On Thu, Nov 19, 2009 at 8:05 PM, Dave Keck <davek...@gmail.com> wrote:
> In my testing several months ago, though, I found that manually
> drawing the three segments (using NSImage's -drawInRect:) to be
> faster. So if performance is an issue, you might be better off rolling
> your own.

Did you account for resolution independence and integral pixel
alignment?  If not, I can see how your own code would be faster.
Otherwise, I imagine Apple has done a great deal of optimization on
these functions.  If not, it might be worth filing a bug.

--Kyle Sluder
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