CanIUse reports that it's only available in Safari Technology Preview for now, which is a macOS program: https://www.caniuse.com/webgl2
With WWDC 2021 only ~9 days away, one can hope that they'll announce its support on all platforms in the next major release. If it was already "good enough" last September…
I was aware it was in Safari Technology Preview, but I wouldn't really count a feature in a beta release as being available. And who knows when it will be available on iOS.
CanIUse reports that it's only available in Safari Technology Preview for now, which is a macOS program: https://www.caniuse.com/webgl2
With WWDC 2021 only ~9 days away, one can hope that they'll announce its support on all platforms in the next major release. If it was already "good enough" last September…