Dielectric Specular Node

Description

Returns a Dielectric Specular F0 value for a physically based material. The material to use can be selected with the Material dropdown parameter on the Node.

A Common Material type defines a range between 0.034 and 0.048 sRGB values. The value between this range can be selected with the Range parameter. This Material type should be used for various materials such as plastics and fabrics.

You can use Custom material type to define your own physically based material value. The output value in this case is defined by its index of refraction. This can be set by the parameter IOR.

Ports

Name	Direction	Type	Binding	Description
Out	Output	Vector 1	None	Output value

Controls

Name	Type	Options	Description
Material	Dropdown	Common, RustedMetal, Water, Ice, Glass, Custom	Selects the material value to output.
Range	Slider		Controls output value for Common material type.
IOR	Slider		Controls index of refraction for Custom material type.

Generated Code Example

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

Common

float _DielectricSpecular_Range = 0.5;
float _DielectricSpecular_Out = lerp(0.034, 0.048, _DielectricSpecular_Range);

RustedMetal

float _DielectricSpecular_Out = 0.030;

Water

float _DielectricSpecular_Out = 0.020;

Ice

float _DielectricSpecular_Out = 0.018;

Glass

float _DielectricSpecular_Out = 0.040;

Custom

float _DielectricSpecular_IOR = 1;
float _DielectricSpecular_Out = pow(_Node_IOR - 1, 2) / pow(_DielectricSpecular_IOR + 1, 2);