Feature suggestion: crop image

[Shady Guy Jose]

The PSP screen has a 480x272 resolution, which isn't a perfect 16:9, for some reason I never understood, but that supposedly has something to do with multiples of 16 decreasing the GPU load. When PPSSPP renders games at multiples of this resolution, we get stuff like 1920x1088 or 3840x2176. Most people nowadays have 1920x1080 monitors, with a few crazy people such as myself having 3840x2160 monitors. PPSSPP currently makes it so that the image will either preserve its aspect ratio with small black bars on each side, or stretch to fill the whole screen. This makes scaling unavoidable. However, I wouldn't mind losing 8 lines at the top and bottom to get a perfect, unscaled, 3840x2160 image, and I'm sure most people with 1080p monitors would say the same for half as many lines. But is this even possible? I have little knowledge of the subject, so it may be a dumb suggestion.