Creating Materials properly
As we mentioned previously, everything happens inside the Material Graph. The Material Graph is constructed by creating nodes or Expressions and connecting them to the input pins on the Main Material Node. The data flows from left to right in the Graph, and the Main Material Node acts as the endpoint for every Material network since it contains the final input pins that determine the compiled information for the Material . Material Expressions in the Graph only affect the Material if they are part of a chain connected to the Main Material Node. By plugging Expressions such as constants, parameters, and textures into these inputs, you can define the surface properties of your Material and create a wide range of physical surfaces. Once you’ve done this, you have to understand what Expressions are and how to create them.
Defining Expressions
Material Expressions serve as the fundamental components for creating fully functional Materials within...