On Tue, Jan 12, 2010 at 2:01 AM, Evan Martin <[email protected]> wrote:

> On Mon, Jan 11, 2010 at 9:04 PM, Chris Evans <[email protected]> wrote:
> > 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?
>
> [...]



> - Also in my experience Chrome+Skia tends to be faster but sometimes
> less smooth than Safari's CG.  See also all of Dean's Pre3d demos.
>

In general, Skia plays it a little fast and loose, and prefers speed over
accuracy, whereas  CG tends to prefer accuracy over speed (at least in the
Windows software path that Safari/Win uses).  For example, Skia uses a
truncating (instead of rounding) compositing mode.  In practice, this makes
little difference to visual results, although there are some exceptions.

Stephen

-- 
All truth passes through three stages. First, it is ridiculed. Second, it is
violently opposed. Third, it is accepted as being self-evident. --
Schopenhauer
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