[Bug 37781] New: Major redraw/flicker issues on rv350 after exiting fullscreen app with compiz running

[bugzilla-daemon at freedesktop.org]

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 at lists.freedesktop.org
        ReportedBy: oreaus at 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 at 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 at whitecape.org>
    Reviewed-by: Eric Anholt <eric at 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.

-- 
Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.