[Bug 56405] Distorted graphics on Radeon HD 6620G

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=56405

--- Comment #34 from Michael Dressel <mdrslmr@t-online.de> ---
I finished bisecting (again).

The result looks like this:

git bisect bad
c0c979eebc076b95cc8d18a013ce2968fe6311ad is the first bad commit
commit c0c979eebc076b95cc8d18a013ce2968fe6311ad
Author: Jerome Glisse <jglisse@redhat.com>
Date:   Mon Jan 30 17:22:13 2012 -0500

    r600g: add support for common surface allocator for tiling v13

    Tiled surface have all kind of alignment constraint that needs to
    be met. Instead of having all this code duplicated btw ddx and
    mesa use common code in libdrm_radeon this also ensure that both
    ddx and mesa compute those alignment in the same way.

    v2 fix evergreen
    v3 fix compressed texture and workaround cube texture issue by
       disabling 2D array mode for cubemap (need to check if r7xx and
       newer are also affected by the issue)
    v4 fix texture array
    v5 fix evergreen and newer, split surface values computation from
       mipmap tree generation so that we can get them directly from the
       ddx
    v6 final fix to evergreen tile split value
    v7 fix mipmap offset to avoid to use random value, use color view
       depth view to address different layer as hardware is doing some
       magic rotation depending on the layer
    v8 fix COLOR_VIEW on r6xx for linear array mode, use COLOR_VIEW on
       evergreen, align bytes per pixel to a multiple of a dword
    v9 fix handling of stencil on evergreen, half fix for compressed
       texture
    v10 fix evergreen compressed texture proper support for stencil
        tile split. Fix stencil issue when array mode was clear by
        the kernel, always program stencil bo. On evergreen depth
        buffer bo need to be big enough to hold depth buffer + stencil
        buffer as even with stencil disabled things get written there.
    v11 rebase on top of mesa, fix pitch issue with 1d surface on evergreen,
        old ddx overestimate those. Fix linear case when pitch*height < 64.
        Fix r300g.
    v12 Fix linear case when pitch*height < 64 for old path, adapt to
        libdrm API change
    v13 add libdrm check

    Signed-off-by: Jerome Glisse <jglisse@redhat.com>

:100644 100644 af1e914f35aebf24c4824e93804c9f9088be7333
b2b1ab8f41a131089b84325fef962f7d4d79bb8d M    configure.ac
:040000 040000 facdf8849a029e15e166ffcf17c2db2d57ee9530
fa9bf703af2882d35c8d7e83022c8b80d43ae390 M    src

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