[soyxan]

a screensaver add-on for shadertoy has already been created and is part of nightly RPI builds by Milhouse

You can install onto Gotham builds with this repo:
https://github.com/popcornmix/repository...ornmix.zip

Download the zip file and install from setting/addons.
And then install from the new popcornmix repo the screensaver and visualization.

Select shadertoy screensaver in appearance/screensaver settings
Select shadertoy visualisation in music/playback settings

You can change the screensaver preset in screensaver settings.
You can change the visualisation preset when music is playing. Switch to fullscreen mode, bring up controls (enter) and select preset (rightmost "mountain" control in confluence).

Only tested on Pi, but they might work on other ARM platforms.

I am using Openelec 5.0.8 and installed your repo and just the Visualization add-on (I am not interested in the screensaver), After enabling the visualization in Music Settings nothing is displayed when playing music. I am using Xperience1080 skin.

Am I doing anything wrong?

Was my mistake, Xperience1080 disables visualizations by default. Now is working.