Double +glut

DoubleBuffered :: DisplayMode
GLUT Graphics.UI.GLUT.Initialization
Select a double buffered window. This overrides SingleBuffered if it is also specified.
doubleBuffered :: GettableStateVar Bool
GLUT Graphics.UI.GLUT.State
Contains True when the current layer of the current window is double buffered, False otherwise.
DisplayDouble :: DisplayCapability
GLUT Graphics.UI.GLUT.Initialization
Boolean indicating if the color buffer is double buffered. Default is "IsEqualTo 1".