On 31 Mar 2009, at 12:03, Jeremias Maerki wrote:
FWIW:
The change that happened from 0.94 to 0.95 was the introduction of a
new
image loading framework. But that has improved performance in most
cases
rather than the opposite. Specifically for PNG, there was a change:
before, our internal PNG codec was used while now we use the PNG codec
from ImageIO. That this should have such an effect surprises me as I
would expect that to actually be faster.
As always: It depends... :-)
This should be the case if the ImageIO codec is a native one. I seem
to remember a similar issue on Mac OS X for TIFF output. Apple does
not supply a native TIFF codec(*), so the pure Java implementation is
used, and that one is much, much slower than the TIFF codec we used to
use.
(*) I would have to look up if that's still the case. With 1.4, they
did supply a native codec, but apparently it raised some security
issues, so in 1.5, it was removed. Haven't checked yet if they
included one with their 1.6 JVM.
Cheers
Andreas
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