https://wccftech.com/native-super-mario-64-pc-port-appears-with-dx12-and-reshade-raytracing-support/

An unofficial Super Mario 64 PC port was showcased by YouTuber 'Unreal' earlier this week. What makes this particularly interesting is that it appears to be a native port, that is to say it doesn't use Nintendo 64 emulation software. In fact, this Super Mario 64 PC port even supports Microsoft's DirectX 12 API and is compatible with Pascal Gilcher's raytraced global illumination (RTGI) shader injected via ReShade.

In the video below, the YouTuber experiments with RTGI, MXAO (also made by Pascal Gilcher), Screen Space Reflections, and Advanced Depth of Field effects. Needless to say, the game's graphics is improved, though the final result is admittedly a bit weird as everything else clearly still belongs to a game that's almost twenty-five years old now.