From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 37781] New: Major redraw/flicker issues on rv350 after exiting
	fullscreen app with compiz running
Date: Tue, 31 May 2011 02:01:55 -0700 (PDT)
Message-ID: <bug-37781-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=37781

           Summary: Major redraw/flicker issues on rv350 after exiting
                    fullscreen app with compiz running
           Product: Mesa
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: oreaus@gmail.com


With default packages in ubuntu natty 11.04, there is a problem where running
and exiting a fullscreen application with compiz running causes major
redraw/refresh flickering issues. They go away after restarting compiz, but
start again reliably after exiting any fullscreen GL app. Here are the bisect
results:

2a95568f64a6641a49a2d4855272e9be2ac2db6d is the first bad commit
commit 2a95568f64a6641a49a2d4855272e9be2ac2db6d
Author: Kenneth Graunke <kenneth@whitecape.org>
Date:   Wed May 11 07:54:57 2011 -0700

    i965: Avoid register coalescing away MATH workarounds on Ivybridge.

    The MATH instruction cannot handle source modifiers, even on Gen7.
    So, apply this workaround for Sandybridge on Ivybridge as well.

    Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
    Reviewed-by: Eric Anholt <eric@anholt.net>

:040000 040000 9cb73cbd09661d6ca745d42fa4aac07963d439b2
2b1804644fe873d2b054645c8e8d5a435d3cbe75 M    src


As a side note, the problem is actually worse in mesa current master, where it
does not require triggering, but instead is flickering right after X/compiz
start the first time. I plan to bisect between the problem commit here and
master next to find out what causes it to get worse.

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