Mostly adapted from the "GUI in 3D Demo" provided by the Godot Foundation. While being very good as a reference, I found it hard to actually use it for anything so I made this.

Features:

• Control the screen's resolution and physical size independently
• Use the camera as a mouse when in captured mouse mode

To use, place a screen in a scene and then child GUI scenes to it. When the game runs it will reparent the child scenes into the screen, retaining whatever signal connections or configuration you set up.