[Mesa-dev] [Bug 77161] New: [softpipe] piglit fbo-generatemipmap-cubemap S3TC_DXT1 regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77161

          Priority: medium
            Bug ID: 77161
          Keywords: regression
                CC: maraeo at gmail.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [softpipe] piglit fbo-generatemipmap-cubemap S3TC_DXT1
                    regression
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: vlee at freedesktop.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Other
           Product: Mesa

mesa: 34f15903d6f5807b34a4c9be6d8daaedbbdd64bc (master 10.2.0-devel)

$ ./bin/fbo-generatemipmap-cubemap S3TC_DXT1 -auto
Probe color at (0,0)
  Expected: 0.250000 0.500000 0.500000 1.000000
  Observed: 0.000000 0.490196 0.482353 1.000000
  when testing face 2, level 5, cube 0
PIGLIT: {'result': 'fail' }


8ab7bb4707ae5fb6e5e841f0f2e369c14b5ffbea is the first bad commit
commit 8ab7bb4707ae5fb6e5e841f0f2e369c14b5ffbea
Author: Marek Olšák <marek.olsak at amd.com>
Date:   Sun Mar 16 03:40:54 2014 +0100

    gallium/u_blitter: don't adjust cubemap coordinates by a small number

    It may cause issues with mipmap generation.
    I think it was used to make some piglit tests pass on r300g.

:040000 040000 de431ecef78cd73917bdae4846194821bcfe9862
234da266ee4cbe859f5e9a9671fdb82026953304 M    src
bisect run success

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