Vray Materials -

[ F_conductor = \frac(n^2 + k^2) - 2n\cos\theta + \cos^2\theta(n^2 + k^2) + 2n\cos\theta + \cos^2\theta ]

[ f_oren = \frac\rho\pi \left( A + B \cdot \cos(\phi_i - \phi_o) \cdot \sin(\alpha) \cdot \tan(\beta) \right) ] vray materials

Novel contribution: V-Ray 5+ introduced a that allows artists to bypass IOR physics by directly encoding reflectivity per angle, though this breaks energy conservation unless carefully managed. [ F_conductor = \frac(n^2 + k^2) - 2n\cos\theta