[Mesa-dev] [Bug 71199] New: [llvmpipe] piglit glean polygonOffset regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71199

          Priority: medium
            Bug ID: 71199
          Keywords: regression
                CC: jfonseca at vmware.com, mcclurem at vmware.com,
                    sroland at vmware.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [llvmpipe] piglit glean polygonOffset 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: fa8b1514d31d1ffb3d9e2a208ac7d1bd774754b2 (master)

$ ./bin/glean -t polygonOffset --quick
polygonOffset:  FAIL rgba8, db, z24, s8, accrgba16, win+pmap, id 33
    Actual MRD is too small (may cause incorrect results)

    Ideal  MRD at near plane is 1.19209e-07 (nominally 2 bits)
    Actual MRD at near plane is 5.96046e-08 (nominally 1 bit)
    Ideal  MRD at infinity is 3.06118e-08 (nominally 1 bit)
    Actual MRD at infinity is 5.96046e-08 (nominally 1 bit)


be0b67a1436eb2b899f9874725b2a68eb26f9f3f is the first bad commit
commit be0b67a1436eb2b899f9874725b2a68eb26f9f3f
Author: Matthew McClure <mcclurem at vmware.com>
Date:   Tue Oct 22 15:48:00 2013 -0700

    util,llvmpipe: correctly set the minimum representable depth value

    Reviewed-by: Roland Scheidegger <sroland at vmware.com>
    Reviewed-by: Jose Fonseca <jfonseca at vmware.com>

:040000 040000 705fdddb5369a190f9fa393549692d5d05dd5d5b
0e7c6c6eb72429cbdceb2b3b85673b48c25ed5eb M    src
bisect run success

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