Tweet
/*
*
* Wavelength dependent subsurface scattering OSL material by Derek Flood (c)2016
* Based on the hypershade tree by Tony Reynolds
* from http://docs.sharktacos.com/misc.php?action=help&hid=66
*
*/
surface DFskinMtl
[[ string description = "blended skin material" ]]
(
/* Global Section */
float Depth_Scale = 1,
float Overall_Brightness = 1,
/* SSS Section */
string Subsurface_Color = "color.png",
float Subsurface_Amount = 1,
string RGB_Scatter_Depth = "RGB.png",
float Texture_Gamma = 1.0,
output color result = 1
)
{
/* declare variables and read texture map */
//color Depth = getTextureDif(RGB_Scatter_Depth, color(0.8,0.2,0.1));
color Depth = texture(RGB_Scatter_Depth, u, v);
Depth = clamp(Depth,0.001,1); // Prevent depth values from being zero which breaks the shader RGB mix
//color SubColor = getTextureDif(Subsurface_Color, color(0.85,0.75,0.65));
color SubColor = texture(Subsurface_Color, u, v);
SubColor = pow(SubColor, Texture_Gamma); //gamma correct texture
SubColor *= Overall_Brightness;
color SubR = SubColor * color(1,0,0);
color SubG = SubColor * color(0,1,0);
color SubB = SubColor * color(0,0,1);
float IOR = 1.38;
float PhaseFunction = 0.8;
int Subdivs = 8;
/* Closures */
closure color SkinR = vray_subsurface (
IOR, PhaseFunction,
SubR * Depth[0] * Depth_Scale,
SubR * Subsurface_Amount,
"subdivs", Subdivs);
closure color SkinGB = vray_subsurface (
IOR, PhaseFunction,
((SubG * Depth[1]) +
(SubB * Depth[2])) *
Depth_Scale,
(SubG + SubB) * Subsurface_Amount,
"subdivs", Subdivs);
Ci = (SkinR + SkinGB);
}
Comment