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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>high
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [i965 Bisected]Rendercheck blend fails"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=66430">66430</a>
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>xunx.fang@intel.com
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>chris@chris-wilson.co.uk
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[i965 Bisected]Rendercheck blend fails
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>huax.lu@intel.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/intel
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=81774" name="attach_81774" title="output">attachment 81774</a> <a href="attachment.cgi?id=81774&action=edit" title="output">[details]</a></span>
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 <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
AuthorDate: Fri Jun 28 15:59:17 2013 +0100
Commit:     Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
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 <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>


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