How to create 2D grass wind motion using shaders in Godot

I have just started learning Shaders, and it is very difficult in the beginning but after couple of days I finally start understanding it.

so I made this grass animation shader for 2D because most of the video I found is for 3D. making grass wind motion is very simple and easy to make. it is just a single line in the VERTEX function.
I have also cover basics as well, so if you have no experience in shaders then also you can understand it too.

Here is the Shaders code:

shader_type canvas_item; uniform float speed = 2.0; uniform float dis = 20.0; void vertex(){ VERTEX.x += sin(TIME * speed) * dis * (UV.y-1.0); }

here is a video tutorial

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