exposureOffset
A logarithmic bias that adjusts the results of SceneKit’s tone mapping operation, brightening or darkening the visible scene.
Declaration
var exposureOffset: 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.
Use this property to bias the tone mapping curve. The default exposure offset is zero, specifying no bias. Positive values result in a brighter scene, and negative values result in a darker scene.