[Bug 88792] New: [BDW Bisected]Piglit spec_ARB_pixel_buffer_object_pbo-read-argb8888 fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88792

            Bug ID: 88792
           Summary: [BDW Bisected]Piglit
                    spec_ARB_pixel_buffer_object_pbo-read-argb8888 fails
           Product: Mesa
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

System Environment:
--------------------------
Platform: BDW
Libdrm:       
(master)libdrm-2.4.59-2-g0c5aaeef51233aec89ee1f43f03d457f278f8fa0
Mesa:        (master)0aa31bf9c37e11c041f951342f38c38907c620ff
Xserver:        (master)xorg-server-1.16.99.902
Xf86_video_intel:       
(master)2.99.917-50-ged19b160089640c2e1167332b00ffe1e569a48dc
Libva:        (master)f9741725839ea144e9a6a1827f74503ee39946c3
Libva_intel_driver:        (master)3d16cf07b6b65b9bd5c2dd855d97558264a12e79
Kernel:   (drm-intel-nightly)67e9eb08a3b967b1ac6b7ec4588a93a2cb030cae

Bug detailed description:
---------------------------
It fails on BDW with mesa master branch, works well on 10.4 branch.
Following  cases also fail with the same bisect commit.
spec_EXT_texture_compression_s3tc_getteximage-targets_S3TC_2D_ARRAY 
spec_EXT_texture_compression_s3tc_getteximage-targets_S3TC_CUBE   
spec_EXT_texture_compression_s3tc_getteximage-targets_S3TC_CUBE_ARRAY   
ES3-CTS.gtf.GL3Tests.pixel_buffer_object.pixel_buffer_object_texture_read
ES3-CTS.gtf.GL3Tests.pixel_buffer_object.pixel_buffer_object_texture_pixelstore

Bisect shows: ef0499af255ecd3a9abbd350ace5e00a744adc0 is the first bad commit.
commit ef0499af255ecd3a9abbd350ace5e00a744adc00
Author:     Jason Ekstrand <jason.ekstrand at intel.com>
AuthorDate: Mon Jan 12 16:20:27 2015 -0800
Commit:     Jason Ekstrand <jason.ekstrand at intel.com>
CommitDate: Thu Jan 22 10:36:25 2015 -0800

    i965/pixel_read: Use meta_pbo_GetTexSubImage for PBO ReadPixels

    Since the meta path can do strictly more than the blitter path, we just
    remove the blitter path entirely.

    Reviewed-by: Neil Roberts <neil at linux.intel.com>


output:
libGL: screen 0 does not appear to be DRI3 capable
libGL: pci id for fd 4: 8086:1616, driver i965
libGL: OpenDriver: trying /opt/X11R7/lib/dri/i965_dri.so
Probe color at (10,10)
  Expected: 0x0000ff00
  Observed: 0x00ff0000
Probe color at (10,10)
  Expected: 0x00ff0000
  Observed: 0x00000000
PIGLIT: {"result": "fail" }

Reproduce steps:
-------------------------
1. xinit
2. bin/pbo-read-argb8888 -auto

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