The shadertoy demo "Tribute to Marc Antoine Mathieu" converted to GeeXLab.
Link: http://www.geeks3d.com/hacklab/20171130/shadertoy-2-geexlab-tribute-to-marc-antoine-mathieu/
(http://www.geeks3d.com/public/jegx/2017q4/geexlab-shadertoy-tribute-to-marc-antoine-mathieu-02.jpg)