RPR_MATERIAL_NODE_MICROFACET_ANISOTROPIC_REFLECTION

Usage

Microfacet reflectance with anisotropic rotation. This allows surfaces like brushed metal. The direction of anisotropy is dictated by the rotation, and effects the microfacet distribution.

Parameters

Input	Name	Type and Range	Brief Explanation
RPR_MATERIAL_INPUT_COLOR	color	Color	Reflection color.
RPR_MATERIAL_INPUT_NORMAL	normal	Vector	Normal direction used for shading.
RPR_MATERIAL_INPUT_IOR	ior	Float	Index of refraction, usually 1-5.
RPR_MATERIAL_INPUT_ROUGHNESS	roughness	Float 0-1	Reflection roughness.
RPR_MATERIAL_INPUT_ANISOTROPIC	anisotropic	Float -1 to 1	Anisotropy amount, forwards or backwards.
RPR_MATERIAL_INPUT_ROTATION	rotation	Float in radian	Rotation of anisotropy around UV direction.