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Blend | Substance 3D Designer

Blend node icon

In: Atomic nodes

Description

The Blend node blends or mix together two separate inputs with a user-defined Blend Mode and an optional Opacity mask. It is the most useful node of all Atomic nodes, almost any Graph you build in Substance 3D Designer will make use of this node.

Its functionality is similar to having two layers above one another in Substance 3D Painter or Photoshop, that blend together by the blending mode you set on the top layer.


Input connectors

Foreground Grayscale/Color
Top or foreground layer of the Blend operation.

Background Grayscale/Color
Bottom or background layer of the blend operation.

Opacity Grayscale
Optional Alpha mask input.

Caution:

Blend nodes have dynamic inputs that switch between Grayscale and Color depending on your connections. A Blend Node can only blend two inputs of the same type. Connecting a Color and Grayscale input to the Foreground and Background will result in a dashed red connection line, signifying a calculation error. This is the number one reason new users run into problems with Color vs Grayscale connections: make sure both connections are of the same type!


Parameters

Opacity Float
Opacity of the Foreground layer blending into the Background. It works independent to the Opacity input and acts as an additional multiplier to it.

Blending Mode Integer (Static)
Sets the blending operation to be used. See Usage guide below.

Alpha Blending Integer (Static)
Determines blending behavior when color inputs have Alpha channels:
- Use Source Alpha
- Ignore Alpha
- Straight Alpha Blending
- Premultiplied Alpha Blending

Cropping Area Float4 (Static)
Allow for setting a custom cropping region that behaves like an additional Opacity mask. Any area cropped shows only the background.


Usage Guide

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