[Bug 32821] Some games runs extremally slow with Mesa >= 8.0

http://bugs.winehq.org/show_bug.cgi?id=32821

--- Comment #5 from Henri Verbeet  2013-01-26 16:53:35 CST ---
(In reply to comment #3)
> I tried to do sysprof log few times, but I really don't know what's wrong.

That profile helps. It looks like the calls to unpack_ARGB8888() are caused by
glGetTexImage(), which ends up hitting a fallback in _mesa_meta_GetTexImage() /
_mesa_get_teximage().

As a guess, does setting MESA_EXTENSION_OVERRIDE="-GL_EXT_texture_sRGB_decode"
make it any better? If not, could you create a log with
WINEDEBUG="+tid,+d3d9,+d3d,+d3d_surface,+d3d_texture"?