mode
The mode of the mapping operation to perform.
Declaration
var mode: MTLSparseTextureMappingModeDiscussion
When mode is MTLSparseTextureMappingMode.map, Metal walks the tiles in the range in buffer offset order, assigning the next tile from the heap in increasing order, starting at heapOffset.
When mode is MTLSparseTextureMappingMode.unmap, Metal unmaps the tiles in the range, and ignores the value of member heapOffset.