Tv retroarch borders7/25/2023 Below is a list of systems I’ve tested, and their resolution. Whilst most systems will output 224 lines, some will use 240. Will probably look weird at anything less than 1080p, but you can get the full thing if you download them. To add this, go into the the Retroarch menu (select + X for me), core options > video > shaders > shader pass to 0 > select the dotmask.glsl in opt/retropie/emulators/retroarch/shader/crt/, leaving both options as ‘don’t mind’ It gives a subtle ‘aperture grill’ effect on the image, softening the edges a little, without blurring. This last bit is optional, but I’ve had good results with the dotmask retroarch shader. This keeps them visible, but doesn’t darken the image (much). If you look closely at the screen, you might see a few instances where the lines aren’t exactly lined up with the pixel edge, but it seems very rare, and unnoticeable (to me!). How do you create a scanline image which fits 224 scanlines, in 1080 pixel high image? The maths doesn’t work! What I’ve done is tested out a variety of image scaling techniques, and believe I’ve found the best fit with ‘linear’ scaling. What about scanline overlays? These have the same issue. If you change your Retroarch render resolution to ‘output’ in the launch menu (press ‘x’ on a keyboard when a rom is loading), it will render at your output resolution (1080p), and suddenly scaling is much better! I can’t notice any thick rows of pixels at this resolution. This explained the scaling issues to me – in trying to fit 224 into 480, it has to DOUBLE the size of the occasional row of pixels. How come I’m noticing one row of pixels being 1/1080 bigger than another?! This set me off…īy default in Retropie, Retroarch runs at 640×480, regardless of your video output setting. Option 2 is sometimes acceptable – eg, some games will treat the top and bottom extremes as potentially being hidden on some TV sets, so crucial information won’t be displayed there (eg, Mario Bros on the NES) This works for many people and is absolutely the best way to get a 100% correctly scaled scanline image on a 1080p screen. Option 1 is detailed in patl’s thread linked above.
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