https://bugs.freedesktop.org/show_bug.cgi?id=25142
--- Comment #29 from Eric Appleman erappleman@gmail.com 2010-06-18 01:26:18 PDT --- I'm seeing this bug on my machine too and have been for over a year.
Intel i945gm Mesa 7.8.1 Xserver 1.8.2 Linux 2.6.35 rc3
Touhou 11 and 12 are pretty much unplayable. 10 fps in fbo mode. 30 fps in-game (60 fps menu) in backbuffer and pbuffer modes.
Touhou 10 has it's problem spots during complex scenes, but works fine. All of the older games are fine 90% of the time.
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