Version 1.76

+ fixed PVS warning, update demo binaries, update readme image
Internals: FocusScope not inherited by popups, modals. Amend a5041c88 2ebe08be)
2025-07-13 00:09:55 +02:00 · 2020-04-12 20:18:47 +02:00 · 2020-04-12 18:58:06 +02:00 · 2020-04-12 18:01:10 +02:00 · 2020-04-12 09:55:56 +02:00 · 2020-04-10 11:51:17 +02:00
205 changed files with 60202 additions and 18094 deletions
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,22 @@
 # See http://editorconfig.org to read about the EditorConfig format.
 # - Automatically supported by VS2017+ and most common IDE or text editors.
 # - For older VS2010 to VS2015, install https://marketplace.visualstudio.com/items?itemName=EditorConfigTeam.EditorConfig
 # top-most EditorConfig file
 root = true
 # Default settings:
 # Use 4 spaces as indentation
 [*]
 indent_style = space
 indent_size = 4
 insert_final_newline = true
 trim_trailing_whitespace = true
 [imstb_*]
 indent_size = 3
 trim_trailing_whitespace = false
 [Makefile]
 indent_style = tab
 indent_size = 4
--- a/.gitattributes
+++ b/.gitattributes
@ -0,0 +1,30 @@
 * text=auto
 *.c text
 *.cpp text
 *.h text
 *.m text
 *.mm text
 *.md text
 *.txt text
 *.html text
 *.bat text
 *.frag text
 *.vert text
 *.mkb text
 *.icf text
 *.sln text eol=crlf
 *.vcxproj text eol=crlf
 *.vcxproj.filters text eol=crlf
 *.natvis text eol=crlf
 Makefile text eol=lf
 *.sh text eol=lf
 *.pbxproj text eol=lf
 *.storyboard text eol=lf
 *.plist text eol=lf
 *.png binary
 *.ttf binary
 *.lib binary
--- a/.github/issue_template.md
+++ b/.github/issue_template.md
@ -0,0 +1,46 @@
 (Click "Preview" above ^ to turn URL into clickable links)
 1. PLEASE CAREFULLY READ: [FAQ](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md)
 2. PLEASE CAREFULLY READ: [Issue Submitting Guidelines](https://github.com/ocornut/imgui/issues/2261)
 3. FOR FIRST-TIME USERS ISSUES COMPILING/LINKING/RUNNING/LOADING FONTS,  please use the [Discord server](http://discord.dearimgui.org).
 4. PLEASE MAKE SURE that you have: read the FAQ; explored the contents of `ShowDemoWindow()` including the Examples menu; searched among Issues; used your IDE to search for keywords in all sources and text files; and read the link provided in (1) (2).
 5. Be mindful that messages are being sent to the e-mail box of "Watching" users. Try to proof-read your messages before sending them. Edits are not seen by those users.
 6. Delete points 1-6 and PLEASE FILL THE TEMPLATE BELOW before submitting your issue.
 Thank you!
 ----
 _(you may also go to Demo>About Window, and click "Config/Build Information" to obtain a bunch of detailed information that you can paste here)_
 **Version/Branch of Dear ImGui:**
 Version: XXX
 Branch: XXX _(master/viewport/docking/etc.)_
 **Back-end/Renderer/Compiler/OS**
 Back-ends: imgui_impl_XXX.cpp + imgui_impl_XXX.cpp _(or specify if using a custom engine/back-end)_
 Compiler: XXX _(if the question is related to building or platform specific features)_
 Operating System: XXX
 **My Issue/Question:**
 XXX _(please provide as much context as possible)_
 **Screenshots/Video**
 XXX _(you can drag files here)_
 **Standalone, minimal, complete and verifiable example:** _(see https://github.com/ocornut/imgui/issues/2261)_
 ```
 // Here's some code anyone can copy and paste to reproduce your issue
 ImGui::Begin("Example Bug");
 MoreCodeToExplainMyIssue();
 ImGui::End();
 ```
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@ -0,0 +1,6 @@
 (Click "Preview" to turn any http URL into a clickable link)
 PLEASE CAREFULLY READ:
 https://github.com/ocornut/imgui/issues/2261
 (Clear this template before submitting your PR)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@ -0,0 +1,363 @@
 name: build
 on:
  push: {}
  pull_request: {}
  schedule:
    - cron:  '0 9 * * *'
 jobs:
  Windows:
    runs-on: windows-2019
    env:
      VS_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\
      MSBUILD_PATH: C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\
      # Until gh-actions allow us to use env variables inside other env variables (because we need %GITHUB_WORKSPACE%) we have to use relative path to imgui/examples/example_name directory.
      SDL2_DIR: ..\..\SDL2-devel-2.0.10-VC\SDL2-2.0.10\
      VULKAN_SDK: ..\..\vulkan-sdk-1.1.121.2\
    steps:
      - uses: actions/checkout@v1
        with:
          fetch-depth: 1
      - name: Install Dependencies
        shell: powershell
        run: |
          Invoke-WebRequest -Uri "https://www.libsdl.org/release/SDL2-devel-2.0.10-VC.zip" -OutFile "SDL2-devel-2.0.10-VC.zip"
          Expand-Archive -Path SDL2-devel-2.0.10-VC.zip
          Invoke-WebRequest -Uri "https://github.com/ocornut/imgui/files/3789205/vulkan-sdk-1.1.121.2.zip" -OutFile vulkan-sdk-1.1.121.2.zip
          Expand-Archive -Path vulkan-sdk-1.1.121.2.zip
      - name: Fix Projects
        shell: powershell
        run: |
          # WARNING: This will need updating if toolset/sdk change in project files!
          gci -recurse -filter "*.vcxproj" | ForEach-Object {
            # Fix SDK and toolset for most samples.
            (Get-Content $_.FullName) -Replace "<PlatformToolset>v110</PlatformToolset>","<PlatformToolset>v142</PlatformToolset>" | Set-Content -Path $_.FullName
            (Get-Content $_.FullName) -Replace "<WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>","<WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>" | Set-Content -Path $_.FullName
            # Fix SDK and toolset for samples that require newer SDK/toolset. At the moment it is only dx12.
            (Get-Content $_.FullName) -Replace "<PlatformToolset>v140</PlatformToolset>","<PlatformToolset>v142</PlatformToolset>" | Set-Content -Path $_.FullName
            (Get-Content $_.FullName) -Replace "<WindowsTargetPlatformVersion>10.0.14393.0</WindowsTargetPlatformVersion>","<WindowsTargetPlatformVersion>10.0.18362.0</WindowsTargetPlatformVersion>" | Set-Content -Path $_.FullName
          }
      # Not using matrix here because it would inflate job count too much. Check out and setup is done for every job and that makes build times way too long.
      - name: Build example_null (extra warnings, mingw 64-bit)
        run: mingw32-make -C examples/example_null WITH_EXTRA_WARNINGS=1
      - name: Build example_null (extra warnings, msvc 64-bit)
        shell: cmd
        run: |
          cd examples\example_null
          "%VS_PATH%\VC\Auxiliary\Build\vcvarsall.bat" x64 && .\build_win32.bat /W4
      - name: Build example_null (single file build)
        shell: bash
        run: |
          echo '#define IMGUI_IMPLEMENTATION'                    >  example_single_file.cpp
          echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
          echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
          g++ -I. -Wall -Wformat -o example_single_file.exe example_single_file.cpp
      - name: Build Win32 example_glfw_opengl2
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj /p:Platform=Win32 /p:Configuration=Release'
      - name: Build Win32 example_glfw_opengl3
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj /p:Platform=Win32 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build Win32 example_glfw_vulkan
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build Win32 example_sdl_vulkan
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj /p:Platform=Win32 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build Win32 example_sdl_opengl2
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj /p:Platform=Win32 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build Win32 example_sdl_opengl3
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj /p:Platform=Win32 /p:Configuration=Release'
      - name: Build Win32 example_sdl_directx11
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_directx11/example_sdl_directx11.vcxproj /p:Platform=Win32 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build Win32 example_win32_directx9
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx9/example_win32_directx9.vcxproj /p:Platform=Win32 /p:Configuration=Release'
      - name: Build Win32 example_win32_directx10
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx10/example_win32_directx10.vcxproj /p:Platform=Win32 /p:Configuration=Release'
      - name: Build Win32 example_win32_directx11
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx11/example_win32_directx11.vcxproj /p:Platform=Win32 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_glfw_opengl2
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_glfw_opengl3
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj /p:Platform=x64 /p:Configuration=Release'
      - name: Build x64 example_glfw_vulkan
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
      - name: Build x64 example_sdl_vulkan
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_sdl_opengl2
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_sdl_opengl3
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_sdl_directx11
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl_directx11/example_sdl_directx11.vcxproj /p:Platform=x64 /p:Configuration=Release'
      - name: Build x64 example_win32_directx9
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx9/example_win32_directx9.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_win32_directx10
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx10/example_win32_directx10.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_win32_directx11
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx11/example_win32_directx11.vcxproj /p:Platform=x64 /p:Configuration=Release'
        if: github.event_name == 'schedule'
      - name: Build x64 example_win32_directx12
        shell: cmd
        run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_win32_directx12/example_win32_directx12.vcxproj /p:Platform=x64 /p:Configuration=Release'
  Linux:
    runs-on: ubuntu-18.04
    steps:
    - uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y libglfw3-dev libsdl2-dev gcc-multilib g++-multilib libfreetype6-dev
    - name: Build example_null (extra warnings, gcc 32-bit)
      run: |
        make -C examples/example_null clean
        CXXFLAGS="$CXXFLAGS -m32 -Werror" make -C examples/example_null WITH_EXTRA_WARNINGS=1
    - name: Build example_null (extra warnings, gcc 64-bit)
      run: |
        make -C examples/example_null clean
        CXXFLAGS="$CXXFLAGS -m64 -Werror" make -C examples/example_null WITH_EXTRA_WARNINGS=1
    - name: Build example_null (extra warnings, clang 32-bit)
      run: |
        make -C examples/example_null clean
        CXXFLAGS="$CXXFLAGS -m32 -Werror" CXX=clang++ make -C examples/example_null WITH_EXTRA_WARNINGS=1
    - name: Build example_null (extra warnings, clang 64-bit)
      run: |
        make -C examples/example_null clean
        CXXFLAGS="$CXXFLAGS -m64 -Werror" CXX=clang++ make -C examples/example_null WITH_EXTRA_WARNINGS=1
    - name: Build example_null (freetype)
      run: |
        make -C examples/example_null clean
        make -C examples/example_null WITH_FREETYPE=1
    - name: Build example_null (single file build)
      run: |
        echo '#define IMGUI_IMPLEMENTATION'                    >  example_single_file.cpp
        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
        g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
    - name: Build example_null (with ImWchar32)
      run: |
        echo '#define IMGUI_USE_WCHAR32'                       >  example_single_file.cpp
        echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
        g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
    - name: Build example_null (with large ImDrawIdx)
      run: |
        echo '#define ImDrawIdx unsigned int'                  >  example_single_file.cpp
        echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
        g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
    - name: Build example_null (with IMGUI_DISABLE_OBSOLETE_FUNCTIONS)
      run: |
        echo '#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS'        >  example_single_file.cpp
        echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
        g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
    - name: Build example_null (with IMGUI_DISABLE_DEMO_WINDOWS and IMGUI_DISABLE_METRICS_WINDOW)
      run: |
        echo '#define IMGUI_DISABLE_DEMO_WINDOWS'              >  example_single_file.cpp
        echo '#define IMGUI_DISABLE_METRICS_WINDOW'            >> example_single_file.cpp
        echo '#define IMGUI_IMPLEMENTATION'                    >> example_single_file.cpp
        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
        g++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
    - name: Build example_glfw_opengl2
      run: make -C examples/example_glfw_opengl2
    - name: Build example_glfw_opengl3
      run: make -C examples/example_glfw_opengl3
      if: github.event_name == 'schedule'
    - name: Build example_sdl_opengl2
      run: make -C examples/example_sdl_opengl2
      if: github.event_name == 'schedule'
    - name: Build example_sdl_opengl3
      run: make -C examples/example_sdl_opengl3
  MacOS:
    runs-on: macOS-latest
    steps:
    - uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Dependencies
      run: |
        brew install glfw3
        brew install sdl2
    - name: Build example_null (extra warnings, clang 64-bit)
      run: make -C examples/example_null WITH_EXTRA_WARNINGS=1
    - name: Build example_null (single file build)
      run: |
        echo '#define IMGUI_IMPLEMENTATION'                    >  example_single_file.cpp
        echo '#include "misc/single_file/imgui_single_file.h"' >> example_single_file.cpp
        echo '#include "examples/example_null/main.cpp"'       >> example_single_file.cpp
        clang++ -I. -Wall -Wformat -o example_single_file example_single_file.cpp
    - name: Build example_glfw_opengl2
      run: make -C examples/example_glfw_opengl2
    - name: Build example_glfw_opengl3
      run: make -C examples/example_glfw_opengl3
      if: github.event_name == 'schedule'
    - name: Build example_glfw_metal
      run: make -C examples/example_glfw_metal
    - name: Build example_sdl_metal
      run: make -C examples/example_sdl_metal
    - name: Build example_sdl_opengl2
      run: make -C examples/example_sdl_opengl2
      if: github.event_name == 'schedule'
    - name: Build example_sdl_opengl3
      run: make -C examples/example_sdl_opengl3
    - name: Build example_apple_metal
      run: xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_macos
    - name: Build example_apple_opengl2
      run: xcodebuild -project examples/example_apple_opengl2/example_apple_opengl2.xcodeproj -target example_osx_opengl2
  iOS:
    runs-on: macOS-latest
    steps:
    - uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Build example_apple_metal
      run: |
        # Code signing is required, but we disable it because it is irrelevant for CI builds.
        xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_ios CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO
  Emscripten:
    runs-on: ubuntu-18.04
    steps:
    - uses: actions/checkout@v1
      with:
        fetch-depth: 1
    - name: Install Dependencies
      run: |
        wget -q https://github.com/emscripten-core/emsdk/archive/master.tar.gz
        tar -xvf master.tar.gz
        emsdk-master/emsdk update
        emsdk-master/emsdk install latest-fastcomp
        emsdk-master/emsdk activate latest-fastcomp
    - name: Build example_emscripten
      run: |
        source emsdk-master/emsdk_env.sh
        make -C examples/example_emscripten
  Static-Analysis:
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v1
        with:
          fetch-depth: 1
      - name: Install Dependencies
        env:
          PVS_STUDIO_LICENSE: ${{ secrets.PVS_STUDIO_LICENSE }}
        run: |
          if [[ "$PVS_STUDIO_LICENSE" != "" ]];
          then
            echo "$PVS_STUDIO_LICENSE" > pvs-studio.lic
            wget -q https://files.viva64.com/etc/pubkey.txt
            sudo apt-key add pubkey.txt
            sudo wget -O /etc/apt/sources.list.d/viva64.list https://files.viva64.com/etc/viva64.list
            sudo apt-get update
            sudo apt-get install -y pvs-studio
          fi
      - name: PVS-Studio static analysis
        run: |
          if [[ ! -f pvs-studio.lic ]];
          then
            echo "PVS Studio license is missing. No analysis will be performed."
            echo "If you have a PVS Studio license please create a project secret named PVS_STUDIO_LICENSE with your license."
            echo "You may use a free license. More information at https://www.viva64.com/en/b/0457/"
            exit 0
          fi
          cd examples/example_null
          pvs-studio-analyzer trace -- make WITH_EXTRA_WARNINGS=1
          pvs-studio-analyzer analyze -e ../../imstb_rectpack.h -e ../../imstb_textedit.h -e ../../imstb_truetype.h -l ../../pvs-studio.lic -o pvs-studio.log
          plog-converter -a 'GA:1,2;OP:1' -t errorfile -w pvs-studio.log
--- a/.gitignore
+++ b/.gitignore
@ -1 +1,49 @@
 ## OSX artifacts
 .DS_Store
 ## Dear ImGui artifacts
 imgui.ini
 ## General build artifacts
 *.o
 *.obj
 *.exe
 examples/build/*
 examples/*/Debug/*
 examples/*/Release/*
 examples/*/x64/*
 ## Visual Studio artifacts
 .vs
 ipch
 *.opensdf
 *.log
 *.pdb
 *.ilk
 *.user
 *.sdf
 *.suo
 *.VC.db
 *.VC.VC.opendb
 ## Xcode artifacts
 project.xcworkspace
 xcuserdata
 ## Emscripten artifacts
 examples/*.o.tmp
 examples/*.out.js
 examples/*.out.wasm
 examples/example_emscripten/example_emscripten.*
 ## JetBrains IDE artifacts
 .idea
 cmake-build-*
 ## Unix executables from our example Makefiles
 examples/example_glfw_opengl2/example_glfw_opengl2
 examples/example_glfw_opengl3/example_glfw_opengl3
 examples/example_glut_opengl2/example_glut_opengl2
 examples/example_null/example_null
 examples/example_sdl_opengl2/example_sdl_opengl2
 examples/example_sdl_opengl3/example_sdl_opengl3
--- a/.travis.yml
+++ b/.travis.yml
@ -1,17 +0,0 @@
 language: cpp
 os:
  - linux
 compiler:
  - gcc
  - clang
 before_install:
  - if [ $TRAVIS_OS_NAME == linux ]; then sudo add-apt-repository -y ppa:pyglfw/pyglfw && sudo apt-get update -qq && sudo apt-get install -y --no-install-recommends libglfw3-dev libxrandr-dev libxi-dev libxxf86vm-dev; fi
  - if [ $TRAVIS_OS_NAME == osx ]; then brew update && brew install glfw3; fi
 script: 
  - make -C examples/opengl_example
  - make -C examples/opengl3_example
--- a/LICENSE.txt
+++ b/LICENSE.txt
@ -1,6 +1,6 @@
 The MIT License (MIT)
-Copyright (c) 2014-2015 Omar Cornut and ImGui contributors
+Copyright (c) 2014-2020 Omar Cornut
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/README.md
+++ b/README.md
@ -1,148 +0,0 @@
 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)
 [![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.
 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 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 self-contained within 6 files that you can easily copy and compile into your application/engine:
  - imgui.cpp
  - imgui.h
  - imconfig.h (empty by default, user-editable)
  - stb_rect_pack.h
  - stb_textedit.h
  - stb_truetype.h
 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)
 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 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. 
 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)
 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](https://cloud.githubusercontent.com/assets/8225057/7903336/96f0fb7c-07d0-11e5-95d6-41c6a1595e5a.png)
 ![screenshot 8](/web/examples_02.png?raw=true)
 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.ImeWindowHandle = my_hwnd;
 ```
 ![Japanese screenshot](/web/code_sample_01_jp.png?raw=true)
 References
 ----------
 The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works. 
 - [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
 - [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
 - [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
 - [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
 Frequently Asked Question
 -------------------------
 <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. 
 <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).
 <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. 
 <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.
 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)
 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.
 <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. 
 <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.
 Donate
 ------
 <b>Can I donate to support the development of ImGui?</b>
 [![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!
 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). 
 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).
 Special supporters:
 - Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Stefano Cristiano.
 And:
 - Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly.
 And other supporters; thanks!
 License
 -------
 ImGui is licensed under the MIT License, see LICENSE for more information.
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
--- a/docs/FAQ.md
+++ b/docs/FAQ.md
@ -0,0 +1,609 @@
 # FAQ (Frequenty Asked Questions)
 You may link to this document using short form:
  https://www.dearimgui.org/faq
 or its real address:
  https://github.com/ocornut/imgui/blob/master/docs/FAQ.md
 or view this file with any Markdown viewer.
 ## Index
 | **Q&A: Basics** |
 :---------------------------------------------------------- |
 | [Where is the documentation?](#q-where-is-the-documentation) |
 | [What is this library called?](#q-what-is-this-library-called) |
 | [Which version should I get?](#q-which-version-should-i-get) |
 | **Q&A: Integration** |
 | **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-to-my-application)** |
 | [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls) |
 | [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display) |
 | [I integrated Dear ImGui in my engine and the text or lines are blurry..](#q-i-integrated-dear-imgui-in-my-engine-and-the-text-or-lines-are-blurry) |
 | [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
 | **Q&A: Usage** |
 | **[Why are multiple widgets reacting when I interact with a single one?<br>How can I have multiple widgets with the same label or with an empty label?](#q-why-are-multiple-widgets-reacting-when-i-interact-with-a-single-one-q-how-can-i-have-multiple-widgets-with-the-same-label-or-with-an-empty-label)** |
 | [How can I display an image? What is ImTextureID, how does it work?](#q-how-can-i-display-an-image-what-is-imtextureid-how-does-it-work)|
 | [How can I use my own math types instead of ImVec2/ImVec4?](#q-how-can-i-use-my-own-math-types-instead-of-imvec2imvec4) |
 | [How can I interact with standard C++ types (such as std::string and std::vector)?](#q-how-can-i-interact-with-standard-c-types-such-as-stdstring-and-stdvector) |
 | [How can I display custom shapes? (using low-level ImDrawList API)](#q-how-can-i-display-custom-shapes-using-low-level-imdrawlist-api) |
 | **Q&A: Fonts, Text** |
 | [How can I load a different font than the default?](#q-how-can-i-load-a-different-font-than-the-default) |
 | [How can I easily use icons in my application?](#q-how-can-i-easily-use-icons-in-my-application) |
 | [How can I load multiple fonts?](#q-how-can-i-load-multiple-fonts) |
 | [How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?](#q-how-can-i-display-and-input-non-latin-characters-such-as-chinese-japanese-korean-cyrillic) |
 | **Q&A: Concerns** |
 | [Who uses Dear ImGui?](#q-who-uses-dear-imgui) |
 | [Can you create elaborate/serious tools with Dear ImGui?](#q-can-you-create-elaborateserious-tools-with-dear-imgui)  |
 | [Can you reskin the look of Dear ImGui?](#q-can-you-reskin-the-look-of-dear-imgui) |
 | [Why using C++ (as opposed to C)?](#q-why-using-c-as-opposed-to-c) |
 | **Q&A: Community** |
 | [How can I help?](#q-how-can-i-help) |
 # Q&A: Basics
 ### Q: Where is the documentation?
 **This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.**
 - Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the [examples/](https://github.com/ocornut/imgui/blob/master/examples/) folder to explain how to integrate Dear ImGui with your own engine/application. You can run those applications and explore them.
 - See demo code in [imgui_demo.cpp](https://github.com/ocornut/imgui/blob/master/imgui_demo.cpp) and particularly the `ImGui::ShowDemoWindow()` function. The demo covers most features of Dear ImGui, so you can read the code and see its output.
 - See documentation and comments at the top of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) + general API comments in [imgui.h](https://github.com/ocornut/imgui/blob/master/imgui.h).
 - The [Wiki](https://github.com/ocornut/imgui/wiki) has many resources and links.
 - The [Glossary](https://github.com/ocornut/imgui/wiki/Glossary) page may be useful.
 - The [Issues](https://github.com/ocornut/imgui/issues) section can be searched for past questions and issues.
 - Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
 - The `ImGui::ShowMetricsWindow()` function exposes lots of internal information and tools. Although it is primary designed as a debugging tool, having access to that information tends to help understands concepts.
 ##### [Return to Index](#index)
 ---
 ### Q. What is this library called?
 **This library is called Dear ImGui**. Please refer to it as Dear ImGui (not ImGui, not IMGUI).
 (The library misleadingly started its life in 2014 as "ImGui" due to the fact that I didn't give it a proper name when when I released 1.0, and had no particular expectation that it would take off. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations e.g. Unity uses it own implementation of the IMGUI paradigm. To reduce the ambiguity without affecting existing code bases, I have decided in December 2015 a fully qualified name "Dear ImGui" for this library.
 ##### [Return to Index](#index)
 ---
 ### Q: Which version should I get?
 I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
 You may use the [docking](https://github.com/ocornut/imgui/tree/docking) branch which includes:
 - [Docking features](https://github.com/ocornut/imgui/issues/2109)
 - [Multi-viewport features](https://github.com/ocornut/imgui/issues/1542)
 Many projects are using this branch and it is kept in sync with master regularly.
 ##### [Return to Index](#index)
 ----
 # Q&A: Integration
 ### Q: How can I tell whether to dispatch mouse/keyboard to Dear ImGui or to my application?
 You can read the `io.WantCaptureMouse`, `io.WantCaptureKeyboard` and `io.WantTextInput` flags from the ImGuiIO structure.
 e.g. `if (ImGui::GetIO().WantCaptureMouse) { ... }`
 - When `io.WantCaptureMouse` is set, imgui wants to use your mouse state, and you may want to discard/hide the inputs from the rest of your application.
 - When `io.WantCaptureKeyboard` is set, imgui wants to use your keyboard state, and you may want to discard/hide the inputs from the rest of your application.
 - When `io.WantTextInput` is set to may want to notify your OS to popup an on-screen keyboard, if available (e.g. on a mobile phone, or console OS).
 **Note:** You should always pass your mouse/keyboard inputs to Dear ImGui, even when the io.WantCaptureXXX flag are set false.
 This is because imgui needs to detect that you clicked in the void to unfocus its own windows.
 **Note:** The `io.WantCaptureMouse` is more correct that any manual attempt to "check if the mouse is hovering a window" (don't do that!). It handle mouse dragging correctly (both dragging that started over your application or over a Dear ImGui window) and handle e.g. popup and modal windows blocking inputs. 
 **Note:** Those flags are updated by `ImGui::NewFrame()`. However it is generally more correct and easier that you poll flags from the previous frame, then submit your inputs, then call `NewFrame()`. If you attempt to do the opposite (which is generally harder) you are likely going to submit your inputs after `NewFrame()`, and therefore too late. 
 **Note:** If you are using a touch device, you may find use for an early call to `UpdateHoveredWindowAndCaptureFlags()` to correctly dispatch your initial touch. We will work on better out-of-the-box touch support in the future. 
 **Note:** Text input widget releases focus on the "KeyDown" event of the Return key, so the subsequent "KeyUp" event that your application receive will typically have `io.WantCaptureKeyboard == false`. Depending on your application logic it may or not be inconvenient to receive that KeyUp event. You might want to track which key-downs were targeted for Dear ImGui, e.g. with an array of bool, and filter out the corresponding key-ups.)
 ##### [Return to Index](#index)
 ---
 ### Q: How can I enable keyboard or gamepad controls?
 - The gamepad/keyboard navigation is fairly functional and keeps being improved. The initial focus was to support game controllers, but keyboard is becoming increasingly and decently usable. Gamepad support is particularly useful to use Dear ImGui on a game console (e.g. PS4, Switch, XB1) without a mouse connected!
 - Keyboard: set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard` to enable.
 - Gamepad: set `io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad` to enable (with a supporting back-end).
 - See [Control Sheets for Gamepads](http://www.dearimgui.org/controls_sheets) (reference PNG/PSD for for PS4, XB1, Switch gamepads).
 - See `USING GAMEPAD/KEYBOARD NAVIGATION CONTROLS` section of [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) for more details.
 ##### [Return to Index](#index)
 ---
 ### Q: How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)
 - You can share your computer mouse seamlessly with your console/tablet/phone using solutions such as [Synergy](https://symless.com/synergy)
 This is the preferred solution for developer productivity.
 In particular, the [micro-synergy-client repository](https://github.com/symless/micro-synergy-client) has simple
 and portable source code (uSynergy.c/.h) for a small embeddable client that you can use on any platform to connect
 to your host computer, based on the Synergy 1.x protocol. Make sure you download the Synergy 1 server on your computer.
 Console SDK also sometimes provide equivalent tooling or wrapper for Synergy-like protocols.
 - Game console users: consider emulating a mouse cursor with DualShock4 touch pad or a spare analog stick as a mouse-emulation fallback.
 - You may also use a third party solution such as [Remote ImGui](https://github.com/JordiRos/remoteimgui) or [imgui-ws](https://github.com/ggerganov/imgui-ws) which sends the vertices to render over the local network, allowing you to use Dear ImGui even on a screen-less machine. See [Wiki](https://github.com/ocornut/imgui/wiki) index for most details.
 - For touch inputs, you can increase the hit box of widgets (via the `style.TouchPadding` setting) to accommodate for the lack of precision of touch inputs, but it is recommended you use a mouse or gamepad to allow optimizing for screen real-estate and precision.
 ##### [Return to Index](#index)
 ---
 ### Q: I integrated Dear ImGui in my engine and the text or lines are blurry..
 In your Render function, try translating your projection matrix by (0.5f,0.5f) or (0.375f,0.375f).
 Also make sure your orthographic projection matrix and io.DisplaySize matches your actual framebuffer dimension.
 ##### [Return to Index](#index)
 ---
 ### Q: I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around..
 You are probably mishandling the clipping rectangles in your render function.
 Rectangles provided by ImGui are defined as
 `(x1=left,y1=top,x2=right,y2=bottom)`
 and **NOT** as
 `(x1,y1,width,height)`
 ##### [Return to Index](#index)
 ---
 # Q&A: Usage
 ### Q: Why are multiple widgets reacting when I interact with a single one? <br>Q: How can I have multiple widgets with the same label or with an empty label?
 A primer on labels and the ID Stack...
 Dear ImGui internally need to uniquely identify UI elements.
 Elements that are typically not clickable (such as calls to the Text functions) don't need an ID.
 Interactive widgets (such as calls to Button buttons) need a unique ID.
 Unique ID are used internally to track active widgets and occasionally associate state to widgets.
 Unique ID are implicitly built from the hash of multiple elements that identify the "path" to the UI element.
 - Unique ID are often derived from a string label and at minimum scoped within their host window:
 ```c
 Begin("MyWindow");
 Button("OK");          // Label = "OK",     ID = hash of ("MyWindow" "OK")
 Button("Cancel");      // Label = "Cancel", ID = hash of ("MyWindow", "Cancel")
 End();
 ```
 - Other elements such as tree nodes, etc. also pushes to the ID stack:
 ```c
 Begin("MyWindow");
 if (TreeNode("MyTreeNode"))
 {
    Button("OK");      // Label = "OK",     ID = hash of ("MyWindow", "MyTreeNode", "OK")
    TreePop();
 }
 End();
 ```
 - Two items labeled "OK" in different windows or different tree locations won't collide:
 ```
 Begin("MyFirstWindow");
 Button("OK");          // Label = "OK",     ID = hash of ("MyFirstWindow", "OK")
 End();
 Begin("MyOtherWindow");
 Button("OK");          // Label = "OK",     ID = hash of ("MyOtherWindow", "OK")
 End();
 ```
 We used "..." above to signify whatever was already pushed to the ID stack previously:
 - If you have a same ID twice in the same location, you'll have a conflict:
 ```c
 Button("OK");
 Button("OK");          // ID collision! Interacting with either button will trigger the first one.
 ```
 Fear not! this is easy to solve and there are many ways to solve it!
 - Solving ID conflict in a simple/local context:
 When passing a label you can optionally specify extra ID information within string itself.
 Use "##" to pass a complement to the ID that won't be visible to the end-user.
 This helps solving the simple collision cases when you know e.g. at compilation time which items
 are going to be created:
 ```c
 Begin("MyWindow");
 Button("Play");        // Label = "Play",   ID = hash of ("MyWindow", "Play")
 Button("Play##foo1");  // Label = "Play",   ID = hash of ("MyWindow", "Play##foo1")  // Different from above
 Button("Play##foo2");  // Label = "Play",   ID = hash of ("MyWindow", "Play##foo2")  // Different from above
 End();
 ```
 - If you want to completely hide the label, but still need an ID:
 ```c
 Checkbox("##On", &b);  // Label = "",       ID = hash of (..., "##On")   // No visible label, just a checkbox!
 ```
 - Occasionally/rarely you might want change a label while preserving a constant ID. This allows
 you to animate labels. For example you may want to include varying information in a window title bar,
 but windows are uniquely identified by their ID. Use "###" to pass a label that isn't part of ID:
 ```c
 Button("Hello###ID");  // Label = "Hello",  ID = hash of (..., "###ID")
 Button("World###ID");  // Label = "World",  ID = hash of (..., "###ID")  // Same as above, even if the label looks different
 sprintf(buf, "My game (%f FPS)###MyGame", fps);
 Begin(buf);            // Variable title,   ID = hash of "MyGame"
 ```
 - Solving ID conflict in a more general manner:
 Use PushID() / PopID() to create scopes and manipulate the ID stack, as to avoid ID conflicts
 within the same window. This is the most convenient way of distinguishing ID when iterating and
 creating many UI elements programmatically.
 You can push a pointer, a string or an integer value into the ID stack.
 Remember that ID are formed from the concatenation of _everything_ pushed into the ID stack.
 At each level of the stack we store the seed used for items at this level of the ID stack.
 ```c
 Begin("Window");
 for (int i = 0; i < 100; i++)
 {
  PushID(i);           // Push i to the id tack
  Button("Click");     // Label = "Click",  ID = hash of ("Window", i, "Click")
  PopID();
 }
 for (int i = 0; i < 100; i++)
 {
  MyObject* obj = Objects[i];
  PushID(obj);
  Button("Click");     // Label = "Click",  ID = hash of ("Window", obj pointer, "Click")
  PopID();
 }
 for (int i = 0; i < 100; i++)
 {
  MyObject* obj = Objects[i];
  PushID(obj->Name);
  Button("Click");     // Label = "Click",  ID = hash of ("Window", obj->Name, "Click")
  PopID();
 }
 End();
 ```
 - You can stack multiple prefixes into the ID stack:
 ```c
 Button("Click");       // Label = "Click",  ID = hash of (..., "Click")
 PushID("node");
  Button("Click");     // Label = "Click",  ID = hash of (..., "node", "Click")
  PushID(my_ptr);
    Button("Click");   // Label = "Click",  ID = hash of (..., "node", my_ptr, "Click")
  PopID();
 PopID();
 ```
 - Tree nodes implicitly creates a scope for you by calling PushID().
 ```c
 Button("Click");       // Label = "Click",  ID = hash of (..., "Click")
 if (TreeNode("node"))  // <-- this function call will do a PushID() for you (unless instructed not to, with a special flag)
 {
  Button("Click");     // Label = "Click",  ID = hash of (..., "node", "Click")
  TreePop();
 }
 ```
 - When working with trees, ID are used to preserve the open/close state of each tree node.
 Depending on your use cases you may want to use strings, indices or pointers as ID.
 e.g. when following a single pointer that may change over time, using a static string as ID
 will preserve your node open/closed state when the targeted object change.
 e.g. when displaying a list of objects, using indices or pointers as ID will preserve the
 node open/closed state differently. See what makes more sense in your situation!
 ##### [Return to Index](#index)
 ---
 ### Q: How can I display an image? What is ImTextureID, how does it work?
 Short explanation:
 - Refer to [Image Loading and Displaying Examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples) on the [Wiki](https://github.com/ocornut/imgui/wiki).
 - You may use functions such as `ImGui::Image()`, `ImGui::ImageButton()` or lower-level `ImDrawList::AddImage()` to emit draw calls that will use your own textures.
 - Actual textures are identified in a way that is up to the user/engine. Those identifiers are stored and passed as ImTextureID (void*) value.
 - Loading image files from the disk and turning them into a texture is not within the scope of Dear ImGui (for a good reason).
 **Please read documentations or tutorials on your graphics API to understand how to display textures on the screen before moving onward.**
 Long explanation:
 - Dear ImGui's job is to create "meshes", defined in a renderer-agnostic format made of draw commands and vertices. At the end of the frame those meshes (ImDrawList) will be displayed by your rendering function. They are made up of textured polygons and the code to render them is generally fairly short (a few dozen lines). In the examples/ folder we provide functions for popular graphics API (OpenGL, DirectX, etc.).
 - Each rendering function decides on a data type to represent "textures". The concept of what is a "texture" is entirely tied to your underlying engine/graphics API.
 We carry the information to identify a "texture" in the ImTextureID type.
 ImTextureID is nothing more that a void*, aka 4/8 bytes worth of data: just enough to store 1 pointer or 1 integer of your choice.
 Dear ImGui doesn't know or understand what you are storing in ImTextureID, it merely pass ImTextureID values until they reach your rendering function.
 - In the [examples/](https://github.com/ocornut/imgui/tree/master/examples) bindings, for each graphics API binding we decided on a type that is likely to be a good representation for specifying an image from the end-user perspective. This is what the _examples_ rendering functions are using:
 ```
 OpenGL:
 - ImTextureID = GLuint
 - See ImGui_ImplOpenGL3_RenderDrawData() function in imgui_impl_opengl3.cpp
 ```
 ```
 DirectX9:
 - ImTextureID = LPDIRECT3DTEXTURE9
 - See ImGui_ImplDX9_RenderDrawData() function in imgui_impl_dx9.cpp
 ```
 ```
 DirectX11:
 - ImTextureID = ID3D11ShaderResourceView*
 - See ImGui_ImplDX11_RenderDrawData() function in imgui_impl_dx11.cpp
 ```
 ```
 DirectX12:
 - ImTextureID = D3D12_GPU_DESCRIPTOR_HANDLE
 - See ImGui_ImplDX12_RenderDrawData() function in imgui_impl_dx12.cpp
 ```
 For example, in the OpenGL example binding we store raw OpenGL texture identifier (GLuint) inside ImTextureID.
 Whereas in the DirectX11 example binding we store a pointer to ID3D11ShaderResourceView inside ImTextureID, which is a higher-level structure tying together both the texture and information about its format and how to read it.
 - If you have a custom engine built over e.g. OpenGL, instead of passing GLuint around you may decide to use a high-level data type to carry information about the texture as well as how to display it (shaders, etc.). The decision of what to use as ImTextureID can always be made better knowing how your codebase is designed. If your engine has high-level data types for "textures" and "material" then you may want to use them.
 If you are starting with OpenGL or DirectX or Vulkan and haven't built much of a rendering engine over them, keeping the default ImTextureID representation suggested by the example bindings is probably the best choice.
 (Advanced users may also decide to keep a low-level type in ImTextureID, and use ImDrawList callback and pass information to their renderer)
 User code may do:
 ```cpp
 // Cast our texture type to ImTextureID / void*
 MyTexture* texture = g_CoffeeTableTexture;
 ImGui::Image((void*)texture, ImVec2(texture->Width, texture->Height));
 ```
 The renderer function called after ImGui::Render() will receive that same value that the user code passed:
 ```cpp
 // Cast ImTextureID / void* stored in the draw command as our texture type
 MyTexture* texture = (MyTexture*)pcmd->TextureId;
 MyEngineBindTexture2D(texture);
 ```
 Once you understand this design you will understand that loading image files and turning them into displayable textures is not within the scope of Dear ImGui.
 This is by design and is actually a good thing, because it means your code has full control over your data types and how you display them.
 If you want to display an image file (e.g. PNG file) into the screen, please refer to documentation and tutorials for the graphics API you are using.
 Refer to [Image Loading and Displaying Examples](https://github.com/ocornut/imgui/wiki/Image-Loading-and-Displaying-Examples) on the [Wiki](https://github.com/ocornut/imgui/wiki) to find simplified examples for loading textures with OpenGL, DirectX9 and DirectX11.
 C/C++ tip: a void* is pointer-sized storage. You may safely store any pointer or integer into it by casting your value to ImTextureID / void*, and vice-versa.
 Because both end-points (user code and rendering function) are under your control, you know exactly what is stored inside the ImTextureID / void*.
 Examples:
 ```cpp
 GLuint my_tex = XXX;
 void* my_void_ptr;
 my_void_ptr = (void*)(intptr_t)my_tex;                  // cast a GLuint into a void* (we don't take its address! we literally store the value inside the pointer)
 my_tex = (GLuint)(intptr_t)my_void_ptr;                 // cast a void* into a GLuint
 ID3D11ShaderResourceView* my_dx11_srv = XXX;
 void* my_void_ptr;
 my_void_ptr = (void*)my_dx11_srv;                       // cast a ID3D11ShaderResourceView* into an opaque void*
 my_dx11_srv = (ID3D11ShaderResourceView*)my_void_ptr;   // cast a void* into a ID3D11ShaderResourceView*
 ```
 Finally, you may call `ImGui::ShowMetricsWindow()` to explore/visualize/understand how the ImDrawList are generated.
 ##### [Return to Index](#index)
 ---
 ### Q: How can I use my own math types instead of ImVec2/ImVec4?
 You can edit [imconfig.h](https://github.com/ocornut/imgui/blob/master/imconfig.h) and setup the `IM_VEC2_CLASS_EXTRA`/`IM_VEC4_CLASS_EXTRA` macros to add implicit type conversions.
 This way you'll be able to use your own types everywhere, e.g. passing `MyVector2` or `glm::vec2` to ImGui functions instead of `ImVec2`.
 ##### [Return to Index](#index)
 ---
 ### Q: How can I interact with standard C++ types (such as std::string and std::vector)?
 - Being highly portable (bindings for several languages, frameworks, programming style, obscure or older platforms/compilers), and aiming for compatibility & performance suitable for every modern real-time game engines, dear imgui does not use any of std C++ types. We use raw types (e.g. char* instead of std::string) because they adapt to more use cases.
 - To use ImGui::InputText() with a std::string or any resizable string class, see [misc/cpp/imgui_stdlib.h](https://github.com/ocornut/imgui/blob/master/misc/cpp/imgui_stdlib.h).
 - To use combo boxes and list boxes with `std::vector` or any other data structure: the `BeginCombo()/EndCombo()` API
 lets you iterate and submit items yourself, so does the `ListBoxHeader()/ListBoxFooter()` API.
 Prefer using them over the old and awkward `Combo()/ListBox()` api.
 - Generally for most high-level types you should be able to access the underlying data type.
 You may write your own one-liner wrappers to facilitate user code (tip: add new functions in ImGui:: namespace from your code).
 - Dear ImGui applications often need to make intensive use of strings. It is expected that many of the strings you will pass
 to the API are raw literals (free in C/C++) or allocated in a manner that won't incur a large cost on your application.
 Please bear in mind that using `std::string` on applications with large amount of UI may incur unsatisfactory performances.
 Modern implementations of `std::string` often include small-string optimization (which is often a local buffer) but those
 are not configurable and not the same across implementations.
 - If you are finding your UI traversal cost to be too large, make sure your string usage is not leading to excessive amount
 of heap allocations. Consider using literals, statically sized buffers and your own helper functions. A common pattern
 is that you will need to build lots of strings on the fly, and their maximum length can be easily be scoped ahead.
 One possible implementation of a helper to facilitate printf-style building of strings: https://github.com/ocornut/Str
 This is a small helper where you can instance strings with configurable local buffers length. Many game engines will
 provide similar or better string helpers.
 ##### [Return to Index](#index)
 ---
 ### Q: How can I display custom shapes? (using low-level ImDrawList API)
 - You can use the low-level `ImDrawList` api to render shapes within a window.
 ```
 ImGui::Begin("My shapes");
 ImDrawList* draw_list = ImGui::GetWindowDrawList();
 // Get the current ImGui cursor position
 ImVec2 p = ImGui::GetCursorScreenPos();
 // Draw a red circle
 draw_list->AddCircleFilled(ImVec2(p.x + 50, p.y + 50), 30.0f, IM_COL32(255, 0, 0, 255), 16);
 // Draw a 3 pixel thick yellow line
 draw_list->AddLine(ImVec2(p.x, p.y), ImVec2(p.x + 100.0f, p.y + 100.0f), IM_COL32(255, 255, 0, 255), 3.0f);
 // Advance the ImGui cursor to claim space in the window (otherwise the window will appears small and needs to be resized)
 ImGui::Dummy(ImVec2(200, 200));
 ImGui::End();
 ```
 ![ImDrawList usage](https://raw.githubusercontent.com/wiki/ocornut/imgui/tutorials/CustomRendering01.png)
 - Refer to "Demo > Examples > Custom Rendering" in the demo window and read the code of `ShowExampleAppCustomRendering()` in `imgui_demo.cpp` from more examples.
 - To generate colors: you can use the macro `IM_COL32(255,255,255,255)` to generate them at compile time, or use `ImGui::GetColorU32(IM_COL32(255,255,255,255))` or `ImGui::GetColorU32(ImVec4(1.0f,1.0f,1.0f,1.0f))` to generate a color that is multiplied by the current value of `style.Alpha`.
 - Math operators: if you have setup `IM_VEC2_CLASS_EXTRA` in `imconfig.h` to bind your own math types, you can use your own math types and their natural operators instead of ImVec2. ImVec2 by default doesn't export any math operators in the public API. You may use `#define IMGUI_DEFINE_MATH_OPERATORS` `#include "imgui_internal.h"` to use the internally defined math operators, but instead prefer using your own math library and set it up in `imconfig.h`.
 - You can use `ImGui::GetBackgroundDrawList()` or `ImGui::GetForegroundDrawList()` to access draw lists which will be displayed behind and over every other dear imgui windows (one bg/fg drawlist per viewport). This is very convenient if you need to quickly display something on the screen that is not associated to a dear imgui window.
 - You can also create your own dummy window and draw inside it. Call Begin() with the NoBackground | NoDecoration | NoSavedSettings | NoInputs flags (The `ImGuiWindowFlags_NoDecoration` flag itself is a shortcut for NoTitleBar | NoResize | NoScrollbar | NoCollapse). Then you can retrieve the ImDrawList* via GetWindowDrawList() and draw to it in any way you like.
 - You can create your own ImDrawList instance. You'll need to initialize them with `ImGui::GetDrawListSharedData()`, or create your own instancing ImDrawListSharedData, and then call your renderer function with your own ImDrawList or ImDrawData data.
 ##### [Return to Index](#index)
 ---
 # Q&A: Fonts, Text
 ### Q: How can I load a different font than the default?
 Use the font atlas to load the TTF/OTF file you want:
 ```c
 ImGuiIO& io = ImGui::GetIO();
 io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
 io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
 ```
 Default is ProggyClean.ttf, monospace, rendered at size 13, embedded in dear imgui's source code.
 (Tip: monospace fonts are convenient because they allow to facilitate horizontal alignment directly at the string level.)
 (Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about font loading.)
 New programmers: remember that in C/C++ and most programming languages if you want to use a
 backslash \ within a string literal, you need to write it double backslash "\\":
 ```c
 io.Fonts->AddFontFromFileTTF("MyFolder\MyFont.ttf", size);  // WRONG (you are escaping the M here!)
 io.Fonts->AddFontFromFileTTF("MyFolder\\MyFont.ttf", size;  // CORRECT
 io.Fonts->AddFontFromFileTTF("MyFolder/MyFont.ttf", size);  // ALSO CORRECT
 ```
 ##### [Return to Index](#index)
 ---
 ### Q: How can I easily use icons in my application?
 The most convenient and practical way is to merge an icon font such as FontAwesome inside you
 main font. Then you can refer to icons within your strings.
 You may want to see `ImFontConfig::GlyphMinAdvanceX` to make your icon look monospace to facilitate alignment.
 (Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file for more details about icons font loading.)
 With some extra effort, you may use colorful icon by registering custom rectangle space inside the font atlas,
 and copying your own graphics data into it. See docs/FONTS.txt about using the AddCustomRectFontGlyph API.
 ##### [Return to Index](#index)
 ---
 ### Q: How can I load multiple fonts?
 Use the font atlas to pack them into a single texture:
 (Read the [docs/FONTS.txt](https://github.com/ocornut/imgui/blob/master/docs/FONTS.txt) file and the code in ImFontAtlas for more details.)
 ```cpp
 ImGuiIO& io = ImGui::GetIO();
 ImFont* font0 = io.Fonts->AddFontDefault();
 ImFont* font1 = io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels);
 ImFont* font2 = io.Fonts->AddFontFromFileTTF("myfontfile2.ttf", size_in_pixels);
 io.Fonts->GetTexDataAsRGBA32() or GetTexDataAsAlpha8()
 // the first loaded font gets used by default
 // use ImGui::PushFont()/ImGui::PopFont() to change the font at runtime
 // Options
 ImFontConfig config;
 config.OversampleH = 2;
 config.OversampleV = 1;
 config.GlyphOffset.y -= 1.0f;      // Move everything by 1 pixels up
 config.GlyphExtraSpacing.x = 1.0f; // Increase spacing between characters
 io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_pixels, &config);
 // Combine multiple fonts into one (e.g. for icon fonts)
 static ImWchar ranges[] = { 0xf000, 0xf3ff, 0 };
 ImFontConfig config;
 config.MergeMode = true;
 io.Fonts->AddFontDefault();
 io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 16.0f, &config, ranges); // Merge icon font
 io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_pixels, NULL, &config, io.Fonts->GetGlyphRangesJapanese()); // Merge japanese glyphs
 ```
 ##### [Return to Index](#index)
 ---
 ### Q: How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?
 When loading a font, pass custom Unicode ranges to specify the glyphs to load.
 ```cpp
 // Add default Japanese ranges
 io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
 // Or create your own custom ranges (e.g. for a game you can feed your entire game script and only build the characters the game need)
 ImVector<ImWchar> ranges;
 ImFontGlyphRangesBuilder builder;
 builder.AddText("Hello world");                        // Add a string (here "Hello world" contains 7 unique characters)
 builder.AddChar(0x7262);                               // Add a specific character
 builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
 builder.BuildRanges(&ranges);                          // Build the final result (ordered ranges with all the unique characters submitted)
 io.Fonts->AddFontFromFileTTF("myfontfile.ttf", 16.0f, NULL, ranges.Data);
 ```
 All your strings needs to use UTF-8 encoding. In C++11 you can encode a string literal in UTF-8
 by using the u8"hello" syntax. Specifying literal in your source code using a local code page
 (such as CP-923 for Japanese or CP-1251 for Cyrillic) will NOT work!
 Otherwise you can convert yourself to UTF-8 or load text data from file already saved as UTF-8.
 Text input: it is up to your application to pass the right character code by calling `io.AddInputCharacter()`.
 The applications in examples/ are doing that.
 Windows: you can use the WM_CHAR or WM_UNICHAR or WM_IME_CHAR message (depending if your app is built using Unicode or MultiByte mode).
 You may also use MultiByteToWideChar() or ToUnicode() to retrieve Unicode codepoints from MultiByte characters or keyboard state.
 Windows: if your language is relying on an Input Method Editor (IME), you copy the HWND of your window to io.ImeWindowHandle in order for
 the default implementation of io.ImeSetInputScreenPosFn() to set your Microsoft IME position correctly.
 ##### [Return to Index](#index)
 ---
 # Q&A: Concerns
 ### Q: Who uses Dear ImGui?
 You may take a look at:
 - [Quotes](https://github.com/ocornut/imgui/wiki/Quotes)
 - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui)
 - [Gallery](https://github.com/ocornut/imgui/issues/3075)
 ##### [Return to Index](#index)
 ---
 ### Q: Can you create elaborate/serious tools with Dear ImGui?
 Yes. People have written game editors, 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). The list of sponsors below is also an indicator that serious game teams have been using the library.
 Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might require you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
 Dear ImGui is built to be efficient and scalable toward the needs for AAA-quality applications running all day. The IMGUI paradigm offers different opportunities for optimization that the more typical RMGUI paradigm.
 ##### [Return to Index](#index)
 ---
 ### Q: Can you reskin the look of Dear ImGui?
 Somehow. You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized 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. Dear ImGui is NOT designed to create user interface for games, although with ingenious use of the low-level API you can do it.
 A reasonably skinned application may look like (screenshot from [#2529](https://github.com/ocornut/imgui/issues/2529#issuecomment-524281119))
 ![minipars](https://user-images.githubusercontent.com/314805/63589441-d9794f00-c5b1-11e9-8d96-cfc1b93702f7.png)
 ##### [Return to Index](#index)
 ---
 ### Q: Why using C++ (as opposed to C)?
 Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
 There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/cimgui/cimgui) by Sonoro1234 and Stephan Dilly. It is designed for creating binding to other languages. If possible, I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for various third-party bindings.
 ##### [Return to Index](#index)
 ---
 # Q&A: Community
 ### Q: How can I help?
 - Businesses: please reach out to `contact AT dearimgui.org` if you work in a place using Dear ImGui! We can discuss ways for your company to fund development via invoiced technical support, maintenance or sponsoring contacts. This is among the most useful thing you can do for Dear ImGui. With increased funding we can hire more people working on this project.
 - Individuals: you can support continued maintenance and development via PayPal donations. See [README](https://github.com/ocornut/imgui/blob/master/docs/README.md).
 - If you are experienced with Dear ImGui and C++, look at the [GitHub Issues](https://github.com/ocornut/imgui/issues), look at the [Wiki](https://github.com/ocornut/imgui/wiki), read [docs/TODO.txt](https://github.com/ocornut/imgui/blob/master/docs/TODO.txt) and see how you want to help and can help!
 - Disclose your usage of Dear ImGui via a dev blog post, a tweet, a screenshot, a mention somewhere etc.
 You may post screenshot or links in the [gallery threads](https://github.com/ocornut/imgui/issues/3075). Visuals are ideal as they inspire other programmers. Disclosing your use of dear imgui help the library grow credibility, and help other teams and programmers with taking decisions.
 - If you have issues or if you need to hack into the library, even if you don't expect any support it is useful that you share your issues or sometimes incomplete PR.
 ##### [Return to Index](#index)
--- a/docs/FONTS.txt
+++ b/docs/FONTS.txt
@ -0,0 +1,376 @@
 dear imgui
 FONTS DOCUMENTATION
 Also read https://www.dearimgui.org/faq for more fonts related infos.
 The code in imgui.cpp embeds a copy of 'ProggyClean.ttf' (by Tristan Grimmer),
 a 13 pixels high, pixel-perfect font used by default.
 We embed it font in source code so you can use Dear ImGui without any file system access.
 You may also load external .TTF/.OTF files.
 The files in this folder are suggested fonts, provided as a convenience.
 Please read the FAQ: https://www.dearimgui.org/faq
 Please use the Discord server: http://discord.dearimgui.org and not the Github issue tracker for basic font loading questions.
 ---------------------------------------
 INDEX:
 ---------------------------------------
 - Readme First / FAQ
 - Fonts Loading Instructions
 - Using Icons
 - Using FreeType rasterizer
 - Building Custom Glyph Ranges
 - Using custom colorful icons
 - Embedding Fonts in Source Code
 - Credits/Licences for fonts included in repository
 - Fonts Links
 ---------------------------------------
 README FIRST / FAQ
 ---------------------------------------
 - You can use the style editor ImGui::ShowStyleEditor() in the "Fonts" section to browse your fonts
  and understand what's going on if you have an issue.
 - Fonts are rasterized in a single texture at the time of calling either of io.Fonts->GetTexDataAsAlpha8()/GetTexDataAsRGBA32()/Build().
 - Make sure your font ranges data are persistent and available at the time the font atlas is being built.
 - Use C++11 u8"my text" syntax to encode literal strings as UTF-8. e.g.:
      u8"hello"
      u8"こんにちは"   // this will be encoded as UTF-8
 - If you want to include a backslash \ character in your string literal, you need to double them e.g. "folder\\filename".
  Read FAQ for details.
 ---------------------------------------
 FONTS LOADING INSTRUCTIONS
 ---------------------------------------
 Load default font:
  ImGuiIO& io = ImGui::GetIO();
  io.Fonts->AddFontDefault();
 Load .TTF/.OTF file with:
  ImGuiIO& io = ImGui::GetIO();
  io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
 Load multiple fonts:
  ImGuiIO& io = ImGui::GetIO();
  ImFont* font1 = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
  ImFont* font2 = io.Fonts->AddFontFromFileTTF("anotherfont.otf", size_pixels);
  // Select font at runtime
  ImGui::Text("Hello");	// use the default font (which is the first loaded font)
  ImGui::PushFont(font2);
  ImGui::Text("Hello with another font");
  ImGui::PopFont();
 For advanced options create a ImFontConfig structure and pass it to the AddFont function (it will be copied internally):
  ImFontConfig config;
  config.OversampleH = 2;
  config.OversampleV = 1;
  config.GlyphExtraSpacing.x = 1.0f;
  ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, &config);
 Combine two fonts into one:
  // Load a first font
  ImFont* font = io.Fonts->AddFontDefault();
  // Add character ranges and merge into the previous font
  // The ranges array is not copied by the AddFont* functions and is used lazily
  // so ensure it is available at the time of building or calling GetTexDataAsRGBA32().
  static const ImWchar icons_ranges[] = { 0xf000, 0xf3ff, 0 }; // Will not be copied by AddFont* so keep in scope.
  ImFontConfig config;
  config.MergeMode = true;
  io.Fonts->AddFontFromFileTTF("DroidSans.ttf", 18.0f, &config, io.Fonts->GetGlyphRangesJapanese());
  io.Fonts->AddFontFromFileTTF("fontawesome-webfont.ttf", 18.0f, &config, icons_ranges);
  io.Fonts->Build();
 Font atlas is too large?
 - If you have very large number of glyphs or multiple fonts, the texture may become too big for your graphics API.
 - The typical result of failing to upload a texture is if every glyphs appears as white rectangles.
 - In particular, using a large range such as GetGlyphRangesChineseSimplifiedCommon() is not recommended
  unless you set OversampleH/OversampleV to 1 and use a small font size.
 - Mind the fact that some graphics drivers have texture size limitation.
 - If you are building a PC application, mind the fact that users may run on hardware with lower specs than yours.
 Some solutions:
 - 1) Reduce glyphs ranges by calculating them from source localization data.
   You can use ImFontGlyphRangesBuilder for this purpose, this will be the biggest win!
 - 2) You may reduce oversampling, e.g. config.OversampleH = config.OversampleV = 1, this will largely reduce your texture size.
 - 3) Set io.Fonts.TexDesiredWidth to specify a texture width to minimize texture height (see comment in ImFontAtlas::Build function).
 - 4) Set io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight; to disable rounding the texture height to the next power of two.
 - Read about oversampling here: https://github.com/nothings/stb/blob/master/tests/oversample
 Add a fourth parameter to bake specific font ranges only:
  // Basic Latin, Extended Latin
  io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesDefault());
  // Default + Selection of 2500 Ideographs used by Simplified Chinese
  io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesChineseSimplifiedCommon());
  // Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
  io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels, NULL, io.Fonts->GetGlyphRangesJapanese());
 See "BUILDING CUSTOM GLYPH RANGES" section to create your own ranges.
 Offset font vertically by altering the io.Font->DisplayOffset value:
  ImFont* font = io.Fonts->AddFontFromFileTTF("font.ttf", size_pixels);
  font->DisplayOffset.y = 1;   // Render 1 pixel down
 ---------------------------------------
 USING ICONS
 ---------------------------------------
 Using an icon font (such as FontAwesome: http://fontawesome.io or OpenFontIcons. https://github.com/traverseda/OpenFontIcons)
 is an easy and practical way to use icons in your Dear ImGui application.
 A common pattern is to merge the icon font within your main font, so you can embed icons directly from your strings without
 having to change fonts back and forth.
 To refer to the icon UTF-8 codepoints from your C++ code, you may use those headers files created by Juliette Foucaut:
  https://github.com/juliettef/IconFontCppHeaders
 Those files contains a bunch of named #define which you can use to refer to specific icons of the font, e.g.:
  #define ICON_FA_MUSIC   "\xef\x80\x81"
  #define ICON_FA_SEARCH  "\xef\x80\x82"
 Example Setup:
  // Merge icons into default tool font
  #include "IconsFontAwesome.h"
  ImGuiIO& io = ImGui::GetIO();
  io.Fonts->AddFontDefault();
  ImFontConfig config;
  config.MergeMode = true;
  config.GlyphMinAdvanceX = 13.0f; // Use if you want to make the icon monospaced
  static const ImWchar icon_ranges[] = { ICON_MIN_FA, ICON_MAX_FA, 0 };
  io.Fonts->AddFontFromFileTTF("fonts/fontawesome-webfont.ttf", 13.0f, &config, icon_ranges);
 Example Usage:
  // Usage, e.g.
  ImGui::Text("%s among %d items", ICON_FA_SEARCH, count);
  ImGui::Button(ICON_FA_SEARCH " Search");
 Important to understand: C string _literals_ can be concatenated at compilation time, e.g. "hello" " world"
 ICON_FA_SEARCH is defined as a string literal so this is the same as "A" "B" becoming "AB"
 See Links below for other icons fonts and related tools.
 ---------------------------------------
 FREETYPE RASTERIZER, SMALL FONT SIZES
 ---------------------------------------
 Dear ImGui uses imstb_truetype.h to rasterize fonts (with optional oversampling).
 This technique and its implementation are not ideal for fonts rendered at _small sizes_, which may appear a
 little blurry or hard to read.
 There is an implementation of the ImFontAtlas builder using FreeType that you can use in the misc/freetype/ folder.
 FreeType supports auto-hinting which tends to improve the readability of small fonts.
 Note that this code currently creates textures that are unoptimally too large (could be fixed with some work).
 Also note that correct sRGB space blending will have an important effect on your font rendering quality.
 ---------------------------------------
 BUILDING CUSTOM GLYPH RANGES
 ---------------------------------------
 You can use the ImFontGlyphRangesBuilder helper to create glyph ranges based on text input.
 For example: for a game where your script is known, if you can feed your entire script to it and only build the characters the game needs.
  ImVector<ImWchar> ranges;
  ImFontGlyphRangesBuilder builder;
  builder.AddText("Hello world");                        // Add a string (here "Hello world" contains 7 unique characters)
  builder.AddChar(0x7262);                               // Add a specific character
  builder.AddRanges(io.Fonts->GetGlyphRangesJapanese()); // Add one of the default ranges
  builder.BuildRanges(&ranges);                          // Build the final result (ordered ranges with all the unique characters submitted)
  io.Fonts->AddFontFromFileTTF("myfontfile.ttf", size_in_pixels, NULL, ranges.Data);
  io.Fonts->Build();                                     // Build the atlas while 'ranges' is still in scope and not deleted.
 ---------------------------------------
 USING CUSTOM COLORFUL ICONS
 ---------------------------------------
 (This is a BETA api, use if you are familiar with dear imgui and with your rendering back-end)
 You can use the ImFontAtlas::AddCustomRect() and ImFontAtlas::AddCustomRectFontGlyph() api to register rectangles
 that will be packed into the font atlas texture. Register them before building the atlas, then call Build().
 You can then use ImFontAtlas::GetCustomRectByIndex(int) to query the position/size of your rectangle within the
 texture, and blit/copy any graphics data of your choice into those rectangles.
 Pseudo-code:
  // Add font, then register two custom 13x13 rectangles mapped to glyph 'a' and 'b' of this font
  ImFont* font = io.Fonts->AddFontDefault();
  int rect_ids[2];
  rect_ids[0] = io.Fonts->AddCustomRectFontGlyph(font, 'a', 13, 13, 13+1);
  rect_ids[1] = io.Fonts->AddCustomRectFontGlyph(font, 'b', 13, 13, 13+1);
  // Build atlas
  io.Fonts->Build();
  // Retrieve texture in RGBA format
  unsigned char* tex_pixels = NULL;
  int tex_width, tex_height;
  io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_width, &tex_height);
  for (int rect_n = 0; rect_n < IM_ARRAYSIZE(rect_ids); rect_n++)
  {
      int rect_id = rects_ids[rect_n];
      if (const ImFontAtlas::CustomRect* rect = io.Fonts->GetCustomRectByIndex(rect_id))
      {
          // Fill the custom rectangle with red pixels (in reality you would draw/copy your bitmap data here!)
          for (int y = 0; y < rect->Height; y++)
          {
              ImU32* p = (ImU32*)tex_pixels + (rect->Y + y) * tex_width + (rect->X);
              for (int x = rect->Width; x > 0; x--)
                  *p++ = IM_COL32(255, 0, 0, 255);
          }
      }
  }
 ---------------------------------------
 EMBEDDING FONTS IN SOURCE CODE
 ---------------------------------------
 Compile and use 'binary_to_compressed_c.cpp' to create a compressed C style array that you can embed in source code.
 See the documentation in binary_to_compressed_c.cpp for instruction on how to use the tool.
 You may find a precompiled version binary_to_compressed_c.exe for Windows instead of demo binaries package (see README).
 The tool can optionally output Base85 encoding to reduce the size of _source code_ but the read-only arrays in the
 actual binary will be about 20% bigger.
 Then load the font with:
  ImFont* font = io.Fonts->AddFontFromMemoryCompressedTTF(compressed_data, compressed_data_size, size_pixels, ...);
 or:
  ImFont* font = io.Fonts->AddFontFromMemoryCompressedBase85TTF(compressed_data_base85, size_pixels, ...);
 ---------------------------------------
 CREDITS/LICENSES FOR FONTS INCLUDED IN REPOSITORY
 ---------------------------------------
 Some fonts are available in the misc/fonts/ folder:
 Roboto-Medium.ttf
  Apache License 2.0
  by Christian Robertson
  https://fonts.google.com/specimen/Roboto
 Cousine-Regular.ttf
  by Steve Matteson
  Digitized data copyright (c) 2010 Google Corporation.
  Licensed under the SIL Open Font License, Version 1.1
  https://fonts.google.com/specimen/Cousine
 DroidSans.ttf
  Copyright (c) Steve Matteson
  Apache License, version 2.0
  https://www.fontsquirrel.com/fonts/droid-sans
 ProggyClean.ttf
  Copyright (c) 2004, 2005 Tristan Grimmer
  MIT License
  recommended loading setting: Size = 13.0, DisplayOffset.Y = +1
  http://www.proggyfonts.net/
 ProggyTiny.ttf
  Copyright (c) 2004, 2005 Tristan Grimmer
  MIT License
  recommended loading setting: Size = 10.0, DisplayOffset.Y = +1
  http://www.proggyfonts.net/
 Karla-Regular.ttf
  Copyright (c) 2012, Jonathan Pinhorn
  SIL OPEN FONT LICENSE Version 1.1
 ---------------------------------------
 FONTS LINKS
 ---------------------------------------
 ICON FONTS
  C/C++ header for icon fonts (#define with code points to use in source code string literals)
  https://github.com/juliettef/IconFontCppHeaders
  FontAwesome
  https://fortawesome.github.io/Font-Awesome
  OpenFontIcons
  https://github.com/traverseda/OpenFontIcons
  Google Icon Fonts
  https://design.google.com/icons/
  Kenney Icon Font (Game Controller Icons)
  https://github.com/nicodinh/kenney-icon-font
  IcoMoon - Custom Icon font builder
  https://icomoon.io/app
 REGULAR FONTS
  Google Noto Fonts (worldwide languages)
  https://www.google.com/get/noto/
  Open Sans Fonts
  https://fonts.google.com/specimen/Open+Sans
  (Japanese) M+ fonts by Coji Morishita are free
  http://mplus-fonts.sourceforge.jp/mplus-outline-fonts/index-en.html
 MONOSPACE FONTS (PIXEL PERFECT)
  Proggy Fonts, by Tristan Grimmer
  http://www.proggyfonts.net or http://upperbounds.net
  Sweet16, Sweet16 Mono, by Martin Sedlak (Latin + Supplemental + Extended A)
  https://github.com/kmar/Sweet16Font
  Also include .inl file to use directly in dear imgui.
 MONOSPACE FONTS (REGULAR)
  Google Noto Mono Fonts
  https://www.google.com/get/noto/
  Typefaces for source code beautification
  https://github.com/chrissimpkins/codeface
  Programmation fonts
  http://s9w.github.io/font_compare/
  Inconsolata
  http://www.levien.com/type/myfonts/inconsolata.html
  Adobe Source Code Pro: Monospaced font family for user interface and coding environments
  https://github.com/adobe-fonts/source-code-pro
  Monospace/Fixed Width Programmer's Fonts
  http://www.lowing.org/fonts/
 Or use Arial Unicode or other Unicode fonts provided with Windows for full characters coverage (not sure of their licensing).
--- a/docs/README.md
+++ b/docs/README.md
@ -0,0 +1,224 @@
 dear imgui
 =====
 [![Build Status](https://github.com/ocornut/imgui/workflows/build/badge.svg)](https://github.com/ocornut/imgui/actions?workflow=build)
 <sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out.)</sub>
 Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
 <br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
 Individuals: support continued maintenance and development with [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S).
 ----
 Dear ImGui is a **bloat-free graphical user interface library for C++**. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
 Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
 Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard.
 | [Usage](#usage) - [How it works](#how-it-works) - [Demo](#demo) - [Integration](#integration) |
 :----------------------------------------------------------: |
 | [Upcoming changes](#upcoming-changes) - [Gallery](#gallery) - [Support, FAQ](#support-frequently-asked-questions-faq) -  [How to help](#how-to-help) - [Sponsors](#sponsors) - [Credits](#credits) - [License](#license) |
 | [Wiki](https://github.com/ocornut/imgui/wiki) - [Language & frameworks bindings](https://github.com/ocornut/imgui/wiki/Bindings) - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) - [User quotes](https://github.com/ocornut/imgui/wiki/Quotes) |
 ### Usage
 **The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui.cpp, imgui.h, imgui_demo.cpp, imgui_draw.cpp etc.).
 **No specific build process is required**. You can add the .cpp files to your existing project.
 You will need a backend to integrate Dear ImGui in your app. The backend passes mouse/keyboard/gamepad inputs and variety of settings to Dear ImGui, and is in charge of rendering the resulting vertices.
 **Backends for a variety of graphics api and rendering platforms** are provided in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder, along with example applications. See the [Integration](#integration) section of this document for details. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
 After Dear ImGui is setup in your application, you can use it from \_anywhere\_ in your program loop:
 Code:
 ```cp
 ImGui::Text("Hello, world %d", 123);
 if (ImGui::Button("Save"))
    MySaveFunction();
 ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
 ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
 ```
 Result:
 <br>![sample code output (dark)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v175/capture_readme_styles_0001.png) ![sample code output (light)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v175/capture_readme_styles_0002.png)
 <br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
 Code:
 ```cpp
 // Create a window called "My First Tool", with a menu bar.
 ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
 if (ImGui::BeginMenuBar())
 {
    if (ImGui::BeginMenu("File"))
    {
        if (ImGui::MenuItem("Open..", "Ctrl+O")) { /* Do stuff */ }
        if (ImGui::MenuItem("Save", "Ctrl+S"))   { /* Do stuff */ }
        if (ImGui::MenuItem("Close", "Ctrl+W"))  { my_tool_active = false; }
        ImGui::EndMenu();
    }
    ImGui::EndMenuBar();
 }
 // Edit a color (stored as ~4 floats)
 ImGui::ColorEdit4("Color", my_color);
 // Plot some values
 const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
 ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
 // Display contents in a scrolling region
 ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
 ImGui::BeginChild("Scrolling");
 for (int n = 0; n < 50; n++)
    ImGui::Text("%04d: Some text", n);
 ImGui::EndChild();
 ImGui::End();
 ```
 Result:
 <br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
 Dear ImGui allows you to **create elaborate tools** as well as very short-lived ones. On the extreme side of short-livedness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.
 ### How it works
 Check out the Wiki's [About the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#About-the-IMGUI-paradigm) section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize superfluous state duplication, state synchronization and state retention from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces.
 Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes required to render them is fairly small. Because Dear ImGui doesn't know or touch graphics state directly, you can call its functions  anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase.
 _A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
 ### Demo
 Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcasing variety of features and examples. The code is always available for reference in `imgui_demo.cpp`.
 ![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png)
 You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
 - [imgui-demo-binaries-20190715.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20200412.zip) (Windows binaries, 1.76 WIP, built 2020/04/12, master branch, 5 executables) or [older demo binaries](http://www.dearimgui.org/binaries).
 The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with `style.ScaleAllSizes()`.
 ### Integration
 On most platforms and when using C++, **you should be able to use a combination of the [imgui_impl_xxxx](https://github.com/ocornut/imgui/tree/master/examples) files without modification** (e.g. `imgui_impl_win32.cpp` + `imgui_impl_dx11.cpp`). If your engine supports multiple platforms, consider using more of the imgui_impl_xxxx files instead of rewriting them: this will be less work for you and you can get Dear ImGui running immediately. You can _later_ decide to rewrite a custom binding using your custom engine functions if you wish so.
 Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer at ease with those concepts, it should take you less than two hours to integrate Dear ImGui in your custom engine. **Make sure to spend time reading the [FAQ](https://www.dearimgui.org/faq), comments, and some of the examples/ application!**
 Officially maintained bindings (in repository):
 - Renderers: DirectX9, DirectX10, DirectX11, DirectX12, OpenGL (legacy), OpenGL3/ES/ES2 (modern), Vulkan, Metal.
 - Platforms: GLFW, SDL2, Win32, Glut, OSX.
 - Frameworks: Emscripten, Allegro5, Marmalade.
 Third-party bindings (see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/) page):
 - Languages: C, C#/.Net, ChaiScript, D, Go, Haskell, Haxe/hxcpp, Java, JavaScript, Julia, Kotlin, Lua, Odin, Pascal, PureBasic, Python, Ruby, Rust, Swift...
 - Frameworks: AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium, GML/Game Maker Studio2, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, Nim Game Lib, Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, px_render, Qt/QtDirect3D, SFML, Sokol, Unreal Engine 4, vtk, Win32 GDI.
 - Note that C bindings ([cimgui](https://github.com/cimgui/cimgui)) are auto-generated, you can use its json/lua output to generate bindings for other languages.
 Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
 ### Upcoming Changes
 Some of the goals for 2020 are:
 - Finish work on docking, tabs. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
 - Finish work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public [docking](https://github.com/ocornut/imgui/tree/docking) branch looking for feedback)
 - Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
 - Finish work on new Tables API (to replace Columns). (see [#2957](https://github.com/ocornut/imgui/issues/2957))
 - Add an automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
 - Make the examples look better, improve styles, improve font support, make the examples hi-DPI and multi-DPI aware.
 ### Gallery
 For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/3075)!
 Custom engine
 [![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
 Custom engine
 [![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
 [Tracy Profiler](https://bitbucket.org/wolfpld/tracy)
 ![tracy profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v176/tracy_profiler.png)
 ### Support, Frequently Asked Questions (FAQ)
 Most common questions will be answered by the [Frequently Asked Questions (FAQ)](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md) page.
 See: [Wiki](https://github.com/ocornut/imgui/wiki) for many links, references, articles.
 See: [Articles about the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#Articles-about-the-IMGUI-paradigm) to read/learn about the Immediate Mode GUI paradigm.
 If you are new to Dear ImGui and have issues with: compiling, linking, adding fonts, wiring inputs, running or displaying Dear ImGui: you can use [Discord server](http://discord.dearimgui.org).
 Otherwise, for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
 Paid private support is available for business customers (E-mail: _contact @ dearimgui dot org_).
 **Which version should I get?**
 I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
 You may also peak at the [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features in the `docking` branch. Many projects are using this branch and it is kept in sync with master regularly.
 **Who uses Dear ImGui?**
 See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors), [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also see the [Gallery Threads](https://github.com/ocornut/imgui/issues/3075)!
 How to help
 -----------
 **How can I help?**
 - You may participate in the [Discord server](http://discord.dearimgui.org), [GitHub forum/issues](https://github.com/ocornut/imgui/issues).
 - You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest in the end-users and also to ease the maintainer into understanding and accepting it.
 - See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
 - Have your company financially support this project.
 **How can I help financing further development of Dear ImGui?**
 Your contributions are keeping this project alive. The library is available under a free and permissive license, but continued maintenance and development are a full-time endeavor and I would like to grow the team. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced technical support and maintenance contracts. Thank you!
 Businesses: support continued development via invoiced technical support, maintenance, sponsoring contracts:
 <br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot org_
 Individuals: support continued maintenance and development with [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S).
 Sponsors
 --------
 Ongoing Dear ImGui development is financially supported by users and private sponsors, recently:
 *Platinum-chocolate sponsors*
 - [Blizzard](https://careers.blizzard.com/en-us/openings/engineering/all/all/all/1), [Google](https://github.com/google/filament), [Nvidia](https://developer.nvidia.com/nvidia-omniverse), [Ubisoft](https://montreal.ubisoft.com/en/ubisoft-sponsors-user-interface-library-for-c-dear-imgui/)
 *Double-chocolate and Salty caramel sponsors*
 - [Activision](https://careers.activision.com/c/programmingsoftware-engineering-jobs), [DotEmu](http://www.dotemu.com), [Framefield](http://framefield.com), [Hexagon](https://hexagonxalt.com/the-technology/xalt-visualization), [Kylotonn](https://www.kylotonn.com), [Media Molecule](http://www.mediamolecule.com), [Mesh Consultants](https://www.meshconsultants.ca), [Mobigame](http://www.mobigame.net), [Nadeo](https://www.nadeo.com), [Supercell](http://www.supercell.com), [Remedy Entertainment](https://www.remedygames.com/), [Unit 2 Games](https://unit2games.com/)
 From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations. Please see [detailed list of Dear ImGui supporters](https://github.com/ocornut/imgui/wiki/Sponsors).
 **THANK YOU to all past and present supporters for helping to keep this project alive and thriving!**
 Dear ImGui is using software and services provided free of charge for open source projects:
 - [PVS-Studio](https://www.viva64.com/en/b/0570/) for static analysis.
 - [GitHub actions](https://github.com/features/actions) for continuous integration systems.
 - [OpenCppCoverage](https://github.com/OpenCppCoverage/OpenCppCoverage) for code coverage analysis.
 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) (PS Vita).
 I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it.
 Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
 Embeds [stb_textedit.h, stb_truetype.h, stb_rect_pack.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.
 License
 -------
 Dear ImGui is licensed under the MIT License, see [LICENSE.txt](https://github.com/ocornut/imgui/blob/master/LICENSE.txt) for more information.
--- a/docs/TODO.txt
+++ b/docs/TODO.txt
@ -0,0 +1,401 @@
 dear imgui
 ISSUES & TODO LIST
 Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
 The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
 It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
 - doc/test: add a proper documentation+regression testing system (#435)
 - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
 - doc/tips: tips of the day: website? applet in imgui_club?
 - doc/wiki: work on the wiki https://github.com/ocornut/imgui/wiki
 - window: preserve/restore relative focus ordering (persistent or not) (#2304) -> also see docking reference to same #.
 - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
 - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
 - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
 - window: begin with *p_open == false could return false.
 - window: get size/pos helpers given names (see discussion in #249)
 - window: a collapsed window can be stuck behind the main menu bar?
 - window: when window is very small, prioritize resize button over close button.
 - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
 - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
 - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
 - window: expose contents size. (#1045)
 - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
 - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
 - window: investigate better auto-positioning for new windows.
 - window: top most window flag? (#2574)
 - window: the size_on_first_use path of Begin() can probably be removed
 - window/size: manually triggered auto-fit (double-click on grip) shouldn't resize window down to viewport size?
 - window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
 - window/child: background options for child windows, border option (disable rounding).
 - window/child: allow resizing of child windows (possibly given min/max for each axis?.)
 - window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
 - window/child: border could be emitted in parent as well.
 - window/child: allow SetNextWindowContentSize() to work on child windows.
 - window/clipping: some form of clipping when DisplaySize (or corresponding viewport) is zero.
 - window/tab: add a way to signify that a window or docked window requires attention (e.g. blinking title bar).
 ! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose lots of issues (#2424, #1463)
 - scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
 - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
 - scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
 - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
 - scrolling/style: shadows on scrollable areas to denote that there is more contents (see e.g. DaVinci Resolve ui)
 - drawdata: make it easy to clone (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (e.g. #2646)
 ! drawlist: add calctextsize func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
 - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
 - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
 - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
 - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
 - drawlist: non-AA strokes have gaps between points (#593, #288), glitch especially on RenderCheckmark() and ColorPicker4().
 - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
 - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
 - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
 - drawlist: AddRect vs AddLine position confusing (#2441)
 - drawlist: channel splitter should be external helper and not stored in ImDrawList.
 - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
 - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
 - drawlist/opt: thick AA line could be doable in same number of triangles as 1.0 AA line by storing gradient+full color in atlas.
 - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
 - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
 - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
 - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
 - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
 - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
 - widgets: add always-allow-overlap mode. This should perhaps be the default? one problem is that highlight after mouse-wheel scrolling gets deferred, makes scrolling more flickery.
 - widgets: start exposing PushItemFlag() and ImGuiItemFlags
 - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
 - widgets: activate by identifier (trigger button, focus given id)
 - widgets: a way to represent "mixed" values, so e.g. all values replaced with *, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed) (#2644)
 - widgets: checkbox: checkbox with custom glyph inside frame.
 - widgets: coloredit: keep reporting as active when picker is on?
 - widgets: group/scalarn functions: expose more per-component information. e.g. store NextItemData.ComponentIdx set by scalarn function, groups can expose them back somehow.
 - selectable: using (size.x == 0.0f) and (SelectableTextAlign.x > 0.0f) followed by SameLine() is currently not supported.
 - selectable: generic BeginSelectable()/EndSelectable() mechanism.
 - selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
 - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile.
 - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
 - input text: expose CursorPos in char filter event (#816)
 - input text: try usage idiom of using InputText with data only exposed through get/set accessors, without extraneous copy/alloc. (#3009)
 - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
 - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
 - input text: hover tooltip could show unclamped text
 - input text: option to Tab after an Enter validation.
 - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
 - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
 - input text: add flag (e.g. ImGuiInputTextFlags_EscapeClearsBuffer) to clear instead of revert. what to do with focus? (also see #2890)
 - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
 - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
 - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
 - input text: decorrelate layout from inputs - e.g. what's the easiest way to implement a nice IP/Mac address input editor?
 - input text: global callback system so user can plug in an expression evaluator easily. (#1691)
 - input text: force scroll to end or scroll to a given line/contents (so user can implement a log or a search feature)
 - input text: a way to preview completion (e.g. disabled text completing from the cursor)
 - input text: a side bar that could e.g. preview where errors are. probably left to the user to draw but we'd need to give them the info there.
 - input text: a way for the user to provide syntax coloring.
 - input text: Shift+TAB with ImGuiInputTextFlags_AllowTabInput could eat preceding blanks, up to tab_count.
 - input text: facilitate patterns like if (InputText(..., obj.get_string_ref()) { obj.set_string(...); } relying on internally held buffer.
 - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
 - input text multi-line: support for cut/paste without selection (cut/paste the current line)
 - input text multi-line: line numbers? status bar? (follow up on #200)
 - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
 - input text multi-line: better horizontal scrolling support (#383, #1224)
 - input text multi-line: single call to AddText() should be coarse clipped on InputTextEx() end.
 - input number: optional range min/max for Input*() functions
 - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
 - input number: use mouse wheel to step up/down
 - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
 - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
 - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
 - layout: horizontal layout helper (#97)
 - layout: horizontal flow until no space left (#404)
 - layout: more generic alignment state (left/right/centered) for single items?
 - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
 - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
 - layout: null layout mode were items are not rendered but user can query GetItemRectMin()/Max/Size.
 - layout: (R&D) local multi-pass layout mode.
 - layout: (R&D) bind authored layout data (created by an off-line tool), items fetch their pos/size at submission, self-optimize data structures to stable linear access.
 - group: BeginGroup() needs a border option. (~#1496)
 - group: IsHovered() after EndGroup() covers whole aabb rather than the intersection of individual items. Is that desirable?
 - group: merge deactivation/activation within same group (fwd WasEdited flag). (#2550)
 - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
 - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
 - columns: headers. re-orderable. (#513, #125)
 - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
 - columns: option to alternate background colors on odd/even scanlines.
 - columns: allow columns to recurse.
 - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them.
 - columns: sizing is lossy when columns width is very small (default width may turn negative etc.)
 - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
 - columns: flag to add horizontal separator above/below?
 - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
 !- color: the color conversion helpers/types are a mess and needs sorting out.
 - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
 - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
 - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
 - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
 - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
 - plot: option/feature: draw the zero line
 - plot: option/feature: draw grid, vertical markers
 - plot: option/feature: draw unit
 - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
 - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
 - clipper: ability to disable the clipping through a simple flag/bool.
 - clipper: ability to run without knowing full count in advance.
 - clipper: horizontal clipping support. (#2580)
 - separator: expose flags (#759)
 - separator: width, thickness, centering (#1643)
 - splitter: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
 - dock: merge docking branch (#2109)
 - dock: dock out from a collapsing header? would work nicely but need emitting window to keep submitting the code.
 - tabs: make EndTabBar fail if users doesn't respect BeginTabBar return value, for consistency/future-proofing.
 - tabs: persistent order/focus in BeginTabBar() api (#261, #351)
 - tabs: TabItem could honor SetNextItemWidth()?
 - tabs: explicit api (even if internal) to cleanly manipulate tab order.
 - tabs: Mouse wheel over tab bar could scroll? (#2702)
 - image/image button: misalignment on padded/bordered button?
 - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
 - image button: not taking an explicit id can be problematic. (#2464, #1390)
 - button: provide a button that looks framed. (?)
 - slider/drag: ctrl+click when format doesn't include a % character.. disable? display underlying value in default format? (see TempInputTextScalar)
 - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
 - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
 - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
 - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
 - slider: relative dragging? + precision dragging
 - slider: step option (#1183)
 - slider style: fill % of the bar instead of positioning a drag.
 - knob: rotating knob widget (#942)
 - drag float: power/logarithmic slider and drags are weird. (#1316)
 - drag float: up/down axis
 - drag float: power != 0.0f with current value being outside the range keeps the value stuck.
 - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
 - combo: use clipper: make it easier to disable clipper with a single flag.
 - combo: flag for BeginCombo to not return true when unchanged (#1182)
 - combo: a way/helper to customize the combo preview (#1658)
 - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
 - listbox: refactor and clean the begin/end api
 - listbox: multiple selection.
 - listbox: unselect option (#1208)
 - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
 - listbox: user may want to initial scroll to focus on the one selected value?
 - listbox: expose hovered item for a basic ListBox
 - listbox: keyboard navigation.
 - listbox: disable capturing mouse wheel if the listbox has no scrolling. (#1681)
 - listbox: scrolling should track modified selection.
 - listbox: future api should allow to enable horizontal scrolling (#2510)
 !- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
 - popups/modal: make modal title bar blink when trying to click outside the modal
 - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
 - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
 - popups: clicking outside (to close popup) and holding shouldn't drag window below.
 - popups: add variant using global identifier similar to Begin/End (#402)
 - popups: border options. richer api like BeginChild() perhaps? (#197)
 - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
 - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
 - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
 - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485)
 - tooltip: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers.
 - menus: menu bars inside modal windows are acting weird.
 - status-bar: add a per-window status bar helper similar to what menu-bar does.
 - shortcuts: local-style shortcut api, e.g. parse "&Save"
 - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
 - shortcuts: programmatically access shortcuts "Focus("&Save"))
 - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
 - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
 - menus: could merge draw call in most cases (how about storing an optional aabb in ImDrawCmd to move the burden of merging in a single spot).
 - menus: would be nice if the Selectable() supported horizontal alignment (must be given the equivalent of WorkRect.Max.x matching the position of the shortcut column)
 - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
 - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
 - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
 - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
 - tree node: leaf/non-leaf highlight mismatch.
 - tree node/opt: could avoid formatting when clipped (flag assuming we don't care about width/height, assume single line height?)
 - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
 - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
 - settings/persistence: helpers to make TreeNodeBehavior persist (even during dev!) - may need to store some semantic and/or data type in ImGuiStoragePair
 - style: better default styles. (#707)
 - style: add a highlighted text color (for headers, etc.)
 - style: border types: out-screen, in-screen, etc. (#447)
 - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
 - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
 - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
 - style: global scale setting.
 - style: FramePadding could be different for up vs down (#584)
 - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
 - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
 - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
 - style editor: color child window height expressed in multiple of line height.
 - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
 - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
 - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
 - log: obsolete LogButtons() all together.
 - log: LogButtons() options for specifying depth and/or hiding depth slider
 - log: enabling log ends up pushing and growing vertices buffersbecause we don't distinguish layout vs render clipping
 - filters: set a current filter that tree node can automatically query to hide themselves
 - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
 - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
 - drag and drop: fix/support/options for overlapping drag sources.
 - drag and drop: releasing a drop shows the "..." tooltip for one frame - since e13e598 (#1725)
 - drag and drop: drag source on a group object (would need e.g. an invisible button covering group in EndGroup) https://twitter.com/paniq/status/1121446364909535233
 - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov. (see 2018/01/11 post in #143)
 - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
 - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
 - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
 - drag and drop: demo with reordering nodes (in a list, or a tree node). (#143)
 - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
 - drag and drop: allow for multiple payload types. (#143)
 - drag and drop: make payload optional? payload promise? (see 2018/01/11 post in #143)
 - drag and drop: (#143) "both an in-process pointer and a promise to generate a serialized version, for whether the drag ends inside or outside the same process"
 - drag and drop: feedback when hovering a region blocked by modal (mouse cursor "NO"?)
 - node/graph editors (#306) (also see https://github.com/ocornut/imgui/wiki#node-editors)
 - pie menus patterns (#434)
 - markup: simple markup language for color change? (#902)
 - text: selectable text (for copy) as a generic feature (ItemFlags?)
 - text: proper alignment options in imgui_internal.h
 - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
 - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
 - text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
 - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
 - text/wrapped: should be a more first-class citizen, e.g. wrapped text within a Selectable with known width.
 - text/wrapped: custom separator for text wrapping. (#3002)
 - text/wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
 - font: arbitrary line spacing. (#2945)
 - font: MergeMode: flags to select overwriting or not (this is now very easy with refactored ImFontAtlasBuildWithStbTruetype)
 - font: free the Alpha buffer if user only requested RGBA.
 !- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
 - font: for the purpose of RenderTextEllipsis(), it might be useful that CalcTextSizeA() can ignore the trailing padding?
 - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
 - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
 - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data
 - font: remove ID from CustomRect registration, it seems unnecessary!
 - font: make it easier to submit own bitmap font (same texture, another texture?). (#2127, #2575)
 - font: PushFontSize API (#1018)
 - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
 - font: storing MinAdvanceX per font would allow us to skip calculating line width (under a threshold of character count) in loops looking for block width
 - font/demo: add tools to show glyphs used by a text blob, display U16 value, list missing glyphs.
 - font/demo: demonstrate use of ImFontGlyphRangesBuilder.
 - font/atlas: add a missing Glyphs.reserve()
 - font/atlas: incremental updates
 - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
 - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
 - font/draw: need to be able to specify wrap start position.
 - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
 - font/draw: underline, squiggle line rendering helpers.
 - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct), would save on cache line.
 - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
 - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
 - font: fix AddRemapChar() to work before atlas  has been built.
 - font: support for unicode codepoints higher than 0xFFFF? (pr #2815)
 - font: (api breaking) remove "TTF" from symbol names. also because it now supports OTF.
 - font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
 - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16 bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
 - nav: some features such as PageUp/Down/Home/End should probably work without ImGuiConfigFlags_NavEnableKeyboard? (where do we draw the line?)
 ! nav: never clear NavId on some setup (e.g. gamepad centric)
 - nav: code to focus child-window on restoring NavId appears to have issue: e.g. when focus change is implicit because of window closure.
 - nav: configuration flag to disable global shortcuts (currently only CTRL-Tab) ?
 - nav: Home/End behavior when navigable item is not fully visible at the edge of scrolling? should be backtrack to keep item into view?
 - nav: NavScrollToBringItemIntoView() with item bigger than view should focus top-right? Repro: using Nav in "About Window"
 - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
 - nav: patterns to make it possible for arrows key to update selection
 - nav: restore/find nearest NavId when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
 - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
 - nav: NavFlattened: ESC on a flattened child should select something.
 - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
 - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
 - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
 - nav/treenode: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
 - nav/menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
 - nav/menus: allow pressing Menu to leave a sub-menu.
 - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB) or last focused window menu bar?
 - nav/menus: when using the main menu bar, even though we restore focus after, the underlying window loses its title bar highlight during menu manipulation. could we prevent it?
 - nav/menus: main menu bar currently cannot restore a NULL focus. Could save NavWindow at the time of being focused, similarly to what popup do?
 - nav/menus: Alt,Up could open the first menu (e.g. "File") currently it tends to nav into the window/collapse menu. Do do that we would need custom transition?
 - nav/windowing: configure fade-in/fade-out delay on Ctrl+Tab?
 - nav/windowing: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
 - nav: simulate right-click or context activation? (SHIFT+F10)
 - nav: tabs should go through most/all widgets (in submission order?).
 - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
 - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
 - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
 - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
 - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
 - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
 - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
 - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
 - inputs: support track pad style scrolling & slider edit.
 - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
 - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
 - inputs/scrolling: support for smooth scrolling (#2462, #2569)
 - misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for back-end to be able stop refreshing easily.
 - misc: idle: if cursor blink if the _only_ visible animation, core imgui could rewrite vertex alpha to avoid CPU pass on ImGui:: calls.
 - misc: idle: if cursor blink if the _only_ visible animation, could even expose a dirty rectangle that optionally can be leverage by some app to render in a smaller viewport, getting rid of much pixel shading cost.
 - misc: no way to run a root-most GetID() with ImGui:: api since there's always a Debug window in the stack. (mentioned in #2960)
 - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
 - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
 - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
 - misc: use more size_t in public api?
 - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683)
 - misc: possible compile-time support for wchar_t instead of char*?
 - remote: make a system like RemoteImGui first-class citizen/project (#75)
 - demo: find a way to demonstrate textures in the examples application, as it such a common issue for new users.
 - demo: demonstrate using PushStyleVar() in more details.
 - demo: add vertical separator demo
 - demo: add virtual scrolling example?
 - demo: demonstrate Plot offset
 - demo: window size constraint: square demo is broken when resizing from edges (#1975), would need to rework the callback system to solve this
 - examples: window minimize, maximize (#583)
 - examples: provide a zero frame-rate/idle example.
 - examples: dx11/dx12: try to use new swapchain blit models (#2970)
 - backends: apple: example_apple should be using modern GL3.
 - backends: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
 - backends: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
 - backends: opengl: could use a single vertex buffer and glBufferSubData for uploads?
 - backends: opengl: explicitly disable GL_STENCIL_TEST in bindings.
 - backends: opengl: consider gl_lite loader https://github.com/ApoorvaJ/Papaya/blob/3808e39b0f45d4ca4972621c847586e4060c042a/src/libs/gl_lite.h
 - backends: vulkan: viewport: support for synchronized swapping of multiple swap chains.
 - backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
 - backends: mscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
 - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
 - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
 - optimization: fully covered window (covered by another with non-translucent bg + WindowRounding worth of padding) may want to clip rendering.
 - optimization: use another hash function than crc32, e.g. FNV1a
 - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
 - optimization: turn some the various stack vectors into statically-sized arrays
--- a/examples/.gitignore
+++ b/examples/.gitignore
@ -1,28 +0,0 @@
 ## Visual Studio files
 Debug/*
 Release/*
 ipch/*
 x64/*
 directx9_example/Debug/*
 directx9_example/Release/*
 directx9_example/ipch/*
 directx9_example/x64/*
 directx11_example/Debug/*
 directx11_example/Release/*
 directx11_example/ipch/*
 directx11_example/x64/*
 opengl_example/Debug/*
 opengl_example/Release/*
 opengl_example/ipch/*
 opengl_example/x64/*
 opengl3_example/Debug/*
 opengl3_example/Release/*
 opengl3_example/ipch/*
 opengl3_example/x64/*
 *.opensdf
 *.sdf
 *.suo
 *.vcxproj.user
 ## Ini files
 imgui.ini
--- a/examples/README.txt
+++ b/examples/README.txt
@ -1,24 +1,287 @@
-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.
+ dear imgui, v1.76
-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!
+ examples/README.txt
-You can probably just import the .cpp files into your own system and figure out the linkage from there.
+ (This is the README file for the examples/ folder. See docs/ for more documentation)
 -----------------------------------------------------------------------
 Dear ImGui is highly portable and only requires a few things to run and render:
 - Providing mouse/keyboard inputs
 - Uploading 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.
 This is essentially what the example bindings in this folder are providing + obligatory portability cruft.
 It is important to understand the difference between the core Dear ImGui library (files in the root folder)
 and examples bindings which we are describing here (examples/ folder).
 You should be able to write bindings for pretty much any platform and any 3D graphics API. With some extra
 effort you can even perform the rendering remotely, on a different machine than the one running the logic.
 This folder contains two things:
 - Example bindings for popular platforms/graphics API, which you can use as is or adapt for your own use.
   They are the imgui_impl_XXXX files found in the examples/ folder.
 - Example applications (standalone, ready-to-build) using the aforementioned bindings.
   They are the in the XXXX_example/ sub-folders.
 You can find binaries of some of those example applications at:
  http://www.dearimgui.org/binaries
-opengl_example/
+---------------------------------------
-    OpenGL example, using GLFW + fixed pipeline.
+ MISC COMMENTS AND SUGGESTIONS
-    This is simple and should work for all OpenGL enabled applications.
+---------------------------------------
    Prefer following this example since it is the shortest one!
-opengl3_example/
+ - Read FAQ at http://dearimgui.org/faq
    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.
-directx9_example/
+ - Please read 'PROGRAMMER GUIDE' in imgui.cpp for notes on how to setup Dear ImGui in your codebase.
   Please read the comments and instruction at the top of each file.
 - If you are using of the backend provided here, so you can copy the imgui_impl_xxx.cpp/h files
   to your project and use them unmodified. Each imgui_impl_xxxx.cpp comes with its own individual
   ChangeLog at the top of the .cpp files, so if you want to update them later it will be easier to
   catch up with what changed.
 - Dear ImGui has 0 to 1 frame of lag for most behaviors, at 60 FPS your experience should be pleasant.
   However, consider that OS mouse cursors are typically drawn through a specific hardware accelerated path
   and will feel smoother than common GPU rendered contents (including Dear ImGui windows).
   You may experiment with the io.MouseDrawCursor flag to request Dear ImGui to draw a mouse cursor itself,
   to visualize the lag between a hardware cursor and a software cursor. However, rendering a mouse cursor
   at 60 FPS will feel slow. It might be beneficial to the user experience to switch to a software rendered
   cursor only when an interactive drag is in progress.
   Note that some setup or GPU drivers are likely to be causing extra lag depending on their settings.
   If you feel that dragging windows feels laggy and you are not sure who to blame: try to build an
   application drawing a shape directly under the mouse cursor.
 ---------------------------------------
 EXAMPLE BINDINGS
 ---------------------------------------
 Most the example bindings are split in 2 parts:
 - The "Platform" bindings, in charge of: mouse/keyboard/gamepad inputs, cursor shape, timing, windowing.
   Examples: Windows (imgui_impl_win32.cpp), GLFW (imgui_impl_glfw.cpp), SDL2 (imgui_impl_sdl.cpp), etc.
 - The "Renderer" bindings, in charge of: creating the main font texture, rendering imgui draw data.
   Examples: DirectX11 (imgui_impl_dx11.cpp), GL3 (imgui_impl_opengl3.cpp), Vulkan (imgui_impl_vulkan.cpp), etc.
 - The example _applications_ usually combine 1 platform + 1 renderer binding to create a working program.
   Examples: the example_win32_directx11/ application combines imgui_impl_win32.cpp + imgui_impl_dx11.cpp.
 - Some bindings for higher level frameworks carry both "Platform" and "Renderer" parts in one file.
   This is the case for Allegro 5 (imgui_impl_allegro5.cpp), Marmalade (imgui_impl_marmalade5.cpp).
 - If you use your own engine, you may decide to use some of existing bindings and/or rewrite some using
   your own API. As a recommendation, if you are new to Dear ImGui, try using the existing binding as-is
   first, before moving on to rewrite some of the code. Although it is tempting to rewrite both of the
   imgui_impl_xxxx files to fit under your coding style, consider that it is not necessary!
   In fact, if you are new to Dear ImGui, rewriting them will almost always be harder.
   Example: your engine is built over Windows + DirectX11 but you have your own high-level rendering
   system layered over DirectX11.
     Suggestion: step 1: try using imgui_impl_win32.cpp + imgui_impl_dx11.cpp first.
     Once this work, _if_ you want you can replace the imgui_impl_dx11.cpp code with a custom renderer
     using your own functions, etc.
     Please consider using the bindings to the lower-level platform/graphics API as-is.
   Example: your engine is multi-platform (consoles, phones, etc.), you have high-level systems everywhere.
     Suggestion: step 1: try using a non-portable binding first (e.g. win32 + underlying graphics API)!
     This is counter-intuitive, but this will get you running faster! Once you better understand how imgui
     works and is bound, you can rewrite the code using your own systems.
 - Road-map: Dear ImGui 1.80 (WIP currently in the "docking" branch) will allows imgui windows to be
   seamlessly detached from the main application window. This is achieved using an extra layer to the
   platform and renderer bindings, which allows Dear ImGui to communicate platform-specific requests.
   If you decide to use unmodified imgui_impl_xxxx.cpp files, you will automatically benefit from
   improvements and fixes related to viewports and platform windows without extra work on your side.
 List of Platforms Bindings in this repository:
    imgui_impl_glfw.cpp       ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
    imgui_impl_osx.mm         ; macOS native API (not as feature complete as glfw/sdl back-ends)
    imgui_impl_sdl.cpp        ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
    imgui_impl_win32.cpp      ; Win32 native API (Windows)
    imgui_impl_glut.cpp       ; GLUT/FreeGLUT (absolutely not recommended in 2020!)
 List of Renderer Bindings in this repository:
    imgui_impl_dx9.cpp        ; DirectX9
    imgui_impl_dx10.cpp       ; DirectX10
    imgui_impl_dx11.cpp       ; DirectX11
    imgui_impl_dx12.cpp       ; DirectX12
    imgui_impl_metal.mm       ; Metal (with ObjC)
    imgui_impl_opengl2.cpp    ; OpenGL 2 (legacy, fixed pipeline <- don't use with modern OpenGL context)
    imgui_impl_opengl3.cpp    ; OpenGL 3/4, OpenGL ES 2, OpenGL ES 3 (modern programmable pipeline)
    imgui_impl_vulkan.cpp     ; Vulkan
 List of high-level Frameworks Bindings in this repository: (combine Platform + Renderer)
    imgui_impl_allegro5.cpp
    imgui_impl_marmalade.cpp
 Note that Dear ImGui works with Emscripten. The examples_emscripten/ app uses imgui_impl_sdl.cpp and
 imgui_impl_opengl3.cpp, but other combinations are possible.
 Third-party framework, graphics API and languages bindings are listed at:
    https://github.com/ocornut/imgui/wiki/Bindings
 Including backends for:
    AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium,
    GML/Game Maker Studio2, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, Nim Game Lib,
    Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, px_render, Qt/QtDirect3D, SFML, Sokol,
    Unreal Engine 4, vtk, Win32 GDI, etc.
 Not sure which to use?
 Recommended platform/frameworks:
    GLFW    https://github.com/glfw/glfw        Use imgui_impl_glfw.cpp
    SDL2    https://www.libsdl.org              Use imgui_impl_sdl.cpp
    Sokol   https://github.com/floooh/sokol     Use util/sokol_imgui.h in Sokol repository.
 Those will allow you to create portable applications and will solve and abstract away many issues.
 ---------------------------------------
 EXAMPLE APPLICATIONS
 ---------------------------------------
 Building:
  Unfortunately in 2020 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+
   - Xcode project files for the Apple examples
  Please let me know if they don't work with your setup!
  You can probably just import the imgui_impl_xxx.cpp/.h files into your own codebase or compile those
  directly with a command-line compiler.
  If you are interested in using Cmake to build and links examples, see:
    https://github.com/ocornut/imgui/pull/1713 and https://github.com/ocornut/imgui/pull/3027
 example_allegro5/
    Allegro 5 example.
    = main.cpp + imgui_impl_allegro5.cpp
 example_apple_metal/
    OSX & iOS + Metal.
    = main.m + imgui_impl_osx.mm + imgui_impl_metal.mm
    It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
    (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms back-ends.
    You may prefer to use the GLFW Or SDL back-ends, which will also support Windows and Linux.)
 example_apple_opengl2/
    OSX + OpenGL2.
    = main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp
    (NB: imgui_impl_osx.mm is currently not as feature complete as other platforms back-ends.
    You may prefer to use the GLFW Or SDL back-ends, which will also support Windows and Linux.)
 example_empscripten:
    Emcripten + SDL2 + OpenGL3+/ES2/ES3 example.
    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
    Note that other examples based on SDL or GLFW + OpenGL could easily be modified to work with Emscripten.
    We provide this to make the Emscripten differences obvious, and have them not pollute all other examples.
 example_glfw_metal/
    GLFW (Mac) + Metal example.
    = main.mm + imgui_impl_glfw.cpp + imgui_impl_metal.mm
 example_glfw_opengl2/
    GLFW + OpenGL2 example (legacy, fixed pipeline).
    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp
    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
    **Prefer using OPENGL3 code (with gl3w/glew/glad/glbinding, you can replace the OpenGL function loader)**
    This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
    make things more complicated, will require your code to reset many OpenGL attributes to their initial
    state, and might confuse your GPU driver. One star, not recommended.
 example_glfw_opengl3/
    GLFW (Win32, Mac, Linux) + OpenGL3+/ES2/ES3 example (programmable pipeline).
    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp
    This uses more modern OpenGL calls and custom shaders.
    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
    (Please be mindful that accessing OpenGL3+ functions requires a function loader, which are a frequent
    source for confusion for new users. We use a loader in imgui_impl_opengl3.cpp which may be different
    from the one your app normally use. Read imgui_impl_opengl3.h for details and how to change it.)
 example_glfw_vulkan/
    GLFW (Win32, Mac, Linux) + Vulkan example.
    = main.cpp + imgui_impl_glfw.cpp + imgui_impl_vulkan.cpp
    This is quite long and tedious, because: Vulkan.
    For this example, the main.cpp file exceptionally use helpers function from imgui_impl_vulkan.h/cpp.
 example_glut_opengl2/
    GLUT (e.g., FreeGLUT on Linux/Windows, GLUT framework on OSX) + OpenGL2.
    = main.cpp + imgui_impl_glut.cpp + imgui_impl_opengl2.cpp
    Note that GLUT/FreeGLUT is largely obsolete software, prefer using GLFW or SDL.
 example_marmalade/
    Marmalade example using IwGx.
    = main.cpp + imgui_impl_marmalade.cpp
 example_null
    Null example, compile and link imgui, create context, run headless with no inputs and no graphics output.
    = main.cpp
    This is used to quickly test compilation of core imgui files in as many setups as possible.
    Because this application doesn't create a window nor a graphic context, there's no graphics output.
 example_sdl_directx11/
    SDL2 + DirectX11 example, Windows only.
    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_dx11.cpp
    This to demonstrate usage of DirectX with SDL.
 example_sdl_metal/
    SDL2 (Mac) + Metal example.
    = main.mm + imgui_impl_sdl.cpp + imgui_impl_metal.mm
 example_sdl_opengl2/
    SDL2 (Win32, Mac, Linux etc.) + OpenGL example (legacy, fixed pipeline).
    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl2.cpp
    **DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
    **Prefer using OPENGL3 code (with gl3w/glew/glad/glbinding, you can replace the OpenGL function loader)**
    This code is mostly provided as a reference to learn about Dear ImGui integration, because it is shorter.
    If your code is using GL3+ context or any semi modern OpenGL calls, using this renderer is likely to
    make things more complicated, will require your code to reset many OpenGL attributes to their initial
    state, and might confuse your GPU driver. One star, not recommended.
 example_sdl_opengl3/
    SDL2 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example.
    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp
    This uses more modern OpenGL calls and custom shaders.
    Prefer using that if you are using modern OpenGL in your application (anything with shaders).
    (Please be mindful that accessing OpenGL3+ functions requires a function loader, which are a frequent
    source for confusion for new users. We use a loader in imgui_impl_opengl3.cpp which may be different
    from the one your app normally use. Read imgui_impl_opengl3.h for details and how to change it.)
 example_sdl_vulkan/
    SDL2 (Win32, Mac, Linux, etc.) + Vulkan example.
    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_vulkan.cpp
    This is quite long and tedious, because: Vulkan.
    For this example, the main.cpp file exceptionally use helpers function from imgui_impl_vulkan.h/cpp.
 example_win32_directx9/
    DirectX9 example, Windows only.
-	
+    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx9.cpp
-directx11_example/
+
 example_win32_directx10/
    DirectX10 example, Windows only.
    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx10.cpp
 example_win32_directx11/
    DirectX11 example, Windows only.
-    This is quite long and tedious, because: DirectX11.
+    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx11.cpp
-	
+
 example_win32_directx12/
    DirectX12 example, Windows only.
    = main.cpp + imgui_impl_win32.cpp + imgui_impl_dx12.cpp
    This is quite long and tedious, because: DirectX12.
--- a/examples/directx11_example/imgui_impl_dx11.cpp
+++ b/examples/directx11_example/imgui_impl_dx11.cpp
@ -1,472 +0,0 @@
 // ImGui Win32 + DirectX11 binding
 // https://github.com/ocornut/imgui
 #include <imgui.h>
 #include "imgui_impl_dx11.h"
 // DirectX
 #include <d3d11.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 ID3D11Device*            g_pd3dDevice = NULL;
 static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
 static ID3D11Buffer*            g_pVB = NULL;
 static ID3D10Blob *             g_pVertexShaderBlob = NULL;
 static ID3D11VertexShader*      g_pVertexShader = NULL;
 static ID3D11InputLayout*       g_pInputLayout = NULL;
 static ID3D11Buffer*            g_pVertexConstantBuffer = NULL;
 static ID3D10Blob *             g_pPixelShaderBlob = NULL;
 static ID3D11PixelShader*       g_pPixelShader = NULL;
 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.
 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)
 static void ImGui_ImplDX11_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_count)
 {
    // 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++)
    {
        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();
    }
    g_pd3dDeviceContext->Unmap(g_pVB, 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)
            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] = 
        {
            { 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);
    }
    // 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);
    }
    // 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);
    // 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);
    // Render command lists
    int vtx_offset = 0;
    for (int n = 0; n < cmd_lists_count; n++)
    {
        const ImDrawList* cmd_list = cmd_lists[n];
        for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
        {
            const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
            if (pcmd->user_callback)
            {
                pcmd->user_callback(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);
            }
            vtx_offset += pcmd->vtx_count;
        }
    }
    // Restore modified state
    g_pd3dDeviceContext->IASetInputLayout(NULL);
    g_pd3dDeviceContext->PSSetShader(NULL, NULL, 0);
    g_pd3dDeviceContext->VSSetShader(NULL, NULL, 0);
 }
 LRESULT ImGui_ImplDX11_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_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_ImplDX11_CreateFontsTexture()
 {
    ImGuiIO& io = ImGui::GetIO();
    // Build
    unsigned char* pixels;
    int width, height;
    io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height);
    // Create DX11 texture
    {
        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;
        ID3D11Texture2D *pTexture = NULL;
        D3D11_SUBRESOURCE_DATA subResource;
        subResource.pSysMem = pixels;
        subResource.SysMemPitch = texDesc.Width * 4;
        subResource.SysMemSlicePitch = 0;
        g_pd3dDevice->CreateTexture2D(&texDesc, &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.MostDetailedMip = 0;
        g_pd3dDevice->CreateShaderResourceView(pTexture, &srvDesc, &g_pFontTextureView);
        pTexture->Release();
    }
    // Store our identifier
    io.Fonts->TexID = (void *)g_pFontTextureView;
    // 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);
    }
    // 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)
        ImGui_ImplDX11_InvalidateDeviceObjects();
    // Create the vertex shader
    {
        static const char* vertexShader = 
            "cbuffer vertexBuffer : register(c0) \
            {\
            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_5_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 },
            { "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)
            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);
        }
    }
    // 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_5_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)
            return false;
    }
    // Create the blending setup
    {
        D3D11_BLEND_DESC desc;
        ZeroMemory(&desc, sizeof(desc));
        desc.AlphaToCoverageEnable = false;
        desc.RenderTarget[0].BlendEnable = true;
        desc.RenderTarget[0].SrcBlend = D3D11_BLEND_SRC_ALPHA;
        desc.RenderTarget[0].DestBlend = D3D11_BLEND_INV_SRC_ALPHA;
        desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
        desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_INV_SRC_ALPHA;
        desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ZERO;
        desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
        desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
        g_pd3dDevice->CreateBlendState(&desc, &g_pBlendState);
    }
    // Create the rasterizer state
    {
        D3D11_RASTERIZER_DESC desc;
        ZeroMemory(&desc, sizeof(desc));
        desc.FillMode = D3D11_FILL_SOLID;
        desc.CullMode = D3D11_CULL_NONE;
        desc.ScissorEnable = true;
        desc.DepthClipEnable = true;
        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;
 }
 void    ImGui_ImplDX11_InvalidateDeviceObjects()
 {
    if (!g_pd3dDevice)
        return;
    if (g_pFontSampler) { g_pFontSampler->Release(); g_pFontSampler = NULL; }
    if (g_pFontTextureView) { g_pFontTextureView->Release(); ImGui::GetIO().Fonts->TexID = 0; }
    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_ImplDX11_Init(void* hwnd, ID3D11Device* device, ID3D11DeviceContext* device_context)
 {
    g_hWnd = (HWND)hwnd;
    g_pd3dDevice = device;
    g_pd3dDeviceContext = device_context;
    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_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_ImplDX11_RenderDrawLists;
    io.ImeWindowHandle = g_hWnd;
    return true;
 }
 void ImGui_ImplDX11_Shutdown()
 {
    ImGui_ImplDX11_InvalidateDeviceObjects();
    ImGui::Shutdown();
    g_pd3dDevice = NULL;
    g_pd3dDeviceContext = NULL;
    g_hWnd = (HWND)0;
 }
 void ImGui_ImplDX11_NewFrame()
 {
    if (!g_pVB)
        ImGui_ImplDX11_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.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();
 }
--- a/examples/directx11_example/imgui_impl_dx11.h
+++ b/examples/directx11_example/imgui_impl_dx11.h
@ -1,20 +0,0 @@
 // ImGui Win32 + DirectX11 binding
 // 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();
 // Use if you want to reset your rendering device without losing ImGui state.
 void        ImGui_ImplDX11_InvalidateDeviceObjects();
 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);
 */
--- a/examples/directx11_example/main.cpp
+++ b/examples/directx11_example/main.cpp
@ -1,216 +0,0 @@
 // ImGui - standalone example application for DirectX 11
 #include <imgui.h>
 #include "imgui_impl_dx11.h"
 #include <d3d11.h>
 #include <d3dcompiler.h>
 #define DIRECTINPUT_VERSION 0x0800
 #include <dinput.h>
 // Data
 static ID3D11Device*            g_pd3dDevice = NULL;
 static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
 static IDXGISwapChain*          g_pSwapChain = NULL;
 static ID3D11RenderTargetView*  g_mainRenderTargetView = NULL;
 void CreateRenderTarget()
 {
    DXGI_SWAP_CHAIN_DESC sd;
    g_pSwapChain->GetDesc(&sd);
    // Create the render target
    ID3D11Texture2D* pBackBuffer;               
    D3D11_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 = D3D11_RTV_DIMENSION_TEXTURE2D;
    g_pSwapChain->GetBuffer(0, __uuidof(ID3D11Texture2D), (LPVOID*)&pBackBuffer);
    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, &render_target_view_desc, &g_mainRenderTargetView);
    g_pd3dDeviceContext->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;
 #ifdef _DEBUG
    createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
 #endif
    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)
        return E_FAIL;
    // Setup rasterizer
    {
        D3D11_RASTERIZER_DESC RSDesc;
        memset(&RSDesc, 0, sizeof(D3D11_RASTERIZER_DESC));
        RSDesc.FillMode = D3D11_FILL_SOLID;
        RSDesc.CullMode = D3D11_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;
        ID3D11RasterizerState* pRState = NULL;
        g_pd3dDevice->CreateRasterizerState(&RSDesc, &pRState);
        g_pd3dDeviceContext->RSSetState(pRState);
        pRState->Release();
    }
    CreateRenderTarget();
    return S_OK;
 }
 void CleanupDeviceD3D()
 {
    CleanupRenderTarget();
    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
 }
 extern LRESULT ImGui_ImplDX11_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
    if (ImGui_ImplDX11_WndProcHandler(hWnd, msg, wParam, lParam))
        return true;
    switch (msg)
    {
    case WM_SIZE:
        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
        {
            ImGui_ImplDX11_InvalidateDeviceObjects();
            CleanupRenderTarget();
            g_pSwapChain->ResizeBuffers(0, (UINT)LOWORD(lParam), (UINT)HIWORD(lParam), DXGI_FORMAT_UNKNOWN, 0);
            CreateRenderTarget();
            ImGui_ImplDX11_CreateDeviceObjects();
        }
        return 0;
    case WM_SYSCOMMAND:
        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
            return 0;
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }
    return DefWindowProc(hWnd, msg, wParam, lParam);
 }
 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 };
    RegisterClassEx(&wc);
    HWND hwnd = CreateWindow(L"ImGui Example", L"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);
        return 1;
    }
    // Show the window
    ShowWindow(hwnd, SW_SHOWDEFAULT);
    UpdateWindow(hwnd);
    // Setup ImGui binding
    ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext);
    //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());
    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_ImplDX11_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_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_col);
        ImGui::Render();
        g_pSwapChain->Present(0, 0);
    }
    ImGui_ImplDX11_Shutdown();
    CleanupDeviceD3D();
    UnregisterClass(L"ImGui Example", wc.hInstance);
    return 0;
 }
--- a/examples/directx9_example/imgui_impl_dx9.cpp
+++ b/examples/directx9_example/imgui_impl_dx9.cpp
@ -1,293 +0,0 @@
 // ImGui Win32 + DirectX9 binding
 // https://github.com/ocornut/imgui
 #include <imgui.h>
 #include "imgui_impl_dx9.h"
 // DirectX
 #include <d3dx9.h>
 #define DIRECTINPUT_VERSION 0x0800
 #include <dinput.h>
 // Data
 static HWND                     g_hWnd = 0;
 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.
 struct CUSTOMVERTEX
 {
    D3DXVECTOR3 pos;
    D3DCOLOR    col;
    D3DXVECTOR2 uv;
 };
 #define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1)
 // 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)
 {
    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)
        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)
        return;
    for (int n = 0; n < cmd_lists_count; 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++)
        {
            vtx_dst->pos.x = vtx_src->pos.x;
            vtx_dst->pos.y = vtx_src->pos.y;
            vtx_dst->pos.z = 0.0f;
            vtx_dst->col = (vtx_src->col & 0xFF00FF00) | ((vtx_src->col & 0xFF0000)>>16) | ((vtx_src->col & 0xFF) << 16);     // RGBA --> ARGB for DirectX9
            vtx_dst->uv.x = vtx_src->uv.x;
            vtx_dst->uv.y = vtx_src->uv.y;
            vtx_dst++;
            vtx_src++;
        }
    }
    g_pVB->Unlock();
    g_pd3dDevice->SetStreamSource( 0, g_pVB, 0, sizeof( CUSTOMVERTEX ) );
    g_pd3dDevice->SetFVF( D3DFVF_CUSTOMVERTEX );
    // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing
    g_pd3dDevice->SetPixelShader( NULL );
    g_pd3dDevice->SetVertexShader( NULL );
    g_pd3dDevice->SetRenderState( D3DRS_CULLMODE, D3DCULL_NONE );
    g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, false );
    g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, false );
    g_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );
    g_pd3dDevice->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );
    g_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, false );
    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_ALPHAOP, D3DTOP_MODULATE );
    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
    g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
    g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR );
    g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR );
    // Setup orthographic projection matrix
    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);
    // Render command lists
    int vtx_offset = 0;
    for (int n = 0; n < cmd_lists_count; n++)
    {
        const ImDrawList* cmd_list = cmd_lists[n];
        for (size_t cmd_i = 0; cmd_i < cmd_list->commands.size(); cmd_i++)
        {
            const ImDrawCmd* pcmd = &cmd_list->commands[cmd_i];
            if (pcmd->user_callback)
            {
                pcmd->user_callback(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);
            }
            vtx_offset += pcmd->vtx_count;
        }
    }
 }
 LRESULT ImGui_ImplDX9_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_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;
 }
 bool    ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* 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_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_ImplDX9_RenderDrawLists;
    io.ImeWindowHandle = g_hWnd;
    return true;
 }
 void ImGui_ImplDX9_Shutdown()
 {
    ImGui_ImplDX9_InvalidateDeviceObjects();
    ImGui::Shutdown();
    g_pd3dDevice = NULL;
    g_hWnd = 0;
 }
 static void ImGui_ImplDX9_CreateFontsTexture()
 {
    ImGuiIO& io = ImGui::GetIO();
    // Build
    unsigned char* pixels;
    int width, height, bytes_per_pixel;
    io.Fonts->GetTexDataAsAlpha8(&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;
    }
    D3DLOCKED_RECT tex_locked_rect;
    if (pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK) 
    {	
        IM_ASSERT(0); 
        return; 
    }
    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);
    // Store our identifier
    io.Fonts->TexID = (void *)pTexture;
    // Cleanup (don't clear the input data if you want to append new fonts later)
    io.Fonts->ClearInputData();
    io.Fonts->ClearTexData();
 }
 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)
        return false;
    ImGui_ImplDX9_CreateFontsTexture();
    return true;
 }
 void ImGui_ImplDX9_InvalidateDeviceObjects()
 {
    if (!g_pd3dDevice)
        return;
    if (g_pVB)
    {
        g_pVB->Release();
        g_pVB = NULL;
    }
    if (LPDIRECT3DTEXTURE9 tex = (LPDIRECT3DTEXTURE9)ImGui::GetIO().Fonts->TexID)
    {
        tex->Release();
        ImGui::GetIO().Fonts->TexID = 0;
    }
 }
 void ImGui_ImplDX9_NewFrame()
 {
    if (!g_pVB)
        ImGui_ImplDX9_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.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();
 }
--- a/examples/directx9_example/imgui_impl_dx9.h
+++ b/examples/directx9_example/imgui_impl_dx9.h
@ -1,19 +0,0 @@
 // ImGui Win32 + DirectX9 binding
 // https://github.com/ocornut/imgui
 struct IDirect3DDevice9;
 bool        ImGui_ImplDX9_Init(void* hwnd, IDirect3DDevice9* device);
 void        ImGui_ImplDX9_Shutdown();
 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();
 // 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);
 */
--- a/examples/directx9_example/main.cpp
+++ b/examples/directx9_example/main.cpp
@ -1,152 +0,0 @@
 // ImGui - standalone example application for DirectX 9
 #include <imgui.h>
 #include "imgui_impl_dx9.h"
 #include <d3dx9.h>
 #define DIRECTINPUT_VERSION 0x0800
 #include <dinput.h>
 // Data
 static LPDIRECT3DDEVICE9        g_pd3dDevice = NULL;
 static D3DPRESENT_PARAMETERS    g_d3dpp;
 extern LRESULT ImGui_ImplDX9_WndProcHandler(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);
 LRESULT WINAPI WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
 {
    if (ImGui_ImplDX9_WndProcHandler(hWnd, msg, wParam, lParam))
        return true;
    switch (msg)
    {
    case WM_SIZE:
        if (g_pd3dDevice != NULL && wParam != SIZE_MINIMIZED)
        {
            ImGui_ImplDX9_InvalidateDeviceObjects();
            g_d3dpp.BackBufferWidth  = LOWORD(lParam);
            g_d3dpp.BackBufferHeight = HIWORD(lParam);
            HRESULT hr = g_pd3dDevice->Reset(&g_d3dpp);
            if (hr == D3DERR_INVALIDCALL)
                IM_ASSERT(0);
            ImGui_ImplDX9_CreateDeviceObjects();
        }
        return 0;
    case WM_SYSCOMMAND:
        if ((wParam & 0xfff0) == SC_KEYMENU) // Disable ALT application menu
            return 0;
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        return 0;
    }
    return DefWindowProc(hWnd, msg, wParam, lParam);
 }
 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 };
    RegisterClassEx(&wc);
    HWND hwnd = CreateWindow(L"ImGui Example", L"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);
        return 0;
    }
    ZeroMemory(&g_d3dpp, sizeof(g_d3dpp));
    g_d3dpp.Windowed = TRUE;
    g_d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    g_d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;
    g_d3dpp.EnableAutoDepthStencil = TRUE;
    g_d3dpp.AutoDepthStencilFormat = D3DFMT_D16;
    g_d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
    // Create the D3DDevice
    if (pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &g_d3dpp, &g_pd3dDevice) < 0)
    {
        pD3D->Release();
        UnregisterClass(L"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);
    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_ImplDX9_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);
            ImGui::ShowTestWindow(&show_test_window);
        }
        // Rendering
        g_pd3dDevice->SetRenderState(D3DRS_ZENABLE, false);
        g_pd3dDevice->SetRenderState(D3DRS_ALPHABLENDENABLE, false);
        g_pd3dDevice->SetRenderState(D3DRS_SCISSORTESTENABLE, false);
        D3DCOLOR clear_col_dx = D3DCOLOR_RGBA((int)(clear_col.x*255.0f), (int)(clear_col.y*255.0f), (int)(clear_col.z*255.0f), (int)(clear_col.w*255.0f));
        g_pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, clear_col_dx, 1.0f, 0);
        if (g_pd3dDevice->BeginScene() >= 0)
        {
            ImGui::Render();
            g_pd3dDevice->EndScene();
        }
        g_pd3dDevice->Present(NULL, NULL, NULL, NULL);
    }
    ImGui_ImplDX9_Shutdown();
    if (g_pd3dDevice) g_pd3dDevice->Release();
    if (pD3D) pD3D->Release();
    UnregisterClass(L"ImGui Example", wc.hInstance);
    return 0;
 }
--- a/examples/example_allegro5/README.md
+++ b/examples/example_allegro5/README.md
@ -0,0 +1,35 @@
 # Configuration
 Dear ImGui outputs 16-bit vertex indices by default.
 Allegro doesn't support them natively, so we have two solutions: convert the indices manually in imgui_impl_allegro5.cpp, or compile dear imgui with 32-bit indices.
 You can either modify imconfig.h that comes with Dear ImGui (easier), or set a C++ preprocessor option IMGUI_USER_CONFIG to find to a filename.
 We are providing `imconfig_allegro5.h` that enables 32-bit indices.
 Note that the back-end supports _BOTH_ 16-bit and 32-bit indices, but 32-bit indices will be slightly faster as they won't require a manual conversion.
 # How to Build
 ### On Ubuntu 14.04+ and macOS
 ```bash
 g++ -DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" -I .. -I ../.. main.cpp ../imgui_impl_allegro5.cpp ../../imgui*.cpp -lallegro -lallegro_main -lallegro_primitives -o allegro5_example
 ```
 On macOS, install Allegro with homebrew: `brew install allegro`.
 ### On Windows with Visual Studio's CLI
 You may install Allegro using vcpkg:
 ```
 git clone https://github.com/Microsoft/vcpkg
 cd vcpkg
 .\bootstrap-vcpkg.bat
 .\vcpkg install allegro5
 .\vcpkg integrate install    ; optional, automatically register include/libs in Visual Studio
 ```
 Build:
 ```
 set ALLEGRODIR=path_to_your_allegro5_folder
 cl /Zi /MD /I %ALLEGRODIR%\include /DIMGUI_USER_CONFIG=\"examples/example_allegro5/imconfig_allegro5.h\" /I .. /I ..\.. main.cpp ..\imgui_impl_allegro5.cpp ..\..\imgui*.cpp /link /LIBPATH:%ALLEGRODIR%\lib allegro-5.0.10-monolith-md.lib user32.lib
 ```
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--- a/examples/example_allegro5/imconfig_allegro5.h
+++ b/examples/example_allegro5/imconfig_allegro5.h
@ -0,0 +1,11 @@
 //-----------------------------------------------------------------------------
 // COMPILE-TIME OPTIONS FOR DEAR IMGUI ALLEGRO 5 EXAMPLE
 // See imconfig.h for the full template
 // Because Allegro doesn't support 16-bit vertex indices, we enable the compile-time option of imgui to use 32-bit indices
 //-----------------------------------------------------------------------------
 #pragma once
 // Use 32-bit vertex indices because Allegro doesn't support 16-bit ones
 // This allows us to avoid converting vertices format at runtime
 #define ImDrawIdx  int
--- a/examples/example_allegro5/main.cpp
+++ b/examples/example_allegro5/main.cpp
@ -0,0 +1,135 @@
 // dear imgui: standalone example application for Allegro 5
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 #include <stdint.h>
 #include <allegro5/allegro.h>
 #include <allegro5/allegro_primitives.h>
 #include "imgui.h"
 #include "imgui_impl_allegro5.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, "Dear 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 Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplAllegro5_Init(display);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    bool running = true;
    while (running)
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        ALLEGRO_EVENT ev;
        while (al_get_next_event(queue, &ev))
        {
            ImGui_ImplAllegro5_ProcessEvent(&ev);
            if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
                running = false;
            if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
            {
                ImGui_ImplAllegro5_InvalidateDeviceObjects();
                al_acknowledge_resize(display);
                ImGui_ImplAllegro5_CreateDeviceObjects();
            }
        }
        // Start the Dear ImGui frame
        ImGui_ImplAllegro5_NewFrame();
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        al_clear_to_color(al_map_rgba_f(clear_color.x, clear_color.y, clear_color.z, clear_color.w));
        ImGui_ImplAllegro5_RenderDrawData(ImGui::GetDrawData());
        al_flip_display();
    }
    // Cleanup
    ImGui_ImplAllegro5_Shutdown();
    ImGui::DestroyContext();
    al_destroy_event_queue(queue);
    al_destroy_display(display);
    return 0;
 }
--- a/examples/example_apple_metal/README.md
+++ b/examples/example_apple_metal/README.md
@ -0,0 +1,8 @@
 # iOS / OSX Metal example
 ## Introduction
 This example shows how to integrate Dear ImGui with Metal. It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
 (NB: you may still want to use GLFW or SDL which will also support Windows, Linux along with OSX.)
--- a/examples/example_apple_metal/Shared/AppDelegate.h
+++ b/examples/example_apple_metal/Shared/AppDelegate.h
@ -0,0 +1,18 @@
 #import <TargetConditionals.h>
 #if TARGET_OS_IPHONE
 #import <UIKit/UIKit.h>
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@end
 #else
 #import <Cocoa/Cocoa.h>
@interface AppDelegate : NSObject <NSApplicationDelegate>
@end
 #endif
--- a/examples/example_apple_metal/Shared/AppDelegate.m
+++ b/examples/example_apple_metal/Shared/AppDelegate.m
@ -0,0 +1,11 @@
 #import "AppDelegate.h"
@implementation AppDelegate
 #if TARGET_OS_OSX
 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
    return YES;
 }
 #endif
@end
--- a/examples/example_apple_metal/Shared/Renderer.h
+++ b/examples/example_apple_metal/Shared/Renderer.h
@ -0,0 +1,8 @@
 #import <MetalKit/MetalKit.h>
@interface Renderer : NSObject <MTKViewDelegate>
 -(nonnull instancetype)initWithView:(nonnull MTKView *)view;
@end
--- a/examples/example_apple_metal/Shared/Renderer.mm
+++ b/examples/example_apple_metal/Shared/Renderer.mm
@ -0,0 +1,129 @@
 #import "Renderer.h"
 #import <Metal/Metal.h>
 #include "imgui.h"
 #include "imgui_impl_metal.h"
 #if TARGET_OS_OSX
 #include "imgui_impl_osx.h"
 #endif
@interface Renderer ()
@property (nonatomic, strong) id <MTLDevice> device;
@property (nonatomic, strong) id <MTLCommandQueue> commandQueue;
@end
@implementation Renderer
 -(nonnull instancetype)initWithView:(nonnull MTKView *)view;
 {
    self = [super init];
    if(self)
    {
        _device = view.device;
        _commandQueue = [_device newCommandQueue];
        IMGUI_CHECKVERSION();
        ImGui::CreateContext();
        ImGui::StyleColorsDark();
        ImGui_ImplMetal_Init(_device);
    }
    return self;
 }
 - (void)drawInMTKView:(MTKView *)view
 {
    ImGuiIO &io = ImGui::GetIO();
    io.DisplaySize.x = view.bounds.size.width;
    io.DisplaySize.y = view.bounds.size.height;
 #if TARGET_OS_OSX
    CGFloat framebufferScale = view.window.screen.backingScaleFactor ?: NSScreen.mainScreen.backingScaleFactor;
 #else
    CGFloat framebufferScale = view.window.screen.scale ?: UIScreen.mainScreen.scale;
 #endif
    io.DisplayFramebufferScale = ImVec2(framebufferScale, framebufferScale);
    io.DeltaTime = 1 / float(view.preferredFramesPerSecond ?: 60);
    id<MTLCommandBuffer> commandBuffer = [self.commandQueue commandBuffer];
    static bool show_demo_window = true;
    static bool show_another_window = false;
    static float clear_color[4] = { 0.28f, 0.36f, 0.5f, 1.0f };
    MTLRenderPassDescriptor *renderPassDescriptor = view.currentRenderPassDescriptor;
    if (renderPassDescriptor != nil)
    {
        renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
        // Here, you could do additional rendering work, including other passes as necessary.
        id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
        [renderEncoder pushDebugGroup:@"ImGui demo"];
        // Start the Dear ImGui frame
        ImGui_ImplMetal_NewFrame(renderPassDescriptor);
 #if TARGET_OS_OSX
        ImGui_ImplOSX_NewFrame(view);
 #endif
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        ImDrawData *drawData = ImGui::GetDrawData();
        ImGui_ImplMetal_RenderDrawData(drawData, commandBuffer, renderEncoder);
        [renderEncoder popDebugGroup];
        [renderEncoder endEncoding];
        [commandBuffer presentDrawable:view.currentDrawable];
    }
    [commandBuffer commit];
 }
 - (void)mtkView:(MTKView *)view drawableSizeWillChange:(CGSize)size
 {
 }
@end
--- a/examples/example_apple_metal/Shared/ViewController.h
+++ b/examples/example_apple_metal/Shared/ViewController.h
@ -0,0 +1,19 @@
 #import <Metal/Metal.h>
 #import <MetalKit/MetalKit.h>
 #import "Renderer.h"
 #if TARGET_OS_IPHONE
 #import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
 #else
 #import <Cocoa/Cocoa.h>
@interface ViewController : NSViewController
@end
 #endif
--- a/examples/example_apple_metal/Shared/ViewController.mm
+++ b/examples/example_apple_metal/Shared/ViewController.mm
@ -0,0 +1,129 @@
 #import "ViewController.h"
 #import "Renderer.h"
 #include "imgui.h"
 #if TARGET_OS_OSX
 #include "imgui_impl_osx.h"
 #endif
@interface ViewController ()
@property (nonatomic, readonly) MTKView *mtkView;
@property (nonatomic, strong) Renderer *renderer;
@end
@implementation ViewController
 - (MTKView *)mtkView {
    return (MTKView *)self.view;
 }
 - (void)viewDidLoad
 {
    [super viewDidLoad];
    self.mtkView.device = MTLCreateSystemDefaultDevice();
    if (!self.mtkView.device) {
        NSLog(@"Metal is not supported");
        abort();
    }
    self.renderer = [[Renderer alloc] initWithView:self.mtkView];
    [self.renderer mtkView:self.mtkView drawableSizeWillChange:self.mtkView.bounds.size];
    self.mtkView.delegate = self.renderer;
 #if TARGET_OS_OSX
    // Add a tracking area in order to receive mouse events whenever the mouse is within the bounds of our view
    NSTrackingArea *trackingArea = [[NSTrackingArea alloc] initWithRect:NSZeroRect
                                                                options:NSTrackingMouseMoved | NSTrackingInVisibleRect | NSTrackingActiveAlways
                                                                  owner:self
                                                               userInfo:nil];
    [self.view addTrackingArea:trackingArea];
    // If we want to receive key events, we either need to be in the responder chain of the key view,
    // or else we can install a local monitor. The consequence of this heavy-handed approach is that
    // we receive events for all controls, not just Dear ImGui widgets. If we had native controls in our
    // window, we'd want to be much more careful than just ingesting the complete event stream, though we
    // do make an effort to be good citizens by passing along events when Dear ImGui doesn't want to capture.
    NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventTypeScrollWheel;
    [NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event) {
        BOOL wantsCapture = ImGui_ImplOSX_HandleEvent(event, self.view);
        if (event.type == NSEventTypeKeyDown && wantsCapture) {
            return nil;
        } else {
            return event;
        }
    }];
    ImGui_ImplOSX_Init();
 #endif
 }
 #if TARGET_OS_OSX
 - (void)mouseMoved:(NSEvent *)event {
    ImGui_ImplOSX_HandleEvent(event, self.view);
 }
 - (void)mouseDown:(NSEvent *)event {
    ImGui_ImplOSX_HandleEvent(event, self.view);
 }
 - (void)mouseUp:(NSEvent *)event {
    ImGui_ImplOSX_HandleEvent(event, self.view);
 }
 - (void)mouseDragged:(NSEvent *)event {
    ImGui_ImplOSX_HandleEvent(event, self.view);
 }
 - (void)scrollWheel:(NSEvent *)event {
    ImGui_ImplOSX_HandleEvent(event, self.view);
 }
 #elif TARGET_OS_IOS
 // This touch mapping is super cheesy/hacky. We treat any touch on the screen
 // as if it were a depressed left mouse button, and we don't bother handling
 // multitouch correctly at all. This causes the "cursor" to behave very erratically
 // when there are multiple active touches. But for demo purposes, single-touch
 // interaction actually works surprisingly well.
 - (void)updateIOWithTouchEvent:(UIEvent *)event {
    UITouch *anyTouch = event.allTouches.anyObject;
    CGPoint touchLocation = [anyTouch locationInView:self.view];
    ImGuiIO &io = ImGui::GetIO();
    io.MousePos = ImVec2(touchLocation.x, touchLocation.y);
    BOOL hasActiveTouch = NO;
    for (UITouch *touch in event.allTouches) {
        if (touch.phase != UITouchPhaseEnded && touch.phase != UITouchPhaseCancelled) {
            hasActiveTouch = YES;
            break;
        }
    }
    io.MouseDown[0] = hasActiveTouch;
 }
 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [self updateIOWithTouchEvent:event];
 }
 - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [self updateIOWithTouchEvent:event];
 }
 - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [self updateIOWithTouchEvent:event];
 }
 - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
    [self updateIOWithTouchEvent:event];
 }
 #endif
@end
--- a/examples/example_apple_metal/Shared/main.m
+++ b/examples/example_apple_metal/Shared/main.m
@ -0,0 +1,22 @@
 #import <TargetConditionals.h>
 #if TARGET_OS_IPHONE
 #import <UIKit/UIKit.h>
 #import "AppDelegate.h"
 int main(int argc, char * argv[]) {
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
 }
 #else
 #import <Cocoa/Cocoa.h>
 int main(int argc, const char * argv[]) {
    return NSApplicationMain(argc, argv);
 }
 #endif
--- a/examples/example_apple_metal/example_apple_metal.xcodeproj/project.pbxproj
+++ b/examples/example_apple_metal/example_apple_metal.xcodeproj/project.pbxproj
@ -0,0 +1,539 @@
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        <!--Window Controller-->
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--- a/examples/example_apple_metal/macOS/Info-macOS.plist
+++ b/examples/example_apple_metal/macOS/Info-macOS.plist
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 	<key>NSHumanReadableCopyright</key>
 	<string>Copyright © 2018 Warren Moore. All rights reserved.</string>
 	<key>NSMainStoryboardFile</key>
 	<string>Main</string>
 	<key>NSPrincipalClass</key>
 	<string>NSApplication</string>
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 </plist>
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+++ b/examples/example_apple_opengl2/main.mm
@ -0,0 +1,279 @@
 // dear imgui: standalone example application for OSX + OpenGL2, using legacy fixed pipeline
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 #include "imgui.h"
 #include "../imgui_impl_osx.h"
 #include "../imgui_impl_opengl2.h"
 #include <stdio.h>
 #import <Cocoa/Cocoa.h>
 #import <OpenGL/gl.h>
 #import <OpenGL/glu.h>
 //-----------------------------------------------------------------------------------
 // ImGuiExampleView
 //-----------------------------------------------------------------------------------
@interface ImGuiExampleView : NSOpenGLView
 {
    NSTimer*    animationTimer;
 }
@end
@implementation ImGuiExampleView
 -(void)animationTimerFired:(NSTimer*)timer
 {
    [self setNeedsDisplay:YES];
 }
 -(void)prepareOpenGL
 {
    [super prepareOpenGL];
 #ifndef DEBUG
    GLint swapInterval = 1;
    [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
    if (swapInterval == 0)
        NSLog(@"Error: Cannot set swap interval.");
 #endif
 }
 -(void)updateAndDrawDemoView
 {
    // Start the Dear ImGui frame
 	ImGui_ImplOpenGL2_NewFrame();
 	ImGui_ImplOSX_NewFrame(self);
    ImGui::NewFrame();
    // Global data for the demo
    static bool show_demo_window = true;
    static bool show_another_window = false;
    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
    if (show_demo_window)
        ImGui::ShowDemoWindow(&show_demo_window);
    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
    {
        static float f = 0.0f;
        static int counter = 0;
        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
        ImGui::Checkbox("Another Window", &show_another_window);
        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
            counter++;
        ImGui::SameLine();
        ImGui::Text("counter = %d", counter);
        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
        ImGui::End();
    }
    // 3. Show another simple window.
    if (show_another_window)
    {
        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
        ImGui::Text("Hello from another window!");
        if (ImGui::Button("Close Me"))
            show_another_window = false;
        ImGui::End();
    }
 	// Rendering
 	ImGui::Render();
 	[[self openGLContext] makeCurrentContext];
    ImDrawData* draw_data = ImGui::GetDrawData();
    GLsizei width  = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
    GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
    glViewport(0, 0, width, height);
 	glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
 	glClear(GL_COLOR_BUFFER_BIT);
 	ImGui_ImplOpenGL2_RenderDrawData(draw_data);
    // Present
    [[self openGLContext] flushBuffer];
    if (!animationTimer)
        animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES];
 }
 -(void)reshape
 {
    [[self openGLContext] update];
    [self updateAndDrawDemoView];
 }
 -(void)drawRect:(NSRect)bounds
 {
    [self updateAndDrawDemoView];
 }
 -(BOOL)acceptsFirstResponder
 {
    return (YES);
 }
 -(BOOL)becomeFirstResponder
 {
    return (YES);
 }
 -(BOOL)resignFirstResponder
 {
    return (YES);
 }
 -(void)dealloc
 {
    animationTimer = nil;
 }
 // Forward Mouse/Keyboard events to dear imgui OSX back-end. It returns true when imgui is expecting to use the event.
 -(void)keyUp:(NSEvent *)event           { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)keyDown:(NSEvent *)event         { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)flagsChanged:(NSEvent *)event    { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)mouseDown:(NSEvent *)event       { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)mouseUp:(NSEvent *)event         { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)mouseMoved:(NSEvent *)event      { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)mouseDragged:(NSEvent *)event    { ImGui_ImplOSX_HandleEvent(event, self); }
 -(void)scrollWheel:(NSEvent *)event     { ImGui_ImplOSX_HandleEvent(event, self); }
@end
 //-----------------------------------------------------------------------------------
 // ImGuiExampleAppDelegate
 //-----------------------------------------------------------------------------------
@interface ImGuiExampleAppDelegate : NSObject <NSApplicationDelegate>
@property (nonatomic, readonly) NSWindow* window;
@end
@implementation ImGuiExampleAppDelegate
@synthesize window = _window;
 -(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication
 {
    return YES;
 }
 -(NSWindow*)window
 {
    if (_window != nil)
        return (_window);
    NSRect viewRect = NSMakeRect(100.0, 100.0, 100.0 + 1280.0, 100 + 720.0);
    _window = [[NSWindow alloc] initWithContentRect:viewRect styleMask:NSWindowStyleMaskTitled|NSWindowStyleMaskMiniaturizable|NSWindowStyleMaskResizable|NSWindowStyleMaskClosable backing:NSBackingStoreBuffered defer:YES];
    [_window setTitle:@"Dear ImGui OSX+OpenGL2 Example"];
    [_window setAcceptsMouseMovedEvents:YES];
    [_window setOpaque:YES];
    [_window makeKeyAndOrderFront:NSApp];
    return (_window);
 }
 -(void)setupMenu
 {
 	NSMenu* mainMenuBar = [[NSMenu alloc] init];
    NSMenu* appMenu;
    NSMenuItem* menuItem;
    appMenu = [[NSMenu alloc] initWithTitle:@"Dear ImGui OSX+OpenGL2 Example"];
    menuItem = [appMenu addItemWithTitle:@"Quit Dear ImGui OSX+OpenGL2 Example" action:@selector(terminate:) keyEquivalent:@"q"];
    [menuItem setKeyEquivalentModifierMask:NSEventModifierFlagCommand];
    menuItem = [[NSMenuItem alloc] init];
    [menuItem setSubmenu:appMenu];
    [mainMenuBar addItem:menuItem];
    appMenu = nil;
    [NSApp setMainMenu:mainMenuBar];
 }
 -(void)dealloc
 {
    _window = nil;
 }
 -(void)applicationDidFinishLaunching:(NSNotification *)aNotification
 {
 	// Make the application a foreground application (else it won't receive keyboard events)
 	ProcessSerialNumber psn = {0, kCurrentProcess};
 	TransformProcessType(&psn, kProcessTransformToForegroundApplication);
 	// Menu
    [self setupMenu];
    NSOpenGLPixelFormatAttribute attrs[] =
    {
        NSOpenGLPFADoubleBuffer,
        NSOpenGLPFADepthSize, 32,
        0
    };
    NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
    ImGuiExampleView* view = [[ImGuiExampleView alloc] initWithFrame:self.window.frame pixelFormat:format];
    format = nil;
 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
    if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
        [view setWantsBestResolutionOpenGLSurface:YES];
 #endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
    [self.window setContentView:view];
    if ([view openGLContext] == nil)
        NSLog(@"No OpenGL Context!");
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplOSX_Init();
    ImGui_ImplOpenGL2_Init();
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
 }
@end
 int main(int argc, const char* argv[])
 {
 	@autoreleasepool
 	{
 		NSApp = [NSApplication sharedApplication];
 		ImGuiExampleAppDelegate* delegate = [[ImGuiExampleAppDelegate alloc] init];
 		[[NSApplication sharedApplication] setDelegate:delegate];
 		[NSApp run];
 	}
 	return NSApplicationMain(argc, argv);
 }
--- a/examples/example_emscripten/Makefile
+++ b/examples/example_emscripten/Makefile
@ -0,0 +1,84 @@
 #
 # Makefile to use with emscripten
 # See https://emscripten.org/docs/getting_started/downloads.html
 # for installation instructions.
 #
 # This Makefile assumes you have loaded emscripten's environment.
 # (On Windows, you may need to execute emsdk_env.bat or encmdprompt.bat ahead)
 #
 # Running `make` will produce three files:
 #  - example_emscripten.html
 #  - example_emscripten.js
 #  - example_emscripten.wasm
 #
 # All three are needed to run the demo.
 CC = emcc
 CXX = em++
 EXE = example_emscripten.html
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 ##---------------------------------------------------------------------
 ## EMSCRIPTEN OPTIONS
 ##---------------------------------------------------------------------
 EMS += -s USE_SDL=2 -s WASM=1
 EMS += -s ALLOW_MEMORY_GROWTH=1
 EMS += -s DISABLE_EXCEPTION_CATCHING=1 -s NO_EXIT_RUNTIME=0
 EMS += -s ASSERTIONS=1
 # Uncomment next line to fix possible rendering bugs with Emscripten version older then 1.39.0 (https://github.com/ocornut/imgui/issues/2877)
 #EMS += -s BINARYEN_TRAP_MODE=clamp
 #EMS += -s SAFE_HEAP=1    ## Adds overhead
 # Emscripten allows preloading a file or folder to be accessible at runtime.
 # The Makefile for this example project suggests embedding the misc/fonts/ folder into our application, it will then be accessible as "/fonts"
 # See documentation for more details: https://emscripten.org/docs/porting/files/packaging_files.html
 # (Default value is 0. Set to 1 to enable file-system and include the misc/fonts/ folder as part of the build.)
 USE_FILE_SYSTEM ?= 0
 ifeq ($(USE_FILE_SYSTEM), 0)
 EMS += -s NO_FILESYSTEM=1 -DIMGUI_DISABLE_FILE_FUNCTIONS
 endif
 ifeq ($(USE_FILE_SYSTEM), 1)
 LDFLAGS += --no-heap-copy --preload-file ../../misc/fonts@/fonts
 endif
 ##---------------------------------------------------------------------
 ## FINAL BUILD FLAGS
 ##---------------------------------------------------------------------
 CPPFLAGS += -I../ -I../../
 #CPPFLAGS += -g
 CPPFLAGS += -Wall -Wformat -Os
 CPPFLAGS += $(EMS)
 LIBS += $(EMS)
 LDFLAGS += --shell-file shell_minimal.html
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c -o $@ $<
 %.o:../libs/gl3w/GL/%.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(EXE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(LIBS) $(LDFLAGS)
 clean:
 	rm -f $(EXE) $(OBJS) *.js *.wasm *.wasm.pre
--- a/examples/example_emscripten/README.md
+++ b/examples/example_emscripten/README.md
@ -0,0 +1,12 @@
 # How to Build
 - You need to install Emscripten from https://emscripten.org/docs/getting_started/downloads.html, and have the environment variables set, as described in https://emscripten.org/docs/getting_started/downloads.html#installation-instructions
 - Depending on your configuration, in Windows you may need to run `emsdk/emsdk_env.bat` in your console to access the Emscripten command-line tools.
 - Then build using `make` while in the `example_emscripten/` directory.
 - Note that Emscripten 1.39.0 (October 2019) obsoleted the `BINARYEN_TRAP_MODE=clamp` compilation flag which was required with version older than 1.39.0 to avoid rendering artefacts. See [#2877](https://github.com/ocornut/imgui/issues/2877) for details. If you use an older version, uncomment this line in the Makefile:
 `#EMS += -s BINARYEN_TRAP_MODE=clamp`
--- a/examples/example_emscripten/main.cpp
+++ b/examples/example_emscripten/main.cpp
@ -0,0 +1,173 @@
 // dear imgui: standalone example application for Emscripten, using SDL2 + OpenGL3
 // This is mostly the same code as the SDL2 + OpenGL3 example, simply with the modifications needed to run on Emscripten.
 // It is possible to combine both code into a single source file that will compile properly on Desktop and using Emscripten.
 // See https://github.com/ocornut/imgui/pull/2492 as an example on how to do just that.
 //
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (Emscripten is a C++-to-javascript compiler, used to publish executables for the web. See https://emscripten.org/)
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_opengl3.h"
 #include <stdio.h>
 #include <emscripten.h>
 #include <SDL.h>
 #include <SDL_opengles2.h>
 // Emscripten requires to have full control over the main loop. We're going to store our SDL book-keeping variables globally.
 // Having a single function that acts as a loop prevents us to store state in the stack of said function. So we need some location for this.
 SDL_Window*     g_Window = NULL;
 SDL_GLContext   g_GLContext = NULL;
 // For clarity, our main loop code is declared at the end.
 void main_loop(void*);
 int main(int, char**)
 {
    // Setup SDL
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
    {
        printf("Error: %s\n", SDL_GetError());
        return -1;
    }
    // For the browser using Emscripten, we are going to use WebGL1 with GL ES2. See the Makefile. for requirement details.
    // It is very likely the generated file won't work in many browsers. Firefox is the only sure bet, but I have successfully
    // run this code on Chrome for Android for example.
    const char* glsl_version = "#version 100";
    //const char* glsl_version = "#version 300 es";
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
    // Create window with graphics context
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
    SDL_DisplayMode current;
    SDL_GetCurrentDisplayMode(0, &current);
    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
    g_Window = SDL_CreateWindow("Dear ImGui Emscripten example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
    g_GLContext = SDL_GL_CreateContext(g_Window);
    if (!g_GLContext)
    {
        fprintf(stderr, "Failed to initialize WebGL context!\n");
        return 1;
    }
    SDL_GL_SetSwapInterval(1); // Enable vsync
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // For an Emscripten build we are disabling file-system access, so let's not attempt to do a fopen() of the imgui.ini file.
    // You may manually call LoadIniSettingsFromMemory() to load settings from your own storage.
    io.IniFilename = NULL;
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplSDL2_InitForOpenGL(g_Window, g_GLContext);
    ImGui_ImplOpenGL3_Init(glsl_version);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    // - Emscripten allows preloading a file or folder to be accessible at runtime. See Makefile for details.
    //io.Fonts->AddFontDefault();
 #ifndef IMGUI_DISABLE_FILE_FUNCTIONS
    io.Fonts->AddFontFromFileTTF("fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("fonts/ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
 #endif
    // This function call won't return, and will engage in an infinite loop, processing events from the browser, and dispatching them.
    emscripten_set_main_loop_arg(main_loop, NULL, 0, true);
 }
 void main_loop(void* arg)
 {
    ImGuiIO& io = ImGui::GetIO();
    IM_UNUSED(arg); // We can pass this argument as the second parameter of emscripten_set_main_loop_arg(), but we don't use that.
    // Our state (make them static = more or less global) as a convenience to keep the example terse.
    static bool show_demo_window = true;
    static bool show_another_window = false;
    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Poll and handle events (inputs, window resize, etc.)
    // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
    // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
    // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
    // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
    SDL_Event event;
    while (SDL_PollEvent(&event))
    {
        ImGui_ImplSDL2_ProcessEvent(&event);
        // Capture events here, based on io.WantCaptureMouse and io.WantCaptureKeyboard
    }
    // Start the Dear ImGui frame
    ImGui_ImplOpenGL3_NewFrame();
    ImGui_ImplSDL2_NewFrame(g_Window);
    ImGui::NewFrame();
    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
    if (show_demo_window)
        ImGui::ShowDemoWindow(&show_demo_window);
    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
    {
        static float f = 0.0f;
        static int counter = 0;
        ImGui::Begin("Hello, world!");                                // Create a window called "Hello, world!" and append into it.
        ImGui::Text("This is some useful text.");                     // Display some text (you can use a format strings too)
        ImGui::Checkbox("Demo Window", &show_demo_window);            // Edit bools storing our window open/close state
        ImGui::Checkbox("Another Window", &show_another_window);
        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);                  // Edit 1 float using a slider from 0.0f to 1.0f
        ImGui::ColorEdit3("clear color", (float*)&clear_color);       // Edit 3 floats representing a color
        if (ImGui::Button("Button"))                                  // Buttons return true when clicked (most widgets return true when edited/activated)
            counter++;
        ImGui::SameLine();
        ImGui::Text("counter = %d", counter);
        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
        ImGui::End();
    }
    // 3. Show another simple window.
    if (show_another_window)
    {
        ImGui::Begin("Another Window", &show_another_window);         // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
        ImGui::Text("Hello from another window!");
        if (ImGui::Button("Close Me"))
            show_another_window = false;
        ImGui::End();
    }
    // Rendering
    ImGui::Render();
    SDL_GL_MakeCurrent(g_Window, g_GLContext);
    glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
    glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
    glClear(GL_COLOR_BUFFER_BIT);
    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
    SDL_GL_SwapWindow(g_Window);
 }
--- a/examples/example_emscripten/shell_minimal.html
+++ b/examples/example_emscripten/shell_minimal.html
@ -0,0 +1,64 @@
 <!doctype html>
 <html lang="en-us">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
    <title>Dear ImGui Emscripten example</title>
    <style>
        body { margin: 0; background-color: black }
        .emscripten {
            position: absolute;
            top: 0px;
            left: 0px;
            margin: 0px;
            border: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            display: block;
            image-rendering: optimizeSpeed;
            image-rendering: -moz-crisp-edges;
            image-rendering: -o-crisp-edges;
            image-rendering: -webkit-optimize-contrast;
            image-rendering: optimize-contrast;
            image-rendering: crisp-edges;
            image-rendering: pixelated;
            -ms-interpolation-mode: nearest-neighbor;
        }
    </style>
  </head>
  <body>
    <canvas class="emscripten" id="canvas" oncontextmenu="event.preventDefault()"></canvas>
    <script type='text/javascript'>
      var Module = {
        preRun: [],
        postRun: [],
        print: (function() {
            return function(text) {
                text = Array.prototype.slice.call(arguments).join(' ');
                console.log(text);
            };
        })(),
        printErr: function(text) {
            text = Array.prototype.slice.call(arguments).join(' ');
            console.error(text);
        },
        canvas: (function() {
            var canvas = document.getElementById('canvas');
            //canvas.addEventListener("webglcontextlost", function(e) { alert('FIXME: WebGL context lost, please reload the page'); e.preventDefault(); }, false);
            return canvas;
        })(),
        setStatus: function(text) {
            console.log("status: " + text);
        },
        monitorRunDependencies: function(left) {
            // no run dependencies to log
        }
      };
      window.onerror = function() {
        console.log("onerror: " + event);
      };
    </script>
    {{{ SCRIPT }}}
  </body>
 </html>
--- a/examples/example_glfw_metal/Makefile
+++ b/examples/example_glfw_metal/Makefile
@ -0,0 +1,44 @@
 #
 # You will need GLFW (http://www.glfw.org):
 #   brew install glfw
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_glfw_metal
 SOURCES = main.mm
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_metal.mm
 SOURCES += ../../imgui.cpp ../../imgui_widgets.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 LIBS = -framework Metal -framework MetalKit -framework Cocoa -framework IOKit -framework CoreVideo -framework QuartzCore
 LIBS += -L/usr/local/lib -lglfw
 CXXFLAGS = -I../ -I../../ -I/usr/local/include
 CXXFLAGS += -Wall -Wformat
 CFLAGS = $(CXXFLAGS)
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.mm
 	$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
 %.o:%.mm
 	$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
 all: $(EXE)
 	@echo Build complete
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_glfw_metal/main.mm
+++ b/examples/example_glfw_metal/main.mm
@ -0,0 +1,170 @@
 // dear imgui: standalone example application for GLFW + Metal, using programmable pipeline
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 #include "imgui.h"
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_metal.h"
 #include <stdio.h>
 #define GLFW_INCLUDE_NONE
 #define GLFW_EXPOSE_NATIVE_COCOA
 #include <GLFW/glfw3.h>
 #include <GLFW/glfw3native.h>
 #import <Metal/Metal.h>
 #import <QuartzCore/QuartzCore.h>
 static void glfw_error_callback(int error, const char* description)
 {
    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
 }
 int main(int, char**)
 {
    // Setup Dear ImGui binding
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
    // Setup style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Setup window
    glfwSetErrorCallback(glfw_error_callback);
    if (!glfwInit())
        return 1;
    // Create window with graphics context
    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Metal example", NULL, NULL);
    if (window == NULL)
        return 1;
    id <MTLDevice> device = MTLCreateSystemDefaultDevice();;
    id <MTLCommandQueue> commandQueue = [device newCommandQueue];
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplMetal_Init(device);
    NSWindow *nswin = glfwGetCocoaWindow(window);
    CAMetalLayer *layer = [CAMetalLayer layer];
    layer.device = device;
    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
    nswin.contentView.layer = layer;
    nswin.contentView.wantsLayer = YES;
    MTLRenderPassDescriptor *renderPassDescriptor = [MTLRenderPassDescriptor new];
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f};
    // Main loop
    while (!glfwWindowShouldClose(window))
    {
        @autoreleasepool
        {
            // Poll and handle events (inputs, window resize, etc.)
            // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
            // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
            // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
            // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
            glfwPollEvents();
            int width, height;
            glfwGetFramebufferSize(window, &width, &height);
            layer.drawableSize = CGSizeMake(width, height);
            id<CAMetalDrawable> drawable = [layer nextDrawable];
            id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
            renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
            renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
            renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
            renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
            id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
            [renderEncoder pushDebugGroup:@"ImGui demo"];
            // Start the Dear ImGui frame
            ImGui_ImplMetal_NewFrame(renderPassDescriptor);
            ImGui_ImplGlfw_NewFrame();
            ImGui::NewFrame();
            // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
            if (show_demo_window)
                ImGui::ShowDemoWindow(&show_demo_window);
            // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
            {
                static float f = 0.0f;
                static int counter = 0;
                ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
                ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
                ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
                ImGui::Checkbox("Another Window", &show_another_window);
                ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
                ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
                if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                    counter++;
                ImGui::SameLine();
                ImGui::Text("counter = %d", counter);
                ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
                ImGui::End();
            }
            // 3. Show another simple window.
            if (show_another_window)
            {
                ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
                ImGui::Text("Hello from another window!");
                if (ImGui::Button("Close Me"))
                    show_another_window = false;
                ImGui::End();
            }
            // Rendering
            ImGui::Render();
            ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
            [renderEncoder popDebugGroup];
            [renderEncoder endEncoding];
            [commandBuffer presentDrawable:drawable];
            [commandBuffer commit];
        }
    }
    // Cleanup
    ImGui_ImplMetal_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();
    glfwDestroyWindow(window);
    glfwTerminate();
    return 0;
 }
--- a/examples/example_glfw_opengl2/Makefile
+++ b/examples/example_glfw_opengl2/Makefile
@ -0,0 +1,80 @@
 #
 # Cross Platform Makefile
 # Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
 #
 # You will need GLFW (http://www.glfw.org):
 # Linux:
 #   apt-get install libglfw-dev
 # Mac OS X:
 #   brew install glfw
 # MSYS2:
 #   pacman -S --noconfirm --needed mingw-w64-x86_64-toolchain mingw-w64-x86_64-glfw
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_glfw_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl2.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CXXFLAGS = -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
 	LIBS += -lGL `pkg-config --static --libs glfw3`
 	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
 	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 	#LIBS += -lglfw3
 	LIBS += -lglfw
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
 	LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32
 	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_glfw_opengl2/build_win32.bat
+++ b/examples/example_glfw_opengl2/build_win32.bat
@ -0,0 +1,3 @@
@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 mkdir Debug
 cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include *.cpp ..\imgui_impl_opengl2.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeDebug/example_glfw_opengl2.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj
@ -20,30 +20,35 @@
  </ItemGroup>
  <PropertyGroup Label="Globals">
    <ProjectGuid>{9CDA7840-B7A5-496D-A527-E95571496D18}</ProjectGuid>
-    <RootNamespace>opengl_example</RootNamespace>
+    <RootNamespace>example_glfw_opengl2</RootNamespace>
    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>true</UseDebugLibraries>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>true</UseDebugLibraries>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>false</UseDebugLibraries>
    <WholeProgramOptimization>true</WholeProgramOptimization>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>false</UseDebugLibraries>
    <WholeProgramOptimization>true</WholeProgramOptimization>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
  <ImportGroup Label="ExtensionSettings">
@ -85,11 +90,11 @@
    <ClCompile>
      <WarningLevel>Level4</WarningLevel>
      <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@ -99,11 +104,11 @@
    <ClCompile>
      <WarningLevel>Level4</WarningLevel>
      <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@ -115,13 +120,14 @@
      <Optimization>MaxSpeed</Optimization>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <BufferSecurityCheck>false</BufferSecurityCheck>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>
@ -134,13 +140,14 @@
      <Optimization>MaxSpeed</Optimization>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <BufferSecurityCheck>false</BufferSecurityCheck>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>
@ -149,13 +156,23 @@
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\imgui.cpp" />
-    <ClCompile Include="imgui_impl_glfw.cpp" />
+    <ClCompile Include="..\..\imgui_demo.cpp" />
    <ClCompile Include="..\..\imgui_draw.cpp" />
    <ClCompile Include="..\..\imgui_widgets.cpp" />
    <ClCompile Include="..\imgui_impl_glfw.cpp" />
    <ClCompile Include="..\imgui_impl_opengl2.cpp" />
    <ClCompile Include="main.cpp" />
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="..\..\imconfig.h" />
    <ClInclude Include="..\..\imgui.h" />
-    <ClInclude Include="imgui_impl_glfw.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
    <ClInclude Include="..\imgui_impl_glfw.h" />
    <ClInclude Include="..\imgui_impl_opengl2.h" />
  </ItemGroup>
  <ItemGroup>
    <None Include="..\..\misc\natvis\imgui.natvis" />
    <None Include="..\README.txt" />
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
--- a/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
+++ b/examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj.filters
@ -16,9 +16,21 @@
    <ClCompile Include="..\..\imgui.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
-    <ClCompile Include="imgui_impl_glfw.cpp">
+    <ClCompile Include="..\..\imgui_demo.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
    <ClCompile Include="..\..\imgui_draw.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
    <ClCompile Include="..\imgui_impl_glfw.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <ClCompile Include="..\imgui_impl_opengl2.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <ClCompile Include="..\..\imgui_widgets.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="..\..\imconfig.h">
@ -27,8 +39,20 @@
    <ClInclude Include="..\..\imgui.h">
      <Filter>imgui</Filter>
    </ClInclude>
-    <ClInclude Include="imgui_impl_glfw.h">
+    <ClInclude Include="..\..\imgui_internal.h">
      <Filter>imgui</Filter>
    </ClInclude>
    <ClInclude Include="..\imgui_impl_glfw.h">
      <Filter>sources</Filter>
    </ClInclude>
    <ClInclude Include="..\imgui_impl_opengl2.h">
      <Filter>sources</Filter>
    </ClInclude>
  </ItemGroup>
  <ItemGroup>
    <None Include="..\README.txt" />
    <None Include="..\..\misc\natvis\imgui.natvis">
      <Filter>sources</Filter>
    </None>
  </ItemGroup>
 </Project>
--- a/examples/example_glfw_opengl2/main.cpp
+++ b/examples/example_glfw_opengl2/main.cpp
@ -0,0 +1,158 @@
 // dear imgui: standalone example application for GLFW + OpenGL2, using legacy fixed pipeline
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 // **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
 // **Prefer using the code in the example_glfw_opengl2/ folder**
 // See imgui_impl_glfw.cpp for details.
 #include "imgui.h"
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_opengl2.h"
 #include <stdio.h>
 #ifdef __APPLE__
 #define GL_SILENCE_DEPRECATION
 #endif
 #include <GLFW/glfw3.h>
 // [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
 // To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
 // Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
 #if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
 #pragma comment(lib, "legacy_stdio_definitions")
 #endif
 static void glfw_error_callback(int error, const char* description)
 {
    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
 }
 int main(int, char**)
 {
    // Setup window
    glfwSetErrorCallback(glfw_error_callback);
    if (!glfwInit())
        return 1;
    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL2 example", NULL, NULL);
    if (window == NULL)
        return 1;
    glfwMakeContextCurrent(window);
    glfwSwapInterval(1); // Enable vsync
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplOpenGL2_Init();
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    while (!glfwWindowShouldClose(window))
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        glfwPollEvents();
        // Start the Dear ImGui frame
        ImGui_ImplOpenGL2_NewFrame();
        ImGui_ImplGlfw_NewFrame();
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        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);
        // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
        // you may need to backup/reset/restore current shader using the commented lines below.
        //GLint last_program;
        //glGetIntegerv(GL_CURRENT_PROGRAM, &last_program);
        //glUseProgram(0);
        ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
        //glUseProgram(last_program);
        glfwMakeContextCurrent(window);
        glfwSwapBuffers(window);
    }
    // Cleanup
    ImGui_ImplOpenGL2_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();
    glfwDestroyWindow(window);
    glfwTerminate();
    return 0;
 }
--- a/examples/example_glfw_opengl3/Makefile
+++ b/examples/example_glfw_opengl3/Makefile
@ -0,0 +1,108 @@
 #
 # Cross Platform Makefile
 # Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
 #
 # You will need GLFW (http://www.glfw.org):
 # Linux:
 #   apt-get install libglfw-dev
 # Mac OS X:
 #   brew install glfw
 # MSYS2:
 #   pacman -S --noconfirm --needed mingw-w64-x86_64-toolchain mingw-w64-x86_64-glfw
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_glfw_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glfw.cpp ../imgui_impl_opengl3.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CXXFLAGS = -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 ##---------------------------------------------------------------------
 ## OPENGL LOADER
 ##---------------------------------------------------------------------
 ## Using OpenGL loader: gl3w [default]
 SOURCES += ../libs/gl3w/GL/gl3w.c
 CXXFLAGS += -I../libs/gl3w -DIMGUI_IMPL_OPENGL_LOADER_GL3W
 ## Using OpenGL loader: glew
 ## (This assumes a system-wide installation)
 # CXXFLAGS += -lGLEW -DIMGUI_IMPL_OPENGL_LOADER_GLEW
 ## Using OpenGL loader: glad
 # SOURCES += ../libs/glad/src/glad.c
 # CXXFLAGS += -I../libs/glad/include -DIMGUI_IMPL_OPENGL_LOADER_GLAD
 ## Using OpenGL loader: glbinding
 ## This assumes a system-wide installation
 ## of either version 3.0.0 (or newer)
 # CXXFLAGS += -lglbinding -DIMGUI_IMPL_OPENGL_LOADER_GLBINDING3
 ## or the older version 2.x
 # CXXFLAGS += -lglbinding -DIMGUI_IMPL_OPENGL_LOADER_GLBINDING2
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
 	LIBS += -lGL `pkg-config --static --libs glfw3`
 	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
 	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 	#LIBS += -lglfw3
 	LIBS += -lglfw
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
 	LIBS += -lglfw3 -lgdi32 -lopengl32 -limm32
 	CXXFLAGS += `pkg-config --cflags glfw3`
 	CFLAGS = $(CXXFLAGS)
 endif
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../libs/gl3w/GL/%.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 %.o:../libs/glad/src/%.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_glfw_opengl3/build_win32.bat
+++ b/examples/example_glfw_opengl3/build_win32.bat
@ -0,0 +1,3 @@
@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 mkdir Debug
 cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include /I ..\libs\gl3w *.cpp ..\imgui_impl_glfw.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_glfw_opengl3.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 glfw3.lib opengl32.lib gdi32.lib shell32.lib
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj
@ -20,30 +20,35 @@
  </ItemGroup>
  <PropertyGroup Label="Globals">
    <ProjectGuid>{4a1fb5ea-22f5-42a8-ab92-1d2df5d47fb9}</ProjectGuid>
-    <RootNamespace>opengl3_example</RootNamespace>
+    <RootNamespace>example_glfw_opengl3</RootNamespace>
    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>true</UseDebugLibraries>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>true</UseDebugLibraries>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>false</UseDebugLibraries>
    <WholeProgramOptimization>true</WholeProgramOptimization>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
    <ConfigurationType>Application</ConfigurationType>
    <UseDebugLibraries>false</UseDebugLibraries>
    <WholeProgramOptimization>true</WholeProgramOptimization>
    <CharacterSet>MultiByte</CharacterSet>
    <PlatformToolset>v110</PlatformToolset>
  </PropertyGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
  <ImportGroup Label="ExtensionSettings">
@ -85,11 +90,11 @@
    <ClCompile>
      <WarningLevel>Level4</WarningLevel>
      <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@ -99,11 +104,11 @@
    <ClCompile>
      <WarningLevel>Level4</WarningLevel>
      <Optimization>Disabled</Optimization>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
@ -115,13 +120,14 @@
      <Optimization>MaxSpeed</Optimization>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <BufferSecurityCheck>false</BufferSecurityCheck>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-32;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>
@ -134,13 +140,14 @@
      <Optimization>MaxSpeed</Optimization>
      <FunctionLevelLinking>true</FunctionLevelLinking>
      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <AdditionalIncludeDirectories>$(SolutionDir)\libs\glfw\include;$(SolutionDir)\libs\gl3w;..\..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>..\..;..;..\libs\glfw\include;..\libs\gl3w;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
      <BufferSecurityCheck>false</BufferSecurityCheck>
    </ClCompile>
    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalLibraryDirectories>$(SolutionDir)\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalLibraryDirectories>..\libs\glfw\lib-vc2010-64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;glfw3.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>
@ -149,16 +156,26 @@
  </ItemDefinitionGroup>
  <ItemGroup>
    <ClCompile Include="..\..\imgui.cpp" />
    <ClCompile Include="..\..\imgui_demo.cpp" />
    <ClCompile Include="..\..\imgui_draw.cpp" />
    <ClCompile Include="..\..\imgui_widgets.cpp" />
    <ClCompile Include="..\imgui_impl_glfw.cpp" />
    <ClCompile Include="..\imgui_impl_opengl3.cpp" />
    <ClCompile Include="..\libs\gl3w\GL\gl3w.c" />
    <ClCompile Include="imgui_impl_glfw_gl3.cpp" />
    <ClCompile Include="main.cpp" />
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="..\..\imconfig.h" />
    <ClInclude Include="..\..\imgui.h" />
    <ClInclude Include="..\..\imgui_internal.h" />
    <ClInclude Include="..\imgui_impl_glfw.h" />
    <ClInclude Include="..\imgui_impl_opengl3.h" />
    <ClInclude Include="..\libs\gl3w\GL\gl3w.h" />
    <ClInclude Include="..\libs\gl3w\GL\glcorearb.h" />
-    <ClInclude Include="imgui_impl_glfw_gl3.h" />
+  </ItemGroup>
  <ItemGroup>
    <None Include="..\..\misc\natvis\imgui.natvis" />
    <None Include="..\README.txt" />
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
--- a/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
+++ b/examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj.filters
@ -19,12 +19,24 @@
    <ClCompile Include="..\..\imgui.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
    <ClCompile Include="imgui_impl_glfw_gl3.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <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>
    <ClCompile Include="..\imgui_impl_glfw.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <ClCompile Include="..\imgui_impl_opengl3.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <ClCompile Include="..\..\imgui_widgets.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="..\..\imconfig.h">
@ -33,14 +45,26 @@
    <ClInclude Include="..\..\imgui.h">
      <Filter>imgui</Filter>
    </ClInclude>
    <ClInclude Include="imgui_impl_glfw_gl3.h">
      <Filter>sources</Filter>
    </ClInclude>
    <ClInclude Include="..\libs\gl3w\GL\gl3w.h">
      <Filter>gl3w</Filter>
    </ClInclude>
    <ClInclude Include="..\libs\gl3w\GL\glcorearb.h">
      <Filter>gl3w</Filter>
    </ClInclude>
    <ClInclude Include="..\..\imgui_internal.h">
      <Filter>imgui</Filter>
    </ClInclude>
    <ClInclude Include="..\imgui_impl_glfw.h">
      <Filter>sources</Filter>
    </ClInclude>
    <ClInclude Include="..\imgui_impl_opengl3.h">
      <Filter>sources</Filter>
    </ClInclude>
  </ItemGroup>
  <ItemGroup>
    <None Include="..\README.txt" />
    <None Include="..\..\misc\natvis\imgui.natvis">
      <Filter>sources</Filter>
    </None>
  </ItemGroup>
 </Project>
--- a/examples/example_glfw_opengl3/main.cpp
+++ b/examples/example_glfw_opengl3/main.cpp
@ -0,0 +1,210 @@
 // dear imgui: standalone example application for GLFW + OpenGL 3, using programmable pipeline
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 #include "imgui.h"
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_opengl3.h"
 #include <stdio.h>
 // About Desktop OpenGL function loaders:
 //  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
 //  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
 //  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
 #include <GL/gl3w.h>            // Initialize with gl3wInit()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
 #include <GL/glew.h>            // Initialize with glewInit()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
 #include <glad/glad.h>          // Initialize with gladLoadGL()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
 #define GLFW_INCLUDE_NONE       // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
 #include <glbinding/Binding.h>  // Initialize with glbinding::Binding::initialize()
 #include <glbinding/gl/gl.h>
 using namespace gl;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
 #define GLFW_INCLUDE_NONE       // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
 #include <glbinding/glbinding.h>// Initialize with glbinding::initialize()
 #include <glbinding/gl/gl.h>
 using namespace gl;
 #else
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
 // Include glfw3.h after our OpenGL definitions
 #include <GLFW/glfw3.h>
 // [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
 // To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
 // Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
 #if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
 #pragma comment(lib, "legacy_stdio_definitions")
 #endif
 static void glfw_error_callback(int error, const char* description)
 {
    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
 }
 int main(int, char**)
 {
    // Setup window
    glfwSetErrorCallback(glfw_error_callback);
    if (!glfwInit())
        return 1;
    // Decide GL+GLSL versions
 #if __APPLE__
    // GL 3.2 + GLSL 150
    const char* glsl_version = "#version 150";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
    glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // Required on Mac
 #else
    // GL 3.0 + GLSL 130
    const char* glsl_version = "#version 130";
    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
    //glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
    //glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // 3.0+ only
 #endif
    // Create window with graphics context
    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+OpenGL3 example", NULL, NULL);
    if (window == NULL)
        return 1;
    glfwMakeContextCurrent(window);
    glfwSwapInterval(1); // Enable vsync
    // Initialize OpenGL loader
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
    bool err = gl3wInit() != 0;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
    bool err = glewInit() != GLEW_OK;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
    bool err = gladLoadGL() == 0;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
    bool err = false;
    glbinding::Binding::initialize();
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
    bool err = false;
    glbinding::initialize([](const char* name) { return (glbinding::ProcAddress)glfwGetProcAddress(name); });
 #else
    bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
 #endif
    if (err)
    {
        fprintf(stderr, "Failed to initialize OpenGL loader!\n");
        return 1;
    }
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplGlfw_InitForOpenGL(window, true);
    ImGui_ImplOpenGL3_Init(glsl_version);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    while (!glfwWindowShouldClose(window))
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        glfwPollEvents();
        // Start the Dear ImGui frame
        ImGui_ImplOpenGL3_NewFrame();
        ImGui_ImplGlfw_NewFrame();
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        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_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
        glfwSwapBuffers(window);
    }
    // Cleanup
    ImGui_ImplOpenGL3_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();
    glfwDestroyWindow(window);
    glfwTerminate();
    return 0;
 }
--- a/examples/example_glfw_vulkan/CMakeLists.txt
+++ b/examples/example_glfw_vulkan/CMakeLists.txt
@ -0,0 +1,41 @@
 # Example usage:
 #  mkdir build
 #  cd build
 #  cmake -g "Visual Studio 14 2015" ..
 cmake_minimum_required(VERSION 2.8)
 project(imgui_example_glfw_vulkan C CXX)
 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 an 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)
 # Dear 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(example_glfw_vulkan ${sources} ${IMGUI_DIR}/examples/imgui_impl_glfw.cpp ${IMGUI_DIR}/examples/imgui_impl_vulkan.cpp ${IMGUI_DIR}/imgui.cpp ${IMGUI_DIR}/imgui_draw.cpp ${IMGUI_DIR}/imgui_demo.cpp ${IMGUI_DIR}/imgui_widgets.cpp)
 target_link_libraries(example_glfw_vulkan ${LIBRARIES})
--- a/examples/example_glfw_vulkan/build_win32.bat
+++ b/examples/example_glfw_vulkan/build_win32.bat
@ -0,0 +1,7 @@
@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 mkdir Debug
 cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeDebug/example_glfw_vulkan.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 /libpath:%VULKAN_SDK%\lib32 glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
 mkdir Release
 cl /nologo /Zi /MD /Ox /Oi /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeRelease/example_glfw_vulkan.exe /FoRelease/ /link /LIBPATH:..\libs\glfw\lib-vc2010-32 /libpath:%VULKAN_SDK%\lib32 glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
--- a/examples/example_glfw_vulkan/build_win64.bat
+++ b/examples/example_glfw_vulkan/build_win64.bat
@ -0,0 +1,7 @@
@REM Build for Visual Studio compiler. Run your copy of amd64/vcvars32.bat to setup 64-bit command-line compiler.
 mkdir Debug
 cl /nologo /Zi /MD /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeDebug/example_glfw_vulkan.exe /FoDebug/ /link /LIBPATH:..\libs\glfw\lib-vc2010-64 /libpath:%VULKAN_SDK%\lib glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
 mkdir Release
 cl /nologo /Zi /MD /Ox /Oi /I .. /I ..\.. /I ..\libs\glfw\include /I %VULKAN_SDK%\include *.cpp ..\imgui_impl_vulkan.cpp ..\imgui_impl_glfw.cpp ..\..\imgui*.cpp /FeRelease/example_glfw_vulkan.exe /FoRelease/ /link /LIBPATH:..\libs\glfw\lib-vc2010-64 /libpath:%VULKAN_SDK%\lib glfw3.lib opengl32.lib gdi32.lib shell32.lib vulkan-1.lib
--- a/examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj
+++ b/examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj
@ -0,0 +1,180 @@
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  <ImportGroup Label="ExtensionTargets">
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 </Project>
--- a/examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj.filters
+++ b/examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj.filters
@ -0,0 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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    <Filter Include="imgui">
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--- a/examples/example_glfw_vulkan/gen_spv.sh
+++ b/examples/example_glfw_vulkan/gen_spv.sh
@ -0,0 +1,3 @@
 #!/bin/bash
 glslangValidator -V -x -o glsl_shader.frag.u32 glsl_shader.frag
 glslangValidator -V -x -o glsl_shader.vert.u32 glsl_shader.vert
--- a/examples/example_glfw_vulkan/glsl_shader.frag
+++ b/examples/example_glfw_vulkan/glsl_shader.frag
@ -0,0 +1,14 @@
 #version 450 core
 layout(location = 0) out vec4 fColor;
 layout(set=0, binding=0) uniform sampler2D sTexture;
 layout(location = 0) in struct {
    vec4 Color;
    vec2 UV;
 } In;
 void main()
 {
    fColor = In.Color * texture(sTexture, In.UV.st);
 }
--- a/examples/example_glfw_vulkan/glsl_shader.vert
+++ b/examples/example_glfw_vulkan/glsl_shader.vert
@ -0,0 +1,25 @@
 #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 gl_PerVertex {
    vec4 gl_Position;
 };
 layout(location = 0) out struct {
    vec4 Color;
    vec2 UV;
 } Out;
 void main()
 {
    Out.Color = aColor;
    Out.UV = aUV;
    gl_Position = vec4(aPos * pc.uScale + pc.uTranslate, 0, 1);
 }
--- a/examples/example_glfw_vulkan/main.cpp
+++ b/examples/example_glfw_vulkan/main.cpp
@ -0,0 +1,530 @@
 // dear imgui: standalone example application for Glfw + Vulkan
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
 // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
 //   You will use those if you want to use this rendering back-end in your engine/app.
 // - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
 //   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
 // Read comments in imgui_impl_vulkan.h.
 #include "imgui.h"
 #include "imgui_impl_glfw.h"
 #include "imgui_impl_vulkan.h"
 #include <stdio.h>          // printf, fprintf
 #include <stdlib.h>         // abort
 #define GLFW_INCLUDE_NONE
 #define GLFW_INCLUDE_VULKAN
 #include <GLFW/glfw3.h>
 #include <vulkan/vulkan.h>
 // [Win32] Our example includes a copy of glfw3.lib pre-compiled with VS2010 to maximize ease of testing and compatibility with old VS compilers.
 // To link with VS2010-era libraries, VS2015+ requires linking with legacy_stdio_definitions.lib, which we do using this pragma.
 // Your own project should not be affected, as you are likely to link with a newer binary of GLFW that is adequate for your version of Visual Studio.
 #if defined(_MSC_VER) && (_MSC_VER >= 1900) && !defined(IMGUI_DISABLE_WIN32_FUNCTIONS)
 #pragma comment(lib, "legacy_stdio_definitions")
 #endif
 //#define IMGUI_UNLIMITED_FRAME_RATE
 #ifdef _DEBUG
 #define IMGUI_VULKAN_DEBUG_REPORT
 #endif
 static VkAllocationCallbacks*   g_Allocator = NULL;
 static VkInstance               g_Instance = VK_NULL_HANDLE;
 static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
 static VkDevice                 g_Device = VK_NULL_HANDLE;
 static uint32_t                 g_QueueFamily = (uint32_t)-1;
 static VkQueue                  g_Queue = VK_NULL_HANDLE;
 static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
 static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
 static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
 static ImGui_ImplVulkanH_Window g_MainWindowData;
 static int                      g_MinImageCount = 2;
 static bool                     g_SwapChainRebuild = false;
 static int                      g_SwapChainResizeWidth = 0;
 static int                      g_SwapChainResizeHeight = 0;
 static void check_vk_result(VkResult err)
 {
    if (err == 0) return;
    printf("VkResult %d\n", err);
    if (err < 0)
        abort();
 }
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
 static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
 {
    (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
    fprintf(stderr, "[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
    return VK_FALSE;
 }
 #endif // IMGUI_VULKAN_DEBUG_REPORT
 static void SetupVulkan(const char** extensions, uint32_t extensions_count)
 {
    VkResult err;
    // Create Vulkan Instance
    {
        VkInstanceCreateInfo create_info = {};
        create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
        create_info.enabledExtensionCount = extensions_count;
        create_info.ppEnabledExtensionNames = extensions;
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
        // Enabling multiple validation layers grouped as LunarG standard validation
        const char* layers[] = { "VK_LAYER_LUNARG_standard_validation" };
        create_info.enabledLayerCount = 1;
        create_info.ppEnabledLayerNames = layers;
        // Enable debug report extension (we need additional storage, so we duplicate the user array to add our new extension to it)
        const char** extensions_ext = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
        memcpy(extensions_ext, extensions, extensions_count * sizeof(const char*));
        extensions_ext[extensions_count] = "VK_EXT_debug_report";
        create_info.enabledExtensionCount = extensions_count + 1;
        create_info.ppEnabledExtensionNames = extensions_ext;
        // Create Vulkan Instance
        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
        check_vk_result(err);
        free(extensions_ext);
        // Get the function pointer (required for any extensions)
        auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
        IM_ASSERT(vkCreateDebugReportCallbackEXT != NULL);
        // Setup the debug report callback
        VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
        debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
        debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
        debug_report_ci.pfnCallback = debug_report;
        debug_report_ci.pUserData = NULL;
        err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
        check_vk_result(err);
 #else
        // Create Vulkan Instance without any debug feature
        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
        check_vk_result(err);
        IM_UNUSED(g_DebugReport);
 #endif
    }
    // Select GPU
    {
        uint32_t gpu_count;
        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
        check_vk_result(err);
        IM_ASSERT(gpu_count > 0);
        VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
        check_vk_result(err);
        // If a number >1 of GPUs got reported, you should find the best fit GPU for your purpose
        // e.g. VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU if available, or with the greatest memory available, etc.
        // for sake of simplicity we'll just take the first one, assuming it has a graphics queue family.
        g_PhysicalDevice = gpus[0];
        free(gpus);
    }
    // Select graphics queue family
    {
        uint32_t count;
        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, NULL);
        VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, queues);
        for (uint32_t i = 0; i < count; i++)
            if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
            {
                g_QueueFamily = i;
                break;
            }
        free(queues);
        IM_ASSERT(g_QueueFamily != (uint32_t)-1);
    }
    // Create Logical Device (with 1 queue)
    {
        int device_extension_count = 1;
        const char* device_extensions[] = { "VK_KHR_swapchain" };
        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 = 1;
        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_PhysicalDevice, &create_info, g_Allocator, &g_Device);
        check_vk_result(err);
        vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
    }
    // Create Descriptor Pool
    {
        VkDescriptorPoolSize pool_sizes[] =
        {
            { 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 * IM_ARRAYSIZE(pool_sizes);
        pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
        pool_info.pPoolSizes = pool_sizes;
        err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
        check_vk_result(err);
    }
 }
 // All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
 // Your real engine/app may not use them.
 static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
 {
    wd->Surface = surface;
    // Check for WSI support
    VkBool32 res;
    vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
    if (res != VK_TRUE)
    {
        fprintf(stderr, "Error no WSI support on physical device 0\n");
        exit(-1);
    }
    // Select Surface Format
    const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
    const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
    wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
    // Select Present Mode
 #ifdef IMGUI_UNLIMITED_FRAME_RATE
    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
 #else
    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
 #endif
    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
    //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
    // Create SwapChain, RenderPass, Framebuffer, etc.
    IM_ASSERT(g_MinImageCount >= 2);
    ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
 }
 static void CleanupVulkan()
 {
    vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
    // Remove the debug report callback
    auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
    vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
 #endif // IMGUI_VULKAN_DEBUG_REPORT
    vkDestroyDevice(g_Device, g_Allocator);
    vkDestroyInstance(g_Instance, g_Allocator);
 }
 static void CleanupVulkanWindow()
 {
    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
 }
 static void FrameRender(ImGui_ImplVulkanH_Window* wd)
 {
    VkResult err;
    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
    err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
    check_vk_result(err);
    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
    {
        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
        check_vk_result(err);
        err = vkResetFences(g_Device, 1, &fd->Fence);
        check_vk_result(err);
    }
    {
        err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
        check_vk_result(err);
        VkCommandBufferBeginInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
        info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
        err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
        check_vk_result(err);
    }
    {
        VkRenderPassBeginInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
        info.renderPass = wd->RenderPass;
        info.framebuffer = fd->Framebuffer;
        info.renderArea.extent.width = wd->Width;
        info.renderArea.extent.height = wd->Height;
        info.clearValueCount = 1;
        info.pClearValues = &wd->ClearValue;
        vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
    }
    // Record Imgui Draw Data and draw funcs into command buffer
    ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
    // Submit command buffer
    vkCmdEndRenderPass(fd->CommandBuffer);
    {
        VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
        VkSubmitInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
        info.waitSemaphoreCount = 1;
        info.pWaitSemaphores = &image_acquired_semaphore;
        info.pWaitDstStageMask = &wait_stage;
        info.commandBufferCount = 1;
        info.pCommandBuffers = &fd->CommandBuffer;
        info.signalSemaphoreCount = 1;
        info.pSignalSemaphores = &render_complete_semaphore;
        err = vkEndCommandBuffer(fd->CommandBuffer);
        check_vk_result(err);
        err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
        check_vk_result(err);
    }
 }
 static void FramePresent(ImGui_ImplVulkanH_Window* wd)
 {
    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
    VkPresentInfoKHR info = {};
    info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
    info.waitSemaphoreCount = 1;
    info.pWaitSemaphores = &render_complete_semaphore;
    info.swapchainCount = 1;
    info.pSwapchains = &wd->Swapchain;
    info.pImageIndices = &wd->FrameIndex;
    VkResult err = vkQueuePresentKHR(g_Queue, &info);
    check_vk_result(err);
    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
 }
 static void glfw_error_callback(int error, const char* description)
 {
    fprintf(stderr, "Glfw Error %d: %s\n", error, description);
 }
 static void glfw_resize_callback(GLFWwindow*, int w, int h)
 {
    g_SwapChainRebuild = true;
    g_SwapChainResizeWidth = w;
    g_SwapChainResizeHeight = h;
 }
 int main(int, char**)
 {
    // Setup GLFW window
    glfwSetErrorCallback(glfw_error_callback);
    if (!glfwInit())
        return 1;
    glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
    GLFWwindow* window = glfwCreateWindow(1280, 720, "Dear ImGui GLFW+Vulkan example", NULL, NULL);
    // Setup Vulkan
    if (!glfwVulkanSupported())
    {
        printf("GLFW: Vulkan Not Supported\n");
        return 1;
    }
    uint32_t extensions_count = 0;
    const char** extensions = glfwGetRequiredInstanceExtensions(&extensions_count);
    SetupVulkan(extensions, extensions_count);
    // Create Window Surface
    VkSurfaceKHR surface;
    VkResult err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &surface);
    check_vk_result(err);
    // Create Framebuffers
    int w, h;
    glfwGetFramebufferSize(window, &w, &h);
    glfwSetFramebufferSizeCallback(window, glfw_resize_callback);
    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
    SetupVulkanWindow(wd, surface, w, h);
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplGlfw_InitForVulkan(window, true);
    ImGui_ImplVulkan_InitInfo init_info = {};
    init_info.Instance = g_Instance;
    init_info.PhysicalDevice = g_PhysicalDevice;
    init_info.Device = g_Device;
    init_info.QueueFamily = g_QueueFamily;
    init_info.Queue = g_Queue;
    init_info.PipelineCache = g_PipelineCache;
    init_info.DescriptorPool = g_DescriptorPool;
    init_info.Allocator = g_Allocator;
    init_info.MinImageCount = g_MinImageCount;
    init_info.ImageCount = wd->ImageCount;
    init_info.CheckVkResultFn = check_vk_result;
    ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Upload Fonts
    {
        // Use any command queue
        VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
        VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
        err = vkResetCommandPool(g_Device, command_pool, 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(command_buffer, &begin_info);
        check_vk_result(err);
        ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
        VkSubmitInfo end_info = {};
        end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
        end_info.commandBufferCount = 1;
        end_info.pCommandBuffers = &command_buffer;
        err = vkEndCommandBuffer(command_buffer);
        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_ImplVulkan_DestroyFontUploadObjects();
    }
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    while (!glfwWindowShouldClose(window))
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        glfwPollEvents();
        if (g_SwapChainRebuild)
        {
            g_SwapChainRebuild = false;
            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
            ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, g_SwapChainResizeWidth, g_SwapChainResizeHeight, g_MinImageCount);
            g_MainWindowData.FrameIndex = 0;
        }
        // Start the Dear ImGui frame
        ImGui_ImplVulkan_NewFrame();
        ImGui_ImplGlfw_NewFrame();
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
        FrameRender(wd);
        FramePresent(wd);
    }
    // Cleanup
    err = vkDeviceWaitIdle(g_Device);
    check_vk_result(err);
    ImGui_ImplVulkan_Shutdown();
    ImGui_ImplGlfw_Shutdown();
    ImGui::DestroyContext();
    CleanupVulkanWindow();
    CleanupVulkan();
    glfwDestroyWindow(window);
    glfwTerminate();
    return 0;
 }
--- a/examples/example_glut_opengl2/Makefile
+++ b/examples/example_glut_opengl2/Makefile
@ -0,0 +1,74 @@
 #
 # Cross Platform Makefile
 # Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
 #
 # Linux:
 #   apt-get install freeglut3-dev
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_glut_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_glut.cpp ../imgui_impl_opengl2.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CXXFLAGS = -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
 	LIBS += -lGL -lglut
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
 	LIBS += -framework OpenGL -framework GLUT
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
 	LIBS += -lgdi32 -lopengl32 -limm32
 ifeq ($(shell pkg-config freeglut --exists 2> /dev/null && echo yes || echo no),yes)
 	CXXFLAGS += $(shell pkg-config freeglut --cflags)
 	LIBS += $(shell pkg-config freeglut --libs)
 else
 	LIBS += -lglut
 endif
 	CFLAGS = $(CXXFLAGS)
 endif
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_glut_opengl2/example_glut_opengl2.vcxproj
+++ b/examples/example_glut_opengl2/example_glut_opengl2.vcxproj
@ -0,0 +1,180 @@
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    </ProjectConfiguration>
  </ItemGroup>
  <PropertyGroup Label="Globals">
    <ProjectGuid>{F90D0333-5FB1-440D-918D-DD39A1B5187E}</ProjectGuid>
    <RootNamespace>example_glut_opengl2</RootNamespace>
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    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <AdditionalLibraryDirectories>$(GLUT_ROOT_PATH)/lib;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;freeglut.lib;%(AdditionalDependencies)</AdditionalDependencies>
      <SubSystem>Console</SubSystem>
      <IgnoreSpecificDefaultLibraries>msvcrt.lib</IgnoreSpecificDefaultLibraries>
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    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <AdditionalLibraryDirectories>$(GLUT_ROOT_PATH)/lib/x64;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;freeglut.lib;%(AdditionalDependencies)</AdditionalDependencies>
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    <ClCompile>
      <WarningLevel>Level4</WarningLevel>
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    <Link>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <EnableCOMDATFolding>true</EnableCOMDATFolding>
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    <ClCompile Include="..\imgui_impl_glut.cpp" />
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    <ClCompile Include="main.cpp" />
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  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
 </Project>
--- a/examples/example_glut_opengl2/example_glut_opengl2.vcxproj.filters
+++ b/examples/example_glut_opengl2/example_glut_opengl2.vcxproj.filters
@ -0,0 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup>
    <Filter Include="imgui">
      <UniqueIdentifier>{c336cfe3-f0c4-464c-9ef0-a9e17a7ff222}</UniqueIdentifier>
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    <Filter Include="sources">
      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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    <ClCompile Include="main.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <ClCompile Include="..\..\imgui.cpp">
      <Filter>imgui</Filter>
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    <ClCompile Include="..\..\imgui_demo.cpp">
      <Filter>imgui</Filter>
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      <Filter>imgui</Filter>
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    <ClCompile Include="..\imgui_impl_glut.cpp">
      <Filter>sources</Filter>
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    <ClCompile Include="..\imgui_impl_opengl2.cpp">
      <Filter>sources</Filter>
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    <ClCompile Include="..\..\imgui_widgets.cpp">
      <Filter>imgui</Filter>
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      <Filter>sources</Filter>
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 </Project>
--- a/examples/example_glut_opengl2/main.cpp
+++ b/examples/example_glut_opengl2/main.cpp
@ -0,0 +1,146 @@
 // dear imgui: standalone example application for GLUT/FreeGLUT + OpenGL2, using legacy fixed pipeline
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // !!! GLUT/FreeGLUT IS OBSOLETE SOFTWARE. Using GLUT is not recommended unless you really miss the 90's. !!!
 // !!! If someone or something is teaching you GLUT in 2020, you are being abused. Please show some resistance. !!!
 // !!! Nowadays, prefer using GLFW or SDL instead!
 #include "imgui.h"
 #include "imgui_impl_glut.h"
 #include "imgui_impl_opengl2.h"
 #ifdef __APPLE__
    #include <GLUT/glut.h>
 #else
    #include <GL/freeglut.h>
 #endif
 #ifdef _MSC_VER
 #pragma warning (disable: 4505) // unreferenced local function has been removed
 #endif
 // Our state
 static bool show_demo_window = true;
 static bool show_another_window = false;
 static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
 void my_display_code()
 {
    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
    if (show_demo_window)
        ImGui::ShowDemoWindow(&show_demo_window);
    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
    {
        static float f = 0.0f;
        static int counter = 0;
        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
        ImGui::Checkbox("Another Window", &show_another_window);
        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
            counter++;
        ImGui::SameLine();
        ImGui::Text("counter = %d", counter);
        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
        ImGui::End();
    }
    // 3. Show another simple window.
    if (show_another_window)
    {
        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
        ImGui::Text("Hello from another window!");
        if (ImGui::Button("Close Me"))
            show_another_window = false;
        ImGui::End();
    }
 }
 void glut_display_func()
 {
    // Start the Dear ImGui frame
    ImGui_ImplOpenGL2_NewFrame();
    ImGui_ImplGLUT_NewFrame();
    my_display_code();
    // Rendering
    ImGui::Render();
    ImGuiIO& io = ImGui::GetIO();
    glViewport(0, 0, (GLsizei)io.DisplaySize.x, (GLsizei)io.DisplaySize.y);
    glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
    glClear(GL_COLOR_BUFFER_BIT);
    //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound, but prefer using the GL3+ code.
    ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
    glutSwapBuffers();
    glutPostRedisplay();
 }
 // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
 // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
 // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
 // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
 int main(int argc, char** argv)
 {
    // Create GLUT window
    glutInit(&argc, argv);
 #ifdef __FREEGLUT_EXT_H__
    glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_GLUTMAINLOOP_RETURNS);
 #endif
    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_MULTISAMPLE);
    glutInitWindowSize(1280, 720);
    glutCreateWindow("Dear ImGui GLUT+OpenGL2 Example");
    // Setup GLUT display function
    // We will also call ImGui_ImplGLUT_InstallFuncs() to get all the other functions installed for us,
    // otherwise it is possible to install our own functions and call the imgui_impl_glut.h functions ourselves.
    glutDisplayFunc(glut_display_func);
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplGLUT_Init();
    ImGui_ImplGLUT_InstallFuncs();
    ImGui_ImplOpenGL2_Init();
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    glutMainLoop();
    // Cleanup
    ImGui_ImplOpenGL2_Shutdown();
    ImGui_ImplGLUT_Shutdown();
    ImGui::DestroyContext();
    return 0;
 }
--- a/examples/example_marmalade/data/app.icf
+++ b/examples/example_marmalade/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
--- a/examples/example_marmalade/main.cpp
+++ b/examples/example_marmalade/main.cpp
@ -0,0 +1,123 @@
 // dear imgui: standalone example application for Marmalade
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // Copyright (C) 2015 by Giovanni Zito
 // This file is part of Dear 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**)
 {
    IwGxInit();
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_Marmalade_Init(true);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    while (true)
    {
        if (s3eDeviceCheckQuitRequest())
            break;
        // Poll and handle inputs
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        s3eKeyboardUpdate();
        s3ePointerUpdate();
        // Start the Dear ImGui frame
        ImGui_Marmalade_NewFrame();
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        IwGxSetColClear(clear_color.x * 255, clear_color.y * 255, clear_color.z * 255, clear_color.w * 255);
        IwGxClear();
        ImGui_Marmalade_RenderDrawData(ImGui::GetDrawData());
        IwGxSwapBuffers();
        s3eDeviceYield(0);
    }
    // Cleanup
    ImGui_Marmalade_Shutdown();
    ImGui::DestroyContext();
    IwGxTerminate();
    return 0;
 }
--- a/examples/example_marmalade/marmalade_example.mkb
+++ b/examples/example_marmalade/marmalade_example.mkb
@ -0,0 +1,46 @@
 #!/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
    ../../imgui_widgets.cpp
    ../../imconfig.h
    ../../imgui.h
    ../../imgui_internal.h
    ["imgui","Marmalade binding"]
    ../imgui_impl_marmalade.h
    ../imgui_impl_marmalade.cpp
    main.cpp
 }
--- a/examples/example_null/Makefile
+++ b/examples/example_null/Makefile
@ -0,0 +1,87 @@
 #
 # Cross Platform Makefile
 # Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
 #
 # Important: This is a "null back-end" application, with no visible output or interaction!
 # This is used for testing purpose and continuous integration, and has little use for end-user.
 #
 # Options
 WITH_EXTRA_WARNINGS ?= 0
 WITH_FREETYPE ?= 0
 EXE = example_null
 SOURCES = main.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CXXFLAGS += -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 # We use the WITH_EXTRA_WARNINGS flag on our CI setup to eagerly catch zealous warnings
 ifeq ($(WITH_EXTRA_WARNINGS), 1)
 	CXXFLAGS += -Wno-zero-as-null-pointer-constant -Wno-double-promotion -Wno-variadic-macros
 endif
 # We use the WITH_FREETYPE flag on our CI setup to test compiling misc/freetype/imgui_freetype.cpp
 # (only supported on Linux, and note that the imgui_freetype code currently won't be executed)
 ifeq ($(WITH_FREETYPE), 1)
 	SOURCES += ../../misc/freetype/imgui_freetype.cpp
 	CXXFLAGS += $(shell pkg-config --cflags freetype2)
 	LIBS += $(shell pkg-config --libs freetype2)
 endif
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
 	ifneq ($(WITH_EXTRA_WARNINGS), 0)
 		CXXFLAGS += -Wextra -pedantic
 	endif
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
 	ifneq ($(WITH_EXTRA_WARNINGS), 0)
 		CXXFLAGS += -Weverything -Wno-reserved-id-macro -Wno-c++98-compat-pedantic -Wno-padded -Wno-c++11-long-long
 	endif
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
 	ifneq ($(WITH_EXTRA_WARNINGS), 0)
 		CXXFLAGS += -Wextra -pedantic
 	endif
 	CFLAGS = $(CXXFLAGS)
 endif
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../misc/freetype/%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_null/build_win32.bat
+++ b/examples/example_null/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 ..\.. %* *.cpp ..\..\*.cpp /FeDebug/example_null.exe /FoDebug/ /link gdi32.lib shell32.lib
--- a/examples/example_null/main.cpp
+++ b/examples/example_null/main.cpp
@ -0,0 +1,37 @@
 // dear imgui: null/dummy example application
 // (compile and link imgui, create context, run headless with NO INPUTS, NO GRAPHICS OUTPUT)
 // This is useful to test building, but you cannot interact with anything here!
 #include "imgui.h"
 #include <stdio.h>
 int main(int, char**)
 {
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO();
    // Build atlas
    unsigned char* tex_pixels = NULL;
    int tex_w, tex_h;
    io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_w, &tex_h);
    for (int n = 0; n < 20; n++)
    {
        printf("NewFrame() %d\n", n);
        io.DisplaySize = ImVec2(1920, 1080);
        io.DeltaTime = 1.0f / 60.0f;
        ImGui::NewFrame();
        static float f = 0.0f;
        ImGui::Text("Hello, world!");
        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
        ImGui::ShowDemoWindow(NULL);
        ImGui::Render();
    }
    printf("DestroyContext()\n");
    ImGui::DestroyContext();
    return 0;
 }
--- a/examples/example_sdl_directx11/build_win32.bat
+++ b/examples/example_sdl_directx11/build_win32.bat
@ -0,0 +1,8 @@
@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 set OUT_DIR=Debug
 set OUT_EXE=example_sdl_directx11
 set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include /I "%WindowsSdkDir%Include\um" /I "%WindowsSdkDir%Include\shared" /I "%DXSDK_DIR%Include"
 set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_dx11.cpp ..\..\imgui*.cpp
 set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib /LIBPATH:"%DXSDK_DIR%/Lib/x86" d3d11.lib d3dcompiler.lib
 mkdir %OUT_DIR%
 cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console
--- a/examples/example_sdl_directx11/example_sdl_directx11.vcxproj
+++ b/examples/example_sdl_directx11/example_sdl_directx11.vcxproj
@ -0,0 +1,181 @@
 <?xml version="1.0" encoding="utf-8"?>
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      <Platform>x64</Platform>
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  <PropertyGroup Label="Globals">
    <ProjectGuid>{9E1987E3-1F19-45CA-B9C9-D31E791836D8}</ProjectGuid>
    <RootNamespace>example_sdl_directx11</RootNamespace>
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      <GenerateDebugInformation>true</GenerateDebugInformation>
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    <ClCompile Include="..\..\imgui.cpp" />
    <ClCompile Include="..\..\imgui_demo.cpp" />
    <ClCompile Include="..\..\imgui_draw.cpp" />
    <ClCompile Include="..\..\imgui_widgets.cpp" />
    <ClCompile Include="..\imgui_impl_dx11.cpp" />
    <ClCompile Include="..\imgui_impl_sdl.cpp" />
    <ClCompile Include="main.cpp" />
  </ItemGroup>
  <ItemGroup>
    <ClInclude Include="..\..\imconfig.h" />
    <ClInclude Include="..\..\imgui.h" />
    <ClInclude Include="..\..\imgui_internal.h" />
    <ClInclude Include="..\imgui_impl_dx11.h" />
    <ClInclude Include="..\imgui_impl_sdl.h" />
  </ItemGroup>
  <ItemGroup>
    <None Include="..\..\misc\natvis\imgui.natvis" />
    <None Include="..\README.txt" />
  </ItemGroup>
  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
  <ImportGroup Label="ExtensionTargets">
  </ImportGroup>
 </Project>
--- a/examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters
+++ b/examples/example_sdl_directx11/example_sdl_directx11.vcxproj.filters
@ -15,7 +15,13 @@
    <ClInclude Include="..\..\imgui.h">
      <Filter>imgui</Filter>
    </ClInclude>
-    <ClInclude Include="imgui_impl_dx11.h">
+    <ClInclude Include="..\..\imgui_internal.h">
      <Filter>imgui</Filter>
    </ClInclude>
    <ClInclude Include="..\imgui_impl_dx11.h">
      <Filter>sources</Filter>
    </ClInclude>
    <ClInclude Include="..\imgui_impl_sdl.h">
      <Filter>sources</Filter>
    </ClInclude>
  </ItemGroup>
@ -26,8 +32,26 @@
    <ClCompile Include="main.cpp">
      <Filter>sources</Filter>
    </ClCompile>
-    <ClCompile Include="imgui_impl_dx11.cpp">
+    <ClCompile Include="..\..\imgui_demo.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
    <ClCompile Include="..\..\imgui_draw.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
    <ClCompile Include="..\imgui_impl_dx11.cpp">
      <Filter>sources</Filter>
    </ClCompile>
    <ClCompile Include="..\..\imgui_widgets.cpp">
      <Filter>imgui</Filter>
    </ClCompile>
    <ClCompile Include="..\imgui_impl_sdl.cpp">
      <Filter>sources</Filter>
    </ClCompile>
  </ItemGroup>
  <ItemGroup>
    <None Include="..\README.txt" />
    <None Include="..\..\misc\natvis\imgui.natvis">
      <Filter>sources</Filter>
    </None>
  </ItemGroup>
 </Project>
--- a/examples/example_sdl_directx11/main.cpp
+++ b/examples/example_sdl_directx11/main.cpp
@ -0,0 +1,228 @@
 // dear imgui: standalone example application for SDL2 + DirectX 11
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_dx11.h"
 #include <d3d11.h>
 #include <stdio.h>
 #include <SDL.h>
 #include <SDL_syswm.h>
 // Data
 static ID3D11Device*            g_pd3dDevice = NULL;
 static ID3D11DeviceContext*     g_pd3dDeviceContext = NULL;
 static IDXGISwapChain*          g_pSwapChain = NULL;
 static ID3D11RenderTargetView*  g_mainRenderTargetView = NULL;
 // Forward declarations of helper functions
 bool CreateDeviceD3D(HWND hWnd);
 void CleanupDeviceD3D();
 void CreateRenderTarget();
 void CleanupRenderTarget();
 // Main code
 int main(int, char**)
 {
    // Setup SDL
    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
    {
        printf("Error: %s\n", SDL_GetError());
        return -1;
    }
    // Setup window
    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+DirectX11 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
    SDL_SysWMinfo wmInfo;
    SDL_VERSION(&wmInfo.version);
    SDL_GetWindowWMInfo(window, &wmInfo);
    HWND hwnd = (HWND)wmInfo.info.win.window;
    // Initialize Direct3D
    if (!CreateDeviceD3D(hwnd))
    {
        CleanupDeviceD3D();
        return 1;
    }
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplSDL2_InitForD3D(window);
    ImGui_ImplDX11_Init(g_pd3dDevice, g_pd3dDeviceContext);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    bool done = false;
    while (!done)
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        SDL_Event event;
        while (SDL_PollEvent(&event))
        {
            ImGui_ImplSDL2_ProcessEvent(&event);
            if (event.type == SDL_QUIT)
                done = true;
            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                done = true;
            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
            {                
                // Release all outstanding references to the swap chain's buffers before resizing.
                CleanupRenderTarget();
                g_pSwapChain->ResizeBuffers(0, 0, 0, DXGI_FORMAT_UNKNOWN, 0);
                CreateRenderTarget();
            }
        }
        // Start the Dear ImGui frame
        ImGui_ImplDX11_NewFrame();
        ImGui_ImplSDL2_NewFrame(window);
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        g_pd3dDeviceContext->OMSetRenderTargets(1, &g_mainRenderTargetView, NULL);
        g_pd3dDeviceContext->ClearRenderTargetView(g_mainRenderTargetView, (float*)&clear_color);
        ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
        g_pSwapChain->Present(1, 0); // Present with vsync
        //g_pSwapChain->Present(0, 0); // Present without vsync
    }
    // Cleanup
    ImGui_ImplDX11_Shutdown();
    ImGui_ImplSDL2_Shutdown();
    ImGui::DestroyContext();
    CleanupDeviceD3D();
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
 }
 // Helper functions
 bool CreateDeviceD3D(HWND hWnd)
 {
    // Setup swap chain
    DXGI_SWAP_CHAIN_DESC sd;
    ZeroMemory(&sd, sizeof(sd));
    sd.BufferCount = 2;
    sd.BufferDesc.Width = 0;
    sd.BufferDesc.Height = 0;
    sd.BufferDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
    sd.BufferDesc.RefreshRate.Numerator = 60;
    sd.BufferDesc.RefreshRate.Denominator = 1;
    sd.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_MODE_SWITCH;
    sd.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
    sd.OutputWindow = hWnd;
    sd.SampleDesc.Count = 1;
    sd.SampleDesc.Quality = 0;
    sd.Windowed = TRUE;
    sd.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
    UINT createDeviceFlags = 0;
    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
    D3D_FEATURE_LEVEL featureLevel;
    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
        return false;
    CreateRenderTarget();
    return true;
 }
 void CleanupDeviceD3D()
 {
    CleanupRenderTarget();
    if (g_pSwapChain) { g_pSwapChain->Release(); g_pSwapChain = NULL; }
    if (g_pd3dDeviceContext) { g_pd3dDeviceContext->Release(); g_pd3dDeviceContext = NULL; }
    if (g_pd3dDevice) { g_pd3dDevice->Release(); g_pd3dDevice = NULL; }
 }
 void CreateRenderTarget()
 {
    ID3D11Texture2D* pBackBuffer;
    g_pSwapChain->GetBuffer(0, IID_PPV_ARGS(&pBackBuffer));
    g_pd3dDevice->CreateRenderTargetView(pBackBuffer, NULL, &g_mainRenderTargetView);
    pBackBuffer->Release();
 }
 void CleanupRenderTarget()
 {
    if (g_mainRenderTargetView) { g_mainRenderTargetView->Release(); g_mainRenderTargetView = NULL; }
 }
--- a/examples/example_sdl_metal/Makefile
+++ b/examples/example_sdl_metal/Makefile
@ -0,0 +1,46 @@
 #
 # You will need SDL2 (http://www.libsdl.org):
 #   brew install sdl2
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_sdl_metal
 SOURCES = main.mm
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_metal.mm
 SOURCES += ../../imgui.cpp ../../imgui_widgets.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 LIBS = -framework Metal -framework MetalKit -framework Cocoa -framework IOKit -framework CoreVideo -framework QuartzCore
 LIBS += `sdl2-config --libs`
 LIBS += -L/usr/local/lib
 CXXFLAGS = -I../ -I../../ -I/usr/local/include
 CXXFLAGS += `sdl2-config --cflags`
 CXXFLAGS += -Wall -Wformat
 CFLAGS = $(CXXFLAGS)
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.mm
 	$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
 %.o:%.mm
 	$(CXX) $(CXXFLAGS) -ObjC++ -fobjc-weak -fobjc-arc -c -o $@ $<
 all: $(EXE)
 	@echo Build complete
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_sdl_metal/main.mm
+++ b/examples/example_sdl_metal/main.mm
@ -0,0 +1,179 @@
 // Dear ImGui: standalone example application for SDL2 + Metal
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_metal.h"
 #include <stdio.h>
 #include <SDL.h>
 #import <Metal/Metal.h>
 #import <QuartzCore/QuartzCore.h>
 int main(int, char**)
 {
    // Setup Dear ImGui binding
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
    // Setup style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Setup SDL
    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
    {
        printf("Error: %s\n", SDL_GetError());
        return -1;
    }
    // Inform SDL that we will be using metal for rendering. Without this hint initialization of metal renderer may fail.
    SDL_SetHint(SDL_HINT_RENDER_DRIVER, "metal");
    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL+Metal example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
    if (window == NULL)
    {
        printf("Error creating window: %s\n", SDL_GetError());
        return -2;
    }
    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (renderer == NULL)
    {
        printf("Error creating renderer: %s\n", SDL_GetError());
        return -3;
    }
    CAMetalLayer* layer = (__bridge CAMetalLayer*)SDL_RenderGetMetalLayer(renderer);
    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
    ImGui_ImplMetal_Init(layer.device);
    ImGui_ImplSDL2_InitForMetal(window);
    id<MTLCommandQueue> commandQueue = [layer.device newCommandQueue];
    MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor new];
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f};
    // Main loop
    bool done = false;
    while (!done)
    {
        @autoreleasepool
        {
            // Poll and handle events (inputs, window resize, etc.)
            // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
            // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
            // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
            // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
            SDL_Event event;
            while (SDL_PollEvent(&event))
            {
                ImGui_ImplSDL2_ProcessEvent(&event);
                if (event.type == SDL_QUIT)
                    done = true;
                if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                    done = true;
            }
            int width, height;
            SDL_GetRendererOutputSize(renderer, &width, &height);
            layer.drawableSize = CGSizeMake(width, height);
            id<CAMetalDrawable> drawable = [layer nextDrawable];
            id<MTLCommandBuffer> commandBuffer = [commandQueue commandBuffer];
            renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
            renderPassDescriptor.colorAttachments[0].texture = drawable.texture;
            renderPassDescriptor.colorAttachments[0].loadAction = MTLLoadActionClear;
            renderPassDescriptor.colorAttachments[0].storeAction = MTLStoreActionStore;
            id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
            [renderEncoder pushDebugGroup:@"ImGui demo"];
            // Start the Dear ImGui frame
            ImGui_ImplMetal_NewFrame(renderPassDescriptor);
            ImGui_ImplSDL2_NewFrame(window);
            ImGui::NewFrame();
            // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
            if (show_demo_window)
                ImGui::ShowDemoWindow(&show_demo_window);
            // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
            {
                static float f = 0.0f;
                static int counter = 0;
                ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
                ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
                ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
                ImGui::Checkbox("Another Window", &show_another_window);
                ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
                ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
                if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                    counter++;
                ImGui::SameLine();
                ImGui::Text("counter = %d", counter);
                ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
                ImGui::End();
            }
            // 3. Show another simple window.
            if (show_another_window)
            {
                ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
                ImGui::Text("Hello from another window!");
                if (ImGui::Button("Close Me"))
                    show_another_window = false;
                ImGui::End();
            }
            // Rendering
            ImGui::Render();
            ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
            [renderEncoder popDebugGroup];
            [renderEncoder endEncoding];
            [commandBuffer presentDrawable:drawable];
            [commandBuffer commit];
        }
    }
    // Cleanup
    ImGui_ImplMetal_Shutdown();
    ImGui_ImplSDL2_Shutdown();
    ImGui::DestroyContext();
    SDL_DestroyRenderer(renderer);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
 }
--- a/examples/example_sdl_opengl2/Makefile
+++ b/examples/example_sdl_opengl2/Makefile
@ -0,0 +1,78 @@
 #
 # Cross Platform Makefile
 # Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
 #
 # You will need SDL2 (http://www.libsdl.org):
 # Linux:
 #   apt-get install libsdl2-dev
 # Mac OS X:
 #   brew install sdl2
 # MSYS2:
 #   pacman -S mingw-w64-i686-SDL
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_sdl_opengl2
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CXXFLAGS = -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
 	LIBS += -lGL -ldl `sdl2-config --libs`
 	CXXFLAGS += `sdl2-config --cflags`
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
 	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 	CXXFLAGS += `sdl2-config --cflags`
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
 	ECHO_MESSAGE = "MinGW"
 	LIBS += -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
 	CXXFLAGS += `pkg-config --cflags sdl2`
 	CFLAGS = $(CXXFLAGS)
 endif
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_sdl_opengl2/README.md
+++ b/examples/example_sdl_opengl2/README.md
@ -0,0 +1,25 @@
 # How to Build
 - On Windows with Visual Studio's CLI
 ```
 set SDL2_DIR=path_to_your_sdl2_folder
 cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
 #          ^^ include paths                  ^^ source files                                                           ^^ output exe                    ^^ output dir   ^^ libraries
 # or for 64-bit:
 cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp /FeDebug/example_sdl_opengl2.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
 ```
 - On Linux and similar Unixes
 ```
 c++ `sdl2-config --cflags` -I .. -I ../.. main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp ../../imgui*.cpp `sdl2-config --libs` -lGL
 ```
 - On Mac OS X
 ```
 brew install sdl2
 c++ `sdl2-config --cflags` -I .. -I ../.. main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl2.cpp ../../imgui*.cpp `sdl2-config --libs` -framework OpenGl
 ```
--- a/examples/example_sdl_opengl2/build_win32.bat
+++ b/examples/example_sdl_opengl2/build_win32.bat
@ -0,0 +1,8 @@
@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 set OUT_DIR=Debug
 set OUT_EXE=example_sdl_opengl2
 set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include
 set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl2.cpp ..\..\imgui*.cpp
 set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib
 mkdir %OUT_DIR%
 cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console
--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj
@ -0,0 +1,180 @@
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--- a/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
+++ b/examples/example_sdl_opengl2/example_sdl_opengl2.vcxproj.filters
@ -0,0 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
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--- a/examples/example_sdl_opengl2/main.cpp
+++ b/examples/example_sdl_opengl2/main.cpp
@ -0,0 +1,154 @@
 // dear imgui: standalone example application for SDL2 + OpenGL
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 // **DO NOT USE THIS CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)**
 // **Prefer using the code in the example_sdl_opengl3/ folder**
 // See imgui_impl_sdl.cpp for details.
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_opengl2.h"
 #include <stdio.h>
 #include <SDL.h>
 #include <SDL_opengl.h>
 // Main code
 int main(int, char**)
 {
    // Setup SDL
    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 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_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
    SDL_GLContext gl_context = SDL_GL_CreateContext(window);
    SDL_GL_MakeCurrent(window, gl_context);
    SDL_GL_SetSwapInterval(1); // Enable vsync
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
    ImGui_ImplOpenGL2_Init();
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    bool done = false;
    while (!done)
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        SDL_Event event;
        while (SDL_PollEvent(&event))
        {
            ImGui_ImplSDL2_ProcessEvent(&event);
            if (event.type == SDL_QUIT)
                done = true;
        }
        // Start the Dear ImGui frame
        ImGui_ImplOpenGL2_NewFrame();
        ImGui_ImplSDL2_NewFrame(window);
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
        glClear(GL_COLOR_BUFFER_BIT);
        //glUseProgram(0); // You may want this if using this code in an OpenGL 3+ context where shaders may be bound
        ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
        SDL_GL_SwapWindow(window);
    }
    // Cleanup
    ImGui_ImplOpenGL2_Shutdown();
    ImGui_ImplSDL2_Shutdown();
    ImGui::DestroyContext();
    SDL_GL_DeleteContext(gl_context);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
 }
--- a/examples/example_sdl_opengl3/Makefile
+++ b/examples/example_sdl_opengl3/Makefile
@ -0,0 +1,107 @@
 #
 # Cross Platform Makefile
 # Compatible with MSYS2/MINGW, Ubuntu 14.04.1 and Mac OS X
 #
 # You will need SDL2 (http://www.libsdl.org):
 # Linux:
 #   apt-get install libsdl2-dev
 # Mac OS X:
 #   brew install sdl2
 # MSYS2:
 #   pacman -S mingw-w64-i686-SDL
 #
 #CXX = g++
 #CXX = clang++
 EXE = example_sdl_opengl3
 SOURCES = main.cpp
 SOURCES += ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp
 SOURCES += ../../imgui.cpp ../../imgui_demo.cpp ../../imgui_draw.cpp ../../imgui_widgets.cpp
 OBJS = $(addsuffix .o, $(basename $(notdir $(SOURCES))))
 UNAME_S := $(shell uname -s)
 CXXFLAGS = -I../ -I../../
 CXXFLAGS += -g -Wall -Wformat
 LIBS =
 ##---------------------------------------------------------------------
 ## OPENGL LOADER
 ##---------------------------------------------------------------------
 ## Using OpenGL loader: gl3w [default]
 SOURCES += ../libs/gl3w/GL/gl3w.c
 CXXFLAGS += -I../libs/gl3w -DIMGUI_IMPL_OPENGL_LOADER_GL3W
 ## Using OpenGL loader: glew
 ## (This assumes a system-wide installation)
 # CXXFLAGS += -lGLEW -DIMGUI_IMPL_OPENGL_LOADER_GLEW
 ## Using OpenGL loader: glad
 # SOURCES += ../libs/glad/src/glad.c
 # CXXFLAGS += -I../libs/glad/include -DIMGUI_IMPL_OPENGL_LOADER_GLAD
 ## Using OpenGL loader: glbinding
 ## This assumes a system-wide installation
 ## of either version 3.0.0 (or newer)
 # CXXFLAGS += -lglbinding -DIMGUI_IMPL_OPENGL_LOADER_GLBINDING3
 ## or the older version 2.x
 # CXXFLAGS += -lglbinding -DIMGUI_IMPL_OPENGL_LOADER_GLBINDING2
 ##---------------------------------------------------------------------
 ## BUILD FLAGS PER PLATFORM
 ##---------------------------------------------------------------------
 ifeq ($(UNAME_S), Linux) #LINUX
 	ECHO_MESSAGE = "Linux"
 	LIBS += -lGL -ldl `sdl2-config --libs`
 	CXXFLAGS += `sdl2-config --cflags`
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(UNAME_S), Darwin) #APPLE
 	ECHO_MESSAGE = "Mac OS X"
 	LIBS += -framework OpenGL -framework Cocoa -framework IOKit -framework CoreVideo `sdl2-config --libs`
 	LIBS += -L/usr/local/lib -L/opt/local/lib
 	CXXFLAGS += `sdl2-config --cflags`
 	CXXFLAGS += -I/usr/local/include -I/opt/local/include
 	CFLAGS = $(CXXFLAGS)
 endif
 ifeq ($(findstring MINGW,$(UNAME_S)),MINGW)
   ECHO_MESSAGE = "MinGW"
   LIBS += -lgdi32 -lopengl32 -limm32 `pkg-config --static --libs sdl2`
   CXXFLAGS += `pkg-config --cflags sdl2`
   CFLAGS = $(CXXFLAGS)
 endif
 ##---------------------------------------------------------------------
 ## BUILD RULES
 ##---------------------------------------------------------------------
 %.o:%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../../%.cpp
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
 %.o:../libs/gl3w/GL/%.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 %.o:../libs/glad/src/%.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 all: $(EXE)
 	@echo Build complete for $(ECHO_MESSAGE)
 $(EXE): $(OBJS)
 	$(CXX) -o $@ $^ $(CXXFLAGS) $(LIBS)
 clean:
 	rm -f $(EXE) $(OBJS)
--- a/examples/example_sdl_opengl3/README.md
+++ b/examples/example_sdl_opengl3/README.md
@ -0,0 +1,25 @@
 # How to Build
 - On Windows with Visual Studio's CLI
 ```
 set SDL2_DIR=path_to_your_sdl2_folder
 cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
 #          ^^ include paths                                 ^^ source files                                                                                  ^^ output exe                    ^^ output dir   ^^ libraries
 # or for 64-bit:
 cl /Zi /MD /I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c /FeDebug/example_sdl_opengl3.exe /FoDebug/ /link /libpath:%SDL2_DIR%\lib\x64 SDL2.lib SDL2main.lib opengl32.lib /subsystem:console
 ```
 - On Linux and similar Unixes
 ```
 c++ `sdl2-config --cflags` -I .. -I ../.. -I ../libs/gl3w main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp ../../imgui*.cpp ../libs/gl3w/GL/gl3w.c `sdl2-config --libs` -lGL -ldl
 ```
 - On Mac OS X
 ```
 brew install sdl2
 c++ `sdl2-config --cflags` -I .. -I ../.. -I ../libs/gl3w main.cpp ../imgui_impl_sdl.cpp ../imgui_impl_opengl3.cpp ../../imgui*.cpp ../libs/gl3w/GL/gl3w.c `sdl2-config --libs` -framework OpenGl -framework CoreFoundation
 ```
--- a/examples/example_sdl_opengl3/build_win32.bat
+++ b/examples/example_sdl_opengl3/build_win32.bat
@ -0,0 +1,8 @@
@REM Build for Visual Studio compiler. Run your copy of vcvars32.bat or vcvarsall.bat to setup command-line compiler.
 set OUT_DIR=Debug
 set OUT_EXE=example_sdl_opengl3
 set INCLUDES=/I.. /I..\.. /I%SDL2_DIR%\include /I..\libs\gl3w
 set SOURCES=main.cpp ..\imgui_impl_sdl.cpp ..\imgui_impl_opengl3.cpp ..\..\imgui*.cpp ..\libs\gl3w\GL\gl3w.c
 set LIBS=/libpath:%SDL2_DIR%\lib\x86 SDL2.lib SDL2main.lib opengl32.lib
 mkdir %OUT_DIR%
 cl /nologo /Zi /MD %INCLUDES% %SOURCES% /Fe%OUT_DIR%/%OUT_EXE%.exe /Fo%OUT_DIR%/ /link %LIBS% /subsystem:console
--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj
@ -0,0 +1,183 @@
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--- a/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
+++ b/examples/example_sdl_opengl3/example_sdl_opengl3.vcxproj.filters
@ -0,0 +1,70 @@
 <?xml version="1.0" encoding="utf-8"?>
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--- a/examples/example_sdl_opengl3/main.cpp
+++ b/examples/example_sdl_opengl3/main.cpp
@ -0,0 +1,212 @@
 // dear imgui: standalone example application for SDL2 + OpenGL
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // (SDL is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan/Metal graphics context creation, etc.)
 // (GL3W is a helper library to access OpenGL functions since there is no standard header to access modern OpenGL functions easily. Alternatives are GLEW, Glad, etc.)
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_opengl3.h"
 #include <stdio.h>
 #include <SDL.h>
 // About Desktop OpenGL function loaders:
 //  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
 //  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
 //  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
 #include <GL/gl3w.h>            // Initialize with gl3wInit()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
 #include <GL/glew.h>            // Initialize with glewInit()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
 #include <glad/glad.h>          // Initialize with gladLoadGL()
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
 #define GLFW_INCLUDE_NONE       // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
 #include <glbinding/Binding.h>  // Initialize with glbinding::Binding::initialize()
 #include <glbinding/gl/gl.h>
 using namespace gl;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
 #define GLFW_INCLUDE_NONE       // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
 #include <glbinding/glbinding.h>// Initialize with glbinding::initialize()
 #include <glbinding/gl/gl.h>
 using namespace gl;
 #else
 #include IMGUI_IMPL_OPENGL_LOADER_CUSTOM
 #endif
 // Main code
 int main(int, char**)
 {
    // Setup SDL
    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
    {
        printf("Error: %s\n", SDL_GetError());
        return -1;
    }
    // Decide GL+GLSL versions
 #if __APPLE__
    // GL 3.2 Core + GLSL 150
    const char* glsl_version = "#version 150";
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); // Always required on Mac
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
 #else
    // GL 3.0 + GLSL 130
    const char* glsl_version = "#version 130";
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
 #endif
    // Create window with graphics context
    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
    SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+OpenGL3 example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
    SDL_GLContext gl_context = SDL_GL_CreateContext(window);
    SDL_GL_MakeCurrent(window, gl_context);
    SDL_GL_SetSwapInterval(1); // Enable vsync
    // Initialize OpenGL loader
 #if defined(IMGUI_IMPL_OPENGL_LOADER_GL3W)
    bool err = gl3wInit() != 0;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLEW)
    bool err = glewInit() != GLEW_OK;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
    bool err = gladLoadGL() == 0;
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
    bool err = false;
    glbinding::Binding::initialize();
 #elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
    bool err = false;
    glbinding::initialize([](const char* name) { return (glbinding::ProcAddress)SDL_GL_GetProcAddress(name); });
 #else
    bool err = false; // If you use IMGUI_IMPL_OPENGL_LOADER_CUSTOM, your loader is likely to requires some form of initialization.
 #endif
    if (err)
    {
        fprintf(stderr, "Failed to initialize OpenGL loader!\n");
        return 1;
    }
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplSDL2_InitForOpenGL(window, gl_context);
    ImGui_ImplOpenGL3_Init(glsl_version);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    bool done = false;
    while (!done)
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        SDL_Event event;
        while (SDL_PollEvent(&event))
        {
            ImGui_ImplSDL2_ProcessEvent(&event);
            if (event.type == SDL_QUIT)
                done = true;
            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_CLOSE && event.window.windowID == SDL_GetWindowID(window))
                done = true;
        }
        // Start the Dear ImGui frame
        ImGui_ImplOpenGL3_NewFrame();
        ImGui_ImplSDL2_NewFrame(window);
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
        glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
        glClear(GL_COLOR_BUFFER_BIT);
        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
        SDL_GL_SwapWindow(window);
    }
    // Cleanup
    ImGui_ImplOpenGL3_Shutdown();
    ImGui_ImplSDL2_Shutdown();
    ImGui::DestroyContext();
    SDL_GL_DeleteContext(gl_context);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
 }
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--- a/examples/example_sdl_vulkan/main.cpp
+++ b/examples/example_sdl_vulkan/main.cpp
@ -0,0 +1,527 @@
 // dear imgui: standalone example application for SDL2 + Vulkan
 // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
 // Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
 // - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
 //   You will use those if you want to use this rendering back-end in your engine/app.
 // - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
 //   the back-end itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
 // Read comments in imgui_impl_vulkan.h.
 #include "imgui.h"
 #include "imgui_impl_sdl.h"
 #include "imgui_impl_vulkan.h"
 #include <stdio.h>          // printf, fprintf
 #include <stdlib.h>         // abort
 #include <SDL.h>
 #include <SDL_vulkan.h>
 #include <vulkan/vulkan.h>
 //#define IMGUI_UNLIMITED_FRAME_RATE
 #ifdef _DEBUG
 #define IMGUI_VULKAN_DEBUG_REPORT
 #endif
 static VkAllocationCallbacks*   g_Allocator = NULL;
 static VkInstance               g_Instance = VK_NULL_HANDLE;
 static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
 static VkDevice                 g_Device = VK_NULL_HANDLE;
 static uint32_t                 g_QueueFamily = (uint32_t)-1;
 static VkQueue                  g_Queue = VK_NULL_HANDLE;
 static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
 static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
 static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
 static ImGui_ImplVulkanH_Window g_MainWindowData;
 static uint32_t                 g_MinImageCount = 2;
 static bool                     g_SwapChainRebuild = false;
 static int                      g_SwapChainResizeWidth = 0;
 static int                      g_SwapChainResizeHeight = 0;
 static void check_vk_result(VkResult err)
 {
    if (err == 0) return;
    printf("VkResult %d\n", err);
    if (err < 0)
        abort();
 }
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
 static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
 {
    (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
    fprintf(stderr, "[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
    return VK_FALSE;
 }
 #endif // IMGUI_VULKAN_DEBUG_REPORT
 static void SetupVulkan(const char** extensions, uint32_t extensions_count)
 {
    VkResult err;
    // Create Vulkan Instance
    {
        VkInstanceCreateInfo create_info = {};
        create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
        create_info.enabledExtensionCount = extensions_count;
        create_info.ppEnabledExtensionNames = extensions;
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
        // Enabling multiple validation layers grouped as LunarG standard validation
        const char* layers[] = { "VK_LAYER_LUNARG_standard_validation" };
        create_info.enabledLayerCount = 1;
        create_info.ppEnabledLayerNames = layers;
        // Enable debug report extension (we need additional storage, so we duplicate the user array to add our new extension to it)
        const char** extensions_ext = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
        memcpy(extensions_ext, extensions, extensions_count * sizeof(const char*));
        extensions_ext[extensions_count] = "VK_EXT_debug_report";
        create_info.enabledExtensionCount = extensions_count + 1;
        create_info.ppEnabledExtensionNames = extensions_ext;
        // Create Vulkan Instance
        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
        check_vk_result(err);
        free(extensions_ext);
        // Get the function pointer (required for any extensions)
        auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
        IM_ASSERT(vkCreateDebugReportCallbackEXT != NULL);
        // Setup the debug report callback
        VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
        debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
        debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
        debug_report_ci.pfnCallback = debug_report;
        debug_report_ci.pUserData = NULL;
        err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
        check_vk_result(err);
 #else
        // Create Vulkan Instance without any debug feature
        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
        check_vk_result(err);
        IM_UNUSED(g_DebugReport);
 #endif
    }
    // Select GPU
    {
        uint32_t gpu_count;
        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
        check_vk_result(err);
        IM_ASSERT(gpu_count > 0);
        VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
        err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
        check_vk_result(err);
        // If a number >1 of GPUs got reported, you should find the best fit GPU for your purpose
        // e.g. VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU if available, or with the greatest memory available, etc.
        // for sake of simplicity we'll just take the first one, assuming it has a graphics queue family.
        g_PhysicalDevice = gpus[0];
        free(gpus);
    }
    // Select graphics queue family
    {
        uint32_t count;
        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, NULL);
        VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
        vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, queues);
        for (uint32_t i = 0; i < count; i++)
            if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
            {
                g_QueueFamily = i;
                break;
            }
        free(queues);
        IM_ASSERT(g_QueueFamily != (uint32_t)-1);
    }
    // Create Logical Device (with 1 queue)
    {
        int device_extension_count = 1;
        const char* device_extensions[] = { "VK_KHR_swapchain" };
        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 = 1;
        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_PhysicalDevice, &create_info, g_Allocator, &g_Device);
        check_vk_result(err);
        vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
    }
    // Create Descriptor Pool
    {
        VkDescriptorPoolSize pool_sizes[] =
        {
            { 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 * IM_ARRAYSIZE(pool_sizes);
        pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
        pool_info.pPoolSizes = pool_sizes;
        err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
        check_vk_result(err);
    }
 }
 // All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
 // Your real engine/app may not use them.
 static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
 {
    wd->Surface = surface;
    // Check for WSI support
    VkBool32 res;
    vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
    if (res != VK_TRUE)
    {
        fprintf(stderr, "Error no WSI support on physical device 0\n");
        exit(-1);
    }
    // Select Surface Format
    const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
    const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
    wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
    // Select Present Mode
 #ifdef IMGUI_UNLIMITED_FRAME_RATE
    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
 #else
    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
 #endif
    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
    //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
    // Create SwapChain, RenderPass, Framebuffer, etc.
    IM_ASSERT(g_MinImageCount >= 2);
    ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount);
 }
 static void CleanupVulkan()
 {
    vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
 #ifdef IMGUI_VULKAN_DEBUG_REPORT
    // Remove the debug report callback
    auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
    vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
 #endif // IMGUI_VULKAN_DEBUG_REPORT
    vkDestroyDevice(g_Device, g_Allocator);
    vkDestroyInstance(g_Instance, g_Allocator);
 }
 static void CleanupVulkanWindow()
 {
    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, &g_MainWindowData, g_Allocator);
 }
 static void FrameRender(ImGui_ImplVulkanH_Window* wd)
 {
    VkResult err;
    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
    err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
    check_vk_result(err);
    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
    {
        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
        check_vk_result(err);
        err = vkResetFences(g_Device, 1, &fd->Fence);
        check_vk_result(err);
    }
    {
        err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
        check_vk_result(err);
        VkCommandBufferBeginInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
        info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
        err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
        check_vk_result(err);
    }
    {
        VkRenderPassBeginInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
        info.renderPass = wd->RenderPass;
        info.framebuffer = fd->Framebuffer;
        info.renderArea.extent.width = wd->Width;
        info.renderArea.extent.height = wd->Height;
        info.clearValueCount = 1;
        info.pClearValues = &wd->ClearValue;
        vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
    }
    // Record Imgui Draw Data and draw funcs into command buffer
    ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
    // Submit command buffer
    vkCmdEndRenderPass(fd->CommandBuffer);
    {
        VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
        VkSubmitInfo info = {};
        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
        info.waitSemaphoreCount = 1;
        info.pWaitSemaphores = &image_acquired_semaphore;
        info.pWaitDstStageMask = &wait_stage;
        info.commandBufferCount = 1;
        info.pCommandBuffers = &fd->CommandBuffer;
        info.signalSemaphoreCount = 1;
        info.pSignalSemaphores = &render_complete_semaphore;
        err = vkEndCommandBuffer(fd->CommandBuffer);
        check_vk_result(err);
        err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
        check_vk_result(err);
    }
 }
 static void FramePresent(ImGui_ImplVulkanH_Window* wd)
 {
    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
    VkPresentInfoKHR info = {};
    info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
    info.waitSemaphoreCount = 1;
    info.pWaitSemaphores = &render_complete_semaphore;
    info.swapchainCount = 1;
    info.pSwapchains = &wd->Swapchain;
    info.pImageIndices = &wd->FrameIndex;
    VkResult err = vkQueuePresentKHR(g_Queue, &info);
    check_vk_result(err);
    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->ImageCount; // Now we can use the next set of semaphores
 }
 int main(int, char**)
 {
    // Setup SDL
    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
    {
        printf("Error: %s\n", SDL_GetError());
        return -1;
    }
    // Setup window
    SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
    // Setup Vulkan
    uint32_t extensions_count = 0;
    SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, NULL);
    const char** extensions = new const char*[extensions_count];
    SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, extensions);
    SetupVulkan(extensions, extensions_count);
    delete[] extensions;
    // Create Window Surface
    VkSurfaceKHR surface;
    VkResult err;
    if (SDL_Vulkan_CreateSurface(window, g_Instance, &surface) == 0)
    {
        printf("Failed to create Vulkan surface.\n");
        return 1;
    }
    // Create Framebuffers
    int w, h;
    SDL_GetWindowSize(window, &w, &h);
    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
    SetupVulkanWindow(wd, surface, w, h);
    // Setup Dear ImGui context
    IMGUI_CHECKVERSION();
    ImGui::CreateContext();
    ImGuiIO& io = ImGui::GetIO(); (void)io;
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
    //io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
    // Setup Dear ImGui style
    ImGui::StyleColorsDark();
    //ImGui::StyleColorsClassic();
    // Setup Platform/Renderer bindings
    ImGui_ImplSDL2_InitForVulkan(window);
    ImGui_ImplVulkan_InitInfo init_info = {};
    init_info.Instance = g_Instance;
    init_info.PhysicalDevice = g_PhysicalDevice;
    init_info.Device = g_Device;
    init_info.QueueFamily = g_QueueFamily;
    init_info.Queue = g_Queue;
    init_info.PipelineCache = g_PipelineCache;
    init_info.DescriptorPool = g_DescriptorPool;
    init_info.Allocator = g_Allocator;
    init_info.MinImageCount = g_MinImageCount;
    init_info.ImageCount = wd->ImageCount;
    init_info.CheckVkResultFn = check_vk_result;
    ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
    // Load Fonts
    // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
    // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
    // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
    // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
    // - Read 'docs/FONTS.txt' for more instructions and details.
    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
    //io.Fonts->AddFontDefault();
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
    //IM_ASSERT(font != NULL);
    // Upload Fonts
    {
        // Use any command queue
        VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
        VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
        err = vkResetCommandPool(g_Device, command_pool, 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(command_buffer, &begin_info);
        check_vk_result(err);
        ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
        VkSubmitInfo end_info = {};
        end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
        end_info.commandBufferCount = 1;
        end_info.pCommandBuffers = &command_buffer;
        err = vkEndCommandBuffer(command_buffer);
        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_ImplVulkan_DestroyFontUploadObjects();
    }
    // Our state
    bool show_demo_window = true;
    bool show_another_window = false;
    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
    // Main loop
    bool done = false;
    while (!done)
    {
        // Poll and handle events (inputs, window resize, etc.)
        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
        SDL_Event event;
        while (SDL_PollEvent(&event))
        {
            ImGui_ImplSDL2_ProcessEvent(&event);
            if (event.type == SDL_QUIT)
                done = true;
            if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
            {
                g_SwapChainResizeWidth = (int)event.window.data1;
                g_SwapChainResizeHeight = (int)event.window.data2;
                g_SwapChainRebuild = true;
            }
        }
        if (g_SwapChainRebuild)
        {
            g_SwapChainRebuild = false;
            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
            ImGui_ImplVulkanH_CreateWindow(g_Instance, g_PhysicalDevice, g_Device, &g_MainWindowData, g_QueueFamily, g_Allocator, g_SwapChainResizeWidth, g_SwapChainResizeHeight, g_MinImageCount);
            g_MainWindowData.FrameIndex = 0;
        }
        // Start the Dear ImGui frame
        ImGui_ImplVulkan_NewFrame();
        ImGui_ImplSDL2_NewFrame(window);
        ImGui::NewFrame();
        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
        if (show_demo_window)
            ImGui::ShowDemoWindow(&show_demo_window);
        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
        {
            static float f = 0.0f;
            static int counter = 0;
            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
            ImGui::Checkbox("Another Window", &show_another_window);
            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
                counter++;
            ImGui::SameLine();
            ImGui::Text("counter = %d", counter);
            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
            ImGui::End();
        }
        // 3. Show another simple window.
        if (show_another_window)
        {
            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
            ImGui::Text("Hello from another window!");
            if (ImGui::Button("Close Me"))
                show_another_window = false;
            ImGui::End();
        }
        // Rendering
        ImGui::Render();
        memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
        FrameRender(wd);
        FramePresent(wd);
    }
    // Cleanup
    err = vkDeviceWaitIdle(g_Device);
    check_vk_result(err);
    ImGui_ImplVulkan_Shutdown();
    ImGui_ImplSDL2_Shutdown();
    ImGui::DestroyContext();
    CleanupVulkanWindow();
    CleanupVulkan();
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
 }
--- a/Show More
+++ b/Show More