[Bug 82643] New: [BDW Bisected]Piglit spec_ARB_clear_texture_arb_clear_texture-multisample fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82643

          Priority: high
            Bug ID: 82643
                CC: idr at freedesktop.org
          Assignee: kenneth at whitecape.org
           Summary: [BDW Bisected]Piglit
                    spec_ARB_clear_texture_arb_clear_texture-multisample
                    fails
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/i965
           Product: Mesa

System Environment:
--------------------------
Platform: BDW
Libdrm:       
(master)libdrm-2.4.56-4-g07fead4462b2d537d0c3cae69a09272fc426c598
Mesa:        (master)c66d928f2c9fa59e162c391fbdd37df969959718
Xserver:   
(master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a
Xf86_video_intel:(master)2.99.914-47-gd974dabc8ac06e76bffe5824caf86fd072c35ed3
Libva:        (master)3fddb7f937df4e0e15391bd65ae3c7552ea5b3d7
Libva_intel_driver:(master)82d2ed8d7da3619c0ea467c06604f5626fc0b901
Kernel:   (drm-intel-nightly)da31e7c60be217316278a055dd3f91c33913270f

Bug detailed description:
---------------------------
It fails on BDW with mesa master branch, works well on 10.2 branch.
Bisect shows:c66d928f2c9fa59e162c391fbdd37df969959718 is the first bad commit
commit c66d928f2c9fa59e162c391fbdd37df969959718
Author:     Kenneth Graunke <kenneth at whitecape.org>
AuthorDate: Thu Jul 17 14:33:15 2014 -0700
Commit:     Kenneth Graunke <kenneth at whitecape.org>
CommitDate: Wed Aug 13 21:19:07 2014 -0700

    i965: Enable INTDIV in SIMD16 mode.

    All we need to do is decompose this to two SIMD8 instructions, like we
    do in many other cases.  We even already have code for that.

    I apparently just botched this last time I tried, and it was easy.

    Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
    Reviewed-by: Matt Turner <mattst88 at gmail.com>

output:
Probe color at (8,8)
  Expected: 0.000000 1.000000 0.000000
  Observed: 1.000000 0.000000 0.000000
Probe color at (10,2)
  Expected: 0.000000 0.000000 0.000000
  Observed: 1.000000 0.000000 0.000000
PIGLIT: {"result": "fail" }


Reproduce steps:
-------------------------
1. xinit
2. bin/arb_clear_texture-multisample -fbo -auto

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