refract

Description

Refract incident vector given surface normal and index of refraction.

Signature

vector<T, N> refract<T, int N>(
    vector<T, N> i,
    vector<T, N> n,
    T eta)
    where T : __BuiltinFloatingPointType;

T refract<T>(
    T i,
    T n,
    T eta)
    where T : __BuiltinFloatingPointType;

Generic Parameters

T: __BuiltinFloatingPointType

N : int

Parameters

i : vector<T, N>

The incident vector.

n : vector<T, N>

The normal vector.

eta : T

The relative refractive index.

i : T

The incident vector.

n : T

The normal vector.

Availability and Requirements

Defined for the following targets:

hlsl

Available in all stages.

glsl

Available in all stages.

cpp

Available in all stages.

cuda

Available in all stages.

metal

Available in all stages.

wgsl

Available in all stages.

spirv

Available in all stages.

llvm

Available in all stages.