Comment # 3 on bug 58925 from Pali Rohár

This problem is maybe related:
http://lists.freedesktop.org/archives/mesa-dev/2013-August/043505.html

Kwin from KDE4.8 not rendering properly after commit
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