Creating Natural Materials in Cycles - Blender Cycles Materials and Textures - page 111

Now we need to expose some of the values to modify the material from the interface, so let's
perform the following steps:

1. From the second Value socket of the Bump_Strength node inside the SAND BUMP

frame, click and drag a link to the bottom free socket in the Group Input node. In the
Input window under the Properties panel, double-click on the newly appeared input
socket name, Value, and write Sand_strength .

All the Vector input sockets of the nodes are connected to a single socket on the Group Input node, and the Bump
Strength value is exposed by a new connection

2. Repeat step 1 for the second Value socket of the Waves_Strength and the

Grain_Strength nodes, and rename the respective input as Waves_strength
and Granularity .

3. Now click on the Waves_size node inside the BIG WAVES frame and delete it. Click

and drag the second Value socket of the Multiply01 node to the Group Input node,
and rename the new socket Waves_size . Click and drag a link from the second
Value socket of the Multiply02 node, and connect it to the Waves_size socket
as well.