The core’s still beta, but lets players play whatever games, PSCX2 nightly, Dolphin, Ryujinx, etc while using RetroArch’s shaders and overlays.

To install:

  1. Download the file
  2. Place the core in your cores folder of RetroArch
  3. Modify the partials.txt file for the window you want to use
  4. Then load the .txt file with the WindowCast core

There are more detailed instructions in the readme file of the download.