developers,
 
I am having experiancing a sementation fault when calling glCompressedTexImage2DARB. I have checked the pointer returned from GetProcAddress and it seems to be valid (not NULL). i placed a breakpoint in teximage.c (a mesa source file) on the function _mesa_CompressedTexImage2DARB. I am not getting to this mesa function before the segmentation fault. The debugger is giving me fits and i can not look at a backtrace to determine where the crash occurred. even loading a core dump yields no useful information.
 
My question is what should i check? how do i determine if the pointer returned is actually the right one? is _mesa_CompressedTexImage2DARB is obviously not called directly by glCompressedTexImage2DARB, so how does it get called? this last question is related to flow, has does an opengl call in an application make it to the appropriate place in the driver?
 
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