[Mesa-dev] [Bug 95071] [bisected] Wrong colors in KDE/Qt applications

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95071

            Bug ID: 95071
           Summary: [bisected] Wrong colors in KDE/Qt applications
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: daniel at constexpr.org
        QA Contact: mesa-dev at lists.freedesktop.org

Since Mesa commit ccdcf91104a5f07127b5b8d8570b5c4bbcf86647 most KDE or Qt
applications display with their red and blue color channels swapped. The only
unaffected Qt windows seem to be those with an alpha channel (Konsole, Plasma).
GTK applications do not seem to be affected.

All affected windows use visual 0x3f5:
0x3f5 24 tc  0  24  0 r  y .   8  8  8  0 .  .  0  0  0  0  0  0  0  0 0 None

This happens with and without compositing. It also does not matter which Mesa
version is used by the application itself - as long as the X server was started
with a broken Mesa version installed, the color channels are swapped.

GPU: Radeon R9 380X (tonga)
Mesa 11.3.0-devel (git-1883613)
LLVM r266988
X Server: git-16e4bce (1.17.4 is also affected)
DDX: xf86-video-amdgpu git-b930067

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