[Bug 105938] Incorrect colors since "i965: Use blorp instead of meta for PBO texture downloads"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105938

            Bug ID: 105938
           Summary: Incorrect colors since "i965: Use blorp instead of
                    meta for PBO texture downloads"
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: lyude at redhat.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Recently noticed a strange issue come up with my laptop where it seems for
certain rendering operations, the colors channels seem to get swapped:

https://people.freedesktop.org/~lyudess/archive/04-06-2018/Screenshot%20from%202018-04-06%2015-54-06.png

Easy reproducer: load up gnome-shell with the latest mesa (using wayland, no
idea if this happens on X), open up a wayland native application and try taking
a screenshot of it's window.

Bisected down to f933ef00e18ba4a81280d2da0f1b1ed01b387c96 ("i965: Use blorp
instead of meta for PBO texture downloads")

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