Shader Add ons
Besides the base shading model to define light/shadow areas, we have a system to add extra functionality to shader that we call "shader add-ons”. We have the base shader (Assets/Shaders/Toon.shadergraph) and, on top of that, we add additional effects in the form of these add-ons.
To drive this, we make big use of Subgraphs in Shader Graph. Shader add-ons are modules that can be added - potentially with other add-ons - to the base shading model (which, by the way, is also encapsulated in a Subgraph found at Assets/Shaders/Subgraphs/ToonLighting.subgraph).
This allows us to have shaders for:
- Toon
- Toon + Wind
- Toon + Wind + Masking + Tinting
- Toon + Dissolve
... and so on.
To better understand this organisation, see the diagram below and check out the shader Assets/Shaders/Toon_Wind.shadergraph in the project:
