https://bugs.freedesktop.org/show_bug.cgi?id=109331

            Bug ID: 109331
           Summary: Empire Total War - Graphical Corruption
           Product: Mesa
           Version: 18.3
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: andrew.m.mcmahon@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 143078
  --> https://bugs.freedesktop.org/attachment.cgi?id=143078&action=edit
glxinfo | grep strings

4.20.0-arch1-1-ARCH
mesa 18.3.1-1
steam 1.0.0.59-1
R9 285 (Tonga)

In game menus and other game play elements aren't rendered correctly by
default:
https://imgur.com/a/AvclRkS

There are no special steps required to replicate the issue.

Affects other Linux distributions and other cards:
https://steamcommunity.com/app/10500/discussions/0/1319962244123571976/

A known workaround for the problem is to edit:

~/.local/share/feral-interactive/Empire/preferences

Changing the value of the following line to zero:

<value name="UsePBOSurfaces" type="integer">1</value>

There doesn't appear to be any downside to this.
Medieval 2 Total War doesn't appear to be affected on my setup.
Unable to test Shogun 2 or Fall of the Samurai as I don't have access to those.

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