Cool! I'll have to take a look. I was just reading an article about a multipass technique the other day (looked like it'd use up frame rate).
BTW at this link:
http://www.opengl.org/developers/faqs/technical/texture.htm
Look at 21.040, it talks about an OpenGL 1.2 feature that may not break Voodoos. Are we able to use 1.2 or is one of the earlier levels the lowest common denominator for supported systems?
This is exactly what I've used (I was actually surprised by the low overhead of the multipass rendering).
I've read somewhere that voodoo drivers would turn to software rendering when this option is enabled. Just to be sure I added the option to disable this.
I guess this is something for the FAQ/Documentation, just like the fact that the sgi O2/Octane and earlier models don't support fog-nicest (exponential fog) in hardware.
Erik
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