Lower Resolution for Retina Display

Unity Engine
1

I want to run my game at half retina resolution on macbooks both for performance and battery reasons. I would prefer not to have a resolution selection at the start or in game.

As Unity offers Screen.SetResolution and Screen.dpi I was thinking this should be easy. If Screen.dpi>200 (highDPI screen) halve the resolution. For testing purpose I’m using 50 dpi.

{
Screen.SetResolution(Screen.currentResolution.width / 2, Screen.currentResolution.height / 2, true);
}```

Problem with my code seems to be that Unity remembers the resolution I set last and that dpi remains the same, no matter what resolution is set. This causes an infinite shrinking of my resolution on every restart. How do I clear the resolution setting? How do I get the actual screen resolution on start up with correct dpi?
2

You could probably base things off of the highest available resolution in Screen.resolutions. Note that Screen.dpi is not guaranteed to give valid results on all devices.

It’s pretty weird for a game that is capable of running at multiple resolutions to refuse to let the user control it, though.

3

That seems to work pretty nicely, thanks. I had not expected Screen.dpi to be resolution independent, but that seems to be the case. So I hope this will work on retina displays, but it looks promising.

My game has no settings at all, I’m trying to keep everything to the minimum.

4

Your customers will not thank you for having no settings.