#define GL_GLEXT_PROTOTYPES # if defined(TOGL_AGL) || defined(TOGL_AGL_CLASSIC) || defined(TOGL_NSOPENGL) # include <OpenGL/gl.h> # include <OpenGL/glu.h> # else # include <GL/gl.h> # include <GL/glu.h> # endif #ifdef TOGL_X11 // parallel #define GLX_GLXEXT_PROTOTYPES #include <GL/glx.h> #include <GL/glxext.h> #endif // part of OpenGL 1.2, but not in Microsoft's OpenGL 1.1 header: // GL version sould be checked at runtime #ifndef GL_CLAMP_TO_EDGE #define GL_CLAMP_TO_EDGE 0x812F #endif