Steve Baker (sbaker++at++link.com)
Tue, 25 Nov 1997 12:53:38 -0600 (CST)
glColorTableSGI ( GL_TEXTURE_COLOR_TABLE_SGI, ... ) ;
I'd like to consider using a set of texture lookup tables to
map the output of virtually every texture map with a different
lookup table.
Is there an efficient way to switch the texture colour table
this frequently?
For example, I heard (somewhere) that it might be efficient to load
the lookup table from the frame buffer rather than from the CPU.
(Unfortunately, I wasn't paying attention at the time.)
I guess that putting the colour table into a display list might
be another thing that would help some.
Might there be some way to load one huge texture colour table
and quickly switch which section of the table is used by each
texture?
Can I somehow bind a colour table to a texture or a texenv?
* Any other ideas?
* What kind of a hit do I take in doing this?
* I can't see a way to do this in Performer - am I missing something
there?
* How big are the physical lookup tables on Inf.Reality?
Thanks in advance...
Steve Baker 817-619-8776 (Vox/Vox-Mail)
Hughes Training Inc. 817-619-4028 (Fax)
2200 Arlington Downs Road SBaker++at++link.com (eMail)
Arlington, Texas. TX 76005-6171 SJBaker1++at++airmail.net (Personal eMail)
http://www.hti.com http://web2.airmail.net/sjbaker1 (personal)
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