags(window) & SDL_WINDOW_MOUSE_FOCUS)
+        io.MousePos = ImVec2((float)mx, (float)my);   // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
+    else
+        io.MousePos = ImVec2(-1, -1);
+
+    io.MouseDown[0] = g_MousePressed[0] || (mouseMask & SDL_BUTTON(SDL_BUTTON_LEFT)) != 0;		// If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+    io.MouseDown[1] = g_MousePressed[1] || (mouseMask & SDL_BUTTON(SDL_BUTTON_RIGHT)) != 0;
+    io.MouseDown[2] = g_MousePressed[2] || (mouseMask & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0;
+    g_MousePressed[0] = g_MousePressed[1] = g_MousePressed[2] = false;
+
+    io.MouseWheel = g_MouseWheel;
+    g_MouseWheel = 0.0f;
+
+    // Hide OS mouse cursor if ImGui is drawing it
+    SDL_ShowCursor(io.MouseDrawCursor ? 0 : 1);
+
+    // Start the frame
+    ImGui::NewFrame();
+}

examples/sdl_opengl3_example/imgui_impl_sdl_gl3.h

@@ -0,0 +1,19 @@
+// ImGui SDL2 binding with OpenGL3
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+struct SDL_Window;
+typedef union SDL_Event SDL_Event;
+
+IMGUI_API bool        ImGui_ImplSdlGL3_Init(SDL_Window* window);
+IMGUI_API void        ImGui_ImplSdlGL3_Shutdown();
+IMGUI_API void        ImGui_ImplSdlGL3_NewFrame(SDL_Window* window);
+IMGUI_API bool        ImGui_ImplSdlGL3_ProcessEvent(SDL_Event* event);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_API void        ImGui_ImplSdlGL3_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplSdlGL3_CreateDeviceObjects();

examples/sdl_opengl3_example/main.cpp

@@ -0,0 +1,106 @@
+// 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.
+
+#include <imgui.h>
+#include "imgui_impl_sdl_gl3.h"
+#include <stdio.h>
+#include <GL/gl3w.h>
+#include <SDL.h>
+
+int main(int, char**)
+{
+    // Setup SDL
+    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Setup window
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
+    SDL_DisplayMode current;
+    SDL_GetCurrentDisplayMode(0, &current);
+    SDL_Window *window = SDL_CreateWindow("ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
+    SDL_GLContext glcontext = SDL_GL_CreateContext(window);
+    gl3wInit();
+
+    // Setup ImGui binding
+    ImGui_ImplSdlGL3_Init(window);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+    bool show_test_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImColor(114, 144, 154);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        SDL_Event event;
+        while (SDL_PollEvent(&event))
+        {
+            ImGui_ImplSdlGL3_ProcessEvent(&event);
+            if (event.type == SDL_QUIT)
+                done = true;
+        }
+        ImGui_ImplSdlGL3_NewFrame(window);
+
+        // 1. Show a simple window
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        {
+            static float f = 0.0f;
+            ImGui::Text("Hello, world!");
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+            ImGui::ColorEdit3("clear color", (float*)&clear_color);
+            if (ImGui::Button("Test Window")) show_test_window ^= 1;
+            if (ImGui::Button("Another Window")) show_another_window ^= 1;
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        }
+
+        // 2. Show another simple window, this time using an explicit Begin/End pair
+        if (show_another_window)
+        {
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Text("Hello");
+            ImGui::End();
+        }
+
+        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
+        if (show_test_window)
+        {
+            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
+            ImGui::ShowTestWindow(&show_test_window);
+        }
+
+        // Rendering
+        glViewport(0, 0, (int)ImGui::GetIO().DisplaySize.x, (int)ImGui::GetIO().DisplaySize.y);
+        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui::Render();
+        SDL_GL_SwapWindow(window);
+    }
+
+    // Cleanup
+    ImGui_ImplSdlGL3_Shutdown();
+    SDL_GL_DeleteContext(glcontext);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

examples/sdl_opengl_example/README.md

@@ -0,0 +1,22 @@
+
+# How to Build
+
+- On Windows with Visual Studio's CLI
+
+```
+set SDL2DIR=path_to_your_sdl2_folder
+cl /Zi /MD /I %SDL2DIR%\include> /I ..\.. main.cpp imgui_impl_sdl.cpp ..\..\imgui*.cpp /link /LIBPATH:%SDL2DIR%\lib SDL2.lib SDL2main.lib
+```
+
+- On Linux and similar Unixes
+
+```
+c++ `sdl2-config --cflags` -I ../.. main.cpp imgui_impl_sdl.cpp ../../imgui*.cpp `sdl2-config --libs` -lGL -o sdl2example
+```
+
+- On Mac OS X
+
+```
+brew install sdl2
+c++ `sdl2-config --cflags` -I ../.. main.cpp imgui_impl_sdl.cpp ../../imgui*.cpp `sdl2-config --libs` -framework OpenGl -o sdl2example
+```

examples/sdl_opengl_example/imgui_impl_sdl.cpp

@@ -0,0 +1,275 @@
+// ImGui SDL2 binding with OpenGL
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#include <SDL.h>
+#include <SDL_syswm.h>
+#include <SDL_opengl.h>
+#include <imgui.h>
+#include "imgui_impl_sdl.h"
+
+// Data
+static double       g_Time = 0.0f;
+static bool         g_MousePressed[3] = { false, false, false };
+static float        g_MouseWheel = 0.0f;
+static GLuint       g_FontTexture = 0;
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+// If text or lines are blurry when integrating ImGui in your engine:
+// - in your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f)
+void ImGui_ImplSdl_RenderDrawLists(ImDrawData* draw_data)
+{
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    ImGuiIO& io = ImGui::GetIO();
+    int fb_width = (int)(io.DisplaySize.x * io.DisplayFramebufferScale.x);
+    int fb_height = (int)(io.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.
+    GLint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport);
+    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);
+    glDisable(GL_DEPTH_TEST);
+    glEnable(GL_SCISSOR_TEST);
+    glEnableClientState(GL_VERTEX_ARRAY);
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glEnableClientState(GL_COLOR_ARRAY);
+    glEnable(GL_TEXTURE_2D);
+    //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context
+
+    // Setup viewport, orthographic projection matrix
+    glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height);
+    glMatrixMode(GL_PROJECTION);
+    glPushMatrix();
+    glLoadIdentity();
+    glOrtho(0.0f, io.DisplaySize.x, io.DisplaySize.y, 0.0f, -1.0f, +1.0f);
+    glMatrixMode(GL_MODELVIEW);
+    glPushMatrix();
+    glLoadIdentity();
+
+    // Render command lists
+    #define OFFSETOF(TYPE, ELEMENT) ((size_t)&(((TYPE *)0)->ELEMENT))
+    for (int n = 0; n < draw_data->CmdListsCount; n++)
+    {
+        const ImDrawList* cmd_list = draw_data->CmdLists[n];
+        const unsigned char* vtx_buffer = (const unsigned char*)&cmd_list->VtxBuffer.front();
+        const ImDrawIdx* idx_buffer = &cmd_list->IdxBuffer.front();
+        glVertexPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, pos)));
+        glTexCoordPointer(2, GL_FLOAT, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, uv)));
+        glColorPointer(4, GL_UNSIGNED_BYTE, sizeof(ImDrawVert), (void*)(vtx_buffer + OFFSETOF(ImDrawVert, col)));
+
+        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);
+            }
+            else
+            {
+                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->TextureId);
+                glScissor((int)pcmd->ClipRect.x, (int)(fb_height - pcmd->ClipRect.w), (int)(pcmd->ClipRect.z - pcmd->ClipRect.x), (int)(pcmd->ClipRect.w - pcmd->ClipRect.y));
+                glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer);
+            }
+            idx_buffer += pcmd->ElemCount;
+        }
+    }
+    #undef OFFSETOF
+
+    // Restore modified state
+    glDisableClientState(GL_COLOR_ARRAY);
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+    glDisableClientState(GL_VERTEX_ARRAY);
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+    glMatrixMode(GL_MODELVIEW);
+    glPopMatrix();
+    glMatrixMode(GL_PROJECTION);
+    glPopMatrix();
+    glPopAttrib();
+    glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]);
+}
+
+static const char* ImGui_ImplSdl_GetClipboardText()
+{
+    return SDL_GetClipboardText();
+}
+
+static void ImGui_ImplSdl_SetClipboardText(const char* text)
+{
+    SDL_SetClipboardText(text);
+}
+
+bool ImGui_ImplSdl_ProcessEvent(SDL_Event* event)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    switch (event->type)
+    {
+    case SDL_MOUSEWHEEL:
+        {
+            if (event->wheel.y > 0)
+                g_MouseWheel = 1;
+            if (event->wheel.y < 0)
+                g_MouseWheel = -1;
+            return true;
+        }
+    case SDL_MOUSEBUTTONDOWN:
+        {
+            if (event->button.button == SDL_BUTTON_LEFT) g_MousePressed[0] = true;
+            if (event->button.button == SDL_BUTTON_RIGHT) g_MousePressed[1] = true;
+            if (event->button.button == SDL_BUTTON_MIDDLE) g_MousePressed[2] = true;
+            return true;
+        }
+    case SDL_TEXTINPUT:
+        {
+            ImGuiIO& io = ImGui::GetIO();
+            io.AddInputCharactersUTF8(event->text.text);
+            return true;
+        }
+    case SDL_KEYDOWN:
+    case SDL_KEYUP:
+        {
+            int key = event->key.keysym.sym & ~SDLK_SCANCODE_MASK;
+            io.KeysDown[key] = (event->type == SDL_KEYDOWN);
+            io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
+            io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
+            io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
+            io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
+            return true;
+        }
+    }
+    return false;
+}
+
+bool ImGui_ImplSdl_CreateDeviceObjects()
+{
+    // Build texture atlas
+    ImGuiIO& io = ImGui::GetIO();
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsAlpha8(&pixels, &width, &height);
+
+    // Upload texture to graphics system
+    GLint last_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture);
+    glGenTextures(1, &g_FontTexture);
+    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);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, pixels);
+
+    // Store our identifier
+    io.Fonts->TexID = (void *)(intptr_t)g_FontTexture;
+
+    // Restore state
+    glBindTexture(GL_TEXTURE_2D, last_texture);
+
+    return true;
+}
+
+void    ImGui_ImplSdl_InvalidateDeviceObjects()
+{
+    if (g_FontTexture)
+    {
+        glDeleteTextures(1, &g_FontTexture);
+        ImGui::GetIO().Fonts->TexID = 0;
+        g_FontTexture = 0;
+    }
+}
+
+bool    ImGui_ImplSdl_Init(SDL_Window* window)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = SDLK_TAB;                     // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = SDL_SCANCODE_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = SDL_SCANCODE_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = SDL_SCANCODE_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = SDL_SCANCODE_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = SDL_SCANCODE_PAGEUP;
+    io.KeyMap[ImGuiKey_PageDown] = SDL_SCANCODE_PAGEDOWN;
+    io.KeyMap[ImGuiKey_Home] = SDL_SCANCODE_HOME;
+    io.KeyMap[ImGuiKey_End] = SDL_SCANCODE_END;
+    io.KeyMap[ImGuiKey_Delete] = SDLK_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = SDLK_BACKSPACE;
+    io.KeyMap[ImGuiKey_Enter] = SDLK_RETURN;
+    io.KeyMap[ImGuiKey_Escape] = SDLK_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = SDLK_a;
+    io.KeyMap[ImGuiKey_C] = SDLK_c;
+    io.KeyMap[ImGuiKey_V] = SDLK_v;
+    io.KeyMap[ImGuiKey_X] = SDLK_x;
+    io.KeyMap[ImGuiKey_Y] = SDLK_y;
+    io.KeyMap[ImGuiKey_Z] = SDLK_z;
+
+    io.RenderDrawListsFn = ImGui_ImplSdl_RenderDrawLists;   // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+    io.SetClipboardTextFn = ImGui_ImplSdl_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplSdl_GetClipboardText;
+
+#ifdef _WIN32
+    SDL_SysWMinfo wmInfo;
+    SDL_VERSION(&wmInfo.version);
+    SDL_GetWindowWMInfo(window, &wmInfo);
+    io.ImeWindowHandle = wmInfo.info.win.window;
+#endif
+
+    return true;
+}
+
+void ImGui_ImplSdl_Shutdown()
+{
+    ImGui_ImplSdl_InvalidateDeviceObjects();
+    ImGui::Shutdown();
+}
+
+void ImGui_ImplSdl_NewFrame(SDL_Window *window)
+{
+    if (!g_FontTexture)
+        ImGui_ImplSdl_CreateDeviceObjects();
+
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size (every frame to accommodate for window resizing)
+    int w, h;
+    int display_w, display_h;
+    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);
+
+    // Setup time step
+    Uint32	time = SDL_GetTicks();
+    double current_time = time / 1000.0;
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    // Setup inputs
+    // (we already got mouse wheel, keyboard keys & characters from SDL_PollEvent())
+    int mx, my;
+    Uint32 mouseMask = SDL_GetMouseState(&mx, &my);
+    if (SDL_GetWindowFlags(window) & SDL_WINDOW_MOUSE_FOCUS)
+        io.MousePos = ImVec2((float)mx, (float)my);   // Mouse position, in pixels (set to -1,-1 if no mouse / on another screen, etc.)
+    else
+        io.MousePos = ImVec2(-1,-1);
+
+    io.MouseDown[0] = g_MousePressed[0] || (mouseMask & SDL_BUTTON(SDL_BUTTON_LEFT)) != 0;		// If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+    io.MouseDown[1] = g_MousePressed[1] || (mouseMask & SDL_BUTTON(SDL_BUTTON_RIGHT)) != 0;
+    io.MouseDown[2] = g_MousePressed[2] || (mouseMask & SDL_BUTTON(SDL_BUTTON_MIDDLE)) != 0;
+    g_MousePressed[0] = g_MousePressed[1] = g_MousePressed[2] = false;
+
+    io.MouseWheel = g_MouseWheel;
+    g_MouseWheel = 0.0f;
+
+    // Hide OS mouse cursor if ImGui is drawing it
+    SDL_ShowCursor(io.MouseDrawCursor ? 0 : 1);
+
+    // Start the frame
+    ImGui::NewFrame();
+}

examples/sdl_opengl_example/imgui_impl_sdl.h

@@ -0,0 +1,19 @@
+// ImGui SDL2 binding with OpenGL
+// In this binding, ImTextureID is used to store an OpenGL 'GLuint' texture identifier. Read the FAQ about ImTextureID in imgui.cpp.
+
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 4 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXXX_NewFrame(), ImGui::Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+struct SDL_Window;
+typedef union SDL_Event SDL_Event;
+
+IMGUI_API bool        ImGui_ImplSdl_Init(SDL_Window* window);
+IMGUI_API void        ImGui_ImplSdl_Shutdown();
+IMGUI_API void        ImGui_ImplSdl_NewFrame(SDL_Window* window);
+IMGUI_API bool        ImGui_ImplSdl_ProcessEvent(SDL_Event* event);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_API void        ImGui_ImplSdl_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplSdl_CreateDeviceObjects();

examples/sdl_opengl_example/main.cpp

@@ -0,0 +1,103 @@
+// 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.
+
+#include <imgui.h>
+#include "imgui_impl_sdl.h"
+#include <stdio.h>
+#include <SDL.h>
+#include <SDL_opengl.h>
+
+int main(int, char**)
+{
+    // Setup SDL
+    if (SDL_Init(SDL_INIT_EVERYTHING) != 0)
+    {
+        printf("Error: %s\n", SDL_GetError());
+        return -1;
+    }
+
+    // Setup window
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
+    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("ImGui SDL2+OpenGL example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
+    SDL_GLContext glcontext = SDL_GL_CreateContext(window);
+
+    // Setup ImGui binding
+    ImGui_ImplSdl_Init(window);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+    bool show_test_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImColor(114, 144, 154);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        SDL_Event event;
+        while (SDL_PollEvent(&event))
+        {
+            ImGui_ImplSdl_ProcessEvent(&event);
+            if (event.type == SDL_QUIT)
+                done = true;
+        }
+        ImGui_ImplSdl_NewFrame(window);
+
+        // 1. Show a simple window
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        {
+            static float f = 0.0f;
+            ImGui::Text("Hello, world!");
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+            ImGui::ColorEdit3("clear color", (float*)&clear_color);
+            if (ImGui::Button("Test Window")) show_test_window ^= 1;
+            if (ImGui::Button("Another Window")) show_another_window ^= 1;
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        }
+
+        // 2. Show another simple window, this time using an explicit Begin/End pair
+        if (show_another_window)
+        {
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Text("Hello");
+            ImGui::End();
+        }
+
+        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
+        if (show_test_window)
+        {
+            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
+            ImGui::ShowTestWindow(&show_test_window);
+        }
+
+        // Rendering
+        glViewport(0, 0, (int)ImGui::GetIO().DisplaySize.x, (int)ImGui::GetIO().DisplaySize.y);
+        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui::Render();
+        SDL_GL_SwapWindow(window);
+    }
+
+    // Cleanup
+    ImGui_ImplSdl_Shutdown();
+    SDL_GL_DeleteContext(glcontext);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}

examples/vulkan_example/CMakeLists.txt

@@ -0,0 +1,36 @@
+cmake_minimum_required(VERSION 2.8)
+project(ImGuiGLFWVulkanExample C CXX)
+
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
+endif()
+
+set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DVK_PROTOTYPES")
+set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVK_PROTOTYPES")
+
+# GLFW
+set(GLFW_DIR ../../../glfw) # Set this to point to a up-to-date GLFW repo
+option(GLFW_BUILD_EXAMPLES "Build the GLFW example programs" OFF)
+option(GLFW_BUILD_TESTS "Build the GLFW test programs" OFF)
+option(GLFW_BUILD_DOCS "Build the GLFW documentation" OFF)
+option(GLFW_INSTALL "Generate installation target" OFF)
+option(GLFW_DOCUMENT_INTERNALS "Include internals in documentation" OFF)
+add_subdirectory(${GLFW_DIR} binary_dir EXCLUDE_FROM_ALL)
+include_directories(${GLFW_DIR}/include)
+
+# ImGui
+set(IMGUI_DIR ../../)
+include_directories(${IMGUI_DIR})
+
+# Libraries
+find_library(VULKAN_LIBRARY
+  NAMES vulkan vulkan-1)
+set(LIBRARIES "glfw;${VULKAN_LIBRARY}")
+
+# Use vulkan headers from glfw:
+include_directories(${GLFW_DIR}/deps)
+
+file(GLOB sources *.cpp)
+
+add_executable(vulkan_example ${sources} ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp)
+target_link_libraries(vulkan_example ${LIBRARIES})

examples/vulkan_example/build_win32.bat

@@ -0,0 +1,4 @@
+@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 ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\..\*.cpp /FeDebug/vulkan_example.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 /libpath:%VULKAN_SDK%\bin32 glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
+

examples/vulkan_example/gen_spv.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+glslangValidator -V -o glsl_shader.frag.spv glsl_shader.frag
+glslangValidator -V -o glsl_shader.vert.spv glsl_shader.vert
+spirv-remap --map all --dce all --strip-all --input glsl_shader.frag.spv glsl_shader.vert.spv --output ./

examples/vulkan_example/glsl_shader.frag

@@ -0,0 +1,14 @@
+#version 450 core
+layout(location = 0, index = 0) out vec4 fColor;
+
+layout(set=0, binding=0) uniform sampler2D sTexture;
+
+in block{
+    vec4 Color;
+    vec2 UV;
+} In;
+
+void main()
+{
+    fColor = In.Color * texture(sTexture, In.UV.st);
+}

examples/vulkan_example/glsl_shader.vert

@@ -0,0 +1,21 @@
+#version 450 core
+layout(location = 0) in vec2 aPos;
+layout(location = 1) in vec2 aUV;
+layout(location = 2) in vec4 aColor;
+
+layout(push_constant) uniform uPushConstant{
+    vec2 uScale;
+    vec2 uTranslate;
+} pc;
+
+out block{
+    vec4 Color;
+    vec2 UV;
+} Out;
+
+void main()
+{
+    Out.Color = aColor;
+    Out.UV = aUV;
+    gl_Position = vec4(aPos*pc.uScale+pc.uTranslate, 0, 1);
+}

examples/vulkan_example/imgui_impl_glfw_vulkan.cpp

@@ -0,0 +1,935 @@
+// ImGui GLFW binding with Vulkan + shaders
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 5 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXX_CreateFontsTexture(), ImGui_ImplXXXX_NewFrame(), ImGui_ImplXXXX_Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+#include <imgui.h>
+
+// GLFW
+#define GLFW_INCLUDE_NONE
+#define GLFW_INCLUDE_VULKAN
+#include <GLFW/glfw3.h>
+#ifdef _WIN32
+#undef APIENTRY
+#define GLFW_EXPOSE_NATIVE_WIN32
+#define GLFW_EXPOSE_NATIVE_WGL
+#include <GLFW/glfw3native.h>
+#endif
+
+#include "imgui_impl_glfw_vulkan.h"
+
+// GLFW Data
+static GLFWwindow*  g_Window = NULL;
+static double       g_Time = 0.0f;
+static bool         g_MousePressed[3] = { false, false, false };
+static float        g_MouseWheel = 0.0f;
+
+// Vulkan Data
+static VkAllocationCallbacks* g_Allocator = NULL;
+static VkPhysicalDevice       g_Gpu = VK_NULL_HANDLE;
+static VkDevice               g_Device = VK_NULL_HANDLE;
+static VkRenderPass           g_RenderPass = VK_NULL_HANDLE;
+static VkPipelineCache        g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool       g_DescriptorPool = VK_NULL_HANDLE;
+static void (*g_CheckVkResult)(VkResult err) = NULL;
+
+static VkCommandBuffer        g_CommandBuffer = VK_NULL_HANDLE;
+static size_t                 g_BufferMemoryAlignment = 256;
+static VkPipelineCreateFlags  g_PipelineCreateFlags = 0;
+static int                    g_FrameIndex = 0;
+
+static VkDescriptorSetLayout  g_DescriptorSetLayout = VK_NULL_HANDLE;
+static VkPipelineLayout       g_PipelineLayout = VK_NULL_HANDLE;
+static VkDescriptorSet        g_DescriptorSet = VK_NULL_HANDLE;
+static VkPipeline             g_Pipeline = VK_NULL_HANDLE;
+
+static VkSampler              g_FontSampler = VK_NULL_HANDLE;
+static VkDeviceMemory         g_FontMemory = VK_NULL_HANDLE;
+static VkImage                g_FontImage = VK_NULL_HANDLE;
+static VkImageView            g_FontView = VK_NULL_HANDLE;
+
+static VkDeviceMemory         g_VertexBufferMemory[IMGUI_VK_QUEUED_FRAMES] = {};
+static VkDeviceMemory         g_IndexBufferMemory[IMGUI_VK_QUEUED_FRAMES] = {};
+static size_t                 g_VertexBufferSize[IMGUI_VK_QUEUED_FRAMES] = {};
+static size_t                 g_IndexBufferSize[IMGUI_VK_QUEUED_FRAMES] = {};
+static VkBuffer               g_VertexBuffer[IMGUI_VK_QUEUED_FRAMES] = {};
+static VkBuffer               g_IndexBuffer[IMGUI_VK_QUEUED_FRAMES] = {};
+
+static VkDeviceMemory         g_UploadBufferMemory = VK_NULL_HANDLE;
+static VkBuffer               g_UploadBuffer = VK_NULL_HANDLE;
+
+static unsigned char __glsl_shader_vert_spv[] = 
+{
+  0x03, 0x02, 0x23, 0x07, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x08, 0x00,
+  0x6c, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x02, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x11, 0x00, 0x02, 0x00, 0x20, 0x00, 0x00, 0x00,
+  0x11, 0x00, 0x02, 0x00, 0x21, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x06, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x47, 0x4c, 0x53, 0x4c, 0x2e, 0x73, 0x74, 0x64,
+  0x2e, 0x34, 0x35, 0x30, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x03, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x0a, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x1f, 0x16, 0x00, 0x00, 0x6d, 0x61, 0x69, 0x6e,
+  0x00, 0x00, 0x00, 0x00, 0x47, 0x11, 0x00, 0x00, 0x41, 0x14, 0x00, 0x00,
+  0x6a, 0x16, 0x00, 0x00, 0x42, 0x13, 0x00, 0x00, 0x80, 0x14, 0x00, 0x00,
+  0x47, 0x00, 0x03, 0x00, 0x1a, 0x04, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x47, 0x00, 0x04, 0x00, 0x41, 0x14, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00,
+  0x02, 0x00, 0x00, 0x00, 0x47, 0x00, 0x04, 0x00, 0x6a, 0x16, 0x00, 0x00,
+  0x1e, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x48, 0x00, 0x05, 0x00,
+  0xb1, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x05, 0x00, 0xb1, 0x02, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x48, 0x00, 0x05, 0x00, 0xb1, 0x02, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x0b, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x48, 0x00, 0x05, 0x00,
+  0xb1, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x47, 0x00, 0x03, 0x00, 0xb1, 0x02, 0x00, 0x00,
+  0x02, 0x00, 0x00, 0x00, 0x47, 0x00, 0x04, 0x00, 0x80, 0x14, 0x00, 0x00,
+  0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x05, 0x00,
+  0x06, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x05, 0x00, 0x06, 0x04, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
+  0x47, 0x00, 0x03, 0x00, 0x06, 0x04, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x47, 0x00, 0x04, 0x00, 0xfa, 0x16, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x13, 0x00, 0x02, 0x00, 0x08, 0x00, 0x00, 0x00,
+  0x21, 0x00, 0x03, 0x00, 0x02, 0x05, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
+  0x16, 0x00, 0x03, 0x00, 0x0d, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
+  0x17, 0x00, 0x04, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00,
+  0x04, 0x00, 0x00, 0x00, 0x17, 0x00, 0x04, 0x00, 0x13, 0x00, 0x00, 0x00,
+  0x0d, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x04, 0x00,
+  0x1a, 0x04, 0x00, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x04, 0x00, 0x97, 0x06, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0x1a, 0x04, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00, 0x97, 0x06, 0x00, 0x00,
+  0x47, 0x11, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x15, 0x00, 0x04, 0x00,
+  0x0c, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x2b, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x0b, 0x0a, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00, 0x9a, 0x02, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00,
+  0x9a, 0x02, 0x00, 0x00, 0x41, 0x14, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x04, 0x00, 0x9b, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0x1d, 0x00, 0x00, 0x00, 0x2b, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00,
+  0x0e, 0x0a, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00,
+  0x90, 0x02, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
+  0x3b, 0x00, 0x04, 0x00, 0x90, 0x02, 0x00, 0x00, 0x6a, 0x16, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00, 0x91, 0x02, 0x00, 0x00,
+  0x03, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x15, 0x00, 0x04, 0x00,
+  0x0b, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x2b, 0x00, 0x04, 0x00, 0x0b, 0x00, 0x00, 0x00, 0x0d, 0x0a, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x1c, 0x00, 0x04, 0x00, 0x7f, 0x02, 0x00, 0x00,
+  0x0d, 0x00, 0x00, 0x00, 0x0d, 0x0a, 0x00, 0x00, 0x1e, 0x00, 0x06, 0x00,
+  0xb1, 0x02, 0x00, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00,
+  0x7f, 0x02, 0x00, 0x00, 0x7f, 0x02, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00,
+  0x2e, 0x05, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xb1, 0x02, 0x00, 0x00,
+  0x3b, 0x00, 0x04, 0x00, 0x2e, 0x05, 0x00, 0x00, 0x42, 0x13, 0x00, 0x00,
+  0x03, 0x00, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00, 0x90, 0x02, 0x00, 0x00,
+  0x80, 0x14, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x04, 0x00,
+  0x06, 0x04, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x04, 0x00, 0x83, 0x06, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00,
+  0x06, 0x04, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00, 0x83, 0x06, 0x00, 0x00,
+  0xfa, 0x16, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00,
+  0x92, 0x02, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00,
+  0x2b, 0x00, 0x04, 0x00, 0x0d, 0x00, 0x00, 0x00, 0x0c, 0x0a, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x2b, 0x00, 0x04, 0x00, 0x0d, 0x00, 0x00, 0x00,
+  0x8a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x3f, 0x36, 0x00, 0x05, 0x00,
+  0x08, 0x00, 0x00, 0x00, 0x1f, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x02, 0x05, 0x00, 0x00, 0xf8, 0x00, 0x02, 0x00, 0x6b, 0x60, 0x00, 0x00,
+  0x3d, 0x00, 0x04, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x71, 0x4e, 0x00, 0x00,
+  0x41, 0x14, 0x00, 0x00, 0x41, 0x00, 0x05, 0x00, 0x9b, 0x02, 0x00, 0x00,
+  0xaa, 0x26, 0x00, 0x00, 0x47, 0x11, 0x00, 0x00, 0x0b, 0x0a, 0x00, 0x00,
+  0x3e, 0x00, 0x03, 0x00, 0xaa, 0x26, 0x00, 0x00, 0x71, 0x4e, 0x00, 0x00,
+  0x3d, 0x00, 0x04, 0x00, 0x13, 0x00, 0x00, 0x00, 0xda, 0x35, 0x00, 0x00,
+  0x6a, 0x16, 0x00, 0x00, 0x41, 0x00, 0x05, 0x00, 0x91, 0x02, 0x00, 0x00,
+  0xea, 0x50, 0x00, 0x00, 0x47, 0x11, 0x00, 0x00, 0x0e, 0x0a, 0x00, 0x00,
+  0x3e, 0x00, 0x03, 0x00, 0xea, 0x50, 0x00, 0x00, 0xda, 0x35, 0x00, 0x00,
+  0x3d, 0x00, 0x04, 0x00, 0x13, 0x00, 0x00, 0x00, 0xc7, 0x35, 0x00, 0x00,
+  0x80, 0x14, 0x00, 0x00, 0x41, 0x00, 0x05, 0x00, 0x92, 0x02, 0x00, 0x00,
+  0xef, 0x56, 0x00, 0x00, 0xfa, 0x16, 0x00, 0x00, 0x0b, 0x0a, 0x00, 0x00,
+  0x3d, 0x00, 0x04, 0x00, 0x13, 0x00, 0x00, 0x00, 0xe0, 0x29, 0x00, 0x00,
+  0xef, 0x56, 0x00, 0x00, 0x85, 0x00, 0x05, 0x00, 0x13, 0x00, 0x00, 0x00,
+  0xa0, 0x22, 0x00, 0x00, 0xc7, 0x35, 0x00, 0x00, 0xe0, 0x29, 0x00, 0x00,
+  0x41, 0x00, 0x05, 0x00, 0x92, 0x02, 0x00, 0x00, 0x42, 0x2c, 0x00, 0x00,
+  0xfa, 0x16, 0x00, 0x00, 0x0e, 0x0a, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00,
+  0x13, 0x00, 0x00, 0x00, 0x09, 0x60, 0x00, 0x00, 0x42, 0x2c, 0x00, 0x00,
+  0x81, 0x00, 0x05, 0x00, 0x13, 0x00, 0x00, 0x00, 0xd1, 0x4e, 0x00, 0x00,
+  0xa0, 0x22, 0x00, 0x00, 0x09, 0x60, 0x00, 0x00, 0x51, 0x00, 0x05, 0x00,
+  0x0d, 0x00, 0x00, 0x00, 0xa1, 0x41, 0x00, 0x00, 0xd1, 0x4e, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x51, 0x00, 0x05, 0x00, 0x0d, 0x00, 0x00, 0x00,
+  0x84, 0x36, 0x00, 0x00, 0xd1, 0x4e, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x50, 0x00, 0x07, 0x00, 0x1d, 0x00, 0x00, 0x00, 0x54, 0x47, 0x00, 0x00,
+  0xa1, 0x41, 0x00, 0x00, 0x84, 0x36, 0x00, 0x00, 0x0c, 0x0a, 0x00, 0x00,
+  0x8a, 0x00, 0x00, 0x00, 0x41, 0x00, 0x05, 0x00, 0x9b, 0x02, 0x00, 0x00,
+  0x17, 0x2f, 0x00, 0x00, 0x42, 0x13, 0x00, 0x00, 0x0b, 0x0a, 0x00, 0x00,
+  0x3e, 0x00, 0x03, 0x00, 0x17, 0x2f, 0x00, 0x00, 0x54, 0x47, 0x00, 0x00,
+  0xfd, 0x00, 0x01, 0x00, 0x38, 0x00, 0x01, 0x00
+};
+static unsigned int __glsl_shader_vert_spv_len = 1172;
+
+static unsigned char __glsl_shader_frag_spv[] = 
+{
+  0x03, 0x02, 0x23, 0x07, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x08, 0x00,
+  0x6c, 0x5d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11, 0x00, 0x02, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x0b, 0x00, 0x06, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x47, 0x4c, 0x53, 0x4c, 0x2e, 0x73, 0x74, 0x64, 0x2e, 0x34, 0x35, 0x30,
+  0x00, 0x00, 0x00, 0x00, 0x0e, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x07, 0x00, 0x04, 0x00, 0x00, 0x00,
+  0x1f, 0x16, 0x00, 0x00, 0x6d, 0x61, 0x69, 0x6e, 0x00, 0x00, 0x00, 0x00,
+  0x7a, 0x0c, 0x00, 0x00, 0x35, 0x16, 0x00, 0x00, 0x10, 0x00, 0x03, 0x00,
+  0x1f, 0x16, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x47, 0x00, 0x04, 0x00,
+  0x7a, 0x0c, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x47, 0x00, 0x04, 0x00, 0x7a, 0x0c, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x47, 0x00, 0x03, 0x00, 0x1a, 0x04, 0x00, 0x00,
+  0x02, 0x00, 0x00, 0x00, 0x47, 0x00, 0x04, 0x00, 0xec, 0x14, 0x00, 0x00,
+  0x22, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x47, 0x00, 0x04, 0x00,
+  0xec, 0x14, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x13, 0x00, 0x02, 0x00, 0x08, 0x00, 0x00, 0x00, 0x21, 0x00, 0x03, 0x00,
+  0x02, 0x05, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x16, 0x00, 0x03, 0x00,
+  0x0d, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x17, 0x00, 0x04, 0x00,
+  0x1d, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x04, 0x00, 0x9a, 0x02, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
+  0x1d, 0x00, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00, 0x9a, 0x02, 0x00, 0x00,
+  0x7a, 0x0c, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x17, 0x00, 0x04, 0x00,
+  0x13, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
+  0x1e, 0x00, 0x04, 0x00, 0x1a, 0x04, 0x00, 0x00, 0x1d, 0x00, 0x00, 0x00,
+  0x13, 0x00, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00, 0x97, 0x06, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x1a, 0x04, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00,
+  0x97, 0x06, 0x00, 0x00, 0x35, 0x16, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x15, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x2b, 0x00, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00,
+  0x0b, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x04, 0x00,
+  0x9b, 0x02, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x1d, 0x00, 0x00, 0x00,
+  0x19, 0x00, 0x09, 0x00, 0x96, 0x00, 0x00, 0x00, 0x0d, 0x00, 0x00, 0x00,
+  0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0x1b, 0x00, 0x03, 0x00, 0xfe, 0x01, 0x00, 0x00, 0x96, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x04, 0x00, 0x7b, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+  0xfe, 0x01, 0x00, 0x00, 0x3b, 0x00, 0x04, 0x00, 0x7b, 0x04, 0x00, 0x00,
+  0xec, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2b, 0x00, 0x04, 0x00,
+  0x0c, 0x00, 0x00, 0x00, 0x0e, 0x0a, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x20, 0x00, 0x04, 0x00, 0x90, 0x02, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+  0x13, 0x00, 0x00, 0x00, 0x36, 0x00, 0x05, 0x00, 0x08, 0x00, 0x00, 0x00,
+  0x1f, 0x16, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x05, 0x00, 0x00,
+  0xf8, 0x00, 0x02, 0x00, 0x6b, 0x5d, 0x00, 0x00, 0x41, 0x00, 0x05, 0x00,
+  0x9b, 0x02, 0x00, 0x00, 0x8d, 0x1b, 0x00, 0x00, 0x35, 0x16, 0x00, 0x00,
+  0x0b, 0x0a, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00, 0x1d, 0x00, 0x00, 0x00,
+  0x0b, 0x40, 0x00, 0x00, 0x8d, 0x1b, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00,
+  0xfe, 0x01, 0x00, 0x00, 0xc0, 0x36, 0x00, 0x00, 0xec, 0x14, 0x00, 0x00,
+  0x41, 0x00, 0x05, 0x00, 0x90, 0x02, 0x00, 0x00, 0xc2, 0x43, 0x00, 0x00,
+  0x35, 0x16, 0x00, 0x00, 0x0e, 0x0a, 0x00, 0x00, 0x3d, 0x00, 0x04, 0x00,
+  0x13, 0x00, 0x00, 0x00, 0x02, 0x4e, 0x00, 0x00, 0xc2, 0x43, 0x00, 0x00,
+  0x57, 0x00, 0x05, 0x00, 0x1d, 0x00, 0x00, 0x00, 0xb9, 0x46, 0x00, 0x00,
+  0xc0, 0x36, 0x00, 0x00, 0x02, 0x4e, 0x00, 0x00, 0x85, 0x00, 0x05, 0x00,
+  0x1d, 0x00, 0x00, 0x00, 0xe4, 0x23, 0x00, 0x00, 0x0b, 0x40, 0x00, 0x00,
+  0xb9, 0x46, 0x00, 0x00, 0x3e, 0x00, 0x03, 0x00, 0x7a, 0x0c, 0x00, 0x00,
+  0xe4, 0x23, 0x00, 0x00, 0xfd, 0x00, 0x01, 0x00, 0x38, 0x00, 0x01, 0x00
+};
+static unsigned int __glsl_shader_frag_spv_len = 660;
+
+static uint32_t ImGui_ImplGlfwVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
+{
+    VkPhysicalDeviceMemoryProperties prop;
+    vkGetPhysicalDeviceMemoryProperties(g_Gpu, &prop);
+    for (uint32_t i = 0; i < prop.memoryTypeCount; i++)
+        if ((prop.memoryTypes[i].propertyFlags & properties) == properties && type_bits & (1<<i))
+            return i;
+    return 0xffffffff; // Unable to find memoryType
+}
+
+static void ImGui_ImplGlfwVulkan_VkResult(VkResult err)
+{
+    if (g_CheckVkResult)
+        g_CheckVkResult(err);
+}
+
+// This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
+void ImGui_ImplGlfwVulkan_RenderDrawLists(ImDrawData* draw_data)
+{
+    VkResult err;
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Create the Vertex Buffer:
+    size_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
+    if (!g_VertexBuffer[g_FrameIndex] || g_VertexBufferSize[g_FrameIndex] < vertex_size)
+    {
+        if (g_VertexBuffer[g_FrameIndex])
+            vkDestroyBuffer(g_Device, g_VertexBuffer[g_FrameIndex], g_Allocator);
+        if (g_VertexBufferMemory[g_FrameIndex])
+            vkFreeMemory(g_Device, g_VertexBufferMemory[g_FrameIndex], g_Allocator);
+        size_t vertex_buffer_size = ((vertex_size-1) / g_BufferMemoryAlignment+1) * g_BufferMemoryAlignment;
+        VkBufferCreateInfo buffer_info = {};
+        buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+        buffer_info.size = vertex_buffer_size;
+        buffer_info.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
+        buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_VertexBuffer[g_FrameIndex]);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        VkMemoryRequirements req;
+        vkGetBufferMemoryRequirements(g_Device, g_VertexBuffer[g_FrameIndex], &req);
+        g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
+        VkMemoryAllocateInfo alloc_info = {};
+        alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+        alloc_info.allocationSize = req.size;
+        alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
+        err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_VertexBufferMemory[g_FrameIndex]);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        err = vkBindBufferMemory(g_Device, g_VertexBuffer[g_FrameIndex], g_VertexBufferMemory[g_FrameIndex], 0);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        g_VertexBufferSize[g_FrameIndex] = vertex_buffer_size;
+    }
+
+    // Create the Index Buffer:
+    size_t index_size = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
+    if (!g_IndexBuffer[g_FrameIndex] || g_IndexBufferSize[g_FrameIndex] < index_size)
+    {
+        if (g_IndexBuffer[g_FrameIndex])
+            vkDestroyBuffer(g_Device, g_IndexBuffer[g_FrameIndex], g_Allocator);
+        if (g_IndexBufferMemory[g_FrameIndex])
+            vkFreeMemory(g_Device, g_IndexBufferMemory[g_FrameIndex], g_Allocator);
+        size_t index_buffer_size = ((index_size-1) / g_BufferMemoryAlignment+1) * g_BufferMemoryAlignment;
+        VkBufferCreateInfo buffer_info = {};
+        buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+        buffer_info.size = index_buffer_size;
+        buffer_info.usage = VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
+        buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_IndexBuffer[g_FrameIndex]);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        VkMemoryRequirements req;
+        vkGetBufferMemoryRequirements(g_Device, g_IndexBuffer[g_FrameIndex], &req);
+        g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
+        VkMemoryAllocateInfo alloc_info = {};
+        alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+        alloc_info.allocationSize = req.size;
+        alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
+        err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_IndexBufferMemory[g_FrameIndex]);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        err = vkBindBufferMemory(g_Device, g_IndexBuffer[g_FrameIndex], g_IndexBufferMemory[g_FrameIndex], 0);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        g_IndexBufferSize[g_FrameIndex] = index_buffer_size;
+    }
+
+    // Upload Vertex and index Data:
+    {
+        ImDrawVert* vtx_dst;
+        ImDrawIdx* idx_dst;
+        err = vkMapMemory(g_Device, g_VertexBufferMemory[g_FrameIndex], 0, vertex_size, 0, (void**)(&vtx_dst));
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        err = vkMapMemory(g_Device, g_IndexBufferMemory[g_FrameIndex], 0, index_size, 0, (void**)(&idx_dst));
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        for (int n = 0; n < draw_data->CmdListsCount; n++)
+        {
+            const ImDrawList* cmd_list = draw_data->CmdLists[n];
+            memcpy(vtx_dst, &cmd_list->VtxBuffer[0], cmd_list->VtxBuffer.size() * sizeof(ImDrawVert));
+            memcpy(idx_dst, &cmd_list->IdxBuffer[0], cmd_list->IdxBuffer.size() * sizeof(ImDrawIdx));
+            vtx_dst += cmd_list->VtxBuffer.size();
+            idx_dst += cmd_list->IdxBuffer.size();
+        }
+        VkMappedMemoryRange range[2] = {};
+        range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
+        range[0].memory = g_VertexBufferMemory[g_FrameIndex];
+        range[0].size = vertex_size;
+        range[1].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
+        range[1].memory = g_IndexBufferMemory[g_FrameIndex];
+        range[1].size = index_size;
+        err = vkFlushMappedMemoryRanges(g_Device, 2, range);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        vkUnmapMemory(g_Device, g_VertexBufferMemory[g_FrameIndex]);
+        vkUnmapMemory(g_Device, g_IndexBufferMemory[g_FrameIndex]);
+    }
+
+    // Bind pipeline and descriptor sets:
+    {
+        vkCmdBindPipeline(g_CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_Pipeline);
+        VkDescriptorSet desc_set[1] = {g_DescriptorSet};
+        vkCmdBindDescriptorSets(g_CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, g_PipelineLayout, 0, 1, desc_set, 0, NULL);
+    }
+
+    // Bind Vertex And Index Buffer:
+    {
+        VkBuffer vertex_buffers[1] = {g_VertexBuffer[g_FrameIndex]};
+        VkDeviceSize vertex_offset[1] = {0};
+        vkCmdBindVertexBuffers(g_CommandBuffer, 0, 1, vertex_buffers, vertex_offset);
+        vkCmdBindIndexBuffer(g_CommandBuffer, g_IndexBuffer[g_FrameIndex], 0, VK_INDEX_TYPE_UINT16);
+    }
+
+    // Setup viewport:
+    {
+        VkViewport viewport;
+        viewport.x = 0;
+        viewport.y = 0;
+        viewport.width = ImGui::GetIO().DisplaySize.x;
+        viewport.height = ImGui::GetIO().DisplaySize.y;
+        viewport.minDepth = 0.0f;
+        viewport.maxDepth = 1.0f;
+        vkCmdSetViewport(g_CommandBuffer, 0, 1, &viewport);
+    }
+
+    // Setup scale and translation:
+    {
+        float scale[2];
+        scale[0] = 2.0f/io.DisplaySize.x;
+        scale[1] = 2.0f/io.DisplaySize.y;
+        float translate[2];
+        translate[0] = -1.0f;
+        translate[1] = -1.0f;
+        vkCmdPushConstants(g_CommandBuffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 0, sizeof(float) * 2, scale);
+        vkCmdPushConstants(g_CommandBuffer, g_PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, sizeof(float) * 2, sizeof(float) * 2, translate);
+    }
+
+    // Render the command lists:
+    int vtx_offset = 0;
+    int idx_offset = 0;
+    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)
+            {
+                pcmd->UserCallback(cmd_list, pcmd);
+            }
+            else
+            {
+                VkRect2D scissor;
+                scissor.offset.x = static_cast<int32_t>(pcmd->ClipRect.x);
+                scissor.offset.y = static_cast<int32_t>(pcmd->ClipRect.y);
+                scissor.extent.width = static_cast<uint32_t>(pcmd->ClipRect.z - pcmd->ClipRect.x);
+                scissor.extent.height = static_cast<uint32_t>(pcmd->ClipRect.w - pcmd->ClipRect.y + 1); // TODO: + 1??????
+                vkCmdSetScissor(g_CommandBuffer, 0, 1, &scissor);
+                vkCmdDrawIndexed(g_CommandBuffer, pcmd->ElemCount, 1, idx_offset, vtx_offset, 0);
+            }
+            idx_offset += pcmd->ElemCount;
+        }
+        vtx_offset += cmd_list->VtxBuffer.size();
+    }
+}
+
+static const char* ImGui_ImplGlfwVulkan_GetClipboardText()
+{
+    return glfwGetClipboardString(g_Window);
+}
+
+static void ImGui_ImplGlfwVulkan_SetClipboardText(const char* text)
+{
+    glfwSetClipboardString(g_Window, text);
+}
+
+void ImGui_ImplGlfwVulkan_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/)
+{
+    if (action == GLFW_PRESS && button >= 0 && button < 3)
+        g_MousePressed[button] = true;
+}
+
+void ImGui_ImplGlfwVulkan_ScrollCallback(GLFWwindow*, double /*xoffset*/, double yoffset)
+{
+    g_MouseWheel += (float)yoffset; // Use fractional mouse wheel, 1.0 unit 5 lines.
+}
+
+void ImGui_ImplGlfwVulkan_KeyCallback(GLFWwindow*, int key, int, int action, int 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
+    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_ImplGlfwVulkan_CharCallback(GLFWwindow*, unsigned int c)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    if (c > 0 && c < 0x10000)
+        io.AddInputCharacter((unsigned short)c);
+}
+
+bool ImGui_ImplGlfwVulkan_CreateFontsTexture(VkCommandBuffer command_buffer)
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    unsigned char* pixels;
+    int width, height;
+    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
+    size_t upload_size = width*height*4*sizeof(char);
+
+    VkResult err;
+
+    // Create the Image:
+    {
+        VkImageCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
+        info.imageType = VK_IMAGE_TYPE_2D;
+        info.format = VK_FORMAT_R8G8B8A8_UNORM;
+        info.extent.width = width;
+        info.extent.height = height;
+        info.extent.depth = 1;
+        info.mipLevels = 1;
+        info.arrayLayers = 1;
+        info.samples = VK_SAMPLE_COUNT_1_BIT;
+        info.tiling = VK_IMAGE_TILING_OPTIMAL;
+        info.usage = VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
+        info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+        err = vkCreateImage(g_Device, &info, g_Allocator, &g_FontImage);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        VkMemoryRequirements req;
+        vkGetImageMemoryRequirements(g_Device, g_FontImage, &req);
+        VkMemoryAllocateInfo alloc_info = {};
+        alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+        alloc_info.allocationSize = req.size;
+        alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, req.memoryTypeBits);
+        err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_FontMemory);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        err = vkBindImageMemory(g_Device, g_FontImage, g_FontMemory, 0);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    // Create the Image View:
+    {
+        VkResult err;
+        VkImageViewCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+        info.image = g_FontImage;
+        info.viewType = VK_IMAGE_VIEW_TYPE_2D;
+        info.format = VK_FORMAT_R8G8B8A8_UNORM;
+        info.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        info.subresourceRange.levelCount = 1;
+        info.subresourceRange.layerCount = 1;
+        err = vkCreateImageView(g_Device, &info, g_Allocator, &g_FontView);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    // Update the Descriptor Set:
+    {
+        VkDescriptorImageInfo desc_image[1] = {};
+        desc_image[0].sampler = g_FontSampler;
+        desc_image[0].imageView = g_FontView;
+        desc_image[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        VkWriteDescriptorSet write_desc[1] = {};
+        write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+        write_desc[0].dstSet = g_DescriptorSet;
+        write_desc[0].descriptorCount = 1;
+        write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+        write_desc[0].pImageInfo = desc_image;
+        vkUpdateDescriptorSets(g_Device, 1, write_desc, 0, NULL);
+    }
+
+    // Create the Upload Buffer:
+    {
+        VkBufferCreateInfo buffer_info = {};
+        buffer_info.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
+        buffer_info.size = upload_size;
+        buffer_info.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
+        buffer_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        err = vkCreateBuffer(g_Device, &buffer_info, g_Allocator, &g_UploadBuffer);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        VkMemoryRequirements req;
+        vkGetBufferMemoryRequirements(g_Device, g_UploadBuffer, &req);
+        g_BufferMemoryAlignment = (g_BufferMemoryAlignment > req.alignment) ? g_BufferMemoryAlignment : req.alignment;
+        VkMemoryAllocateInfo alloc_info = {};
+        alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
+        alloc_info.allocationSize = req.size;
+        alloc_info.memoryTypeIndex = ImGui_ImplGlfwVulkan_MemoryType(VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT, req.memoryTypeBits);
+        err = vkAllocateMemory(g_Device, &alloc_info, g_Allocator, &g_UploadBufferMemory);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        err = vkBindBufferMemory(g_Device, g_UploadBuffer, g_UploadBufferMemory, 0);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    // Upload to Buffer:
+    {
+        char* map = NULL;
+        err = vkMapMemory(g_Device, g_UploadBufferMemory, 0, upload_size, 0, (void**)(&map));
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        memcpy(map, pixels, upload_size);
+        VkMappedMemoryRange range[1] = {};
+        range[0].sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
+        range[0].memory = g_UploadBufferMemory;
+        range[0].size = upload_size;
+        err = vkFlushMappedMemoryRanges(g_Device, 1, range);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        vkUnmapMemory(g_Device, g_UploadBufferMemory);
+    }
+    // Copy to Image:
+    {
+        VkImageMemoryBarrier copy_barrier[1] = {};
+        copy_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
+        copy_barrier[0].dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+        copy_barrier[0].oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+        copy_barrier[0].newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
+        copy_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        copy_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        copy_barrier[0].image = g_FontImage;
+        copy_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        copy_barrier[0].subresourceRange.levelCount = 1;
+        copy_barrier[0].subresourceRange.layerCount = 1;
+        vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, NULL, 0, NULL, 1, copy_barrier);
+
+        VkBufferImageCopy region = {};
+        region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        region.imageSubresource.layerCount = 1;
+        region.imageExtent.width = width;
+        region.imageExtent.height = height;
+        vkCmdCopyBufferToImage(command_buffer, g_UploadBuffer, g_FontImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region);
+
+        VkImageMemoryBarrier use_barrier[1] = {};
+        use_barrier[0].sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
+        use_barrier[0].srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
+        use_barrier[0].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;
+        use_barrier[0].oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
+        use_barrier[0].newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+        use_barrier[0].srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        use_barrier[0].dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        use_barrier[0].image = g_FontImage;
+        use_barrier[0].subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        use_barrier[0].subresourceRange.levelCount = 1;
+        use_barrier[0].subresourceRange.layerCount = 1;
+        vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT, 0, 0, NULL, 0, NULL, 1, use_barrier);
+    }
+
+    // Store our identifier
+    io.Fonts->TexID = (void *)(intptr_t)g_FontImage;
+
+    return true;
+}
+
+bool ImGui_ImplGlfwVulkan_CreateDeviceObjects()
+{
+    VkResult err;
+    VkShaderModule vert_module;
+    VkShaderModule frag_module;
+
+    // Create The Shader Modules:
+    {
+        VkShaderModuleCreateInfo vert_info = {};
+        vert_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+        vert_info.codeSize = __glsl_shader_vert_spv_len;
+        vert_info.pCode = (uint32_t*)__glsl_shader_vert_spv;
+        err = vkCreateShaderModule(g_Device, &vert_info, g_Allocator, &vert_module);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+        VkShaderModuleCreateInfo frag_info = {};
+        frag_info.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
+        frag_info.codeSize = __glsl_shader_frag_spv_len;
+        frag_info.pCode = (uint32_t*)__glsl_shader_frag_spv;
+        err = vkCreateShaderModule(g_Device, &frag_info, g_Allocator, &frag_module);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    if (!g_FontSampler)
+    {
+        VkSamplerCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
+        info.magFilter = VK_FILTER_LINEAR;
+        info.minFilter = VK_FILTER_LINEAR;
+        info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
+        info.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
+        info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
+        info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
+        info.minLod = -1000;
+        info.maxLod = 1000;
+        err = vkCreateSampler(g_Device, &info, g_Allocator, &g_FontSampler);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    if (!g_DescriptorSetLayout)
+    {
+        VkSampler sampler[1] = {g_FontSampler};
+        VkDescriptorSetLayoutBinding binding[1] = {};
+        binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+        binding[0].descriptorCount = 1;
+        binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
+        binding[0].pImmutableSamplers = sampler;
+        VkDescriptorSetLayoutCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
+        info.bindingCount = 1;
+        info.pBindings = binding;
+        err = vkCreateDescriptorSetLayout(g_Device, &info, g_Allocator, &g_DescriptorSetLayout);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    // Create Descriptor Set:
+    {
+        VkDescriptorSetAllocateInfo alloc_info = {};
+        alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
+        alloc_info.descriptorPool = g_DescriptorPool;
+        alloc_info.descriptorSetCount = 1;
+        alloc_info.pSetLayouts = &g_DescriptorSetLayout;
+        err = vkAllocateDescriptorSets(g_Device, &alloc_info, &g_DescriptorSet);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    if (!g_PipelineLayout)
+    {
+        VkPushConstantRange push_constants[2] = {};
+        push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
+        push_constants[0].offset = sizeof(float) * 0;
+        push_constants[0].size = sizeof(float) * 2;
+        push_constants[1].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
+        push_constants[1].offset = sizeof(float) * 2;
+        push_constants[1].size = sizeof(float) * 2;
+        VkDescriptorSetLayout set_layout[1] = {g_DescriptorSetLayout};
+        VkPipelineLayoutCreateInfo layout_info = {};
+        layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+        layout_info.setLayoutCount = 1;
+        layout_info.pSetLayouts = set_layout;
+        layout_info.pushConstantRangeCount = 2;
+        layout_info.pPushConstantRanges = push_constants;
+        err = vkCreatePipelineLayout(g_Device, &layout_info, g_Allocator, &g_PipelineLayout);
+        ImGui_ImplGlfwVulkan_VkResult(err);
+    }
+
+    VkPipelineShaderStageCreateInfo stage[2] = {};
+    stage[0].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
+    stage[0].stage = VK_SHADER_STAGE_VERTEX_BIT;
+    stage[0].module = vert_module;
+    stage[0].pName = "main";
+    stage[1].sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
+    stage[1].stage = VK_SHADER_STAGE_FRAGMENT_BIT;
+    stage[1].module = frag_module;
+    stage[1].pName = "main";
+
+    VkVertexInputBindingDescription binding_desc[1] = {};
+    binding_desc[0].stride = sizeof(ImDrawVert);
+    binding_desc[0].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
+
+    VkVertexInputAttributeDescription attribute_desc[3] = {};
+    attribute_desc[0].location = 0;
+    attribute_desc[0].binding = binding_desc[0].binding;
+    attribute_desc[0].format = VK_FORMAT_R32G32_SFLOAT;
+    attribute_desc[0].offset = (size_t)(&((ImDrawVert*)0)->pos);
+    attribute_desc[1].location = 1;
+    attribute_desc[1].binding = binding_desc[0].binding;
+    attribute_desc[1].format = VK_FORMAT_R32G32_SFLOAT;
+    attribute_desc[1].offset = (size_t)(&((ImDrawVert*)0)->uv);
+    attribute_desc[2].location = 2;
+    attribute_desc[2].binding = binding_desc[0].binding;
+    attribute_desc[2].format = VK_FORMAT_R8G8B8A8_UNORM;
+    attribute_desc[2].offset = (size_t)(&((ImDrawVert*)0)->col);
+
+    VkPipelineVertexInputStateCreateInfo vertex_info = {};
+    vertex_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
+    vertex_info.vertexBindingDescriptionCount = 1;
+    vertex_info.pVertexBindingDescriptions = binding_desc;
+    vertex_info.vertexAttributeDescriptionCount = 3;
+    vertex_info.pVertexAttributeDescriptions = attribute_desc;
+
+    VkPipelineInputAssemblyStateCreateInfo ia_info = {};
+    ia_info.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
+    ia_info.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST;
+
+    VkPipelineViewportStateCreateInfo viewport_info = {};
+    viewport_info.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
+    viewport_info.viewportCount = 1;
+    viewport_info.scissorCount = 1;
+
+    VkPipelineRasterizationStateCreateInfo raster_info = {};
+    raster_info.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
+    raster_info.polygonMode = VK_POLYGON_MODE_FILL;
+    raster_info.cullMode = VK_CULL_MODE_NONE;
+    raster_info.frontFace = VK_FRONT_FACE_COUNTER_CLOCKWISE;
+
+    VkPipelineMultisampleStateCreateInfo ms_info = {};
+    ms_info.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
+    ms_info.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
+
+    VkPipelineColorBlendAttachmentState color_attachment[1] = {};
+    color_attachment[0].blendEnable = VK_TRUE;
+    color_attachment[0].srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
+    color_attachment[0].dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
+    color_attachment[0].colorBlendOp = VK_BLEND_OP_ADD;
+    color_attachment[0].srcAlphaBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
+    color_attachment[0].dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
+    color_attachment[0].alphaBlendOp = VK_BLEND_OP_ADD;
+    color_attachment[0].colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
+
+    VkPipelineColorBlendStateCreateInfo blend_info = {};
+    blend_info.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
+    blend_info.attachmentCount = 1;
+    blend_info.pAttachments = color_attachment;
+
+    VkDynamicState dynamic_states[2] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
+    VkPipelineDynamicStateCreateInfo dynamic_state = {};
+    dynamic_state.dynamicStateCount = 2;
+    dynamic_state.pDynamicStates = dynamic_states;
+
+    VkGraphicsPipelineCreateInfo info = {};
+    info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
+    info.flags = g_PipelineCreateFlags;
+    info.stageCount = 2;
+    info.pStages = stage;
+    info.pVertexInputState = &vertex_info;
+    info.pInputAssemblyState = &ia_info;
+    info.pViewportState = &viewport_info;
+    info.pRasterizationState = &raster_info;
+    info.pMultisampleState = &ms_info;
+    info.pColorBlendState = &blend_info;
+    info.pDynamicState = &dynamic_state;
+    info.layout = g_PipelineLayout;
+    info.renderPass = g_RenderPass;
+    err = vkCreateGraphicsPipelines(g_Device, g_PipelineCache, 1, &info, g_Allocator, &g_Pipeline);
+    ImGui_ImplGlfwVulkan_VkResult(err);
+
+    vkDestroyShaderModule(g_Device, vert_module, g_Allocator);
+    vkDestroyShaderModule(g_Device, frag_module, g_Allocator);
+
+    return true;
+}
+
+void    ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects()
+{
+    if (g_UploadBuffer)
+    {
+        vkDestroyBuffer(g_Device, g_UploadBuffer, g_Allocator);
+        g_UploadBuffer = VK_NULL_HANDLE;
+    }
+    if (g_UploadBufferMemory)
+    {
+        vkFreeMemory(g_Device, g_UploadBufferMemory, g_Allocator);
+        g_UploadBufferMemory = VK_NULL_HANDLE;
+    }
+}
+
+void    ImGui_ImplGlfwVulkan_InvalidateDeviceObjects()
+{
+    ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects();
+    for (int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++)
+    {
+        if (g_VertexBuffer[i])
+            vkDestroyBuffer(g_Device, g_VertexBuffer[i], g_Allocator);
+        if (g_VertexBufferMemory[i])
+            vkFreeMemory(g_Device, g_VertexBufferMemory[i], g_Allocator);
+        if (g_IndexBuffer[i])
+            vkDestroyBuffer(g_Device, g_IndexBuffer[i], g_Allocator);
+        if (g_IndexBufferMemory[i])
+            vkFreeMemory(g_Device, g_IndexBufferMemory[i], g_Allocator);
+    }
+
+    if (g_FontView)
+        vkDestroyImageView(g_Device, g_FontView, g_Allocator);
+    if (g_FontImage)
+        vkDestroyImage(g_Device, g_FontImage, g_Allocator);
+    if (g_FontMemory)
+        vkFreeMemory(g_Device, g_FontMemory, g_Allocator);
+    if (g_FontSampler)
+        vkDestroySampler(g_Device, g_FontSampler, g_Allocator);
+
+    if (g_DescriptorSetLayout)
+        vkDestroyDescriptorSetLayout(g_Device, g_DescriptorSetLayout, g_Allocator);
+    if (g_PipelineLayout)
+        vkDestroyPipelineLayout(g_Device, g_PipelineLayout, g_Allocator);
+    if (g_Pipeline)
+        vkDestroyPipeline(g_Device, g_Pipeline, g_Allocator);
+}
+
+bool    ImGui_ImplGlfwVulkan_Init(GLFWwindow* window, bool install_callbacks, ImGui_ImplGlfwVulkan_Init_Data *init_data)
+{
+    g_Allocator = init_data->allocator;
+    g_Gpu = init_data->gpu;
+    g_Device = init_data->device;
+    g_RenderPass = init_data->render_pass;
+    g_PipelineCache = init_data->pipeline_cache;
+    g_DescriptorPool = init_data->descriptor_pool;
+    g_CheckVkResult = init_data->check_vk_result;
+
+    g_Window = window;
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB;                         // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT;
+    io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT;
+    io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP;
+    io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN;
+    io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP;
+    io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN;
+    io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME;
+    io.KeyMap[ImGuiKey_End] = GLFW_KEY_END;
+    io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE;
+    io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE;
+    io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER;
+    io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE;
+    io.KeyMap[ImGuiKey_A] = GLFW_KEY_A;
+    io.KeyMap[ImGuiKey_C] = GLFW_KEY_C;
+    io.KeyMap[ImGuiKey_V] = GLFW_KEY_V;
+    io.KeyMap[ImGuiKey_X] = GLFW_KEY_X;
+    io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y;
+    io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z;
+
+    io.RenderDrawListsFn = ImGui_ImplGlfwVulkan_RenderDrawLists;       // Alternatively you can set this to NULL and call ImGui::GetDrawData() after ImGui::Render() to get the same ImDrawData pointer.
+    io.SetClipboardTextFn = ImGui_ImplGlfwVulkan_SetClipboardText;
+    io.GetClipboardTextFn = ImGui_ImplGlfwVulkan_GetClipboardText;
+#ifdef _WIN32
+    io.ImeWindowHandle = glfwGetWin32Window(g_Window);
+#endif
+
+    if (install_callbacks)
+    {
+        glfwSetMouseButtonCallback(window, ImGui_ImplGlfwVulkan_MouseButtonCallback);
+        glfwSetScrollCallback(window, ImGui_ImplGlfwVulkan_ScrollCallback);
+        glfwSetKeyCallback(window, ImGui_ImplGlfwVulkan_KeyCallback);
+        glfwSetCharCallback(window, ImGui_ImplGlfwVulkan_CharCallback);
+    }
+
+    ImGui_ImplGlfwVulkan_CreateDeviceObjects();
+
+    return true;
+}
+
+void ImGui_ImplGlfwVulkan_Shutdown()
+{
+    ImGui_ImplGlfwVulkan_InvalidateDeviceObjects();
+    ImGui::Shutdown();
+}
+
+void ImGui_ImplGlfwVulkan_NewFrame()
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    // 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);
+
+    // Setup time step
+    double current_time =  glfwGetTime();
+    io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f);
+    g_Time = current_time;
+
+    // Setup inputs
+    // (we already got mouse wheel, keyboard keys & characters from glfw callbacks polled in glfwPollEvents())
+    if (glfwGetWindowAttrib(g_Window, GLFW_FOCUSED))
+    {
+        double mouse_x, mouse_y;
+        glfwGetCursorPos(g_Window, &mouse_x, &mouse_y);
+        io.MousePos = ImVec2((float)mouse_x, (float)mouse_y);   // Mouse position in screen coordinates (set to -1,-1 if no mouse / on another screen, etc.)
+    }
+    else
+    {
+        io.MousePos = ImVec2(-1,-1);
+    }
+
+    for (int i = 0; i < 3; i++)
+    {
+        io.MouseDown[i] = g_MousePressed[i] || glfwGetMouseButton(g_Window, i) != 0;    // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
+        g_MousePressed[i] = false;
+    }
+
+    io.MouseWheel = g_MouseWheel;
+    g_MouseWheel = 0.0f;
+
+    // Hide OS mouse cursor if ImGui is drawing it
+    glfwSetInputMode(g_Window, GLFW_CURSOR, io.MouseDrawCursor ? GLFW_CURSOR_HIDDEN : GLFW_CURSOR_NORMAL);
+
+    // Start the frame
+    ImGui::NewFrame();
+}
+void ImGui_ImplGlfwVulkan_Render(VkCommandBuffer command_buffer)
+{
+    g_CommandBuffer = command_buffer;
+    ImGui::Render();
+    g_CommandBuffer = VK_NULL_HANDLE;
+    g_FrameIndex = (g_FrameIndex + 1) % IMGUI_VK_QUEUED_FRAMES;
+}

examples/vulkan_example/imgui_impl_glfw_vulkan.h

@@ -0,0 +1,40 @@
+// ImGui GLFW binding with Vulkan + shaders
+// You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
+// If you use this binding you'll need to call 5 functions: ImGui_ImplXXXX_Init(), ImGui_ImplXXX_CreateFontsTexture(), ImGui_ImplXXXX_NewFrame(), ImGui_ImplXXXX_Render() and ImGui_ImplXXXX_Shutdown().
+// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
+// https://github.com/ocornut/imgui
+
+struct GLFWwindow;
+
+#define IMGUI_VK_QUEUED_FRAMES 2
+
+struct ImGui_ImplGlfwVulkan_Init_Data
+{
+    VkAllocationCallbacks* allocator;
+    VkPhysicalDevice       gpu;
+    VkDevice               device;
+    VkRenderPass           render_pass;
+    VkPipelineCache        pipeline_cache;
+    VkDescriptorPool       descriptor_pool;
+    void (*check_vk_result)(VkResult err);
+};
+
+IMGUI_API bool        ImGui_ImplGlfwVulkan_Init(GLFWwindow* window, bool install_callbacks, ImGui_ImplGlfwVulkan_Init_Data *init_data);
+IMGUI_API void        ImGui_ImplGlfwVulkan_Shutdown();
+IMGUI_API void        ImGui_ImplGlfwVulkan_NewFrame();
+IMGUI_API void        ImGui_ImplGlfwVulkan_Render(VkCommandBuffer command_buffer);
+
+// Use if you want to reset your rendering device without losing ImGui state.
+IMGUI_API void        ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects();
+IMGUI_API void        ImGui_ImplGlfwVulkan_InvalidateDeviceObjects();
+IMGUI_API bool        ImGui_ImplGlfwVulkan_CreateFontsTexture(VkCommandBuffer command_buffer);
+IMGUI_API bool        ImGui_ImplGlfwVulkan_CreateDeviceObjects();
+
+// 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.
+IMGUI_API void        ImGui_ImplGlfwVulkan_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods);
+IMGUI_API void        ImGui_ImplGlfwVulkan_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset);
+IMGUI_API void        ImGui_ImplGlfwVulkan_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+IMGUI_API void        ImGui_ImplGlfwVulkan_CharCallback(GLFWwindow* window, unsigned int c);
+

examples/vulkan_example/main.cpp

@@ -0,0 +1,539 @@
+// ImGui - standalone example application for Glfw + Vulkan, 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 <stdio.h>          // printf, fprintf
+#include <stdlib.h>         // abort
+#define GLFW_INCLUDE_NONE
+#define GLFW_INCLUDE_VULKAN
+#include <GLFW/glfw3.h>
+
+#include "imgui_impl_glfw_vulkan.h"
+
+#define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16
+
+static VkAllocationCallbacks*   g_Allocator = NULL;
+static VkInstance               g_Instance = VK_NULL_HANDLE;
+static VkSurfaceKHR             g_Surface = VK_NULL_HANDLE;
+static VkPhysicalDevice         g_Gpu = VK_NULL_HANDLE;
+static VkDevice                 g_Device = VK_NULL_HANDLE;
+static VkSwapchainKHR           g_Swapchain = VK_NULL_HANDLE;
+static VkRenderPass             g_RenderPass = VK_NULL_HANDLE;
+static uint32_t                 g_QueueFamily = 0;
+static VkQueue                  g_Queue = VK_NULL_HANDLE;
+
+static VkFormat                 g_Format = VK_FORMAT_B8G8R8A8_UNORM;
+static VkColorSpaceKHR          g_ColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+static VkImageSubresourceRange  g_ImageRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
+
+static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
+
+static int                      fb_width, fb_height;
+static uint32_t                 g_BackBufferIndex = 0;
+static uint32_t                 g_BackBufferCount = 0;
+static VkImage                  g_BackBuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
+static VkImageView              g_BackBufferView[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
+static VkFramebuffer            g_Framebuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
+
+static uint32_t                 g_FrameIndex = 0;
+static VkCommandPool            g_CommandPool[IMGUI_VK_QUEUED_FRAMES];
+static VkCommandBuffer          g_CommandBuffer[IMGUI_VK_QUEUED_FRAMES];
+static VkFence                  g_Fence[IMGUI_VK_QUEUED_FRAMES];
+static VkSemaphore              g_Semaphore[IMGUI_VK_QUEUED_FRAMES];
+
+static VkClearValue             g_ClearValue = {};
+
+static void check_vk_result(VkResult err)
+{
+    if (err == 0) return;
+    printf("VkResult %d\n", err);
+    if (err < 0) 
+        abort();
+}
+
+static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
+{
+    VkResult err;
+    VkSwapchainKHR old_swapchain = g_Swapchain;
+    err = vkDeviceWaitIdle(g_Device);
+    check_vk_result(err);
+
+    // Destroy old Framebuffer:
+    for (uint32_t i=0; i<g_BackBufferCount; i++)
+        if (g_BackBufferView[i])
+            vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
+     for(uint32_t i=0; i<g_BackBufferCount; i++)
+        if (g_Framebuffer[i])
+            vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
+    if (g_RenderPass)
+        vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
+
+    // Create Swapchain:
+    {
+        VkSwapchainCreateInfoKHR info = {};
+        info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
+        info.surface = g_Surface;
+        info.imageFormat = g_Format;
+        info.imageColorSpace = g_ColorSpace;
+        info.imageArrayLayers = 1;
+        info.imageUsage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+        info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
+        info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+        info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
+        info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
+        info.clipped = VK_TRUE;
+        info.oldSwapchain = old_swapchain;
+        VkSurfaceCapabilitiesKHR cap;
+        err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(g_Gpu, g_Surface, &cap);
+        check_vk_result(err);
+        info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
+        if (cap.currentExtent.width == 0xffffffff)
+        {
+            fb_width = w;
+            fb_height = h;
+            info.imageExtent.width = fb_width;
+            info.imageExtent.height = fb_height;
+        }
+        else
+        {
+            fb_width = cap.currentExtent.width;
+            fb_height = cap.currentExtent.height;
+            info.imageExtent.width = fb_width;
+            info.imageExtent.height = fb_height;
+        }
+        err = vkCreateSwapchainKHR(g_Device, &info, g_Allocator, &g_Swapchain);
+        check_vk_result(err);
+        err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, NULL);
+        check_vk_result(err);
+        err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, g_BackBuffer);
+        check_vk_result(err);
+    }
+    if (old_swapchain)
+        vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
+
+    // Create the Render Pass:
+    {
+        VkAttachmentDescription attachment = {};
+        attachment.format = g_Format;
+        attachment.samples = VK_SAMPLE_COUNT_1_BIT;
+        attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
+        attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
+        attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
+        attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
+        attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
+        attachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+        VkAttachmentReference color_attachment = {};
+        color_attachment.attachment = 0;
+        color_attachment.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+        VkSubpassDescription subpass = {};
+        subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
+        subpass.colorAttachmentCount = 1;
+        subpass.pColorAttachments = &color_attachment;
+        VkRenderPassCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
+        info.attachmentCount = 1;
+        info.pAttachments = &attachment;
+        info.subpassCount = 1;
+        info.pSubpasses = &subpass;
+        err = vkCreateRenderPass(g_Device, &info, g_Allocator, &g_RenderPass);
+        check_vk_result(err);
+    }
+
+    // Create The Image Views
+    {
+        VkImageViewCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+        info.viewType = VK_IMAGE_VIEW_TYPE_2D;
+        info.format = g_Format;
+        info.components.r = VK_COMPONENT_SWIZZLE_R;
+        info.components.g = VK_COMPONENT_SWIZZLE_G;
+        info.components.b = VK_COMPONENT_SWIZZLE_B;
+        info.components.a = VK_COMPONENT_SWIZZLE_A;
+        info.subresourceRange = g_ImageRange;
+        for (uint32_t i = 0; i<g_BackBufferCount; i++)
+        {
+            info.image = g_BackBuffer[i];
+            err = vkCreateImageView(g_Device, &info, g_Allocator, &g_BackBufferView[i]);
+            check_vk_result(err);
+        }
+    }
+
+    // Create Framebuffer:
+    {
+        VkImageView attachment[1];
+        VkFramebufferCreateInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
+        info.renderPass = g_RenderPass;
+        info.attachmentCount = 1;
+        info.pAttachments = attachment;
+        info.width = fb_width;
+        info.height = fb_height;
+        info.layers = 1;
+        for (uint32_t i = 0; i<g_BackBufferCount; i++)
+        {
+            attachment[0] = g_BackBufferView[i];
+            err = vkCreateFramebuffer(g_Device, &info, g_Allocator, &g_Framebuffer[i]);
+            check_vk_result(err);
+        }
+    }
+}
+
+static void setup_vulkan(GLFWwindow* window)
+{
+    VkResult err;
+
+    // Create Vulkan Instance
+    {
+        uint32_t glfw_extensions_count;
+        const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count);
+        VkInstanceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+        create_info.enabledExtensionCount = glfw_extensions_count;
+        create_info.ppEnabledExtensionNames = glfw_extensions;
+        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+        check_vk_result(err);
+    }
+
+    // Create Window Surface
+    {
+        err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface);
+        check_vk_result(err);
+    }
+    
+    // Get GPU
+    {
+        uint32_t count = 1;
+        err = vkEnumeratePhysicalDevices(g_Instance, &count, &g_Gpu);
+        check_vk_result(err);
+    }
+
+    // Create Logical Device
+    {
+        int device_extension_count = 1;
+        const char* device_extensions[] = {"VK_KHR_swapchain"};
+        const uint32_t queue_index = 0;
+        const uint32_t queue_count = 1;
+        const float queue_priority[] = {1.0f};
+        VkDeviceQueueCreateInfo queue_info[1] = {};
+        queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+        queue_info[0].queueFamilyIndex = g_QueueFamily;
+        queue_info[0].queueCount = queue_count;
+        queue_info[0].pQueuePriorities = queue_priority;
+        VkDeviceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+        create_info.queueCreateInfoCount = sizeof(queue_info)/sizeof(queue_info[0]);
+        create_info.pQueueCreateInfos = queue_info;
+        create_info.enabledExtensionCount = device_extension_count;
+        create_info.ppEnabledExtensionNames = device_extensions;
+        err = vkCreateDevice(g_Gpu, &create_info, g_Allocator, &g_Device);
+        check_vk_result(err);
+        vkGetDeviceQueue(g_Device, g_QueueFamily, queue_index, &g_Queue);
+    }
+
+    // Create Framebuffers
+    {
+        int w, h;
+        glfwGetFramebufferSize(window, &w, &h);
+        resize_vulkan(window, w, h);
+        glfwSetFramebufferSizeCallback(window, resize_vulkan);
+    }
+
+    // Create Command Buffers
+    for (int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++)
+    {
+        {
+            VkCommandPoolCreateInfo info = {};
+            info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
+            info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
+            info.queueFamilyIndex = g_QueueFamily;
+            err = vkCreateCommandPool(g_Device, &info, g_Allocator, &g_CommandPool[i]);
+            check_vk_result(err);
+        }
+        {
+            VkCommandBufferAllocateInfo info = {};
+            info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
+            info.commandPool = g_CommandPool[i];
+            info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
+            info.commandBufferCount = 1;
+            err = vkAllocateCommandBuffers(g_Device, &info, &g_CommandBuffer[i]);
+            check_vk_result(err);
+        }
+        {
+            VkFenceCreateInfo info = {};
+            info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
+            info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
+            err = vkCreateFence(g_Device, &info, g_Allocator, &g_Fence[i]);
+            check_vk_result(err);
+        }
+        {
+            VkSemaphoreCreateInfo info = {};
+            info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
+            err = vkCreateSemaphore(g_Device, &info, g_Allocator, &g_Semaphore[i]);
+            check_vk_result(err);
+        }
+    }
+
+    // Create Descriptor Pool
+    {
+        VkDescriptorPoolSize pool_size[11] = 
+        {
+            { VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
+            { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
+            { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
+            { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
+            { VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
+        };
+        VkDescriptorPoolCreateInfo pool_info = {};
+        pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+        pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+        pool_info.maxSets = 1000 * 11;
+        pool_info.poolSizeCount = 11;
+        pool_info.pPoolSizes = pool_size;
+        err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
+        check_vk_result(err);
+    }
+}
+
+static void cleanup_vulkan()
+{
+    vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
+    for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
+    {
+        vkDestroyFence(g_Device, g_Fence[i], g_Allocator);
+        vkFreeCommandBuffers(g_Device, g_CommandPool[i], 1, &g_CommandBuffer[i]);
+        vkDestroyCommandPool(g_Device, g_CommandPool[i], g_Allocator);
+        vkDestroySemaphore(g_Device, g_Semaphore[i], g_Allocator);
+    }
+    for (uint32_t i = 0; i < g_BackBufferCount; i++)
+    {
+        vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
+        vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
+    }
+    vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
+    vkDestroySwapchainKHR(g_Device, g_Swapchain, g_Allocator);
+    vkDestroySurfaceKHR(g_Instance, g_Surface, g_Allocator);
+    vkDestroyDevice(g_Device, g_Allocator);
+    vkDestroyInstance(g_Instance, g_Allocator);
+}
+
+static void frame_begin()
+{
+    VkResult err;
+    while (true)
+    {
+        err = vkWaitForFences(g_Device, 1, &g_Fence[g_FrameIndex], VK_TRUE, 100);
+        if (err == VK_SUCCESS) break;
+        if (err == VK_TIMEOUT) continue;
+        check_vk_result(err);
+    }
+    {
+        err = vkAcquireNextImageKHR(g_Device, g_Swapchain, UINT64_MAX, g_Semaphore[g_FrameIndex], VK_NULL_HANDLE, &g_BackBufferIndex);
+        check_vk_result(err);
+    }
+    {
+        err = vkResetCommandPool(g_Device, g_CommandPool[g_FrameIndex], 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(g_CommandBuffer[g_FrameIndex], &info);
+        check_vk_result(err);
+    }
+    {
+        VkRenderPassBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        info.renderPass = g_RenderPass;
+        info.framebuffer = g_Framebuffer[g_BackBufferIndex];
+        info.renderArea.extent.width = fb_width;
+        info.renderArea.extent.height = fb_height;
+        info.clearValueCount = 1;
+        info.pClearValues = &g_ClearValue;
+        vkCmdBeginRenderPass(g_CommandBuffer[g_FrameIndex], &info, VK_SUBPASS_CONTENTS_INLINE);
+    }
+}
+
+static void frame_end()
+{
+    VkResult err;
+    vkCmdEndRenderPass(g_CommandBuffer[g_FrameIndex]);
+    {
+        VkImageMemoryBarrier barrier = {};
+        barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
+        barrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
+        barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
+        barrier.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
+        barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
+        barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
+        barrier.image = g_BackBuffer[g_BackBufferIndex];
+        barrier.subresourceRange = g_ImageRange;
+        vkCmdPipelineBarrier(g_CommandBuffer[g_FrameIndex], VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, NULL, 0, NULL, 1, &barrier);
+    }
+    {
+        VkSubmitInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        info.waitSemaphoreCount = 1;
+        info.pWaitSemaphores = &g_Semaphore[g_FrameIndex];
+        info.commandBufferCount = 1;
+        info.pCommandBuffers = &g_CommandBuffer[g_FrameIndex];
+
+        err = vkEndCommandBuffer(g_CommandBuffer[g_FrameIndex]);
+        check_vk_result(err);
+        err = vkResetFences(g_Device, 1, &g_Fence[g_FrameIndex]);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &info, g_Fence[g_FrameIndex]);
+        check_vk_result(err);
+    }
+    {
+        VkResult res;
+        VkSwapchainKHR swapchains[1] = {g_Swapchain};
+        uint32_t indices[1] = {g_BackBufferIndex};
+        VkPresentInfoKHR info = {};
+        info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+        info.swapchainCount = 1;
+        info.pSwapchains = swapchains;
+        info.pImageIndices = indices;
+        info.pResults = &res;
+        err = vkQueuePresentKHR(g_Queue, &info);
+        check_vk_result(err);
+        check_vk_result(res);
+    }
+    g_FrameIndex = (g_FrameIndex) % IMGUI_VK_QUEUED_FRAMES;
+}
+
+static void error_callback(int error, const char* description)
+{
+    fprintf(stderr, "Error %d: %s\n", error, description);
+}
+
+int main(int, char**)
+{
+    // Setup window
+    glfwSetErrorCallback(error_callback);
+    if (!glfwInit())
+        return 1;
+
+    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
+    GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui Vulkan example", NULL, NULL);
+
+    // Setup Vulkan
+    if (!glfwVulkanSupported())
+    {
+        printf("GLFW: Vulkan Not Supported\n");
+        return 1;
+    }
+    setup_vulkan(window);
+
+    // Setup ImGui binding
+    ImGui_ImplGlfwVulkan_Init_Data init_data = {};
+    init_data.allocator = g_Allocator;
+    init_data.gpu = g_Gpu;
+    init_data.device = g_Device;
+    init_data.render_pass = g_RenderPass;
+    init_data.pipeline_cache = g_PipelineCache;
+    init_data.descriptor_pool = g_DescriptorPool;
+    init_data.check_vk_result = check_vk_result;
+    ImGui_ImplGlfwVulkan_Init(window, true, &init_data);
+
+    // Load Fonts
+    // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
+    //ImGuiIO& io = ImGui::GetIO();
+    //io.Fonts->AddFontDefault();
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
+    //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+
+    // Upload Fonts
+    {
+        VkResult err;
+        err = vkResetCommandPool(g_Device, g_CommandPool[g_FrameIndex], 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo begin_info = {};
+        begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(g_CommandBuffer[g_FrameIndex], &begin_info);
+        check_vk_result(err);
+
+        ImGui_ImplGlfwVulkan_CreateFontsTexture(g_CommandBuffer[g_FrameIndex]);
+
+        VkSubmitInfo end_info = {};
+        end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        end_info.commandBufferCount = 1;
+        end_info.pCommandBuffers = &g_CommandBuffer[g_FrameIndex];
+        err = vkEndCommandBuffer(g_CommandBuffer[g_FrameIndex]);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
+        check_vk_result(err);
+
+        err = vkDeviceWaitIdle(g_Device);
+        check_vk_result(err);
+        ImGui_ImplGlfwVulkan_InvalidateFontUploadObjects();
+    }
+
+    bool show_test_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImColor(114, 144, 154);
+
+    // Main loop
+    while (!glfwWindowShouldClose(window))
+    {
+        glfwPollEvents();
+        ImGui_ImplGlfwVulkan_NewFrame();
+
+        // 1. Show a simple window
+        // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
+        {
+            static float f = 0.0f;
+            ImGui::Text("Hello, world!");
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
+            ImGui::ColorEdit3("clear color", (float*)&clear_color);
+            if (ImGui::Button("Test Window")) show_test_window ^= 1;
+            if (ImGui::Button("Another Window")) show_another_window ^= 1;
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+        }
+
+        // 2. Show another simple window, this time using an explicit Begin/End pair
+        if (show_another_window)
+        {
+            ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
+            ImGui::Begin("Another Window", &show_another_window);
+            ImGui::Text("Hello");
+            ImGui::End();
+        }
+
+        // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
+        if (show_test_window)
+        {
+            ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
+            ImGui::ShowTestWindow(&show_test_window);
+        }
+
+        g_ClearValue.color.float32[0] = clear_color.x;
+        g_ClearValue.color.float32[1] = clear_color.y;
+        g_ClearValue.color.float32[2] = clear_color.z;
+        g_ClearValue.color.float32[3] = clear_color.w;
+
+        frame_begin();
+        ImGui_ImplGlfwVulkan_Render(g_CommandBuffer[g_FrameIndex]);
+        frame_end();
+    }
+
+    // Cleanup
+    VkResult err = vkDeviceWaitIdle(g_Device);
+    check_vk_result(err);
+    ImGui_ImplGlfwVulkan_Shutdown();
+    cleanup_vulkan();
+    glfwTerminate();
+
+    return 0;
+}