This should make nir_lower_tex properly handle deref instructions as
well as make it more correct when texture arrays are used and it's
called after lowering samplers to binding table indices.
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>