I have followed a PolyToots tutorial (https://www.youtube.com/watch?v=3T8cKTQrMxk) to make a 'rug deform' effect.

This is great except for that the vertices aren't deforming faithfully enough to complex meshes.

Here is what I mean.

The FlowerPot mesh is on a layer called 'Deformers' which a RenderTexture camera is looking at. Then a shadergraph says to deform the Rug mesh based on the RenderTexture output.

This is the shadergraph:

As you can see, the rug is deforming based on the flowerpot's shape but not in an accurate enough way. Is there a way to make the deformation more accurate?