Is there any tutorial how to set up your game to work on different resolutions and screen aspect ratios?
I use a 16:9 1920x1080p screen myself, but I want my game to work on e.g. 4k and 21:9 screens, too. I have no idea how to set it up correctly.
What stretch mode should I take? What stretch aspect? What resolution should I take by default (for creating the game)? How do I set up a mainmenu background that works on 21:9 screens, too? etc