[geeks] GL under XFree

[Joshua D Boyd]

On XFree, are the same GL extensions supported, no matter what card is used?

I just found that on my machine with XFree 4.1 and a TNT2, the convolution
extension is supported (usefull for edge finding, etc) but unfortunately the
color matrix extension (no big surprise since it is an SGI proprietary 
extension).

Oh, and I've found that unless you are hoping to geometrically warp pictures
that using textured quads is less easy (and usually slower also) than the
other GL 2D drawing techniques that work even without texture hardware. 
Zooming is one major exception, but then, that is kinda a geometric warp.

Of course, hardware convolutions would be nice, but anything higher than
an Extreme seems to support them in the SGI world.  Not sure about NT, OS X,
etc.

-- 
Joshua D. Boyd