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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Trilinear sampling on cubemap wrongly sampled at the border of rasterized triangle on HAWAII"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88642">88642</a>
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<th>Summary</th>
<td>Trilinear sampling on cubemap wrongly sampled at the border of rasterized triangle on HAWAII
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>10.4
</td>
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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/Gallium/radeonsi
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<th>Assignee</th>
<td>dri-devel@lists.freedesktop.org
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<th>Reporter</th>
<td>vljn@ovi.com
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<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=112566" name="attach_112566" title="Test case">attachment 112566</a> <a href="attachment.cgi?id=112566&action=edit" title="Test case">[details]</a></span>
Test case
Hi,
on a R290X with a fresh fedora 21 install (Mesa 10.4.1) a fragment shader
sampling a cubemap texture with trilinear filtering is not correctly executed
on the edge of rasterized triangles.
I've included a patch against piglit that display the behaviour. On my system
the test display a small orange diagonal line on top of the color pattern.
(the test doesn't check result atm)
I think it's related to some quad pattern : in my app that has a depth buffer
the line follows the edge of the geometry.</pre>
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