Graphics Reference
In-Depth Information
21. Add an RGB Curves node (press
Shift
+
A
and navigate to Color | RGB Curves) and
paste it between the Add-MixRGB and the Diffuse BSDF nodes. Connect its output
to the Color input socket of the Glossy BSDF shader node.
22. Click on the RGB Curves node's little window to create a new point. Set its position
values to
0.24545
for X and
0.38125
for Y. Then create another point and set the
position values to
0.74545
for X and
0.51875
for Y, as shown in the
following screenshot:
Screenshot of the COLOR frame connected to the Diffuse and Glossy shaders
How it works...
Even if this material looks a bit complex at first sight, you must note that we just mixed four
procedural noise textures with different settings and iterations to build the bump effect and
create the color pattern to some extent:
F
In the first stage, from steps 2 to 15, we built the bump pattern by mixing the output
of the noise textures (the Overlay, Darken, Mix01, and Mix02 nodes converging to
the input socket of the Bump node) through MixRGB nodes, and in some cases also
edited their levels using the ColorRamp nodes to obtain a more random, natural
look (ColorRamp1 and ColorRamp2, all the nodes inside the BUMP frame).
F
In the second stage, from steps 18 to 22, we built the color pattern by mixing a
simple color output with the output of some of the Noise Texture nodes, and then
edited the result using an RGB Curves node (nodes inside the COLOR frame).
