pub type VipsForeignDzDepth = c_uint;Expand description
VipsForeignDzDepth: @VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL: create layers down to 1x1 pixel @VIPS_FOREIGN_DZ_DEPTH_ONETILE: create layers down to 1x1 tile @VIPS_FOREIGN_DZ_DEPTH_ONE: only create a single layer
How many pyramid layers to create.