k3d/share/shaders/k3d_watercolor.sl:14:	float nSnell = 1.34;

k3d/share/shaders/k3d_watercolor.sl:24:	float sinthetat = sin(thetai)/nSnell;

k3d/share/shaders/k3d_watercolor.sl:28:		reflectivity = (nSnell - 1)/(nSnell + 1);

