297fd0d0755bda698be1d0b30cc60a41d7673c0b is the first bad commit
commit 297fd0d0755bda698be1d0b30cc60a41d7673c0b
Author: Dave Airlie <airlied@redhat.com>
Date:   Tue Oct 16 16:15:16 2012 +1000

    nouveau/dri2: fix pixmap/window offset calcs.
    
    This should fix prime rendering under kwin, and not break it under the
    others.
    
    Signed-off-by: Dave Airlie <airlied@redhat.com>

:040000 040000 10860842c2d9ff579e3e0b46b1edfc332d40b311 886ca8b5c05779ee410c6d14575b4805016b71af M	src