Resources for using a custom Material2d?

[Devon7925]

I'm trying to create a 2d game where the sprites have a color texture and a normal map texture for lighting. The shader_material.rs example can be relatively easily converted to 2d, however the custom_material.wgsl is erroring because the uv variable isn't provided for Material2d but is for Material as far as I can tell. What is the easiest way to fix this, and are there any good learning resources for creating custom Material2ds in general?