Adds an object to the filter chain.
- macOS 10.5+
- Core Image
The key that specifies the source object. For example, if the source is the output image of a filter, pass the
nilif the source object is used directly.
The object to which the source object links.
The key that specifies the target for the source. For example, if you are connecting the source to the input image of a
CIFilterobject, you would pass the