BTW, in case you're curious, here's how the WebGL 2.0 unavailability is represen...

BTW, in case you're curious, here's how the WebGL 2.0 unavailability is represented in Safari 11.0.2 on macOS 10.12.6, according to the Developer Console:

[Error] Unhandled Promise Rejection: Error: Can't find variable: WebGL2RenderingContext Evaluating https://magcius.github.io/model-viewer/render Evaluating https://magcius.github.io/model-viewer/viewer Evaluating https://magcius.github.io/model-viewer/embeds/main Loading embeds/main (anonymous function) (system.js:4:231) promiseReactionJob