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Yangshu
06-07-2002, 09:22 AM
Hi you all,

I need to do texture subtractions as fast as posible. Any suggestions?

Yangshu

AdrianD
06-07-2002, 09:27 AM
try this extensions:

ARB_texture_env_combine
EXT_texture_env_combine
NV_register_combiners

Wiseman4
06-07-2002, 08:28 PM
also glBlendEquation(GL_FUNC_SUBTRACT), on a card that supports none of the above.
It's part of the imaging subset, so performance may(will) vary wildly from card to card.