vignettingPower
The amount of the rendered scene to darken with a vignette effect.
Declaration
var vignettingPower: CGFloat { get set }Discussion
A vignette effect darkens the edges and corners of the rendered scene, simulating the effect of lens and barrel shape on the image produced by a physical camera. Higher values result apply the darkening effect to a broader area around the edges of the rendered image, and lower values apply the effect to a smaller area, leaving more of the rendered image at full brightness. The default value of 0.0 results in no vignetting effect.
This property controls the area of the rendered image to be darkened; the vignettingIntensity property controls the level of darkening applied to those areas.
To enable this behavior, you must first enable the wantsHDR setting.