Unity - Shader Graph - Channel Mixer [closed]

how about the API => it apparently uses DOT product

Generated Code Example

The following example code represents one possible outcome of this node.

_ChannelMixer_Red = float3 (OutRedInRed, OutRedInGreen, OutRedInBlue);
_ChannelMixer_Green = float3 (OutGreenInRed, OutGreenInGreen, OutGreenInBlue);
_ChannelMixer_Blue = float3 (OutBlueInRed, OutBlueInGreen, OutBlueInBlue);

void Unity_ChannelMixer_float(float3 In, float3 _ChannelMixer_Red, float3 _ChannelMixer_Green, float3 _ChannelMixer_Blue, out float3 Out)
{
   Out = float3(dot(In, _ChannelMixer_Red), dot(In, _ChannelMixer_Green), dot(In, _ChannelMixer_Blue));
}

And it makes sense, you basically configure how much of the original channels IN should influence each individual of the resulting channels OUT.

As said above it is indeed a Dot product - which in other words basically means "How aligned is the IN color as a vector with each of the OUT channel mixes as a vector