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Merge commit 'ae51a422787bc3b720ff1748c0219c8f33363427'

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Gary Talent
2024-05-31 19:18:26 -05:00
parent 6c71e1e24c ae51a42278
commit fc25c12dbc
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157
deps/imgui/docs/EXAMPLES.md vendored
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@ -10,67 +10,71 @@ integrating Dear ImGui in your own application/game/engine.
**Once Dear ImGui is setup and running, run and refer to `ImGui::ShowDemoWindow()` in imgui_demo.cpp for usage of the end-user API.**
You can find Windows binaries for some of those example applications at:
http://www.dearimgui.org/binaries
https://www.dearimgui.com/binaries
### Getting Started
Integration in a typical existing application, should take <20 lines when using standard backends.
At initialization:
call ImGui::CreateContext()
call ImGui_ImplXXXX_Init() for each backend.
```cpp
At initialization:
call ImGui::CreateContext()
call ImGui_ImplXXXX_Init() for each backend.
At the beginning of your frame:
call ImGui_ImplXXXX_NewFrame() for each backend.
call ImGui::NewFrame()
At the beginning of your frame:
call ImGui_ImplXXXX_NewFrame() for each backend.
call ImGui::NewFrame()
At the end of your frame:
call ImGui::Render()
call ImGui_ImplXXXX_RenderDrawData() for your Renderer backend.
At the end of your frame:
call ImGui::Render()
call ImGui_ImplXXXX_RenderDrawData() for your Renderer backend.
At shutdown:
call ImGui_ImplXXXX_Shutdown() for each backend.
call ImGui::DestroyContext()
At shutdown:
call ImGui_ImplXXXX_Shutdown() for each backend.
call ImGui::DestroyContext()
```
Example (using [backends/imgui_impl_win32.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_win32.cpp) + [backends/imgui_impl_dx11.cpp](https://github.com/ocornut/imgui/blob/master/backends/imgui_impl_dx11.cpp)):
// Create a Dear ImGui context, setup some options
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO();
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable some options
```cpp
// Create a Dear ImGui context, setup some options
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO();
io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable some options
// Initialize Platform + Renderer backends (here: using imgui_impl_win32.cpp + imgui_impl_dx11.cpp)
ImGui_ImplWin32_Init(my_hwnd);
ImGui_ImplDX11_Init(my_d3d_device, my_d3d_device_context);
// Initialize Platform + Renderer backends (here: using imgui_impl_win32.cpp + imgui_impl_dx11.cpp)
ImGui_ImplWin32_Init(my_hwnd);
ImGui_ImplDX11_Init(my_d3d_device, my_d3d_device_context);
// Application main loop
while (true)
{
// Beginning of frame: update Renderer + Platform backend, start Dear ImGui frame
ImGui_ImplDX11_NewFrame();
ImGui_ImplWin32_NewFrame();
ImGui::NewFrame();
// Application main loop
while (true)
{
// Beginning of frame: update Renderer + Platform backend, start Dear ImGui frame
ImGui_ImplDX11_NewFrame();
ImGui_ImplWin32_NewFrame();
ImGui::NewFrame();
// Any application code here
ImGui::Text("Hello, world!");
// Any application code here
ImGui::Text("Hello, world!");
// End of frame: render Dear ImGui
ImGui::Render();
ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
// End of frame: render Dear ImGui
ImGui::Render();
ImGui_ImplDX11_RenderDrawData(ImGui::GetDrawData());
// Swap
g_pSwapChain->Present(1, 0);
}
// Swap
g_pSwapChain->Present(1, 0);
}
// Shutdown
ImGui_ImplDX11_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
// Shutdown
ImGui_ImplDX11_Shutdown();
ImGui_ImplWin32_Shutdown();
ImGui::DestroyContext();
```
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.
Please read FAQ at http://www.dearimgui.org/faq
Please read FAQ at https://www.dearimgui.com/faq
If you are using any of the backends provided here, you can add the backends/imgui_impl_xxxx(.cpp,.h)
files to your project and use as-in. Each imgui_impl_xxxx.cpp file comes with its own individual
@ -100,15 +104,10 @@ OSX + OpenGL2 example. <BR>
(NB: imgui_impl_osx.mm is currently not as feature complete as other platforms backends.
You may prefer to use the GLFW Or SDL backends, which will also support Windows and Linux.)
[example_emscripten_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_emscripten_opengl3/) <BR>
Emcripten + SDL2 + OpenGL3+/ES2/ES3 example. <BR>
= main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp <BR>
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_emscripten_wgpu/](https://github.com/ocornut/imgui/blob/master/examples/example_emscripten_wgpu/) <BR>
Emcripten + GLFW + WebGPU example. <BR>
[example_glfw_wgpu/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_wgpu/) <BR>
GLFW + WebGPU example. Supports Emscripten (web) or Dawn (desktop) <BR>
= main.cpp + imgui_impl_glfw.cpp + imgui_impl_wgpu.cpp
Note that the 'example_glfw_opengl3' and 'example_sdl2_opengl3' examples also supports Emscripten!
[example_glfw_metal/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_metal/) <BR>
GLFW (Mac) + Metal example. <BR>
@ -117,18 +116,18 @@ GLFW (Mac) + Metal example. <BR>
[example_glfw_opengl2/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_opengl2/) <BR>
GLFW + OpenGL2 example (legacy, fixed pipeline). <BR>
= main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl2.cpp <BR>
**DO NOT USE THIS IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)** <BR>
**DO NOT USE THIS IF YOUR CODE/ENGINE IS USING MODERN GL or WEBGL (SHADERS, VBO, VAO, etc.)** <BR>
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
If your code is using GL3+ context or any semi modern GL calls, using this renderer is likely to
make things more complicated, will require your code to reset many GL attributes to their initial
state, and might confuse your GPU driver. One star, not recommended.
[example_glfw_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_opengl3/) <BR>
GLFW (Win32, Mac, Linux) + OpenGL3+/ES2/ES3 example (modern, programmable pipeline). <BR>
= main.cpp + imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp <BR>
This uses more modern OpenGL calls and custom shaders. <BR>
This may actually also work with OpenGL 2.x contexts! <BR>
Prefer using that if you are using modern OpenGL in your application (anything with shaders).
This uses more modern GL calls and custom shaders.<BR>
This support building with Emscripten and targeting WebGL.<BR>
Prefer using that if you are using modern GL or WebGL in your application.
[example_glfw_vulkan/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_vulkan/) <BR>
GLFW (Win32, Mac, Linux) + Vulkan example. <BR>
@ -147,39 +146,39 @@ Null example, compile and link imgui, create context, run headless with no input
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/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl_directx11/) <BR>
[example_sdl2_directx11/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_directx11/) <BR>
SDL2 + DirectX11 example, Windows only. <BR>
= main.cpp + imgui_impl_sdl.cpp + imgui_impl_dx11.cpp <BR>
This to demonstrate usage of DirectX with SDL.
= main.cpp + imgui_impl_sdl2.cpp + imgui_impl_dx11.cpp <BR>
This to demonstrate usage of DirectX with SDL2.
[example_sdl_metal/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl_metal/) <BR>
SDL2 (Mac) + Metal example. <BR>
= main.mm + imgui_impl_sdl.cpp + imgui_impl_metal.mm
[example_sdl2_metal/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_metal/) <BR>
SDL2 + Metal example, Mac only. <BR>
= main.mm + imgui_impl_sdl2.cpp + imgui_impl_metal.mm
[example_sdl_opengl2/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl_opengl2/) <BR>
[example_sdl2_opengl2/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_opengl2/) <BR>
SDL2 (Win32, Mac, Linux etc.) + OpenGL example (legacy, fixed pipeline). <BR>
= main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl2.cpp <BR>
**DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING MODERN OPENGL (SHADERS, VBO, VAO, etc.)** <BR>
= main.cpp + imgui_impl_sdl2.cpp + imgui_impl_opengl2.cpp <BR>
**DO NOT USE OPENGL2 CODE IF YOUR CODE/ENGINE IS USING GL OR WEBGL (SHADERS, VBO, VAO, etc.)** <BR>
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
If your code is using GL3+ context or any semi modern GL calls, using this renderer is likely to
make things more complicated, will require your code to reset many GL attributes to their initial
state, and might confuse your GPU driver. One star, not recommended.
[example_sdl_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl_opengl3/) <BR>
[example_sdl2_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_opengl3/) <BR>
SDL2 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example. <BR>
= main.cpp + imgui_impl_sdl.cpp + imgui_impl_opengl3.cpp <BR>
This uses more modern OpenGL calls and custom shaders. <BR>
This may actually also work with OpenGL 2.x contexts! <BR>
= main.cpp + imgui_impl_sdl2.cpp + imgui_impl_opengl3.cpp <BR>
This uses more modern GL calls and custom shaders. <BR>
This support building with Emscripten and targeting WebGL.<BR>
Prefer using that if you are using modern GL or WebGL in your application.
[example_sdl_sdlrenderer/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl_sdlrenderer/) <BR>
SDL2 (Win32, Mac, Linux, etc.) + SDL_Renderer (most graphics backends are supported underneath) <BR>
= main.cpp + imgui_impl_sdl.cpp + imgui_impl_sdlrenderer.cpp <BR>
This requires SDL 2.0.17+ (expected to release November 2021) <BR>
We do not really recommend using SDL_Renderer as it is a rather primitive API.
[example_sdl2_sdlrenderer2/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_sdlrenderer2/) <BR>
SDL2 (Win32, Mac, Linux, etc.) + SDL_Renderer for SDL2 (most graphics backends are supported underneath) <BR>
= main.cpp + imgui_impl_sdl2.cpp + imgui_impl_sdlrenderer.cpp <BR>
This requires SDL 2.0.18+ (released November 2021) <BR>
[example_sdl_vulkan/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl_vulkan/) <BR>
[example_sdl2_vulkan/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_vulkan/) <BR>
SDL2 (Win32, Mac, Linux, etc.) + Vulkan example. <BR>
= main.cpp + imgui_impl_sdl.cpp + imgui_impl_vulkan.cpp <BR>
= main.cpp + imgui_impl_sdl2.cpp + imgui_impl_vulkan.cpp <BR>
This is quite long and tedious, because: Vulkan. <BR>
For this example, the main.cpp file exceptionally use helpers function from imgui_impl_vulkan.h/cpp.
@ -200,8 +199,12 @@ DirectX12 example, Windows only. <BR>
= main.cpp + imgui_impl_win32.cpp + imgui_impl_dx12.cpp <BR>
This is quite long and tedious, because: DirectX12.
[example_win32_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_win32_opengl3/) <BR>
Raw Windows + OpenGL3 + example (modern, programmable pipeline) <BR>
= main.cpp + imgui_impl_win32.cpp + imgui_impl_opengl3.cpp <BR>
### Miscallaneous
### Miscellaneous
**Building**