text: // dear imgui: Renderer for modern OpenGL with shaders / programmatic pipeline
  // - Desktop GL: 2.x 3.x 4.x
  // - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0)
  // This needs to be used along with a Platform Binding (e.g. GLFW, SDL, Win32, custom..)
  
  // Implemented features:
  //  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture identifier as void*/ImTextureID. Read the FAQ about ImTextureID!
  //  [x] Renderer: Desktop GL only: Support for large meshes (64k+ vertices) with 16-bit indices.
  
  // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this.
  // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp.
  // https://github.com/ocornut/imgui
  
  // About Desktop OpenGL function loaders:
  //  Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers.
  //  Helper libraries are often used for this purpose! Here we are supporting a few common ones (gl3w, glew, glad).
  //  You may use another loader/header of your choice (glext, glLoadGen, etc.), or chose to manually implement your own.
  
  // About GLSL version:
  //  The 'glsl_version' initialization parameter should be NULL (default) or a "#version XXX" string.
  //  On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es"
  //  Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp.
  
  #pragma once
  
  namespace MangoHud {
  
  void GetOpenGLVersion(int& major, int& minor, bool& isGLES);
  
  // Backend API
  IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr);
  IMGUI_IMPL_API void     ImGui_ImplOpenGL3_Shutdown();
  IMGUI_IMPL_API void     ImGui_ImplOpenGL3_NewFrame();
  IMGUI_IMPL_API void     ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data);
  
  // (Optional) Called by Init/NewFrame/Shutdown
  //IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateFontsTexture();
  //IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyFontsTexture();
  //IMGUI_IMPL_API bool     ImGui_ImplOpenGL3_CreateDeviceObjects();
  //IMGUI_IMPL_API void     ImGui_ImplOpenGL3_DestroyDeviceObjects();
  
  }
  