Returns the Vector3 that points in the direction of refraction. For use within the visual shader graph.
refract(I, N, eta) in the shader language, where
I is the incident vector,
N is the normal vector and
eta is the ratio of the indices of the refraction.
© 2014–2020 Juan Linietsky, Ariel Manzur, Godot Engine contributors
Licensed under the MIT License.