[Bug 21515] VENDOR_WINE vs VENDOR_ATI with xf86-video-ati

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=21515





--- Comment #125 from Stefan Dösinger <stefandoesinger at gmx.at>  2010-03-09 12:37:04 ---
You need this libdxtn library to enable s3tc support in Mesa, or force it on in
driconf.

In general the radeon driver has no issue with the s3tc patent because it just
passes the compressed data through from the app to the card and doesn't care
about compressing or decompressing it. However, apps can request s3tc
compression and decompression from opengl(upload uncompressed data to a s3tc
texture or vice versa). The mesa people were considering a special "Only
passthrough s3tc" extension for wine, but that won't work because Mesa might
still have to decompress the texture in case it hits a software fallback
somewhere.

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