pan/bi: Add support for tex offsets

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <!7530>
41 jobs for !7530 with bifrost-gles3 in 9 minutes and 50 seconds (queued for 4 seconds)
merge request