View a single LOD level of a multi-LOD source as a single-LOD source — the
inverse of stackLods. Reads (chunk or gather) forward to the parent
with lod: level; metadata is narrowed to that level's counts.
Several selectLod views typically share one parent (one per level, then
re-stacked), so close() is a no-op: the caller owns the parent's
lifetime and closes it once. (A view closing the shared parent would break the
other levels — e.g. a per-level pass that materializes one level.)
View a single LOD level of a multi-LOD source as a single-LOD source — the inverse of stackLods. Reads (chunk or gather) forward to the parent with
lod: level; metadata is narrowed to that level's counts.Several
selectLodviews typically share one parent (one per level, then re-stacked), soclose()is a no-op: the caller owns the parent's lifetime and closes it once. (A view closing the shared parent would break the other levels — e.g. a per-level pass that materializes one level.)