[Gtkradiant] [Bug 595] Advanced texture compression patch

gtkradiant@zerowing.idsoftware.com gtkradiant@zerowing.idsoftware.com
Sat, 27 Jul 2002 15:29:55 -0500


------- Additional Comments From ydnar@shaderlab.com  2002-07-27 15:29 -------
The differences in memory consumption of DXT2/3 vs DXT1 are due, IIRC, to the 
driver not compressing textures <= 128x128 pixels. This was noted by a couple 
people (I can't recall where) with Quake 3, which was using hardcoded DXT1, 
which resulted in unpleasant side-effects with lightmaps, where the texel 
density is appreciably low in-game, exaggerating the compression artifacts.

Someone made a hack that patched Quake3.exe to use DXT2 and the quality was 
much closer to uncompressed textures.

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