st/mesa: lower images when needed

The "st/pbo download FS" builtin shader uses image derefs, so even with
PIPE_CAP_NIR_IMAGES_AS_DEREF set to 0 drivers ended up with those.

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5480>
1 file changed