You can set expressions on shader parameters to procedurally set their values. Expressions are available for the following types of parameters:
- Bool, Integer and Float types
- Vectors of integer and float types
The expression text field is toggled using the “magic wand” icon () to the right of supported parameters. Once clicked, a green expression text field will appear, where the expression can be entered.
Expressions are implemented using SeExpr, which enable flexible artistic control, when required. The language comes with some built-in functions and, in addition, you can use the global values defined in the Globals panel (see above).