So How many people are aware of all the closures that CYCLES makes available?
For reference, lets just say I’m only talking about blender 3.5.x…
The documentation at docs.blender.org clearly state that, “The available closures in Cycles correspond to the shader nodes and their sockets”. Shortly after it lists the available closures as
"BSDF
diffuse(N)oren_nayar(N, roughness)diffuse_ramp(N, colors[8])phong_ramp(N, exponent, colors[8])diffuse_toon(N, size, smooth)glossy_toon(N, size, smooth)translucent(N)reflection(N)refraction(N, ior)transparent()microfacet_ggx(N, roughness)microfacet_ggx_aniso(N, T, ax, ay)microfacet_ggx_refraction(N, roughness, ior)microfacet_beckmann(N, roughness)microfacet_beckmann_aniso(N, T, ax, ay)microfacet_beckmann_refraction(N, roughness, ior)ashikhmin_shirley(N, T, ax, ay)ashikhmin_velvet(N, roughness)
Hair
hair_reflection(N, roughnessu, roughnessv, T, offset)hair_transmission(N, roughnessu, roughnessv, T, offset)principled_hair(N, absorption, roughness, radial_roughness, coat, offset, IOR)
BSSRDF
bssrdf_cubic(N, radius, texture_blur, sharpness)bssrdf_gaussian(N, radius, texture_blur)
Volume
henyey_greenstein(g)absorption()
Other
emission()ambient_occlusion()holdout()background()"
However, recently while I was looking through the source code it very quickly became clear that this is not true, there is at least a handful of undocumented closures!
My question is this, How many people know about this? am I just late to the party and this is old news? Its hard for me to imagine that I just uncovered such a shader-writers-goldmine as this… and yet a Google search for 'blender undocumented cycles osl closures" returns no relevant information…
