How to do screen distortion/manipulation special effects?

[nines]

Godot Version

4.3

Question

Is it possible to do this in Godot? See https://youtu.be/U-9ATcULmPU?t=198 as an example. In this game, when you encounter an enemy, the game twirls the screen around.

Another example: https://youtu.be/4OrGkQAAyq4?t=74 : when the missile exploded, there is this impact blast magnifying special effect. Afterward, we also see some heat distortion effects as well.

Another example: https://youtu.be/4OrGkQAAyq4?t=220 : see the “black hole” twisting special effect?

So how do we do these in Godot?

[pennyloafers]

Those look like screen readings effect.

Screen-reading shaders

You would take a frame of the screen and manipulate the pixels.

In Godot 4.3 it allows you to do this easier with compositor effects.

The Compositor