Significantly improve the stress impose upon the tiled BLT operations. Also start dumping pngs of the failures. References: https://bugs.freedesktop.org/show_bug.cgi?id=80033 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Right-shifting by a negative value is undefined. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Another reference test to exercise simple composite pathways clearly. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>