End a held draw WITHOUT a sorted ordering for the grown population: rebuild
the active ordering over the whole population from the drawn permutation
(repairSortedIndexForCount: old order first, the appended suffix
after it) and draw everything. The fallback for every path on which no
ordering for the grown population will arrive. No-op when nothing is held.
Parameters
geometry: InstancedBufferGeometry
Returns boolean
true when a hold ended (the drawn population changed), so the
caller can wake a frame under render-on-change.
End a held draw WITHOUT a sorted ordering for the grown population: rebuild the active ordering over the whole population from the drawn permutation (repairSortedIndexForCount: old order first, the appended suffix after it) and draw everything. The fallback for every path on which no ordering for the grown population will arrive. No-op when nothing is held.