warp.volume\_lookup =================== .. function:: warp._src.lang.volume_lookup(id: uint64, i: int32, j: int32, k: int32, dtype: Any) -> Any .. hlist:: :columns: 8 * Kernel Query the value of voxel with coordinates ``i``, ``j``, ``k`` for a volume of type ``dtype``. If the voxel at this index does not exist, this function returns the background value.