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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [GEN9+] Misrendering and 5% performance drop in GfxBench Manhattan 3.0 & CarChase"
href="https://bugs.freedesktop.org/show_bug.cgi?id=103258">103258</a>
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<th>Summary</th>
<td>[GEN9+] Misrendering and 5% performance drop in GfxBench Manhattan 3.0 & CarChase
</td>
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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>Other
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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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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<th>CC</th>
<td>martin.peres@free.fr
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<pre>Created <span class=""><a href="attachment.cgi?id=134830" name="attach_134830" title="Example of Manhattan 3.0 misrendering">attachment 134830</a> <a href="attachment.cgi?id=134830&action=edit" title="Example of Manhattan 3.0 misrendering">[details]</a></span>
Example of Manhattan 3.0 misrendering
Between following Mesa commits:
e676434856 2017-10-10 17:45:22 UTC Implement a new GL_MESA_tile_raster_order
extension
3c66a461f3 2017-10-11 17:45:31 UTC meson: fix glx test
Manhattan 3.0 rendering has broken, there are now two transparent horizontal
bands on top of the screen bottom. See the attachment.
Additionally there was (values are from KLB GT3e):
* 5-6% perf drop in CarChase
* 4% perf drop in Manhattan 3.1
These regressions happen on all GEN9+ platforms.
Martin's bisecting this, I'll add the exact commit once the bisecting finishes.
(Additionally, with Mesa Git tip, I'm also getting GfxBench NULL pointer
segfault/aborts when testfw_app starts, at least on SKL GT2.)</pre>
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