Rotate my game viewport (non-mobile) landscape to portrait

Godot Version

4.1.3

Question

Hey Everyone

I’ve made a shooting arcade game, Japanese vertical scrolling style.

I made the game 480x960 in a HD 1920x1080 window.
I’m wanting to rotate the viewport 90 degress, so the game displayed in portrait mode.
ie 960x480…

I found this solution made in Godot 3
https://twitter.com/hiulit/status/1552684574211186688

But I’m using Godot 4 and I’m not sure how to convert this to Godot 4.

Any help would be appriciated.

Thanks

Have you tried just copy pasting the code from twitter and adjusting the parts where the engine gives you errors?