Output Bindings

Outputs declares named values and binds them to material or function outputs.

Basic Binding

Outputs = {
    vec3 Color;
    Base.EmissiveColor = Color;
}

Color is a graph variable. Base.EmissiveColor = Color binds it to the Unreal material property.

Material Properties

Common material outputs include:

The exact supported list depends on plugin and Unreal version.

Expression Output Nodes

Material functions use declared outputs:

Outputs = {
    vec3 Result;
    float Mask;
}

The generator creates function output nodes and wires assigned Graph values into them.

Output Expressions

You can assign expressions directly:

Outputs = {
    vec3 Color;
    Base.EmissiveColor = Tint * Strength;
}

For readability, prefer named intermediate variables when expressions get large.

Reserved Name return

Use return to bind the primary material-function output when the declaration supports it:

Outputs = {
    vec3 Result;
    return = Result;
}

Do not use return as a normal variable name.