thx so much! I'm having trouble getting this working, pretty rusty with vertex shaders. if you wouldn't elaborating a little more on the setup from a few questions?
1. did u have the shader in the surface material override of a MeshInstance3D?
2. did u mean 1x8 subdivisions on a quad that's horizontal?
3. I'm on Godot 4.2, do u think the version might matter? there's no errors