Look at the console-specific page in the sidebar of this wiki and note where the system's configuration file.įor example, the GBA config file is /opt/retropie/configs/gba/retroarch.cfg so any changes made in there will apply only to GBA games, not to other systems. (1080 - 480) / 2 = 300 is how far to offset vertically. (1920 - 720) / 2 = 600 is how far to offset horizontally. To do this, we take the (original resolution - console resolution) / 2.įollowing our example of a 1920x1080 screen showing a 720x480 GBA image, do the following: Now we've determined our actual display resolution, and the resolution we want the game shown at, we need to centre the image on screen. An image of this size fits within a 1920x1080 display, is smaller than the full 1920x1080 display, and is still in the same aspect ratio so the game won't look stretched. Multiplying by fractions (eg: 2.66, 3.75, 4.4) may end up with strange ugly pixel effects, especially if using shaders which apply scanlines or similar effects.įor example, the GBA resolution was 240x160 so we'll multiply those up by 3 to land on 720x480. It is best to multiply by a whole number (eg: 2, 3, 4) so the original pixels get sized up consistently. Take the original console resolution and multiply both numbers by the same amount to get a larger gameplay resolution which is still in the same aspect ratio and fits within your actual display resolution. Later home consoles (SNES, Master System, Mega Drive) often had multiple display resolutions and are not covered by this article. Determine Console Resolutionįind the original resolution of the console by looking it up somewhere like Wikipedia. You may wish to refer to the Wikipedia Display resolution page. As a special case, if no arguments are received, it is treated the same as running retroarch -menu. To start immediately in RGUI without any game or core loaded, use the -menu command line option. If your TV or monitor displays at another resolution, find that out and keep it in mind. By default on PC, the F1 button will enter the menu. If your TV is displaying at 1080p, the resolution is 1920x1080. This tutorial covers making the display of a RetroArch libretro emulator smaller and centred on the screen. This is especially true of handhelds like Game Boy and Game Boy Advance where the original resolution was so low that blowing these up to 1080p results in HUGE pixels. Some people like to have their gameplay on a smaller area in the middle of the screen, rather than blown up to the full display resolution of their TV. Universal Controller Calibration & Mapping Using xboxdrvĬonvert RetroPie SD Card Image to NOOBS Image Validating, Rebuilding, and Filtering Arcade ROMs
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