We cannot rely on the client to provide a surface filling the output so
we must specify what happens with the outputs area that is not covered
completely.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
f1bb57dd31