[Bug 108318] [Polaris] Glitches in New Super Mario Brothers U in Cemu on Polaris only (recent)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108318

            Bug ID: 108318
           Summary: [Polaris] Glitches in New Super Mario Brothers U in
                    Cemu on Polaris only (recent)
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: johngaltfirstrun at gmail.com

Created attachment 141980
  --> https://bugs.freedesktop.org/attachment.cgi?id=141980&action=edit
dmesg from boo

This is a semi recent (within the last few months) bug on Polaris in NSMBU.
Many polygons (maybe?) have major glitches across the screen, or don't show up
at all. This doesn't occur on Tahiti or Pitcairn. I've gone back to 18.2.1 and
verified it still exists, so it must be prior. It also exists on both linux
4.18.12 and the amdgpu-staging-drm-next branch. I'll continue attempting to
bisect, unless someone else knows exactly what the issue is.

There are quite a few GPU faults listed in the attached dmesg, though I'm not
sure if they're related to the issue. Glxinfo, Xorg.0.log, as well as a
screenshot of the issue.

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