So my testcase was "fixed" by:
commit 1565917f10d9fb3c7e2e7e273173c38c364b9861 Author: Chris Wilson <email address hidden> 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?
So my testcase was "fixed" by:
commit 1565917f10d9fb3 c7e2e7e273173c3 8c364b9861
Author: Chris Wilson <email address hidden>
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?