https://bugs.freedesktop.org/show_bug.cgi?id=93648
Bug ID: 93648 Summary: Random lines being rendered when playing Dolphin on radeonsi (w/ apitrace) Product: Mesa Version: git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: delroth@gmail.com QA Contact: dri-devel@lists.freedesktop.org
We recently setup Dolphin's automated rendering tests on Fiji XT with Mesa/amdgpu. It started detected a random rendering issue which I think we can attribute to a driver bug.
See https://fifoci.dolphin-emu.org/compare/1086020-1085934/ . Left side has the "bad" rendering, right side the "good" rendering.
The issue is properly captured in this apitrace: http://delroth.net/radeon-unpredictable.trace -- rendering it on my Fiji XT system shows the lines but rendering it on i965 doesn't.
We have also had reports of users seeing this in action on Pitcairn GPUs: https://bugs.dolphin-emu.org/issues/9239