[Bug 64475] Slow work and no brightness adjustment in Euro Track Simulator II game with HD6850

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64475

--- Comment #4 from florian.will at googlemail.com ---
Just adding some more data, I hope it's not entirely useless for you:

I experience this/a similar issue with HD 6870 and Kernel 3.11, with radeon.dpm
and the "performance" CPU governor enabled. I get only ~10-15 FPS while
catalyst renders the same scene at 40+ FPS (and probably even more in windows).

Light reflection seems to be wrong which makes the scene look pretty dark
compared to how catalyst renders it. The HUD mirrors are fine, while "in-game"
mirrors are rendered incorrectly, as you can see from commiethebeastie's
screenshot. If you're interested, I can add my screenshot. It's not as dark as
the one posted already, but still looks incorrect.

I really don't know a lot about graphics etc., but I could imagine that there
is some trouble with compiling shaders..

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