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preble/glerrcheck.h

Created October 24, 2012 14:04
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glGetError() test macro
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glerrcheck.h
// A macro I wrote a few years back to assist in checking OpenGL error codes.
// Add to a .h or at the top of your implementation file:
#define GLERR do {\
GLuint glerr;\
while((glerr = glGetError()) != GL_NO_ERROR)\
fprintf(stderr, "%s:%d glGetError() = 0x%04x", __FILE__, __LINE__, glerr);\
} while (0)
// Sprinkle in "GLERR;" after failure-prone OpenGL calls.
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