I’m mostly trying out arcade games on the Flycast core, but tried Mame core as well, and I’m being faced with variable proportions of black borders on all four sides in almost every game. Some have them on top and bottom only. Some have a thicker top border than bottom. Same for the sides. All sorts of combinations. The same games on Mame(emulator, not core) don’t have this issue at all.
Not just Mame but pretty much every emulator out there has a “fit to screen” and/or “stretched” option available for different aspect ratios which extends it to fit your screen while keeping the aspect ratio intact. And most importantly, no black borders. Why doesn’t Retroarch have this super convenient and extremely important option?
Anyway, how do I remove these borders? I’m using a custom shader preset and it doesn’t have any option like that. I searched on google and found that there is an image-adjustment shader that has the option to crop. I found it in my shaders, but it doesn’t have the cropping option.
Integer scaling: Off
Aspect ratio: Core provided(tried 4:3 as well)