Hi David,

You've actually got it backwards -- OS X has progressively been offloading more and more drawing tasks to the graphics card. It began with the introduction of Quartz Extreme, and continued with Tiger's Core Image. (Of course, if the Mac's graphics card isn't powerful enough to support Quartz Extreme or Core Image, those features are disabled.)

See here for a more detailed discussion:

http://arstechnica.com/reviews/os/macosx-10.4.ars/14

http://arstechnica.com/reviews/os/macosx-10.4.ars/15

Cheers,

- Darcy
-----
[EMAIL PROTECTED]
http://secretsociety.typepad.com
Brooklyn, NY



On 10 Aug 2006, at 10:27 PM, David W. Fenton wrote:

On 10 Aug 2006 at 12:45, Darcy James Argue wrote:

Because -- as I've said before a whole bunch of times -- 2D graphics
performance is CPU-bound, not GPU-bound.

Um, I think there's an interesting intersection here with Hiro's
posts, in that he says that on the Mac, 2D rendering is in the CPU,
not in software or the graphics subsystem, whereas 2D rendering on
Windows has to be elsewhere (if it's handled in software, it can be
handed off to a graphics subsystem).

This would be a difference between Windows and Mac that could make
your position correct for the Mac and incorrect for Windows.

--
David W. Fenton                    http://dfenton.com
David Fenton Associates       http://dfenton.com/DFA/

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