Anyway to do this? I mean when the output is 240/224/288p, RetroArch loads a shader that has scanline and when it switches to 480i, it’ll load a deinterlacing one. Some of PS1 games for example are 480i in-menu and 240p in-game.
At the moment, we can save the shader profile for a specific game or core, but take a game like Ridge Racer 4. It’ll switch to 480i when in menu and to 240p when in game, so on a real CRT we’ll see scanline in game but not in the menu. Or Gran Turismo 2, there shouldn’t be a lot of these though…