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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [IVB/BYT/BDW Bisected]etqw-demo/Lightsmarkv2008/warsowv1.0/Counter-Strike:source/Half-Life2/Portal/synmark2_v6/unigine-demos/GLbenchmarkv2.5.1/GLbenchmarkv2.7.0/3DMME2.0_taiji/3DMME2.0_hoverjet performance reduced 10%~90%"
href="https://bugs.freedesktop.org/show_bug.cgi?id=82592">82592</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[IVB/BYT/BDW Bisected]etqw-demo/Lightsmarkv2008/warsowv1.0/Counter-Strike:source/Half-Life2/Portal/synmark2_v6/unigine-demos/GLbenchmarkv2.5.1/GLbenchmarkv2.7.0/3DMME2.0_taiji/3DMME2.0_hoverjet performance reduced 10%~90%
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-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>jianx.zhou@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>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
<p>
<div>
<pre>Platform: IVB/BYT/BDW
Libdrm: (master)libdrm-2.4.56-4-g07fead4462b2d537d0c3cae69a09272fc426c598
Mesa: (master)52901ec2615761390f5ef97b11516dae330d27d1
Xserver: (master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f
Xf86_video_intel: (master)2.99.914-46-gec10cef592b7a3d1dc3c4949778e72e8
Cairo: (master)c7ff9bb32e20679d6da4e8a2856be716e5bd9e12
Libva: (master)3fddb7f937df4e0e15391bd65ae3c7552ea5b3d7
Libva_intel_driver: (master)82d2ed8d7da3619c0ea467c06604f5626fc0b901
Kernel_version: drm-intel-nightly(git-723dbb)
Bug detailed description:
----------------------------------------------
etqw-demo/Lightsmarkv2008/warsowv1.0/Counter-Strike:source/Half-Life2/Portal/synmark2_v6(OglBatch0-Oglbatch7/OglDrvRes/OglDrvShCom/OglDrvState/OglGeomPoint/OglGeomTriList/OglGeomTristrip/OglHdrBloom/OglVSDiffuse1/OglVSDiffuse8/OglVSlnstancing/OglVSTangent)unigine-demos/GLbenchmarkv2.5.1/GLbenchmarkv2.7.0/3DMME2.0
taiji/hoverjet performance reduced 10%~90% on IVB/BDW/BYT, this problem doesn't
exist on HSW, The problem exists both on gnome-session and Raw X.
It’s Mesa regression, bisecting show that the first bad commit is:
af13cf609f4257768ad8b80be8cec7f2e6ca8c81
Author: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
AuthorDate: Sun Aug 10 20:06:44 2014 -0700
Commit: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
CommitDate: Tue Aug 12 13:39:25 2014 -0700
i965/vec4: Use MOV, not OR, to set URB write channel mask bits.
Reproduce steps:
---------------------------------------------
1. xinit&
2. ./synmark2 OglBatch0</pre>
</div>
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