"No nation was ever ruined by trade."
- Benjamin Franklin
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Query FailedMesserFuerFrauSchmid
Monday, June 21, 2004

I would not say it is a useless feature, I can actually see more use in this than in 3dc. As batching draw calls is besides CPU calculations the main bottleneck in today games. And this feature can become very handy especially in stuff like I've got 10000 army units 1000000 trees/grass in a terrain or whatever. Packing many objects into the same vertex buffer does not always work. Besides vertex buffer size is very limited or better say the index buffer. And index buffer splitting is more complicated than you think
nEUrOO
Saturday, June 19, 2004

I really wanna see new demos
Humus
Saturday, June 19, 2004

Yes, I'm sure it works. I can load and use the files. The bit order is min/max then indices. First for y, then for x.

All the dirty details can be found in DXT5 alpha decoding here:
http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
Anonymous
Friday, June 18, 2004

"about that ON the web", that is of course
Nico
Friday, June 18, 2004

Humus, are you sure your converter works? It seems to me that you store the 4x4 pixel blocks in that order in the file: 3bit-indices for the x channel, min and max x, 3bit-indices for y channel, min and max y (at least it looks like that in my hex editor). I thought the right way was: min and max x, 3bit-indices x, min and max y, 3bit-indices y. However, I'm not sure if this *is* the right way or if you store the texture as I think you do. It's just that I'm currently too stupid to decode the textures your program produces, so I thought I complain here

Seriously, could you enlighten me what the correct layout for the 4x4 pixel blocks is? I couldn't find anything about that for the web (only the hint that it's basically like DXTC5).

TIA.
Anonymous
Wednesday, June 16, 2004

light shaft and parallax would be nice! thanks
fivefives
Tuesday, June 15, 2004

have you seen this, yet? thought it was VERY interesting.

http://www.digit-life.com/articles2/radeon/rx800-3.html#p10

don't tell the ATI bigwigs, though
Humus
Sunday, June 13, 2004

Well, the non-marketing name for 3Dc is ATI2N, and ATI2 is obviously then the first four chars.
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