Blending - supyrb/ConfigurableShaders GitHub Wiki

Blending defines how the source (color input) and the destination (the current value in the color buffer) should be combined. Think of it as photoshop layers, but with less/strange blend modes. You can find a breakdown of different modes on the wiki page Blend Modes

UI Shader File

Usage

Shader "ConfigurableShaders/UI Blending"
{
	Properties
	{
		...

		[Enum(UnityEngine.Rendering.BlendMode)] _BlendSrc ("Blend mode Source", Int) = 5
		[Enum(UnityEngine.Rendering.BlendMode)] _BlendDst ("Blend mode Destination", Int) = 10
	}

	SubShader
	{
		Pass
		{
			Tags
			{ "Queue"="Transparent" "RenderType"="Transparent"}
			Blend [_BlendSrc] [_BlendDst]

			...
		}
	}
}

References

Blend Mode

Manual
Enum

public enum BlendMode
{
	Zero = 0,
	One = 1,
	DstColor = 2,
	SrcColor = 3,
	OneMinusDstColor = 4,
	SrcAlpha = 5,
	OneMinusSrcColor = 6,
	DstAlpha = 7,
	OneMinusDstAlpha = 8,
	SrcAlphaSaturate = 9,
	OneMinusSrcAlpha = 10
}

Blend Operation

(Mostly DX11.1 only)
Right now this is just as a reference in here and not used, since it seems to be quite graphics driver specific.
Manual
Enum

public enum BlendOp
{
	Add = 0,
	Subtract = 1,
	ReverseSubtract = 2,
	Min = 3,
	Max = 4,
	LogicalClear = 5,
	LogicalSet = 6,
	LogicalCopy = 7,
	LogicalCopyInverted = 8,
	LogicalNoop = 9,
	LogicalInvert = 10,
	LogicalAnd = 11,
	LogicalNand = 12,
	LogicalOr = 13,
	LogicalNor = 14,
	LogicalXor = 15,
	LogicalEquivalence = 16,
	LogicalAndReverse = 17,
	LogicalAndInverted = 18,
	LogicalOrReverse = 19,
	LogicalOrInverted = 20,
	Multiply = 21,
	Screen = 22,
	Overlay = 23,
	Darken = 24,
	Lighten = 25,
	ColorDodge = 26,
	ColorBurn = 27,
	HardLight = 28,
	SoftLight = 29,
	Difference = 30,
	Exclusion = 31,
	HSLHue = 32,
	HSLSaturation = 33,
	HSLColor = 34,
	HSLLuminosity = 35
}