This page provides information on the VRayFresnel node.
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UI Path: ||Toolbar|| > V-Ray menu icon > Textures > VRayFresnel
front – Connection pipe to a texture to control the Front Color parameter.
side – Connection pipe to a texture to control the Side Color parameter.
Front Color – The color for the texture when viewed frontally.
Side Color – The color for the texture when viewed at a grazing angle.
IOR – Index of refraction to use when calculating the Fresnel term.