> For the complete documentation index, see [llms.txt](https://docs.shadersource.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.shadersource.io/assets-and-plugins/waterfall-tool-2/how-to-use/materials-reference.md).

# Materials Reference

### UVs

UVs are calculated during the mesh generation action and added to the dynamic meshes. They are also baked into the static mesh when performing a static mesh bake.

* UV0: 0:1 UVs
* UV1: In centimetres
* UV2: X = Speed, Y = Flow
* UV3: X = Random Seed, Y = Local Position