I'm not sure how it works in Java's scene anti-aliasing, but generally full
screen anti-aliasing takes the current screen size and renders it at twice
the size (i.e. if canvas is 800x600, then it renders at 1600x1200).
Rendering 4 times the data makes it much slower. Then it samples the points
around each pixel and averages them to reduce it back down to 800x600.
A 16MB TNT1 card is not going to render 1600x1200 very fast :) Do you have
a friend with a faster video card that you could try it out on? If not you
may want to post your app here and someone can try it out for you. I only
have a Matrox G450 here at work, ut can give it a try.
Kevin
> -----Original Message-----
> From: Discussion list for Java 3D API
> [mailto:[EMAIL PROTECTED]]On Behalf Of Michael P. McCutcheon
> Sent: Friday, August 24, 2001 12:50 AM
> To: [EMAIL PROTECTED]
> Subject: [JAVA3D] Scene Antialiasing? Why so slow?
>
>
> I'm running a P2 450 Mhz, 256 MB PC 100 Ram, 16 MB TNT1 graphics card,
> NVidia 12.41 drivers, Windows 2000, and JDK 1.3.1 with Java3D 1.2.1_02.
>
> I have a simple world that just has some cubes in it. The cubes
> move around
> according to keyboard input. Normally, this runs at about 40-60 FPS.
> However, when I turn on Scene AntiAliasing, it goes down to about
> 10 SECONDS
> PER FRAME, and sucks up all the CPU in doing so.
>
> I check that scene antialiasing is available on the Canvas3D. It returns
> true.
>
> Why is this so slow? Is it that my TNT does not support this feature?
>
> Is this faster with JDK 1.4? If so, how much faster (given that it is
> totally useless as it is now.)?
>
> Will Java3D 1.3 solve this or do I just need to get a bigger CPU/Graphics
> card?
>
> Thanks,
>
> Mike
>
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