A Visual Effect Graph Asset contains all of the necessary data, such as the graph and shadersA small script that contains the mathematical calculations and algorithms for calculating the Color of each pixel rendered, based on the lighting input and the Material configuration. More info
See in Glossary, that Unity requires to process an effect
This Asset only works when you install the Visual Effect Graph package. For information on how to install the Visual Effect Graph, see the packages documentation.
For information on how to use Visual Effect Graph Assets, see the Visual Effect Graph package documentation.