UV position to world position

Hello,

What is the best way to convert a UV / Texture position to a world (or local) position in Unity?

 

What exactly are you attempting to do, because the answer is somewhere between the three options if "it's impossible", "first you need to pass the entire mesh vertex, triangle, and UV data to the shader so that the fragment shader can raytrace the position", and "you don't need to, you already know the world position".