Reflection Declarations, BxDFType, FourierBSDFTable, BSDF, BxDF(->), ScaledBxDF, SpecularReflection, SpecularTransmission, FresnelSpecular, LambertianReflection, LambertianTransmission, OrenNayar, MicrofacetReflection, MicrofacetTransmission, FresnelBlend, FourierBSDF, Fresnel(->), FresnelConductor, FresnelDielectric, FresnelNoOp