RetroArch download

Innovation

RetroArch has been first to market with many innovative features, some of which have became industry standard. Because of its dynamic nature as a rapidly evolving open source project, it continues adding new features on an annual basis.

• Dynamically loadable programs (cores): Libretro as a backend technology allows RetroArch (or any frontend implementing the Libretro API) to run whatever multimedia program it wants as long as the lifecycle of the Libretro program is properly implemented. This main innovative feature has led to various other programs also adopting the Libretro API, making its emulator and game cores widely playable across various applications outside of just RetroArch.
• Dynamic audio rate control: An attempt at solving one of the age-old problems of audio and video sync while not having either crackling audio or massive frametime deviations. The method works by dynamically adjusting audio resampling ratios in such ways that ideally, the audio buffer is never underrun nor overrun, thus avoiding blocking on audio.
• Runtime programmable pixel shaders on the GPU: Introduced in 2011, first supporting the Cg spec (now deprecated) and GLSL. Later on, a piece of middleware called SPIRV-Cross was developed so that a new shader spec (Slang) could allow us to run the same shaders regardless of the graphics API.
• Runahead: Introduced in 2018, runahead is a sophisticated way of running the game in a second session. The end result of this when it works is a vast reduction in input and video latency without any perceivable ghosting issues.
• AI text translation: This feature allows users to capture the current state of the game and feed it to a customizable endpoint for additional processing. With the help of OCR (optical character recognition) and other techniques, the AI service can provide a live translation of a game, or text-to-speech capabilities for the visually impaired among other things, either on demand or automatically.