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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Commit 4457345 causes 2 DrawElements test regressions"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88247">88247</a>
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<th>Summary</th>
<td>Commit 4457345 causes 2 DrawElements test regressions
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<th>Product</th>
<td>Mesa
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<th>Version</th>
<td>git
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<th>Hardware</th>
<td>x86-64 (AMD64)
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<th>OS</th>
<td>Linux (All)
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
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<th>Component</th>
<td>Drivers/DRI/i965
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<th>Assignee</th>
<td>idr@freedesktop.org
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<th>Reporter</th>
<td>michael.w.mason@intel.com
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<pre>Environment:
Mesa: (master 934e41c0b31cffa4efc08f61cff2389e3149b3f3)
Ubuntu 14.04
Commit 4457345 "i965/vec4: Add pass to gather constants into a vector-float
MOV" caused regressions in the following 2 DrawElements tests:
dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler2dshadow_vertex
dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler2darrayshadow_vertex
Analysis:
Bisect shows 44573458bdc52acc304fb75d6df502312b8e149c is the first bad commit.
Author: Matt Turner <<a href="mailto:mattst88@gmail.com">mattst88@gmail.com</a>>
Date: Sat Dec 20 11:50:31 2014 -0800
i965/vec4: Add pass to gather constants into a vector-float MOV.
Currently only handles consecutive instructions with the same
destination that collectively write all channels.
total instructions in shared programs: 5879798 -> 5869011 (-0.18%)
instructions in affected programs: 465236 -> 454449 (-2.32%)
Reviewed-by: Ian Romanick <<a href="mailto:ian.d.romanick@intel.com">ian.d.romanick@intel.com</a>>
Steps to reproduce:
# ./deqp-gles3
--deqp-case=dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler2dshadow_vertex
# ./deqp-gles3
--deqp-case=dEQP-GLES3.functional.shaders.texture_functions.texturegradoffset.sampler2darrayshadow_vertex</pre>
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