http://bugs.winehq.org/show_bug.cgi?id=31161
--- Comment #8 from Henri Verbeet hverbeet@gmail.com 2012-07-07 10:24:59 CDT --- Yeah, that's missing s3tc support. The glTexSubImage2D() call confused me for a bit because it shouldn't be called for compressed formats, but if the format is missing WINED3DFMT_FLAG_COMPRESSED wouldn't be set either.