init(screenSize:label:)
A convenience initializer that creates a rate map descriptor with a given size and identifier.
Declaration
convenience init(screenSize: MTLSize, label: String? = nil)Parameters
- screenSize:
The logical size, in pixels, of the viewport coordinate system.
- label:
A string that identifies the resulting rate map.
Return Value
A descriptor object whose screenSize and label properties are set to the provided values. You need to add at least one layer rate map to the descriptor.