Normal Blend Node

Description

Blends two normal maps defined by inputs A and B together, normalizing the result to create a valid normal map.

Ports

Name	Direction	Type	Binding	Description
A	Input	Vector 3	None	First input value
B	Input	Vector 3	None	Second input value
Out	Output	Vector 3	None	Output value

Controls

Name	Type	Options	Description
Mode	Dropdown	Default, Reoriented	Selects the the method used for blending.

Generated Code Example

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

Default

void Unity_NormalBlend_float(float3 A, float3 B, out float3 Out)
{
    Out = normalize(float3(A.rg + B.rg, A.b * B.b));
}

Reoriented

void Unity_NormalBlend_Reoriented_float(float3 A, float3 B, out float3 Out)
{
    float3 t = A.xyz + float3(0.0, 0.0, 1.0);
    float3 u = B.xyz * float3(-1.0, -1.0, 1.0);
    Out = (t / t.z) * dot(t, u) - u;
}