True when no chunk missed the cache. A load that touched no chunks (e.g. an empty spatial query, or attributes served by broadcast/array_ref codecs that bypass the proxy) is treated as resident — conservative: it never reports a false miss that would stall progressive refinement.
True if at least one chunk access was recorded.
Accumulates chunk hit/miss outcomes for a single load operation.
A loader sets a fresh accumulator as the proxy's active probe before a demand load, runs the load, then reads allResident to decide whether the next LOD level can be loaded in the same frame.