https://bugs.freedesktop.org/show_bug.cgi?id=109075
Bug ID: 109075
Summary: radv: New D3D boolean optimizations cause GPU hang in
Witcher 3
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Vulkan/radeon
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Hello,
the following commit introduces a GPU hang in Witcher 3 on RADV:
commit 6bcd2af0863aea9d9d3519300a75820d012e1160
Author: Jason Ekstrand <[email protected]>
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):
https://mega.nz/#!5CgAgAzZ!k9ZmQDVIiqXynhoJ0xEZmrRJpDr-7yYYc8CtMGnKjfo
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