[Mesa-dev] [Bug 61153] New: [softpipe] piglit interpolation-noperspective-gl_BackColor-flat-vertex regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61153

          Priority: medium
            Bug ID: 61153
          Keywords: regression
                CC: brianp at vmware.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [softpipe] piglit
                    interpolation-noperspective-gl_BackColor-flat-vertex
                    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: 076403c30d9f5cc79374e30d9f6007b08a63bf2d (master)

$ ./bin/shader_runner
generated_tests/spec/glsl-1.30/execution/interpolation/interpolation-noperspective-gl_BackColor-flat-vertex.shader_test
-auto
Mesa warning: failed to remap glClampColorARB
Mesa warning: failed to remap glTexBufferARB
Mesa warning: failed to remap glFramebufferTextureARB
Mesa warning: failed to remap glVertexAttribDivisorARB
Mesa warning: failed to remap glProgramParameteriARB
Probe at (159,45)
  Expected: 0.272727 0.181818 0.545455 1.000000
  Observed: 0.474510 0.160784 0.364706 1.000000
Probe at (192,38)
  Expected: 0.153846 0.153846 0.692308 1.000000
  Observed: 0.266667 0.133333 0.596078 1.000000
Probe at (216,33)
  Expected: 0.066667 0.133333 0.800000 1.000000
  Observed: 0.117647 0.117647 0.764706 1.000000
Probe at (166,83)
  Expected: 0.166667 0.333333 0.500000 1.000000
  Observed: 0.294118 0.294118 0.415686 1.000000
Probe at (196,71)
  Expected: 0.071429 0.285714 0.642857 1.000000
  Observed: 0.125490 0.250980 0.627451 1.000000
Probe at (136,136)
  Expected: 0.181818 0.545455 0.272727 1.000000
  Observed: 0.317647 0.478431 0.203922 1.000000
Probe at (173,115)
  Expected: 0.076923 0.461538 0.461538 1.000000
  Observed: 0.129412 0.403922 0.462745 1.000000
Probe at (145,166)
  Expected: 0.083333 0.666667 0.250000 1.000000
  Observed: 0.149020 0.603922 0.247059 1.000000
PIGLIT: {'result': 'fail' }

4a938ef7136a89c828ebb16effe1bc5bea08b7d7 is the first bad commit
commit 4a938ef7136a89c828ebb16effe1bc5bea08b7d7
Author: Brian Paul <brianp at vmware.com>
Date:   Mon Jan 21 11:32:49 2013 -0700

    draw: add new debug code and comments in clip code template

    In debug builds, set clipped vertex window coordinates to NaN values
    to help debugging.  Otherwise, we're just leaving the coordinate in clip
    space and it's invalid to use it later expecting it to be a window coord.

    Reviewed-by: José Fonseca <jfonseca at vmware.com>

:040000 040000 1c9a933b785f0a56ebf2f13874aacffc4183e976
b87acb6dca3e64abd30f9da1d7483ac61364fb9e M      src
bisect run success

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