Graphics Programs Reference
In-Depth Information
put of the
Image Texture
node to the
Fac
input socket of the
Color-
Ramp_darken
node and the
Color
output of the latter to the
Fac
input
socket of the
scales_dark
mix node. Move both the black and white
colored markers to one-fourth of the slider length from the left (very close
together).
28. Add a
Mix
node (press
Shift
+
A
and go to
Color
|
Mix
), rename it as
scales_dark_amount
and paste it to the right of the
scales_dark
mix
node. Set the
Fac
value to
0.150
and connect the
Color
output of the
scales_pattern
mix node to the
Color2
input socket.
How it works...
This is how the preceding steps work to create a snake-like scaly material:
• From step 3 to step 6, we built the ground for the shader by mixing, as
usual, a diffuse and a glossy node, factored by the output of a
Fresnel
node.
• From step 7 onwards, we started building the scales bump pattern by us-
ing a tile-able image map. And from step 11 onwards, we refined the de-
tails in the scales pattern by adding the outputs of some procedural tex-
tures. With step 18, the bump pattern is complete.
• From step 19 to step 28, we build the color pattern by mixing the values
of the image texture in a noise procedural to add uneven dark coloration
to the scales and by using the scales' image edges as a stencil for the
connective_color
node.
