Re: Speed of Quartz (was: optimizing compilers)
Re: Speed of Quartz (was: optimizing compilers)
- Subject: Re: Speed of Quartz (was: optimizing compilers)
- From: "Sven-S. Porst" <email@hidden>
- Date: Tue, 12 Feb 2002 16:08:49 +0100
>
http://homepage.mac.com/tom_waters/.cv/tom_waters/Public/
>
QuartzBench.tar.gz-binhex.hqx
I Downloaded Tom's app and played around with it. Doing this, I made the
following 'discovery': When printing the app's output to a PDF file and
displaying it in Acrobat Reader, rendering it will take about a second
(while displaying it in Preview will take more than 10 seconds).
So Acrobat seems to be quite a bit quicker than Preview (Cocoa/Quartz).
Comparing the bitmaps shows that there is a difference between both
bitmaps but that difference seems to be uniform (and not focused at
intersections, say). My guess (and this is just guessing...) is that
Acrobat probably uses a different Alogorithm for anti-aliasing. In
particular, bot images look about the same...
So, why is Acrobat so much faster?
Sven
--
Sven-S. Porst . PGP: 0x0085ABA3 .
http://homepage.mac.com/ssp
I never dared be radical when young, for fear it would
make me conservative when old.
-- Robert Lee Frost
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