[Bug 52950] New: [r200] piglit glean/blendFunc test fails

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https://bugs.freedesktop.org/show_bug.cgi?id=52950

             Bug #: 52950
           Summary: [r200] piglit glean/blendFunc test fails
    Classification: Unclassified
           Product: Mesa
           Version: 8.0
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/r200
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: mister.freeman@laposte.net


System configuration :

- radeon 9000 AGP ( M9, rv250 )
- laptop pentium 4 2.4 Ghz 1.25 Gb ram
- archlinux 32 bits

Step to reproduce the bug

- mesa 8.0.4 release ( but the bug occurs also with the git version )
- a graphic card who uses the r200 driver 
- install piglit ( git version )
- run the glean test "blendFunc" in piglit :

./piglit-run.py  -t "glean/blendFunc" tests/quick.tests results/quick

the glean/blendFunc will fail with these error messages :

First failing pixel is at row 11 column 24
Actual values are (0, 0, 0, 0.54902)
Expected values are (0, 0, 0, 0.557007)
Errors are (0, 0, 0, 0.00798696)
Source values are (0.462745, 0.756863, 0.662745, 0.546639)
Destination values are (0.819608, 0.0980392, 0.615686, 0.0509804)
blendFunc:  FAIL rgba8, db, z24, s8, win+pmap, id 33
    source factor RGB = GL_ZERO, source factor A = GL_ONE_MINUS_DST_COLOR
    dest factor RGB = GL_ZERO, dest factor A = GL_CONSTANT_COLOR
    equation RGB = GL_FUNC_ADD, equation A = GL_FUNC_ADD
    const color = { 0.25, 0, 1, 0.75 }
    Readback had 0 bits in error; blending had 1.03186 bits in error.

First failing pixel is at row 7 column 27
Actual values are (0.682353, 0.682353, 0.92549, 0.756863)
Expected values are (0.682353, 0.682353, 0.92549, 0.765417)
Errors are (0, 0, 0, 0.0085544)
Source values are (0.682353, 0.968627, 0.243137, 0.761929)
Destination values are (0.682353, 0.682353, 0.92549, 0.0156863)
blendFunc:  FAIL rgba8, db, z24, s8, win+pmap, id 33
    source factor RGB = GL_ZERO, source factor A = GL_ONE_MINUS_DST_COLOR
    dest factor RGB = GL_ONE, dest factor A = GL_ONE_MINUS_DST_ALPHA
    equation RGB = GL_FUNC_ADD, equation A = GL_FUNC_ADD
    const color = { 0.25, 0, 1, 0.75 }
    Readback had 0 bits in error; blending had 1.13088 bits in error.

First failing pixel is at row 1 column 16
Actual values are (0.0705882, 0.298039, 0.243137, 0.74902)
Expected values are (0.0693272, 0.296286, 0.245752, 0.756865)
Errors are (0.00126106, 0.00175321, 0.00261439, 0.00784552)
Source values are (0.909804, 0.694118, 0.0784314, 0.804654)
Destination values are (0.768627, 0.968627, 0.266667, 0.0784314)
blendFunc:  FAIL rgba8, db, z24, s8, win+pmap, id 33
    source factor RGB = GL_ZERO, source factor A = GL_ONE_MINUS_DST_COLOR
    dest factor RGB = GL_ONE_MINUS_SRC_COLOR, dest factor A =
GL_ONE_MINUS_SRC_ALPHA
    equation RGB = GL_FUNC_ADD, equation A = GL_FUNC_ADD
    const color = { 0.25, 0, 1, 0.75 }
    Readback had 0 bits in error; blending had 1.00608 bits in error.

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