Fresnel

This page provides information on the V-Ray Fresnel Texture.

Overview

Fresnel is a simple texture map that allows you to blend two colors or maps based on the angle of view and an index of refraction. For example, you can connect the Fresnel texture to the specular color of a normal material in order to create a Fresnel reflection.

UI Paths

||V-Ray Asset Editor|| > Textures (right-click) > Fresnel

||V-Ray Asset Editor|| > Create Asset (left-click) > Textures > Fresnel

Parameters

Perpendicular – Specifies the color for the texture when viewed at a grazing angle. If a texture is selected, it overrides the color as long as the texture checkbox is enabled.

Parallel – Specifies the color for the texture when viewed frontally. If a texture is selected, it overrides the color as long as the texture checkbox is enabled.

IOR – Specifies the index of refraction to use when calculating the Fresnel term.

Multipliers

Mode – Specifies the multiplication mode of the colors.

Multiplier – The color used for blending is black.
Blend Amount – The color used for blending is the one specified in the color slot.

Perpendicular – Blends between a color and a texture, if specified.

Parallel – Blends between a color and a texture, if specified.