Cycles / OSL:

* Added Westin Sheen and Westin Backscatter closures for testing, useful for Cloth like effects. 

Only available via OSL, added an example OSL shader to the Templates (Text Editor).

release/scripts/templates_osl/westin_closure.osl

@@ -0,0 +1,12 @@
+
+shader node_westin_bsdf(
+	color Color = 0.8,
+	float Roughness = 0.5,
+	float Edginess = 0.2,
+	normal Normal = N,
+	output closure color Sheen = 0,
+	output closure color Backscatter = 0)
+{
+	Sheen = Color * westin_sheen(Normal, Roughness);
+	Backscatter = Color * westin_backscatter(Normal, Edginess);
+}