[LLVMbugs] [Bug 15239] New: Mesa llvmpipe piglit fbo-blending-formats GL_EXT_texture_snorm regression

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Feb 11 21:39:44 PST 2013 

http://llvm.org/bugs/show_bug.cgi?id=15239

            Bug ID: 15239
           Summary: Mesa llvmpipe piglit fbo-blending-formats
                    GL_EXT_texture_snorm regression
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: vlee at freedesktop.org
                CC: llvmbugs at cs.uiuc.edu, nrotem at apple.com,
                    sroland at vmware.com
    Classification: Unclassified

$ ./bin/fbo-blending-formats GL_EXT_texture_snorm -auto
Using test set: GL_EXT_texture_snorm
Testing GL_RED_SNORM
PIGLIT:subtest {'GL_RED_SNORM' : 'pass'}
Testing GL_R8_SNORM
PIGLIT:subtest {'GL_R8_SNORM' : 'pass'}
Testing GL_RG_SNORM
PIGLIT:subtest {'GL_RG_SNORM' : 'pass'}
Testing GL_RG8_SNORM
PIGLIT:subtest {'GL_RG8_SNORM' : 'pass'}
Testing GL_RGB_SNORM
PIGLIT:subtest {'GL_RGB_SNORM' : 'pass'}
Testing GL_RGB8_SNORM
PIGLIT:subtest {'GL_RGB8_SNORM' : 'pass'}
Testing GL_RGBA_SNORM
PIGLIT:subtest {'GL_RGBA_SNORM' : 'pass'}
Testing GL_RGBA8_SNORM
PIGLIT:subtest {'GL_RGBA8_SNORM' : 'pass'}
Testing GL_ALPHA_SNORM
PIGLIT:subtest {'GL_ALPHA_SNORM' : 'pass'}
Testing GL_ALPHA8_SNORM
PIGLIT:subtest {'GL_ALPHA8_SNORM' : 'pass'}
Testing GL_LUMINANCE_SNORM
PIGLIT:subtest {'GL_LUMINANCE_SNORM' : 'pass'}
Testing GL_LUMINANCE8_SNORM
PIGLIT:subtest {'GL_LUMINANCE8_SNORM' : 'pass'}
Testing GL_LUMINANCE_ALPHA_SNORM
PIGLIT:subtest {'GL_LUMINANCE_ALPHA_SNORM' : 'pass'}
Testing GL_LUMINANCE8_ALPHA8_SNORM
PIGLIT:subtest {'GL_LUMINANCE8_ALPHA8_SNORM' : 'pass'}
Testing GL_INTENSITY_SNORM
PIGLIT:subtest {'GL_INTENSITY_SNORM' : 'pass'}
Testing GL_INTENSITY8_SNORM
PIGLIT:subtest {'GL_INTENSITY8_SNORM' : 'pass'}
Testing GL_R16_SNORM
Probe at (53,0)
  Expected: 0.810000 0.000000 0.000000 1.000000
  Observed: 0.794366 0.000000 0.000000 1.000000
  when testing FBO result, blending with DST_COLOR.
PIGLIT:subtest {'GL_R16_SNORM' : 'fail'}
Testing GL_RG16_SNORM
Probe at (32,0)
  Expected: 0.480000 0.800000 0.000000 1.000000
  Observed: 0.495590 0.800012 0.000000 1.000000
  when testing FBO result, blending with CONSTANT_COLOR.
Probe at (53,0)
  Expected: 0.810000 0.360000 0.000000 1.000000
  Observed: 0.825587 0.375622 0.000000 1.000000
  when testing FBO result, blending with DST_COLOR.
Probe at (74,0)
  Expected: 0.760000 0.850000 0.000000 1.000000
  Observed: 0.791131 0.881130 0.000000 1.000000
  when testing FBO result, blending with SRC_COLOR.
Probe at (117,0)
  Expected: 0.760000 0.800000 0.000000 1.000000
  Observed: 0.791131 0.800012 0.000000 1.000000
  when testing FBO result, blending with SRC_ALPHA.
PIGLIT:subtest {'GL_RG16_SNORM' : 'fail'}
Testing GL_RGB16_SNORM
Probe at (32,0)
  Expected: 0.480000 0.800000 0.680000 1.000000
  Observed: 0.495590 0.800012 0.679983 1.000000
  when testing FBO result, blending with CONSTANT_COLOR.
Probe at (53,0)
  Expected: 0.810000 0.360000 0.560000 1.000000
  Observed: 0.825587 0.375622 0.560045 1.000000
  when testing FBO result, blending with DST_COLOR.
Probe at (74,0)
  Expected: 0.760000 0.850000 0.730000 1.000000
  Observed: 0.791131 0.881130 0.730003 1.000000
  when testing FBO result, blending with SRC_COLOR.
Probe at (117,0)
  Expected: 0.760000 0.800000 0.720000 1.000000
  Observed: 0.791131 0.800012 0.735557 1.000000
  when testing FBO result, blending with SRC_ALPHA.
PIGLIT:subtest {'GL_RGB16_SNORM' : 'fail'}
Testing GL_RGBA16_SNORM
Probe at (32,0)
  Expected: 0.480000 0.800000 0.680000 0.500000
  Observed: 0.495590 0.800012 0.679983 0.515580
  when testing FBO result, blending with CONSTANT_COLOR.
Probe at (53,0)
  Expected: 0.810000 0.360000 0.560000 0.700000
  Observed: 0.825587 0.375622 0.560045 0.731162
  when testing FBO result, blending with DST_COLOR.
Probe at (74,0)
  Expected: 0.760000 0.850000 0.730000 0.740000
  Observed: 0.791131 0.881130 0.730003 0.755577
  when testing FBO result, blending with SRC_COLOR.
Probe at (96,0)
  Expected: 0.850000 0.350000 0.600000 0.700000
  Observed: 0.881130 0.381146 0.615558 0.731162
  when testing FBO result, blending with DST_ALPHA.
Probe at (117,0)
  Expected: 0.760000 0.800000 0.720000 0.740000
  Observed: 0.791131 0.800012 0.735557 0.755577
  when testing FBO result, blending with SRC_ALPHA.
PIGLIT:subtest {'GL_RGBA16_SNORM' : 'fail'}
Testing GL_ALPHA16_SNORM
Probe at (53,0)
  Expected: 0.000000 0.000000 0.000000 0.700000
  Observed: 0.000000 0.000000 0.000000 0.715567
  when testing FBO result, blending with DST_COLOR.
Probe at (96,0)
  Expected: 0.000000 0.000000 0.000000 0.700000
  Observed: 0.000000 0.000000 0.000000 0.715567
  when testing FBO result, blending with DST_ALPHA.
PIGLIT:subtest {'GL_ALPHA16_SNORM' : 'fail'}
Testing GL_LUMINANCE16_SNORM
Probe at (53,0)
  Expected: 0.810000 0.000000 0.000000 1.000000
  Observed: 0.794366 0.000000 0.000000 1.000000
  when testing FBO result, blending with DST_COLOR.
PIGLIT:subtest {'GL_LUMINANCE16_SNORM' : 'fail'}
Testing GL_LUMINANCE16_ALPHA16_SNORM
Probe at (32,0)
  Expected: 0.480000 0.000000 0.000000 0.500000
  Observed: 0.495590 0.000000 0.000000 0.515580
  when testing FBO result, blending with CONSTANT_COLOR.
Probe at (53,0)
  Expected: 0.810000 0.000000 0.000000 0.700000
  Observed: 0.825587 0.000000 0.000000 0.731162
  when testing FBO result, blending with DST_COLOR.
Probe at (74,0)
  Expected: 0.760000 0.000000 0.000000 0.740000
  Observed: 0.791131 0.000000 0.000000 0.755577
  when testing FBO result, blending with SRC_COLOR.
Probe at (96,0)
  Expected: 0.850000 0.000000 0.000000 0.700000
  Observed: 0.881130 0.000000 0.000000 0.731162
  when testing FBO result, blending with DST_ALPHA.
Probe at (117,0)
  Expected: 0.760000 0.000000 0.000000 0.740000
  Observed: 0.791131 0.000000 0.000000 0.755577
  when testing FBO result, blending with SRC_ALPHA.
PIGLIT:subtest {'GL_LUMINANCE16_ALPHA16_SNORM' : 'fail'}
Testing GL_INTENSITY16_SNORM
Probe at (53,0)
  Expected: 0.810000 0.000000 0.000000 1.000000
  Observed: 0.794366 0.000000 0.000000 1.000000
  when testing FBO result, blending with DST_COLOR.
PIGLIT:subtest {'GL_INTENSITY16_SNORM' : 'fail'}
PIGLIT: {'result': 'fail' }


af59e9adbd4c972d480d58260b03768c85eb2067 is the first bad commit
commit af59e9adbd4c972d480d58260b03768c85eb2067
Author: Nadav Rotem <nrotem at apple.com>
Date:   Fri Dec 7 21:43:11 2012 +0000

    When we use the BLEND instruction that uses the MSB as a mask, we can
remove
    the VSRI instruction before it since it does not affect the MSB.

    Thanks Craig Topper for suggesting this.



    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169638
91177308-0d34-0410-b5e6-96231b3b80d8

:040000 040000 417de3c2f874400ce5dd52beaae45750abffded2
a643294f53939ffe91ef157624950075220ba97e M    lib
:040000 040000 dd0d94ffed28fe9a83aea51c59113d64b1a62cc6
77db76d9de2dbeb258c22f39bf228605d7239af7 M    test

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