gl4java-usergroup

Re: [gl4java-usergroup] hi

[p <pe...@gm...>]

hi,
the mail from max gilead helped me:
>You need to activate the context. See GL4Java FAQ for code example. URL is
>on GL4Java page and here:
>http://3d.linart.krakow.pl/OfficinaArtificialis/OpenGL/GL4Java-FAQ.html.
so i think in gl4Java-words it means:

glj.gljMakeCurrent(true);
... do some opengl things
glj.gljCheckGL();
glj.gljFree();

that code worked on my system... but sometimes i got also a problem because the gl-system
was not inialized (gl was null)... so as it also mentioned in the gl4java-faq it is a
good approach to do all opengl-stuff within the (e.g.) display-method. i did it also in
this way: if i want to have new textures assigned i put the data in a queue and the
display-method checks the queue and does the work.
ciao
peter

Silvia Toscano wrote:

> This message was sent from Geocrawler.com by "Silvia Toscano" <sil...@ho...>
>
> Hi
> I am new too and i was wondering if you have resolved the problem..
> I have this error too but i am not using different threads, nevertheless,
> i also have this mark with gljckeckGL.
>
> Greetings
>

(((http://jzone.de)))

Re: [gl4java-usergroup] hi

[Max G. <gi...@li...>]

p wrote:

> glj.gljMakeCurrent(true);
> ... do some opengl things
> glj.gljCheckGL();
> glj.gljFree();
>
> that code worked on my system... but sometimes i got also a problem because the gl-system
> was not inialized (gl was null)... so as it also mentioned in the gl4java-faq it is a
> good approach to do all opengl-stuff within the (e.g.) display-method.

It's absolutely not necessary under one condition: GL component must be visible on screen (I
mean visible in the terms of user interface - it need not to be visible to the user, it may
be hidden under some other component). When it's visible you're guaranteed that it never is
null. If it is not visible (ie. destroyed) you will need to initialize it completely anyway
so that's not a problem.


> i did it also in
> this way: if i want to have new textures assigned i put the data in a queue and the
> display-method checks the queue and does the work.

I also tried this before. Definitely too complicated solution for any serious setup work. I
don't know what you're using it for so I can't suggest anything.

Bye,
Max


--
Max Gilead (gi...@li...) http://3d.linart.krakow.pl/OfficinaArtificialis
-----------------------------------------------------------------------------
--  Why is it that all of the instruments seeking intelligent life in the  --
--  universe are pointed away from Earth?                                  --

Re: [gl4java-usergroup] hi

[p <pe...@gm...>]

> I also tried this before. Definitely too complicated solution for any serious setup work. I
> don't know what you're using it for so I can't suggest anything.

hmm... that's what i used it for: there is a very fast software 3d renderer called anfy3d
(http://www.anfy3d.com). they provide a interface class called anfy3dAPI.class so i started to
implemented the 3d stuff using gl4java. and it works very fine, as a result, you can make
applets, that use gl4java if it is installed on the system, otherwise the applet use the
software 3D renderer. i've made an example:

http://www.jzone.de/java/a3ddemos/flat.html

if you dont have installed gl4java a flat eric modell will be displayed using the software
renderer, but if you have gl4java you'll see flat eric with a very higher framerate :) . so
since the anfy3dAPI has only few methods, that change texture data, it is not that complicate to
do the texture initing stuff in the display method. (the makers of anfy3d are on it to port
anfy3d completely using gl4java)
ciao
peter

--
(((http://jzone.de)))