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Backends: OpenGL3: Support older 2.x series of glbinding as loader for OpenGL3 (#3061)

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This removes the unversioned definition IMGUI_IMPL_OPENGL_LOADER_GLBINDING in favor of two versioned ones to choose explicitly.
References: #2870, 5e2329b98e
This commit is contained in:
David Kalnischkies
2020-02-20 15:49:15 +01:00
committed by omar
parent 4986dba270
commit ac4262ad01
6 changed files with 47 additions and 16 deletions
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11
examples/example_glfw_opengl3/main.cpp
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@ -17,9 +17,13 @@
#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_GLBINDING)
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2) || defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING3)
#define GLFW_INCLUDE_NONE // GLFW including OpenGL headers causes ambiguity or multiple definition errors.
#if defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING2)
#include <glbinding/Binding.h> // Initialize with glbinding::Binding::initialize()
#else
#include <glbinding/glbinding.h> // Initialize with glbinding::initialize()
#endif
#include <glbinding/gl/gl.h>
using namespace gl;
#else
@ -79,7 +83,10 @@ int main(int, char**)
bool err = glewInit() != GLEW_OK;
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLAD)
bool err = gladLoadGL() == 0;
#elif defined(IMGUI_IMPL_OPENGL_LOADER_GLBINDING)
#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