[Mesa-dev] [Bug 101709] [llvmpipe] piglit gl-1.0-scissor-offscreen regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101709

            Bug ID: 101709
           Summary: [llvmpipe] piglit gl-1.0-scissor-offscreen regression
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Keywords: bisected, regression
          Severity: normal
          Priority: medium
         Component: Mesa core
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: vlee at freedesktop.org
        QA Contact: mesa-dev at lists.freedesktop.org
                CC: maraeo at gmail.com, nhaehnle at gmail.com

mesa: c5d0dc7fa5566941a49ede8c83a0cfe0a33a3d7f (master 17.2.0-devel)

$ ./bin/gl-1.0-scissor-offscreen -fbo -auto
Probe color at (0,0)
  Expected: 1.000000 1.000000 1.000000
  Observed: 1.000000 0.000000 0.000000
PIGLIT: {"result": "fail" }


743ad599a97d09b119d26b99f6b79e41b567e421 is the first bad commit
commit 743ad599a97d09b119d26b99f6b79e41b567e421
Author: Marek Olšák <marek.olsak at amd.com>
Date:   Wed Jun 14 23:09:24 2017 +0200

    st/mesa: don't set 16 scissors and 16 viewports if they're unused

    Only do so if there is a shader writing gl_ViewportIndex.
    This removes a lot of CPU overhead for the most common case.

    Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>

:040000 040000 34a059a5354c760fe20f6cbf2b6a823bd075f21d
6a4fbdf3efb3fee9902a32873c41449c7b118c0c M      src
bisect run success

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