Surface Tangent
What is it about?
This page refers to the Surface Tangent node of the Redshift renderer in Cinema 4D. It outputs the surface tangent direction — useful for controlling anisotropic highlights or building custom vector-based shading setups.
Overview
The Surface Tangent node has one purpose, to control the direction of anisotropic reflections when connected to an OpenPBR material. The OpenPBR material accepts a Surface Tangent in the Anisotropy Tangent ports for both Specular reflection and Coat reflections.
Example Graph
Connect a Surface Tangent to the Anisotropy Tangent in the Specular or Coat inputs of an OpenPBR material.
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