This is a Gnome shell extension to run a GLSL shader loaded from a file.
Copy this folder to the gnome-shell extension folders, typically under
.local/share/gnome-shell/extensions.
In a terminal, you can use the following commands:
git clone https://github.com/scorpi11/shader-extension`
mv shader-extension ".local/share/gnome-shell/extensions/shader@tikei.de"You can now enable the extension in the Gnome extension settings.