W3C home > Mailing lists > Public > public-web-perf@w3.org > June 2011

Re: CSS animation perf statistics

From: Boris Zbarsky <bzbarsky@MIT.EDU>
Date: Mon, 13 Jun 2011 08:52:43 -0700
Message-ID: <4DF6324B.6@mit.edu>
To: public-web-perf@w3.org
On 6/13/11 6:36 AM, Kyle Simpson wrote:
> But, noted was that not all systems benefit from this approach (namely,
> those which do not have the ability to hardware accelerate such things).

Whatever that means...

> - are CSS transitions/animations hardware accelerated

Defined how?

> - what is the (avg/min/max) framerate of the transitions/animations on
> the page (the currently executing one and/or the most recently executed
> one)

Again, defined how?

> - the CPU usage stats for the current or previous animation(s)

What does that mean?

> I just wanted to ask if such data is already exposed, or planned to be
> exposed, in any interface, or if it's agreed that this type of data
> would be useful and relevant to expose to the JavaScript layer?

I strongly feel that attempting to expose such data is likely to lock 
mental models of CSS animations into buckets that don't match reality or 
(lock reality into suboptimal implementations).

Received on Monday, 13 June 2011 15:53:22 UTC

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