Bundyo: That's not a question to me I.e. I can't verify it, since I don't even have a device yet (and it's not going to come too soon - US isn't targeted yet). However in theory, the engine supports it but whether it can work depends on the underlying drivers, and like w00t noted it can have issues.

How does about:support identify the driver?

Also, what is set in about:config to these keys:

layers.accelerate-all
layers.acceleration.disabled
layers.acceleration.force-enabled
webgl.force-enabled
webgl.disabled

Even if drivers allow it, but those keys are set to disable acceleration, it naturally won't work. And the other way around, even if they are set to enable it but drivers are bad, you won't get a good result (and probably get a crash altogether).

How many FPS do you get in this test?

https://developer.mozilla.org/media/...ckage/HWACCEL/