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pygame / src / pgopengl.h

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#if !defined(PGOPENGL_H)
#define PGOPENGL_H

/** This header includes definitions of Opengl functions as pointer types for
 ** use with the SDL function SDL_GL_GetProcAddress.
 **/

#if defined(_WIN32)
#define GL_APIENTRY __stdcall
#else
#define GL_APIENTRY
#endif

typedef void (GL_APIENTRY *GL_glReadPixels_Func)(int, int, int, int, unsigned int, unsigned int, void*);

#endif