Effects Reference: Dithering

Alpha Dithering (Texture Bias)

Applies alpha dithering to the surface using a user-provided texture pattern.
The pattern is sampled in screen space and remapped between the specified minimum and maximum offsets to bias the alpha cutoff.

Property	Range	Description
MainTex	🖼️	The base texture used for the surface.
MainColor	🎨	A color multiplier applied to the main texture.
Alpha	[0, 1]	Global alpha multiplier applied before dithering.
Cutoff	[0, 1]	The alpha threshold used for dithering-based cutoff.
DitherPatternTex	🖼️	The texture used as the dithering pattern. Its brightness controls the dithering bias.
DitherPatternTiling	–	Controls the tiling of the dithering pattern across screen space.
DitherAmountMin	[-1, 1]	Minimum bias applied to the alpha value based on the pattern sample.
DitherAmountMax	[-1, 1]	Maximum bias applied to the alpha value based on the pattern sample.
PixelSize	(0, ∞)	Controls the scale used when sampling in screen space to compute the dithering bias.

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Alpha Dithering (Matrix Bias)

Applies alpha dithering using a built-in ordered Bayer matrix.
The fragment’s screen-space position determines which matrix cell contributes the dithering bias.

Property	Range	Description
MainTex	🖼️	The base texture used for the surface.
MainColor	🎨	A color multiplier applied to the main texture.
Alpha	[0, 1]	Global alpha multiplier applied before dithering.
Cutoff	[0, 1]	The alpha threshold used for dithering-based cutoff.
DitherAmountMin	[-1, 1]	Minimum bias applied to the alpha value based on the matrix cell.
DitherAmountMax	[-1, 1]	Maximum bias applied to the alpha value based on the matrix cell.
PixelSize	(0, ∞)	Controls the screen-space scaling used when indexing into the matrix.

This produces stable, grid-aligned dithering, ideal for stylized transparency, classical ordered-dither effects, or predictable fadeouts.