[Mesa-dev] nouveau: nv43: Kwin from KDE 4.8 not working

[Pali Rohár]

Hello,

with last mesa from master, kwin not rendering correctly. It 
render some random colors and after some time rendering is 
freezed. Keyboard, mouse working fine I'm able to write something 
in opened xterm. When I disable compositing (with keyboard 
shortcut) then rendering working fine and I can see what I wrote 
to xterm.

I run git bisect and found that commit which caused this 
regression is:

35840ab189595b817fa8b1a1df8cc92474a7c38d
st/dri: implement MSAA for GLX/DRI2 framebuffers
Author: Marek Olšák  2012-12-03 05:36:08
Committer: Marek Olšák  2012-12-07 14:19:29
Reviewed-by: Brian Paul

Above problem with kwin is only on nouveau nv43 (geforce 6600 
gt). On another machine with radeon r600 driver it is not 
reproducable (also from mesa master) with same KDE/KWin version.

I found some reported bugs, but I'm not sure if this is same:
https://bugs.freedesktop.org/show_bug.cgi?id=58925
https://bugs.kde.org/show_bug.cgi?id=300475

At least upgrading KDE to new version 4.11 and manually choose 
use opengl 1.3 in kwin systemsettings solving this problem. With 
opengl 2.1 problem is still there.

Do you have any idea where can be problem? Fact is that mesa from 
commit before 35840ab189595b817fa8b1a1df8cc92474a7c38d working 
fine without problems on nv43.

-- 
Pali Rohár
pali.rohar at gmail.com
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