glutExtensionSupported (3) - Linux Manuals
glutExtensionSupported: Determine if an OpenGL extension is available.
NAME
glutExtensionSupported - Determine if an OpenGL extension is available.LIBRARY
OpenGLUT - openglSYNOPSIS
In openglut.h Ft int Fn glutExtensionSupported const char *extensionPARAMETERS
Bf Em
Consider an ogWarning() if there is no current rendering context.
This is an ugly bit of code with 3 return statements, one of which is never reached.
DESCRIPTION
Returns 0 if OpenGLUT cannot determine that the requested
extension is definitely present. Only checks extensions
from glGetString().
TODO
Wouldn't this be simpler and clearer if we used strtok()?