k3d/share/shaders/k3d_fur2.sl:81:    float T_Dot_nL = 0;
k3d/share/shaders/k3d_fur2.sl:118:	T_Dot_nL = T.nL;
k3d/share/shaders/k3d_fur2.sl:120:	Alpha = acos(T_Dot_nL);
k3d/share/shaders/k3d_fur2.sl:123:	Kajiya = T_Dot_nL * T_Dot_e + sin(Alpha) * sin(Beta);
