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Added CMake option SDL_gpu_USE_SYSTEM_GLEW so that the bundled GLEW can be the default for proper GL 3+ support.
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CMakeLists.txt
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CMakeLists.txt
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option(SDL_gpu_DISABLE_GLES_2 "Disable OpenGLES 2.X renderer" OFF)
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option(SDL_gpu_DISABLE_GLES_3 "Disable OpenGLES 3.X renderer" OFF)
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option(SDL_gpu_USE_SYSTEM_GLEW "Attempt to use the system GLEW library (may not support GL 3+)" OFF)
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if(APPLE)
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if(IOS)
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# iOS 8 may need the framework option
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add_definitions("-DSDL_GPU_DISABLE_OPENGL_4")
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endif (SDL_gpu_DISABLE_OPENGL_4)
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# If glew is not found here, we’ll use the bundled version
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find_package(GLEW)
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if(NOT GLEW_FOUND)
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message(" Using bundled version of GLEW")
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endif(NOT GLEW_FOUND)
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if(SDL_gpu_USE_SYSTEM_GLEW)
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# If glew is not found here, we’ll use the bundled version
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find_package(GLEW)
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endif()
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if(NOT GLEW_FOUND)
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message(" Using bundled version of GLEW")
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endif(NOT GLEW_FOUND)
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if (NOT SDL_gpu_DISABLE_OPENGL)