Type Property 型プロパティ

opaque

An option that causes the filter to ensure the result is completely opaque.

Declaration 宣言 

static var opaque: GraphicsContext.BlurOptions { get }

Discussion 議論

The filter ensure opacity by dividing each pixel by its alpha value. The result may be undefined if the input to the filter isn’t also completely opaque.

See Also 参照

Getting Blur Options

static var dithersResult: GraphicsContext.BlurOptions
An option that causes the filter to dither the result, to reduce banding.