Computer graphics gets boring if everything becomes too regular. So it’s good to introduce a little randomness, to mix things up a bit and make the image look more natural.
But it should be controlled randomness, much in the way the arrangement of the bristles in a paintbrush allow an artist to add controlled randomness into a painting, while still maintaining aesthetic control.
To do this we can use procedural noise. Noise can be used in all sorts of ways. In lesson 16 we are using it in a very basic way: to create a simple texture that doesn’t look too regular.
You can see this lesson by CLICKING HERE.