Optionalmaps: anyInput value maps and settings.
Optionalto: any = mapsAn object to contain the results; modifies maps
if not given.
to The given to object; how values are grouped
per-texture per-pass per-step, meta information, and given parameters;
and minimal samples and reads for any given maps.derives.
Maps a full step, creates maps grouping given values per-
textureper-pass per-step, and minimal samples and reads if new values derive from past ones.See