[Mesa-dev] [Bug 89689] [Regression] Weston on DRM backend won't start with new version of mesa

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89689

            Bug ID: 89689
           Summary: [Regression] Weston on DRM backend won't start with
                    new version of mesa
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: EGL
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: stu_dby at 126.com
        QA Contact: mesa-dev at lists.freedesktop.org

With mesa 10.5.1 and on, weston won't start with DRM backend, saying that it
can't find EGL config. I looked into it a little, weston attempts to find
XRGB8888 but it only gets ARGB8888 and RGB565.

Reverting commit 65c8965d033cf9ade5e6f3c88bda6d247d46af9d: egl: Take alpha bits
into account when selecting GBM formats, which has been backported to 10.5 and
10.4 branches eliminates the problem.

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