(Feature request) Allow GLSL shaders to be used as wallpapers

[hardBSDk]

You can see two GLSL shader viewers written in Rust below:

• https://github.com/fmenozzi/shadertoy-rs
• https://github.com/lowlevl/glou

[TornaxO7]

Not gonna lie, having some music sync, would be awesome as well!

[TornaxO7]

Eh, so I started to write a shadertoy-like-app and lib to integrate shadertoy-like fragment-shaders into applications: https://github.com/TornaxO7/shady and it's also a proof of concept regarding the music sync: https://filebrowser.tornaxo7.de/share/c0pGvz9K (the preview doesn't seem to play my audio, but if you download the video, there should be sound).

However, it's written for wgpu and I don't know (yet) if I can somehow include it to the compositor or whatever cosmic uses to render the background ;-; (and it's also definetely not stable (yet?) so please don't set your hopes to high 🙏 )