mirror of
https://github.com/Perlmint/glew-cmake.git
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68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/* ------------------------------------------------------------------------ */
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const GLubyte * GLEWAPIENTRY glewGetErrorString (GLenum error)
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{
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static const GLubyte* _glewErrorString[] =
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{
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(const GLubyte*)"No error",
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(const GLubyte*)"Missing GL version",
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(const GLubyte*)"GL 1.1 and up are not supported",
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(const GLubyte*)"GLX 1.2 and up are not supported",
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(const GLubyte*)"Unknown error"
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};
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const size_t max_error = sizeof(_glewErrorString)/sizeof(*_glewErrorString) - 1;
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return _glewErrorString[(size_t)error > max_error ? max_error : (size_t)error];
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}
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const GLubyte * GLEWAPIENTRY glewGetString (GLenum name)
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{
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static const GLubyte* _glewString[] =
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{
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(const GLubyte*)NULL,
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(const GLubyte*)"GLEW_VERSION_STRING",
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(const GLubyte*)"GLEW_VERSION_MAJOR_STRING",
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(const GLubyte*)"GLEW_VERSION_MINOR_STRING",
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(const GLubyte*)"GLEW_VERSION_MICRO_STRING"
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};
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const size_t max_string = sizeof(_glewString)/sizeof(*_glewString) - 1;
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return _glewString[(size_t)name > max_string ? 0 : (size_t)name];
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}
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/* ------------------------------------------------------------------------ */
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GLboolean glewExperimental = GL_FALSE;
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GLenum GLEWAPIENTRY glewInit (void)
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{
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GLenum r;
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#if defined(GLEW_EGL)
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PFNEGLGETCURRENTDISPLAYPROC getCurrentDisplay = NULL;
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#endif
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r = glewContextInit();
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if ( r != 0 ) return r;
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#if defined(GLEW_EGL)
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getCurrentDisplay = (PFNEGLGETCURRENTDISPLAYPROC) glewGetProcAddress("eglGetCurrentDisplay");
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return eglewInit(getCurrentDisplay());
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#elif defined(GLEW_OSMESA) || defined(__ANDROID__) || defined(__native_client__) || defined(__HAIKU__)
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return r;
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#elif defined(_WIN32)
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return wglewInit();
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#elif !defined(__APPLE__) || defined(GLEW_APPLE_GLX) /* _UNIX */
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return glxewInit();
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#else
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return r;
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#endif /* _WIN32 */
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}
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#if defined(_WIN32) && defined(GLEW_BUILD) && defined(__GNUC__)
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/* GCC requires a DLL entry point even without any standard library included. */
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/* Types extracted from windows.h to avoid polluting the rest of the file. */
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int __stdcall DllMainCRTStartup(void* instance, unsigned reason, void* reserved)
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{
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(void) instance;
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(void) reason;
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(void) reserved;
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return 1;
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}
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#endif
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