ReadonlygenerationReadonlyincompleteClimb reads that gave up waiting; see BVH_REFIT_STAT. Non-zero means the repair pass ran.
ReadonlyrelativesummedHalfArea over the root's half-area: relativeSahCost of the refit tree.
Readonlyrepairs1 when the repair pass refit the tree again.
ReadonlyrootReadonlyrootsReadonlysummedSummed half-area of every inner node, the root included.
One refit's summary, read back a frame or two later.