[Bug 75291] New: [ILK Bisected]Piglit/shaders_glsl-bug-22603 fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75291

          Priority: high
            Bug ID: 75291
                CC: idr at freedesktop.org
          Assignee: kenneth at whitecape.org
           Summary: [ILK Bisected]Piglit/shaders_glsl-bug-22603 fails
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: major
    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: Ironlake
Libdrm:       
(master)libdrm-2.4.52-4-gc5de5abbd90333fe1359283fb3a5e457b0f389f3
Mesa:        (master)57405605a8c320f9d6ea389afd43ce6f013330a5
Xserver:   
(master)xorg-server-1.15.0-627-gf34dc7fa96457ea6a0703493d74e63cca357712e
Xf86_video_intel:(master)2.99.910-47-gc91af569ee90a832899c9038badd84921e9a87fc
Cairo:        (master)4144307dbfbe7b297135d9ea4b080cae7e06b997
Libva:        (staging)fae9c44816a4c3cfc480d2879d1b4a0c1c3a1527
Libva_intel_driver:(staging)bd630edd844b88ea543a027654db296ff7da16cd
Kernel:    (drm-intel-nightly) 164a4cb4c1431a0689f85507868356fae24da638

Bug detailed description:
-------------------------
It fails on Ironlake with mesa master branch, works well on 10.1 branch.
Following piglit cases also fail with same bisect commit:
spec_ARB_depth_texture_fbo-depth-GL_DEPTH_COMPONENT24-drawpixels    
spec_ARB_depth_texture_fbo-depth-GL_DEPTH_COMPONENT32-drawpixels    
spec_EXT_framebuffer_object_fbo-alphatest-nocolor    
spec_EXT_framebuffer_object_fbo-alphatest-nocolor-ff    

Bisect shows: 09d9a8913e8c28fc4c1c60d7da85a2f093786894 is the first bad commit.
commit 09d9a8913e8c28fc4c1c60d7da85a2f093786894
Author:     Kenneth Graunke <kenneth at whitecape.org>
AuthorDate: Fri Feb 7 22:22:45 2014 -0800
Commit:     Kenneth Graunke <kenneth at whitecape.org>
CommitDate: Wed Feb 19 01:46:16 2014 -0800

    i965: Pull format conversion logic out of brw_depthbuffer_format.

    brw_depthbuffer_format is not very reusable at the moment, since it
    uses global state (ctx->DrawBuffer) to access a particular depth buffer.

    For HiZ on Broadwell, I need a function which simply converts the
    formats.  However, at least one existing user of brw_depthbuffer_format
    really wants the existing interface.  So, I've created a new function.

    Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
    Reviewed-by: Eric Anholt <eric at anholt.net>


output:
Probe color at (500,400)
  Expected: 0.300000 0.300000 0.300000
  Observed: 0.600000 0.600000 0.600000
Probe color at (220,300)
  Expected: 0.100000 0.100000 0.100000
  Observed: 0.800000 0.800000 0.800000
Probe color at (450,350)
  Expected: 0.300000 0.300000 0.300000
  Observed: 0.600000 0.600000 0.600000
Probe color at (270,350)
  Expected: 0.100000 0.100000 0.100000
  Observed: 0.729412 0.729412 0.729412
Probe color at (270,225)
  Expected: 0.010000 0.010000 0.010000
  Observed: 0.592157 0.592157 0.592157
Probe color at (450,250)
  Expected: 0.090000 0.090000 0.090000
  Observed: 0.600000 0.600000 0.600000
PIGLIT: {'result': 'fail' }


Reproduce steps:
-------------------------
1. xinit
2. ./bin/glsl-bug-22603 -fbo -auto

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-3d-bugs/attachments/20140221/afc4efab/attachment.html>