Re: [gl4java-usergroup] Errors

[Sven G. <sgo...@ja...>]

Virgil Wall wrote:

> Ok, I think I've got it figured out.  Version 2.3.1.1 was letting me get
> away with all sorts of tom foolery.  For starters, the paint method of
> GLCanvas is being called, which is in turn calling my display.  All of this
> is happening before I've set up appropriate data structures ,etc.  My test
> application is written to basically do this kind of thing (rewritten for
> simplicity):
> 
> public void run(){
>     setupdata();
>     while(true){
>         modifydata();
>         canvas.sDisplay();
>     }
> }
> 

Dear Virgil,

I want to encourage you to use GLAnimCanvas,
or hte way GLAnimCanvas uses the animation update methods !

I see it in many demos, that you use the threaded sDisplay call for
default !
This only works within a very good native multithreading JVM,
and does steals a lot of ressources ...

You can see, that the GLAnimCanvas demos does have the option to
refresh directly (useRepaint... method), but it is disabled for default.

I think, that the repaint method should be fast enough for us ... >= 20
fps :-)

Of course, the direct way gives us quiet the same fps, like the native
application, but we do pay responsiveness of the JVM for it !

Please check the PERFORMANCE mail from me to the mailinglist,
and the PerformanceLog's within the demos/MiscDemos directory !

Yours, Sven
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