What you're describing is differences between Windowed view and what you'd
expect in Fullscreen view.
In order for applications to perform well in a fullscreen view, the desktop
resolution has to be changed. Under DirectX, this is simply a parameter
passed in at runtime. But this isn't possible to do when using OpenGL (at
least, it wasn't last time I looked -- something about AWT needing to be
updated).
Running a fullscreen app at a defined resolution isn't within OpenGL's
sphere of influence. It's the windowing manager who handles that. When
using a tool like glut, it's trivial to call glutGameMode("640x480@60").
The screen changes to 640x480 and 60Hz and renders in fullscreen. However,
depending on the app and hardware, you may get a drastically lower framerate
at 1024x768 at 75Hz.
When you resize a Windowed application, you're doing basically the same
thing as increasing your resolution from 640x480 to 1024x768, for example.
You aren't affecting the refresh rate as you're not changing any parameters
of your desktop.
This is another feature I'd really like to see implemented.
----- Original Message -----
From: "Scott Smith" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, April 09, 2001 2:29 PM
Subject: [JAVA3D] Performance issues
> Hello:
>
> We're evaluating Java 3D for an internal project
> and was wondering whether anybody else is facing
> similar issues.
>
> The animations in the zoomed mode seems to be
> really slow or geomtry updates don't work
> properly. Even the Java 3D 'gear' demo,
> looks fine normal view, but gemometry updates
> are very inaccurate in the 'zoomed' mode. This
> is running natively Sun Ultra-10 with 512Mb!
>
> The question we have: Is this typical of Java 3D?
> We're really excited when we heard about Java 3D initially,
> but we're not sure whether it scales up. Is there anybody
> out there using Java 3D for real world problems? (huge geomtries
> like automotive/aircraft parts with animations and user interactions
> over the web?)
>
> Any comments or paper references or works on cross-comparisons of
> Java3D, GL4J (or magician etc.) would be greatly appreaciated.
> (Specifically real commercial experiences with these tools).
>
> Thanks
>
>
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