whitePoint
The luminance level to use as the upper end of a tone mapping curve.
Declaration
var whitePoint: CGFloat { get set }Discussion
When using a High Dynamic Range (HDR) camera, SceneKit applies a process called tone mapping to translate the wide range of luminance values in the visible scene to the narrower range of brightness values that can be shown on a display. SceneKit determines a tone mapping curve from the minimumExposure, maximumExposure, exposureOffset, and whitePoint properties, along with a measure of scene luminance.
The default value is 1.0. By setting this property to a higher or lower value, you can produce more gradual or more abrupt transitions between shadows and highlights.