The byte stride and per-field map for a single layer of a source.
Sources publish a LayerLayout per available layer in their metadata.
Callers pass a layout (along with a gaussian count) to a ChunkDataPool's
acquire to receive a properly-sized ChunkData.
The byte stride and per-field map for a single layer of a source.
Sources publish a
LayerLayoutper available layer in their metadata. Callers pass a layout (along with a gaussian count) to aChunkDataPool'sacquireto receive a properly-sizedChunkData.