Bytes of the per-node projection scratch (position / mask /
faceScratch), allocated once per node and held for its whole life.
Counted into memoryUsed but NOT into bytesLoaded: nothing fetched it, but
the loader's payload really does keep it resident, and it is not small — the
display-space position buffer alone is 12 bytes per vertex. This is the
mesh counterpart of what the siblings report as their accumulator allocation.
Bytes of the per-node projection scratch (
position/mask/faceScratch), allocated once per node and held for its whole life.Counted into
memoryUsedbut NOT intobytesLoaded: nothing fetched it, but the loader's payload really does keep it resident, and it is not small — the display-spacepositionbuffer alone is 12 bytes per vertex. This is the mesh counterpart of what the siblings report as their accumulator allocation.Exported for unit test.