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third_party/imgui/examples/example_qnx_opengl3/README.md

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+# Dear ImGui QNX Screen + OpenGL ES 3 example
+
+This example uses:
+
+- `imgui_impl_qnx.cpp` as the QNX Screen platform backend
+- `imgui_impl_opengl3.cpp` as the renderer backend
+- EGL to create an OpenGL ES 3 context and Screen window surface
+
+`imgui_impl_opengl3.cpp` supports desktop OpenGL and OpenGL ES. On QNX this
+example compiles it with `IMGUI_IMPL_OPENGL_ES3` and uses `#version 300 es`.
+No separate Screen/OpenGL renderer backend is required.
+
+## Build
+
+Load the QNX SDP environment, then run:
+
+```sh
+cd examples/example_qnx_opengl3
+make
+```
+
+The QNX recursive make files build for the CPUs enabled in your SDP
+configuration and install the program as `example_qnx_opengl3`.
+
+## Input
+
+The application polls its `screen_context_t` event queue and forwards every
+non-`SCREEN_EVENT_NONE` event to `ImGui_ImplQNX_ProcessEvent()`.
+Escape exits the example.