[Bug 91444] regression bisected radeonsi: don't change pipe_resource in resource_copy_region

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91444

            Bug ID: 91444
           Summary: regression bisected radeonsi: don't change
                    pipe_resource in resource_copy_region
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: shawn.starr at rogers.com
        QA Contact: dri-devel at lists.freedesktop.org

While playing ARK: Survival Evolved, I ran into image corruption and can
reproduce it easy in game, it came down to this commit:

commit 46b2b3bda8d962fce02838e09c742ac06fbec45f
Author: Marek Olšák <marek.olsak at amd.com>
Date:   Thu Jul 16 13:17:14 2015 +0200

    radeonsi: don't change pipe_resource in resource_copy_region

    Copied from r600g. pipe_resource can be shared by multiple threads, so we
    shouldn't change it.

    Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>


Reverting this fixed corruption seen, I've attached a picture of the corruption
noticed, but it manifests itself in striped transparency of certain objects.

See attachment of image

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