Radeon ProRender



Fresnel term, used for weighting blend between diffuse and specular BRDFs, or more generally, outputs the Fresnel falloff on edges facing away from the camera on geometry.


Input Name Type and Range Brief Explanation
RPR_MATERIAL_INPUT_INVEC invec Vector Direction (usually view direction).
RPR_MATERIAL_INPUT_NORMAL normal Vector Surface normal direction.
RPR_MATERIAL_INPUT_IOR ior Float Index of refraction, controls falloff towards edges.
RPR_MATERIAL_INPUT_SCHLICK_APPROXIMATION schlickapprox Float Schlick factor.