Gradient Mapper - Unreal Engine Material Function

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The color mapper samples a grayscale value and simply maps colors to it, pretty much like the gradient map node in Substance Designer.

Here is an example:

Here is what a material can look like (in this case the material function has been used twice, once for the curvature map, once for the dirt map)

The material functions is entirely modular so that it can be used more than once in the same shader if necessary.

The material function can be added to your unreal shader by:

1. Dragging it in from the content browser
2. Right-clicking on the material graph and typing "mf_gradient mapper".