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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Severe slowdown on Shadow of Mordor between 17.1.0 and 17.1.1"
href="https://bugs.freedesktop.org/show_bug.cgi?id=101278">101278</a>
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<th>Summary</th>
<td>Severe slowdown on Shadow of Mordor between 17.1.0 and 17.1.1
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>17.1
</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
</td>
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<th>Reporter</th>
<td>nagrigoriadis@gmail.com
</td>
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<th>QA Contact</th>
<td>dri-devel@lists.freedesktop.org
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</tr></table>
<p>
<div>
<pre>Shadow of Mordor slowed down significantly for me on my notebook between Mesa
17.1.0 and 17.1.1
My system:
Gentoo Linux 64-bit
Dell Precision M4700
Intel i7-3720QM quad-core
16 Gig RAM
AMD FirePro M4000 (Cape Verde, 512su, 1GB DDR5 RAM, 675Mhz)
I then did a bisect to find the commit where the slowdown happened (used the
built-in benchmark tool manually, some custom medium-low settings):
35ec26bb00536639b9571f31d8e3f2bcbcfc32fb 30.31fps
ad3b5b7f5f7590fd4359ea3483e2309e4cebc472 18.12fps
So the commit that causes the big slowdown:
<a href="https://cgit.freedesktop.org/mesa/mesa/commit/?h=17.1&id=ad3b5b7f5f7590fd4359ea3483e2309e4cebc472">https://cgit.freedesktop.org/mesa/mesa/commit/?h=17.1&id=ad3b5b7f5f7590fd4359ea3483e2309e4cebc472</a>
seems to be specific to SI, but appears to fix an issue in tessellation.
I double-checked, and tessellation is off in the game settings, so I'm
surprised this caused a performance difference.</pre>
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