Graphics Programs Reference
In-Depth Information
shader behaving as a shadeless material you have in the Blender Intern-
al engine, go to Chapter 9,
Special Materials
, of this cookbook.
• From step 6 to step 9, we built the basic shader for the alien
Suzanne
skin. The diffuse component is mixed, on the ground of the
Facing
output
of a
Layer Weight
node, with a specular component made up of two
summed
Glossy
nodes with different
Roughness
values, so as to have
a crisper specular effect on a more diffuse one.
• From step 10 to step 30, we built the quite complex bump pattern for the
skin. Note that there are two separate bump effects, one for the diffuse
component and the same one, summed with the bare
Voronoi
texture,
connected to the specular component nodes.
• Finally, from step 31 to step 35, we built a very simple color pattern.
There's more...
The reality of this material would benefit a lot from at least a little Sub Surface Scat-
tering effect. In the 2.66a official Blender version, there is no
SSS
shader in Cycles
yet (even if not totally developed, it will be present in the official 2.67 release coming
out soon), but we'll see different ways to "fake" it in Chapter 8,
Human Skin Materials
and Faking Sub Surface Scattering in Cycles
, of this cookbook.