Rajesh Gupta wrote:
> 1. Most of the work (including rendering) in Java3D gets done in native
> code, opengl and a bit in Java3D.dll. HotSpot cannot touch those portions,
> so it's wrong to expect HotSpot to improve frame rates or Java3D performance
> in general. My comparision of Java3D OpenGL/C++ yielded similar apparent
> performance on some very large parts. And that was, without hotspot, and in
> beta releases of Java2 and Java3D. I believe that if properly used and
> optimized (minimize Shape3D's and all) Java3D should be almost as fast as
> OpenGL.
Sure, but it shouldn't hurt performance this bad. There's some noticable
freeze ups with Hostpot + J3D.
> 2. SUN claims that real benefits of HotSpot are seen for Server side
> applications, large code which runs for a long time. See:
> http://java.sun.com/products/hotspot/launch/Q+A.html
I think most of that is due to the s-l-o-w Java2D implementation.
Anyways, what concerns me is not that it "doesn't speed up J3D", but
that
it slows it down ...
--
Augusto Sellhorn
GE Harris Energy Control Systems
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