
This is essentially the old GLSL IR packing pass rewritten as a NIR based pass. Doing this packing in NIR after we have preformed NIRs optimisation passes can give us better packing results. Acked-by: Marek Olšák <marek.olsak@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15731>