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#111 Implied Extensions

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nobody
7
2012-09-15
2009-08-07
Nigel Stewart
No

I've noticed that some GL extensions are implied by others, and therefore may be omitted from the extension string.
One example is GL_NV_geometry_program4 which states:
...This extension is supported if "GL_NV_gpu_program4" is found in the extension string...

As a consequence GLEW fails to find GL_NV_geometry_program4 in the extension string, doesn't consider GL_NV_gpu_program4, and fails to load the (available) glProgramVertexLimitNV entry point.

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