[Mesa-dev] [Bug 57903] New: [llvmpipe] piglit fbo-blending-formats regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=57903

          Priority: medium
            Bug ID: 57903
          Keywords: regression
                CC: jfonseca at vmware.com
          Assignee: mesa-dev at lists.freedesktop.org
           Summary: [llvmpipe] piglit fbo-blending-formats 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: a64c1eb9b110f29b8abf803a8256306702629bdc (master)

Run piglit fbo-blending-formats on llvmpipe.

$ ./bin/fbo-blending-formats -auto
Using test set: Core formats
Testing 3
Testing 4
Testing GL_RGB
Testing GL_RGBA
Testing GL_ALPHA
Testing GL_LUMINANCE
Testing GL_LUMINANCE_ALPHA
Testing GL_INTENSITY
Probe at (96,0)
  Expected: 0.810000 0.000000 0.000000 1.000000
  Observed: 0.796078 0.000000 0.000000 1.000000
  when testing FBO result, blending with DST_ALPHA.
Testing GL_ALPHA4
Testing GL_ALPHA8
Testing GL_ALPHA12
Testing GL_ALPHA16
Testing GL_LUMINANCE4
Testing GL_LUMINANCE8
Testing GL_LUMINANCE12
Testing GL_LUMINANCE16
Testing GL_LUMINANCE4_ALPHA4
Testing GL_LUMINANCE8_ALPHA8
Testing GL_LUMINANCE12_ALPHA12
Testing GL_LUMINANCE16_ALPHA16
Testing GL_INTENSITY4
Probe at (96,0)
  Expected: 0.810000 0.000000 0.000000 1.000000
  Observed: 0.796078 0.000000 0.000000 1.000000
  when testing FBO result, blending with DST_ALPHA.
Testing GL_INTENSITY8
Probe at (96,0)
  Expected: 0.810000 0.000000 0.000000 1.000000
  Observed: 0.796078 0.000000 0.000000 1.000000
  when testing FBO result, blending with DST_ALPHA.
Testing GL_INTENSITY12
Testing GL_INTENSITY16
Testing GL_R3_G3_B2
Testing GL_RGB4
Testing GL_RGB5
Testing GL_RGB8
Testing GL_RGB10
Testing GL_RGB12
Testing GL_RGB16
Testing GL_RGBA2
Testing GL_RGBA4
Testing GL_RGB5_A1
Testing GL_RGBA8
Testing GL_RGB10_A2
Testing GL_RGBA12
Testing GL_RGBA16
PIGLIT: {'result': 'fail' }

7d44d354bdba853e453ce3991396e2b0933468f4 is the first bad commit
commit 7d44d354bdba853e453ce3991396e2b0933468f4
Author: José Fonseca <jfonseca at vmware.com>
Date:   Tue Dec 4 13:38:52 2012 +0000

    gallivm: Generalize lp_build_mul and lp_build_lerp for signed normalized
types.

    This fixes fdo bug 57755 and most of the failures of piglit
fbo-blending-formats
    GL_EXT_texture_snorm.

    GL_INTENSITY_SNORM is still failing, but problem is probably elsewhere,
    as GL_R8_SNORM works fine.

:040000 040000 2516938b50b01e57b07561c913ff734117d16f47
73b5d8f8beac889bfb7bf52a63fae84b2855b903 Msrc
bisect run success

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