The range of brightness is [-1.0, 1.0], where 0.0 designates no
change; a value below 0.0 indicates a decrease in brightness; and a value above 0.0 indicates an increase of brightness.
The range for each component is [-1.0, 1.0] where 0.0 designates no change,
values below 0.0 mean a decrease in brightness, and values above indicate an increase.
The range for contrast is [-1.0, 1.0], where 0.0 designates no
change; a value below 0.0 indicates a decrease in contrast; and a value above 0.0 indicates an increase.
The range for each component is [-1.0, 1.0] where 0.0 designates no change,
values below 0.0 mean a decrease in contrast, and values above indicate an increase.
Inherited Members:
All known members inherited from class Clutter.OffscreenEffect