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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>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [llvmpipe] [softpipe] piglit read-front regression"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94254">94254</a>
</td>
</tr>
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<th>Summary</th>
<td>[llvmpipe] [softpipe] piglit read-front regression
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>11.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>bisected, regression
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Mesa core
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>vlee@freedesktop.org
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>brianp@vmware.com, idr@freedesktop.org, jfonseca@vmware.com, marta.lofstedt@intel.com, nanleychery@gmail.com
</td>
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<pre>mesa: 2999257e0fe703f73d32620fed88040d29ac5bac (master 11.3.0-devel)
$ ./bin/read-front -auto
Probe color at (0,0)
Expected: 0.000000 0.000000 1.000000
Observed: -0.000000 0.000000 0.000000
Probe color at (0,80)
Expected: 0.000000 1.000000 0.000000
Observed: -0.000000 0.000000 0.000000
PIGLIT: {"result": "fail" }
605832736a6d9427ad894d403cceeb74a5b18dc1 is the first bad commit
commit 605832736a6d9427ad894d403cceeb74a5b18dc1
Author: Nanley Chery <<a href="mailto:nanley.g.chery@intel.com">nanley.g.chery@intel.com</a>>
Date: Fri Feb 5 16:21:33 2016 -0800
mesa/readpix: Clip ReadPixels() area to the ReadBuffer's
The fast path for Intel's ReadPixels() unintentionally omits clipping
the specified area to a valid one. Rather than clip in various
corner-cases, perform this operation in the API validation stage.
The bug in intel_readpixels_tiled_memcpy() showed itself when the winsys
ReadBuffer's height was smaller than the one specified by ReadPixels().
yoffset became negative, which was an invalid input for tiled_to_linear().
v2: Move clipping to validation stage (Jason)
Bugzilla: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [SKL] ES2-CTS.gtf.GL2ExtensionTests.compressed_astc_texture.compressed_astc_texture fails"
href="show_bug.cgi?id=92193">https://bugs.freedesktop.org/show_bug.cgi?id=92193</a>
Reported-by: Marta Löfstedt <<a href="mailto:marta.lofstedt@intel.com">marta.lofstedt@intel.com</a>>
Cc: "11.0 11.1" <<a href="mailto:mesa-stable@lists.freedesktop.org">mesa-stable@lists.freedesktop.org</a>>
Signed-off-by: Nanley Chery <<a href="mailto:nanley.g.chery@intel.com">nanley.g.chery@intel.com</a>>
Reviewed-by: Ian Romanick <<a href="mailto:ian.d.romanick@intel.com">ian.d.romanick@intel.com</a>>
Reviewed-by: Brian Paul <<a href="mailto:brianp@vmware.com">brianp@vmware.com</a>>
:040000 040000 0f8b2af912e9f15eb83e20c0dfbf625fc7577e6b
08261118001653553be85da5b3d8f9bd3a7ad6f8 M src
bisect run success</pre>
</div>
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