The 1st, 2nd, and 3rd place you should look for OpenGL information is www.opengl.org. I believe there was an article written not too long ago that discusses nVidia's OpenGL extensions.

Here are a few other links:

The opengl extension registry: http://reality.sgi.com/ljp_engr/registry/

it's doc for gl_EXT_stencil_wrap: http://reality.sgi.com/ljp_engr/registry/EXT/stencil_wrap.txt

and it's doc on gl_NV_texgen_reflection: http://reality.sgi.com/ljp_engr/registry/NV/texgen_reflection.txt

other related links:

Michael Gold has descriptions of some of them: http://www.berkelium.com/OpenGL/NVIDIA/extensions.html

NVIDIA has some related presentations in their developer section: http://www.nvidia.com/Marketing/Developer/DevRel.nsf/TechnicalPresentationsFrame?OpenPage

article by Mark Kilgard (of NVIDIA) on extensions: http://www.opengl.org/News/Special/OGLextensions/OGLextensions.html

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Scott Franke [druid-]
sfranke@usc.edu
druid-'s GL Journal
http://www.gamedev.net/opengl

Would anyone happen to know where I can get the specs for the NVIDIA extensions GL_EXT_stencil_wrap, and GL_NV_texgen_reflection? I'd love to be able to throw some pretty shadows and reflections into my engine.

Any help on this would be appreciated.

Cheers.

Ben

Here's one more good one from NVIDIA's developer section: (they have a lot of good stuff there!)
http://www.nvidia.com/Marketing/Developer/DevRel.nsf/ProgrammingResourcesFrame?OpenPage

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Scott Franke [druid-]
sfranke@usc.edu
druid-'s GL Journal
http://www.gamedev.net/opengl