[Bug 107334] Artifacts in Unigine Valley with RX 580

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107334

            Bug ID: 107334
           Summary: Artifacts in Unigine Valley with RX 580
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: cwidmer at umbrox.de
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 140780
  --> https://bugs.freedesktop.org/attachment.cgi?id=140780&action=edit
Screenshot showing the issue

In a certain scene during the Unigine Valley benchmark, render artifacts
briefly flash on the screen multiple times. This does not occur with the same
card in another machine running Windows 10 -- neither with the DirectX 11 nor
with the OpenGL renderer -- and it does also not occur on this machine when
using a NVIDIA GeForce GTX 660 instead of the RX 580.
When I tried to get an apitrace, the benchmark slows down a lot during the
scene, skipping parts of it and not showing the artifacts. Additionally, the
replay is stuck on the loading screen and major shader compiler errors are
thrown.

I am using Gentoo with kernel 4.17.9 (with the gentoo patchset) and mesa git
(commit d0ee0a0a5d5fb658c87fed82cbcf9b48437abb2c).

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