>>1859542here
>>1859544Wait, what exactly are you asking about?
It's possible to do the same with a picture to make it look better (smoother, sharper) than the original one, yes. It depends on the pic and algorithm used though, sometimes you might end up with a worse result (glowing edges and shit). Artist sometimes do basically the equivalent of downsampling in games, creating a bigger image than the intended resolution and scaling it down
But if you set a 3840x2160 image as a wallpaper on a 1080p screen it's gonna get scaled down either way, it's basically windows doing the same thing in your place. You have the same starting point and roughly the same end result.
From what I recall using larger pics used to look much worse on older windows, but I don't think it's the case anymore. You're most likely to end up with a pic of the same quality. So if your question was "I have a 4K pic, should I set it as my wallpaper or resize it first?" it doesn't really matter unless you're on windows xp or something, which case it might make it worse but not better
And if for some reason you're thinking about enlarging a pic and scaling it back down, it won't work, if anything you'll lose quality. Games work the way they do because they actively generate the pictures you see, when you're telling a game to run in 4K instead 1080p it's essentially like telling an artist to draw the same picture from the start but on a bigger canvas. While upscaling a raster graphic is kinda like taking a finished painting and stretching that canvas and hoping the paint won't crack
>>1859554yeah it's like one pixel wide but it's there
