Different ways of representing alpha.
SDKs
- iOS 11.0+
- macOS 10.13+
- Mac Catalyst 13.0+
- tvOS 11.0+
Framework
- Core Image
Declaration
enum CIRenderDestinationAlphaMode : UInt
EnumerationCIRender
CIRender
Topics
Enumeration Cases
case noneDesignates a destination with no alpha compositing.
case premultipliedDesignates a destination that expects premultiplied alpha values.
case unpremultipliedDesignates a destination that expects non-premultiplied alpha values.
See Also
Customizing Rendering
var alphaThe render destination's representation of alpha (transparency) values.
var blendThe destination's blend kernel.
var blendsIndicator of whether to blend in the destination's color space.
var colorThe destination's color space.
var width: IntThe render destination's row width.
var height: IntThe render destination's buffer height.
var isIndicator of whether or not the destination clamps.
var isIndicator of whether or not the destination dithers.
var isIndicator of whether the destination is flipped.