Imitates the effect seen when wrapping a 2D image across a barrel with a bulge in the centre. The corners of the screen are pulled in towards the centre more than the edges.

Parameters

• Strength - How strongly to distort the screen. Values above 0 cause CRT screen-like distortion. Values below 0 bulge the screen outwards.
• Smoothing - Amount of smoothing applied to the edges of the distorted screen.
• Background Color - Color to use for the outer edge of the screen.