Question Need guidance for a 2.5D water shader.

Hello friends, I'm working on a water shader in URP within shader graph, but I'm totally lost. The problem is, that I want to make a water shader that has the volume of a cube like this screenshot:




Wen I put my own water shader on a cube, it obviously still looks like a water shader on a plane. So my question is how you would go around making a water shader that works on all faces of the cube.

I can't really find any helpfull sources / explanations online on how it's done. Has anyone here made something like this? Thanks in advance!