They appear to be using WebGL 2, which works in Firefox and Chrome but not Safar...

Jasper_ · on March 3, 2018

Ah, I didn't realize that WebGL 2 had such rocky support. I'll look into porting back into WebGL 1, but I would require OES_vertex_array_object and searching online it seems to have as spurious support as WebGL 2, so I'm not sure it would be a huge improvement.

For now, I'll look into adding error messages for people that cannot initialize WebGL 2.

Narishma · on March 4, 2018

And only if your GPU/driver isn't blacklisted.