Linescreen (Composition by gtoledo3)
This is a glsl shader that takes texture input (vid, still image, etc.) and does some fun level dithering, and line screening.
The controls are as follows:
layers - controls amount of color steps.
mode: 0-BW, horizontal linescreen. 1-BW, vertical linescreen. 2-BW, grid linescreen. 3-Color, horizontal linescreen. 4-Color, vertical linescreen. 5-Color, grid linescreen.
line: density of linescreen.
red/green/blue: color levels when in one of the color modes.
vignette/vignette Radius: turn on vignette, and control radius.
gamma/gammaLevel: turn on gamma, control gamma level (gamma from an example by psonice).
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