Applies the configuration specified in the renderer context to the Core Graphics context.
- iOS 10.0+
- Mac Catalyst 13.0+
- tvOS 10.0+
The Core Graphics context that the graphics renderer performs drawing actions on.
The graphics renderer calls this method when the
run method is invoked. Override this method in a subclass to configure the underlying Core Graphics context before the renderer begins renderering.
Core Graphics contexts are reused for repeated calls to the
run method. Therefore, be sure to clean up the context to make it ready for reuse.