[Bug 92510] New: Radeon screen corruption and flickering under wine (bisected)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92510

            Bug ID: 92510
           Summary: Radeon screen corruption and flickering under wine
                    (bisected)
           Product: xorg
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: gringo at slonko.net
        QA Contact: xorg-team at lists.x.org

Created attachment 118939
  --> https://bugs.freedesktop.org/attachment.cgi?id=118939&action=edit
Screenshot

While playing Heroes of Might and Magic 5 (Tribes of the East) under wine I
noticed that at certain point in time I started getting screen corruptions (see
attached screenshot) and flickering. I did bisect and it turned out to be the
following commit which caused it:

commit f8b0f23e9f4af9f9097ee5e72d53b45173163c41
Author: Michel Dänzer <michel.daenzer at amd.com>
Date:   Fri Mar 27 12:34:55 2015 +0900

    DRI2: Use radeon_get_pixmap_handle

    Now we can share pixmaps with no struct radeon_bo via DRI2.

    Fixes VDPAU video playback freezing when using an OpenGL compositor with
    DRI3 enabled.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89755

    Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
    Tested-by: Nick Sarnie <commendsarnex at gmail.com>

Interestingly reverting this commit fixed DRI2, but not DRI3 (display is still
corrupted and flickery).
I am using Gentoo with xf86-video-ati git, xorg-server-1.17.2-r2, kernel 4.2.3,
and XFCE + Compiz (switching off compiz makes no difference).

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