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https://bugs.freedesktop.org/show_bug.cgi?id=8056
------- Additional Comments From [EMAIL PROTECTED] 2006-09-12 20:56 -------
(In reply to comment #11)
> (In reply to comment #10)
> > (In reply to comment #9)
> > > It is common knowledge that r300 is slow, but UT 2004 is playable
> > > provided you
> > > set UseVBO=True. This should give a 3x speedup.
> >
> > I've changed that, it seems to make a big difference if s3tc is enabled, but
> > still not playable. I have a somewhat serious interest in working on r300
> > though, and I've been trying to reproduce the texture corruption issue with
> > my
> > own simple opengl commands. So far, I have a spinning cube with a texture
> > on
> > the sides, and I have r300 warning my about the multitexturing problems,
> > but the
> > texture still looks fine. I'm going to find out about how to use
> > multitexturing
> > and add to my code till I hopefully reproduce the problem. Anyone have any
> > advice for me?
>
> http://www.rasterburn.org/~aet/multiarb1.c
>
>
Ok, I reproduced the issue like so:
RCS file: /cvs/mesa/Mesa/progs/demos/multiarb.c,v
retrieving revision 1.15
diff -u -r1.15 multiarb.c
--- multiarb.c 9 Jan 2005 17:39:06 -0000 1.15
+++ multiarb.c 13 Sep 2006 03:50:57 -0000
@@ -256,13 +256,13 @@
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
if (i == 0) {
- if (!LoadRGBMipmaps(TEXTURE_1_FILE, GL_RGB)) {
+ if (!LoadRGBMipmaps(TEXTURE_1_FILE,
GL_COMPRESSED_RGBA_S3TC_DXT3_EXT)) {
printf("Error: couldn't load texture image\n");
exit(1);
}
}
else if (i == 1) {
- if (!LoadRGBMipmaps(TEXTURE_2_FILE, GL_RGB)) {
+ if (!LoadRGBMipmaps(TEXTURE_2_FILE,
GL_COMPRESSED_RGBA_S3TC_DXT3_EXT)) {
printf("Error: couldn't load texture image\n");
exit(1);
}
When you right click on the demo window and enable some of the checkered
textures, they should be messed up if you have changed the format as above. I
had gotten multitexturing working yesterday, but I think the problems only
happen when mixing the compressed textures with uncompressed ones?
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