DoHyug Kim,
Prior to the release currently under development (jdk 1.4), the
only Java2D operations that are affected by the
type of video card in the system are those going directly to the
screen that could be accelerated by current PC hardware
(opaque lines, fills, etc.). Otherwise, the video card has little
impact on the overall performance of Java2D. This is because any
operations going to offscreen images (such as back buffers)
are using software rendering techniques.
As of jdk 1.4, there will be support for hardware acceleration
for offscreen images. In particular, simple opaque operations
(fills and copies) will be offloaded to the video card
if appropriate. At that time, the type of video card in
the system will have some impact on the overall performance
you see. However, since the range of operations supported
through hardware is not that extensive (yet), it would not take
a top-of-the-line video card to see good performance numbers;
most video cards on the market for the past 3-5 years support
the kind of operations that we will be accelerating. Some cards
do these operations faster than others, of course, but the
biggest improvement will be in using the hardware offscreen
images instead of software images.
Chet.
>
> As far as I know, the performance of Java2D is quite
> dependent on the specific configuration of PC (Especially
> what videocard is in use). And it seems that there were
> some emails from Java2D team in this mailing list
> explaining the results of their testing of Java2D on various
> hardwares.
>
> What I wish to know is what's the best configuration
> for maximizing the performance of Java2D.
> Could anybody share his/her experience?
>
> Thanks.
>
> DoHyug Kim
>
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