Re: [gl4java-usergroup] GL4Java + KDE2.1b2's Konqueror

[Kenneth B. R. <kbr...@al...>]

> experiences with:
> 
> XFree86 4.0.2, GL4Java 2.5.0, KDE2.1b2 + konqueror 2.1b2 and
> 	- jdk1.2-sun: no display ..
> 	- jdk1.3-sun: no display ..
> 
> 	- jdk1.3-IBM: runs well
> 	==================

I've been running GL4Java on top of Sun's JDK 1.3 on Windows 2000
successfully with an NVidia GeForce.

I had some problems porting some code to GL4Java. Specifically,
in order to get animation working at all and with good
performance, it was necessary to subclass GLAnimCanvas and use
the following settings:
  setUseRepaint(true);
  setUseFpsSleep(false);
  setSuspended(false);

I found that calling sDisplay() in my main thread reliably
crashed the machine (apparently doing something relating to
multithreaded access to the OpenGL context the GeForce didn't
like).

I should note that I played a little bit with the non-free
Magician binding and believe that there are some unresolved
issues with GL4Java's interaction with the window system.
Specifically, a friend and I did an experimental project in which
we shoehorned some of GL4Java's sources into the Magician
APIs. Unfortunately, it wasn't stable (crashed frequently on his
machine), likely due to my inexperience with the multithreading
issues in interacting properly with the AWT. However, performance
of this system appeared to be significantly better than my first
attempts with GL4Java, probably because we were able to avoid the
repaint() mechanism and associated thread synchronization.

I'm planning on doing some more work on this over the next few
weekends -- if anybody has experiences to share or would like to
collaborate please send mail.

-Ken


_____________________________________________________________________________
Kenneth B. Russell (kbr...@al...) http://www.media.mit.edu/~kbrussel