It's nice for presentation for streams and YT videos but it'd also be kind of nice in real time for playing a game yourself at home as well. i went into video Aspect Ratio and put 16. how do screech it to fill the entire screen like ePSXe can.

The idea just came to me after watching some DOS game let's play videos on YouTube. i got PSone working but the screen is cropped with to black lines. You can do it, but you have to set RetroArchs aspect ratio setting to your displays aspect (16:9 or whatever) and then handle the image scaling in the shader. It would just display 'behind' the game display like a wallpaper and spill out into the black bars/columns outside the main render area that DOSBox usually doesn't take up. Perhaps it could also have an extra CONF entry for scaling/best fit options like fill/stretch/fit/1:1 etc. Same story as for PAL: the theoretically correct vertical stretch ratio is not quite 1.2, but close enough that it does not. However, the display is 16 units wide while the image width is only 15 units, so there will be black bars on the two sides. If you were playing on a 4:3 display this would be the end of it, but you're on a 16:9 display so the black bars get added to the side because it's either. Because the vertical ratios are identical, the image fills the screen vertically. Is there such thing or has anyone thought of having a feature in DOSBox where, defined in the CONF, you could add a border/background image file that would display in the black column bars around the render display (most useful for aspect ratio-corrected games)? So that, for instance, when you're playing a 320x200 aspect ratio-corrected game in 1920x1080 fullscreen resolution you could have a nice optional border around it? That could go for letterbox displays as well for that matter. Resident Evil 4 on GameCube was displayed in a letterbox view, which adds black bars to the top and bottom for a cinematic widescreen feel but they're part of the game's 'full' 4:3 image.

Retroarch black borders fill