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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - radv: New D3D boolean optimizations cause GPU hang in Witcher 3"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109075">109075</a>
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<th>Summary</th>
<td>radv: New D3D boolean optimizations cause GPU hang in Witcher 3
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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/Vulkan/radeon
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<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
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<th>Reporter</th>
<td>philip.rebohle@tu-dortmund.de
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<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
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<pre>Hello,
the following commit introduces a GPU hang in Witcher 3 on RADV:
commit 6bcd2af0863aea9d9d3519300a75820d012e1160
Author: Jason Ekstrand <<a href="mailto:jason.ekstrand@intel.com">jason.ekstrand@intel.com</a>>
Date: Fri Oct 19 16:58:36 2018 -0500
nir/algebraic: Add some optimizations for D3D-style Booleans
Specifically, the following optimization seems to be the culprit, as commenting
it out fixes it:
(('iand', ('ineg', ('b2i', a)), '1.0@32'), ('b2f', a)),
A Renderdoc capture to reproduce the hang can be found here (recorded with
Renderdoc 1.2 on Polaris):
<a href="https://mega.nz/#!5CgAgAzZ!k9ZmQDVIiqXynhoJ0xEZmrRJpDr-7yYYc8CtMGnKjfo">https://mega.nz/#!5CgAgAzZ!k9ZmQDVIiqXynhoJ0xEZmrRJpDr-7yYYc8CtMGnKjfo</a></pre>
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