[Mesa-dev] [Bug 97393] Wrong result of S3TC DXT3 texture rendering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97393

            Bug ID: 97393
           Summary: Wrong result of S3TC DXT3 texture rendering
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/swr
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: b7.10110111 at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 125875
  --> https://bugs.freedesktop.org/attachment.cgi?id=125875&action=edit
Test case

The attached test case works correctly when used with e.g. i965 driver, but
gives wrong result with LIBGL_ALWAYS_SOFTWARE=1, regardless of what swrast
driver is in use: llvmpipe, softpipe and non-gallium SW renderers all behave
the same wrong way.

I've tried installing libtxc_dxtn, but it didn't change anything.

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