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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - SynMark CSDof misrenders with "i965/surface_state: Get the aux usage from the miptree code""
href="https://bugs.freedesktop.org/show_bug.cgi?id=102289">102289</a>
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<th>Summary</th>
<td>SynMark CSDof misrenders with "i965/surface_state: Get the aux usage from the miptree code"
</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>jason@jlekstrand.net
</td>
</tr>
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<th>Reporter</th>
<td>eero.t.tamminen@intel.com
</td>
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<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
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<pre>Created <span class=""><a href="attachment.cgi?id=133599" name="attach_133599" title="Screenshot (scaled to 1/4 size)">attachment 133599</a> <a href="attachment.cgi?id=133599&action=edit" title="Screenshot (scaled to 1/4 size)">[details]</a></span>
Screenshot (scaled to 1/4 size)
After mid-July, SynMark v7 CSDof has started to fail render validation. This
happens on BXT, GLK, SKL GT2 and KBL GT2:
------------------------------
$ ./synmark2 OglCSDof
...
Validation: Failed - different (1.062 %), different (0.940 %)
------------------------------
It doesn't seem to happen with earlier generations or eDRAM machines.
On every machine & commit the misrendering looks identical to the attached
screenshot. Issue is Mesa specific. There are no errors from kernel.
Bisecting shows following commit to be he culprit:
------------------------------
commit dd75edb42982c1420168d509a7589032f7ead289
Author: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>>
AuthorDate: Wed Jun 21 21:23:20 2017 -0700
Commit: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>>
CommitDate: Sat Jul 22 20:59:22 2017 -0700
i965/surface_state: Get the aux usage from the miptree code
Reviewed-by: Topi Pohjolainen <<a href="mailto:topi.pohjolainen@intel.com">topi.pohjolainen@intel.com</a>>
------------------------------
When running the tests without validation, some of the frames look fine and
some have the misrender on top of it. SynMark validation doesn't always catch
the misrendering, I guess in that case the first frame (used for validation)
doesn't happen to have the error.
I'm filing this separately in case it requires fix separate from <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED - Up to 20% perf drop in texture sampling tests with "i965/surface_state: Get the aux usage from the miptree code""
href="show_bug.cgi?id=102258">bug 102258</a>
perf drop.</pre>
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