Overlay for running GPU shaders on top of Windows desktop.

Features

• applies shader effects on top of any window on the desktop
• includes RetroArch shader library covering:
  • CRT monitor simulation
  • image upscaling
  • TV / VHS simulation
  • softening, denoising, blur, sharpen and many more
• works with most emulators, retro platforms and pixel art editors including:
  • DOSBox, FS-UAE, Altirra, ScummVM, AGS, VICE, Aseprite etc.
• excellent companion for pixel art drawing showing shaded and/or aspect-ratio corrected preview
• you can even use it on top of YouTube, Twitch or modern games
• saving and loading profiles
• multiple operating modes, including borderless fullscreen
• can be captured by OBS (using Game Capture source)

Link to Github Page