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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 --- - [ILK Bisected]Piglit glean_texCombine4 fails"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77703">77703</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>juhapekka.heikkila@gmail.com
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[ILK Bisected]Piglit glean_texCombine4 fails
</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>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>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr></table>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=97654" name="attach_97654" title="output">attachment 97654</a> <a href="attachment.cgi?id=97654&action=edit" title="output">[details]</a></span>
output
System Environment:
--------------------------
Platform: Ironlake
Libdrm:
(master)libdrm-2.4.53-6-gd4083dc762a2974c35ecd16be995272bbb6d57b4
Mesa: (master)ba6dcb3c2b8f516b120f591144bf6c3751f0e3f9
Xserver:
(master)xorg-server-1.15.99.902-20-gc7011249d2abe6cc7af82ee4b79d8f6873444707
Xf86_video_intel:(master)2.99.911-89-g08e71e1820d6fcb6829b4ebd360beadc1f250295
Libva: (staging)5e10a246287fa2dd3fae2bf756a5b33087cc097c
Libva_intel_driver:(staging)782b8afdda14f000874d8acf51c3e8c490d55773
Kernel: (drm-intel-nightly)1e771b84e47085ef9b6efea1321e7cb5a8b2c06
Bug detailed description:
-----------------------------
It fails on Ironlake platforms with mesa master branch, and works well on 10.1
branch.
Bisect shows: 2dfbbeca50b95ccdd714d9baa4411c779f6a20d9 is the first bad commit.
commit 2dfbbeca50b95ccdd714d9baa4411c779f6a20d9
Author: Juha-Pekka Heikkila <<a href="mailto:juhapekka.heikkila@gmail.com">juhapekka.heikkila@gmail.com</a>>
AuthorDate: Fri Mar 28 15:28:31 2014 +0200
Commit: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
CommitDate: Wed Apr 16 22:46:45 2014 -0700
i965/vec4: Change vec4_visitor::emit_lrp to use MAC for gen<6
This allows us to emit ADD/MUL/MAC instead of MUL/ADD/MUL/ADD,
saving one instruction and two temporary registers.
Reviewed-by: Kenneth Graunke <<a href="mailto:kenneth@whitecape.org">kenneth@whitecape.org</a>>
Reviewed-by: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
Signed-off-by: Juha-Pekka Heikkila <<a href="mailto:juhapekka.heikkila@gmail.com">juhapekka.heikkila@gmail.com</a>>
Reproduce steps:
----------------------------
1. xinit
2. ./bin/glean -o -v -v -v -t +texCombine4</pre>
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