UnityGame/Library/PackageCache/com.unity.shadergraph/Documentation~/Cornea-Refraction-Node.md

Cornea Refraction Node

This node performs the refraction of the view ray in object space and returns the object space position that results. This is used to simulate the refraction that can be seen when looking at an eye.

Render pipeline compatibility

Node	Universal Render Pipeline (URP)	High Definition Render Pipeline (HDRP)
Cornea Refraction Node	No	Yes

Ports

name	Direction	type	description
Position OS	Input	Vector3	Position of the fragment to shade in object space.
View Direction OS	Input	Vector3	Direction of the incident ray in object space. Either from the camera in rasterization or from the previous bounce in ray tracing.
Cornea Normal OS	Input	Vector3	The normal of the eye surface in object space.
Cornea IOR	Input	float	The index of refraction of the eye (1.333 by default).
Iris Plane Offset	Input	float	Distance between the end of the cornea and the iris plane. For the default model, this value should be 0.02
RefractedPositionOS	Output	Vector3	Position of the refracted point on the iris plane in object space.