Function Minneart__eval

tutorials/pathtracer/pathtracer_device.cpp:174–180

};

inline Vec3fa Minneart__eval(const Minneart* This,
                     const Vec3fa &wo, const DifferentialGeometry &dg, const Vec3fa &wi)
{
  const float cosThetaI = clamp(dot(wi,dg.Ns));
  const float backScatter = powf(clamp(dot(wo,wi)), This->b);
  return (backScatter * cosThetaI * float(one_over_pi)) * This->R;
}

inline Vec3fa Minneart__sample(const Minneart* This,
                       const Vec3fa &wo,