how do I make shader material scroll per pixel?

[fvzetea]

Godot Version

4.2.1

Question

Hi, I wanted to create something similar to liquid textures from classic doom games for my project , but i don’t know how to make my texture scroll per pixel

here’s some example of what I’m trying to achieve

and here’s how my shader script looks like now

thanks for any tips (and sorry for my english if there’s any mistakes)
!