Roland Scheidegger wrote: > Hiroshi Morii wrote: > > Just wanted to mention that the "old" 3Dfx compression tool is available at > > glide.sourceforge.net. It's called TEXUS2 and is included in the Glide > > "swlib" CVS module. It's a generic library that includes DXTn compression. > ah crap that seems to be exactly what I was looking for but didn't > find. Well at least it was fun to write the compression algorithm - I > guess I'll post a patch (it's now finished (and works) anyway) and then > just let it die...
It would be a shame to let it die. Would you consider contributing to TEXUS2? The current version's DXT5 compressor is somewhat wacked. > > > The Mesa 3Dfx accel driver uses it as an external library and works quite > > well. The compression algorithm was keeped outside Mesa because of > > S3/Microsoft's patent restriction and I think it would be safe to do the > > same for DRI. see http://dri.sourceforge.net/cgi-bin/moin.cgi/S3TC > An external library seems to be the obvious choice, as it means it > wouldn't be necessary to recompile Mesa/DRI just to get texture > compression. Someone would need to integrate that cleanly into Mesa/DRI > though. > > Roland > btw it looks like at least the i830 and sis drivers could also easily > get DXTn support (what about mga? IIRC the chips also support DXTn, but > the mgaregs.h file seems to miss these), but lacking the hardware I > won't touch them... > Integrating texture compression shouldn't be much of a problem. But we do need to be extra careful not to encumber Mesa/DRI with legal issues. Speaking of which, does anyone know the details of S3/Microsoft's DXTn licence? So far, I've been unsuccessful in obtaining information. Hiroshi Morii http://glide.sourceforge.net/ ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click -- _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
