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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB] SynMark GSCloth test renders wrong"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103824">103824</a>
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<th>Summary</th>
<td>[SNB] SynMark GSCloth test renders wrong
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>git
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>All
</td>
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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>intel-3d-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>eero.t.tamminen@intel.com
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=135603" name="attach_135603" title="Incorrect rendering screenshot">attachment 135603</a> <a href="attachment.cgi?id=135603&action=edit" title="Incorrect rendering screenshot">[details]</a></span>
Incorrect rendering screenshot
Mesa fails SynMark render validation for OglGSCloth test on SNB:
./synmark2 OglGSCoth
Rendering is obviously incorrect (see the the attachment). Francesco's recent
GEN6-7 Transform feedback optimization patch series seems to make this somewhat
worse.
I don't know whether Mesa has ever rendered it correctly on SNB, the issue has
been there at least a year. Rendering is fine on GEN7+ (also with Francesco's
patch series).
Unlike most of the other tests we run regularly (which work fine), GSCloth uses
geometry shaders, streamout and transform feedback. GfxBench Manhattan uses
also transform feedback, but that at least didn't have obvious rendering issues
on SNB like this test.</pre>
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