[Bug 55500] [sna gen4] corrupt rendering (and flickering on redraw)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=55500

--- Comment #48 from Chris Wilson <chris at chris-wilson.co.uk> ---
So my testcase was "fixed" by:

commit 1565917f10d9fb3c7e2e7e273173c38c364b9861
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Feb 5 10:11:14 2013 +0000

    sna/gen4: Disable non-rectilinear GPU span compositing

    This seems to be the primary victim of the render corruption, so disable
    until the root cause is fixed.

Can you please check your worst-case / typical behaviours and see if any still
remain?

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