https://wccftech.com/retroarch-1-9-9-adds-amd-fsr-and-high-dynamic-range-support/

RetroArch, the popular open source frontend for emulators and videogames, just got updated to version 1.9.9. This new release contains some major new features, such as support for AMD's FidelityFX Super Resolution spatial upscaling technology.

Interestingly, AMD's official implementation of FSR is done through compute shaders, but the RetroArch contributor Jonatas Esteves managed to add it as a pixel shader.