>Is the demo using user agent strings to determine compatibility >I am on Chromium, not Chrome Don't know about your build, but I'm using Ungoogled Chromium,

>Is the demo using user agent strings to determine compatibility >I am on Chromium, not Chrome Don't know about your build, but I'm using Ungoogled Chromium, and it has the exact same user-agent string as Google Chrome. Have you enabled the WebGL permission for the site in site settings? I think it was disabled by default for me.