View Full Version : GL_MODULATE and GL_BLEND

05-28-2001, 10:47 PM
Hi !

Could somebody explain me the difference between GL_MODULATE and GL_BLEND ?

Thank you !


Serge K
06-04-2001, 06:20 AM
Texture Environments and Texture Functions (http://trant.sgi.com/opengl/docs/Specs/glspec1.1/node88.html)

p.s. Any 3D chip supports GL_MODULATE, but only few can do GL_BLEND in hardware.

06-05-2001, 10:44 AM
Actually, quite the reverse. Blending is far more common, and only really low-end cards (among them are some of the earlier ATI Rage cards) don't support multitexturing. Most of the cards that do multitexturing can only do 2 at a time though... not that you could make use of more, really http://www.opengl.org/discussion_boards/ubb/smile.gif nVidia's GeForce3 and most (maybe :P) industrial cards have 4 or more TMUs.

06-06-2001, 12:43 AM
just search in here, we had a discussion about this topic last week...