Added PixelArtAddDitherPattern node.

[tsone]

Didn't hear from you right away so I implemented dithering as well, however through a new PixelArtAddDitherPattern node:

The node adds dither pattern to the image RGB values, so any color quantizer after the node achieves a dither look. It's modular and flexible, for example one could use the built-in Quantize node for dithering. The node also adds support for custom dither patterns (via input mask), and the classic 45-degree halftone pattern.

Here's manga'esque halftoning look using built-in Quantize node:

The amount option is a multiplier for the effect. Generally amount = 1 / num_colors is a good starting point.

Bayer pattern example:

Blue noise (custom pattern):

Game Boy Camera'esque look:

(Blue noise mask image:)

(Workflows included in the images.)

[dimtoneff]

Thanx :) it looks amazing! I will check it out and merge