Warp/bend the UI

Hi, I have a thread open over at the UI section of the forums but was directed here as it might be doable with a shader.

Thanks in advance for any tips or clues you might be able to give me.

The thread:

 

Hey!

Have you tried if UIVertices can do the trick?
http://docs.unity3d.com/ScriptReference/UIVertex.html

 

I have yes, but that didn't give me the result I desire. As a Button element only has 8 vertices it looked really choppy.
I'm not sure if adding more vertices would work, haven't attempted that yet.

 

I don't see how you could have a button smoothly bended with only 8 vertices.

 

Which is why I wanted to do it with a shader that warps the camera view or something along those lines.
Anyway, I'm at home now so I'll see if using more vertices would work.