iris: Use core image deref lowering?
We should consider setting PIPE_CAP_NIR_IMAGES_AS_DEREF
to 0 in iris, and using @anholt's new core image deref lowering code.
We should consider setting PIPE_CAP_NIR_IMAGES_AS_DEREF
to 0 in iris, and using @anholt's new core image deref lowering code.