[Bug 66430] New: [i965 Bisected]Rendercheck blend fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66430

          Priority: high
            Bug ID: 66430
                CC: xunx.fang at intel.com
          Assignee: chris at chris-wilson.co.uk
           Summary: [i965 Bisected]Rendercheck blend fails
        QA Contact: intel-gfx-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: Driver/intel
           Product: xorg

Created attachment 81774
  --> https://bugs.freedesktop.org/attachment.cgi?id=81774&action=edit
output

System Environment:
--------------------------
Arch:           x86_64
Platform:       Ironlake/sandybridge/ivybridge/haswell
Libdrm:       
(master)libdrm-2.4.45-13-g378bb47a784a3808c9b256fe7a52e10a4fcabf92
Mesa:        (master)adf8afa168fe9fe2e4a2b35afc3003040d05273f
Xserver:   
(master)xorg-server-1.14.99.1-130-g77e51d5bbb97eb5c9d9dbff9a7c44d7e53620e68
Xf86_video_intel:(master)2.21.10-67-g3a787da7e888da7e9943be94bd1cb177fe1495ab
Cairo:        (master)7b8fc77bb974fbd4fbc697405a8b6aec748bb7f2
Libva:        (staging)e9e685fe752b9865ba9e28cb63e18ce3f8aed2a0
Libva_intel_driver:(staging)bb24c8a81e512d19aad0359d81f7247e6f20cc29 Kernel:   
(drm-intel-nightly) 03d25b4548499254d66f1ee0bae8b796097a41ed

Bug detailed description:
-------------------------
It fails on Ironlake/sandybridge/ivybridge/haswell if enable SNA, It works well
with UXA.
Bisect shows:9026bb954646c0425360c2236e26c79d097142cd is the first bad commit.
commit 9026bb954646c0425360c2236e26c79d097142cd
Author:     Chris Wilson <chris at chris-wilson.co.uk>
AuthorDate: Fri Jun 28 15:59:17 2013 +0100
Commit:     Chris Wilson <chris at chris-wilson.co.uk>
CommitDate: Sat Jun 29 16:08:30 2013 +0100

    sna: Inspect the dirty boxes when querying whether damage contains a
rectang

    This helps in the cases where we have subtracted a small number of
    rectangles from an all-damage pixmap (such as a number of successive
    GetImage, PutImage operations). The danger is that we end up searching a
    long list of dirty boxes - maybe just search the first chunk if that
    becomes noticeable?

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>


Reproduce steps:
----------------
1. xinit
2. ./rendercheck -o src,over,overreverse,xor -t blend

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