https://bugs.freedesktop.org/show_bug.cgi?id=99403

            Bug ID: 99403
           Summary: Graphical glitches in witcher-1 with wine nine and
                    r600g (rv740).
           Product: Mesa
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: roman.elshin@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 128941
  --> https://bugs.freedesktop.org/attachment.cgi?id=128941&action=edit
screenshot

Very similar (but visually not exactly identical) glitches exists without nine,
but there are workaround in wine:
[HKEY_CURRENT_USER\Software\Wine\Direct3D]
CheckFloatConstants="enabled"
which helps with it. This key does not make a difference with nine.
There are no such problem with nouveau (750ti) here, os ubuntu-16.04 with oibaf
and commendsarnex ppa.

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