From: Angus Dorbie (dorbie++at++sgi.com)
Date: 02/02/2000 06:45:02
I thought you'd said you used a different internal format in your post.
An ALPHA texture will obviously modify the alpha component of the
fragment but the main difference between an INTENSITY texture and a
LUMINANCE texture is their behaviour w.r.t. the fragments alpha value.
If you need this bahaviour on IMPACT you can work around the limitation
by using LUMINANCE_ALPHA texture instead of the single component texture
formats.
CHeers,Angus.
ramey wrote:
>
> Well I solved my own problem, thanks to those who commented though. The
> real problem is that GL_INTENSITY and GL_ALPHA just are not supported on
> an impact. This is not documented anywhere I found in performer but in
> reading over some of Mark J. Kilgards code he had a comment to himself
> about this. So I took by code over to our Origin2000 with and IR and low
> and behold, I had everything right the first time around.
> --
> "Haven't you heard? We come in six packs now." -Zaphod Beeblebrox
> Larry E. Ramey
> ramey++at++de-solutions.com
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