The Metal device responsible for the layer’s drawable resources.
- iOS 8.0+
- macOS 10.11+
- Mac Catalyst 13.0+
- tvOS 9.0+
- Core Animation
This property determines which device object Metal uses to create its
MTLTexture objects. When you retrieve a drawable object and its associated texture, you must render to the texture using the same device object.
The default value is
nil—you must set the device for a layer before rendering.