A key for the color space to use for images before they are rendered to the context.
- iOS 5.0+
- macOS 10.4+
- tvOS 9.0+
- Core Image
By default, Core Image uses the GenericRGB color space, which leaves color matching to the system. You can specify a different output color space by providing a Quartz 2D
CGColor object. (See Quartz 2D Programming Guide for information on creating and using
To request that Core Image perform no color management, specify the
NSNull object as the value for this key. Use this option for images that don’t contain color data (such as elevation maps, normal vector maps, and sampled function tables).