I've filed https://bugs.webkit.org/show_bug.cgi?id=33515
On Mon, Jan 11, 2010 at 9:04 PM, Chris Evans <cev...@chromium.org> wrote:
> Hi,
> I found this interesting: http://a.qoid.us/google.html
> Because it's clearly very non-JavaScript focused (just a CSS rotation) and
> yet the browsers exhibit very different performance characteristics.
> All on my underpowered Windows laptop,
> Chrome 3 & 4: smooth. Very nice anti-aliased accurate rendering.
> Safari 4: not quite as smooth; less fps but still not bad. Text / lines more
> jagged and text "wobbles" during the rotation.
> The other browsers do not support the CSS used / required for this demo.
> There was a similar version, but using SVG animation to do something very
> similar. (It's currently offline). Firefox and Opera were able to attempt
> the rotation of this one but both performed much worse that Safari and
> Chrome.
> Anyone know why Chrome, and to a certain extent Safari, are so much better
> on this non-JS test? Is the Skia library underpinning Chrome superior?
> There's also a difference between Chrome Windows and Chrome Linux. Whilst
> Chrome Linux performs smoothly, the text is clearly jiggling around and even
> getting more / less bold throughout the rotation cycle. Doesn't do that on
> Windows. Any ideas?
>
> Cheers
> Chris
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