Experience the nostalgic appearance of CRT displays
Say Hello to RetroVisor
About
RetroVisor is a macOS app that applies real-time, shader-based visual effects to any active window on your desktop. It gives modern applications, such as emulators or media players, the nostalgic appearance of vintage CRT displays. Inspired by ShaderGlass on Windows, RetroVisor achieves this effect without modifying the original software in any way.
Under the Hood
RetroVisor leverages Apple’s ScreenCaptureKit to record screen content in real-time. The captured image is sent through a GPU pipeline and drawn back onto the screen, perfectly aligned with the original window. This gives the effect of a transparent overlay applying visual enhancements without altering the source application, enabling seamless and immersive retro visuals.
Usage
When RetroVisor starts, a movable effect window appears. Simply position it over any running application and double-click to freeze it in place. The window will then display the live content with shader effects, ignoring user input. Use the menu bar or app icon to unfreeze it. Zooming is supported via trackpad gestures or menu options.
Permissions
RetroVisor requires screen recording permission to operate. To use the tool, you must grant the necessary permission in System Settings. Without it, macOS will block the application. RetroVisor is open-source and released under the terms of the GNU General Public License 3.0.
Impressions
RetroVisor on top of vAmiga
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