Packs one instance into its table entry (TOP_LEVEL_INSTANCE_ENTRY_WORDS
words at base), and returns whether its transform can be inverted (a
singular one is written with live 0: rays never see it, as the CPU top
level skips it). The record's flags are written as buildTopLevel
writes them.
Packs one instance into its table entry (
TOP_LEVEL_INSTANCE_ENTRY_WORDSwords atbase), and returns whether its transform can be inverted (a singular one is written withlive0: rays never see it, as the CPU top level skips it). The record's flags are written as buildTopLevel writes them.