[Intel-gfx] [PATCH] sna: Fix the reduction of xy reflection onto rotations.

[Chris Wilson]

On Thu, Aug 13, 2015 at 04:51:37PM -0700, Bob Paauwe wrote:
> When reducing a xy reflection to a 180 degree rotation, make sure
> only one rotation bit is set.  Also by rotating the bit left, we
> can support cases where xy reflection happens with 90/270 degree
> rotation.
> 
> Signed-off-by: Bob Paauwe <bob.j.paauwe at intel.com>

Nice. Took me a few moments to verify the shifting works as expected, so
I left a couple of comments there for my future self.

Thanks, pushed
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre