panfrost: Use packs for fragment properties

A bit more complicated, since there are dependencies on other state (for
early-z and discard handling). We separate this cleanly to help defer
packing later.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6440>
1 file changed