ShaderGlass is a utility for applying GPU shader effects over a Windows desktop or Linux/Wine environment. Rather than presenting a conventional game world, it works as a visual layer for other software: its effects can appear over the desktop, in a floating window, or in a built-in full-screen mode.
Its library draws on RetroArch shaders, with options spanning CRT-style monitor simulation, image upscaling, and treatments inspired by televisions, VHS and handheld screens. The software also offers adjustments such as softening, denoising, blur and sharpening, alongside customizable shader parameters and operating modes. Users can save and load profiles or import external .slangp and .slang shaders, giving the tool a flexible role in shaping how other content looks.
ShaderGlass is designed to sit over a range of applications, including emulators, retro platforms and pixel-art editors; the listing also mentions use over YouTube, Twitch and modern games. For pixel art, it can provide a shaded or aspect-ratio-corrected preview, while OBS can capture it through a Game Capture source. These uses define the experience as individual visual customization, not a game organized around shared matches or a stated multiplayer format.
