/vr/ - Retro Games

>>9908083
Bilinear by itself sucks, applying it to after the result of an integer nearest neighbour upscale is fine.

>>9803145
Arguably, the best way is "as little as possible". Blurring is inherent when upscaling anything with bilinear.

In cases where you can't integer scale to fill the screen, you use nearest neighbour scaling to get close and then bilinear scale to fill the screen.
Scaling down is slightly better than scaling up

SNES games have 224 vertical resolution, so you can nearest neighbour integer upscale to 1120p or 896p and then bilinear scale to 1080p. Either will preserve the look of raw pixels pretty well.

Even on handhelds (such as Anbernic stuff) with a small dimension high DPI 480p screen, a 2x prescale to 448p before scaling bilinear to 480p is surprisingly presentable.