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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [bisected] Performance regression in X4:Foundations in 19.2"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111576">111576</a>
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<th>Summary</th>
<td>[bisected] Performance regression in X4:Foundations in 19.2
</td>
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<th>Product</th>
<td>Mesa
</td>
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<th>Version</th>
<td>19.2
</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>not set
</td>
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<th>Priority</th>
<td>not set
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<th>Component</th>
<td>Drivers/Vulkan/radeon
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>malte@zuklampen.com
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
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<p>
<div>
<pre>Somewhere between mesa-19.1.6 and mesa-19.2.0-rc2 a severe performance
regression in X4:Foundations snuck in.
The main menu (and gameplay) renders at <1 fps after
74470baebbdacc8fd31c9912eb8c00c0cd102903, ac/nir: Lower large indirect
variables to scratch
I tried adjusting graphics settings to perhaps isolate one specific option, but
it didn't seem to matter.
I then checked out mesa-19.2-rc2 and reverted the commit, after which the game
rendered normally at 60fps.
GPU: AMD RX480
LLVM: 8.0.1
Kernel: 5.2.7
I'll be happy to help diagnose further but I'm at my wits' end.</pre>
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