Screen

A blend operation that lightens areas that are darker than white.

Overview

1 - (1 - F)(1 - B)

Parameter Types

Parameter descriptions

Foreground: The foreground input, represented by F in the mathematical equation.
Background: The background input, represented by B in the mathematical equation.
Mix: The weight of the blend operation. The higher the value of Mix, the more apparent the effect of the blend operation. The default value is 1. Values outside of the range 0-1 produce an undefined effect outside of the node’s intended function.

Discussion

The Screen node inverts the color values of both the foreground and background and multiplies those values together. Then the node inverts the colors again, as represented by the equation: 1 - (1 - F)(1 - B). The resulting visual effect is always equally bright or brighter than the original textures. Below is an example of a simple node graph that uses the Screen node to blend two images together into a single material:

[Image]

Below are two images and their resulting blended texture applied to a cube: