CGGammaValue
A value used to map a color generated in software to a color supported by the display hardware.
Declaration
typealias CGGammaValue = FloatDiscussion
In macOS, the Display panel in System Preferences is used to set the default gamma for a display. Quartz also allows an application to provide its own custom gamma information, using functions such as CGSetDisplayTransferByTable(_:_:_:_:_:) and CGSetDisplayTransferByFormula(_:_:_:_:_:_:_:_:_:_:).
These functions take CGGammaValue arguments that specify:
A set of gamma table entries ranging from 0 to 1
The positive real coefficients in a gamma equation
See Also
Data Types
CGButtonCountCGCharCodeCGDirectDisplayIDCGDisplayBlendFractionCGDisplayConfigRefCGDisplayCountCGDisplayErrCGDisplayFadeIntervalCGDisplayFadeReservationTokenCGDisplayModeCGDisplayReconfigurationCallBackCGDisplayReservationIntervalCGDisplayStreamCGDisplayStreamFrameAvailableHandlerCGDisplayStreamUpdate