gl4java-usergroup

Re: [gl4java-usergroup] Dynamic loading of fn's

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

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On Wednesday 11 April 2001 02:57, Steven Hugg wrote:
> Sorry, my question was unclear ...
>
> What I meant: When GL4Java dynamically loads a function for the first
> time (by way of getGLProcAddressHelper) does it call any gl*** functions
> inside of that code?  If it does, this could potentially upset
> glBegin..glEnd blocks.
>

no !

well, you can see, that only glXGetProxAdress is tried to fetched/called ..

in gl4java 2.7.1 (since 2.7.0),
all function pointers are now global and fetched right after loading 
the libraries !

> The problem is that I am experiencing is "invalid operation" when
> calling a command for the *first* time inside of a glBegin..glEnd pair.
> This could be glNormal, or glTexCoord.
>
> I can fix the problem by calling the commands in my initialization
> routine, *outside* of a glBegin..glEnd pair (they do nothing in this
> case except load the function inside GL4Java).
>
> I don't know what's causing the problem .. but if something inside of
> getGLProcAddressHelper (or a function it calls) happened to call
> glGetError internally, that function is prohibited inside of
> glBegin..glEnd and throws an error when glEnd() is called.
>

this problem may be fixed now with 2.7.1 ..

> Food for thought..
>

cheers, sven

> take care,
> Steve


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Re: [gl4java-usergroup] Dynamic loading of fn's

[Steven H. <hu...@fa...>]

Sorry, my question was unclear ...

What I meant: When GL4Java dynamically loads a function for the first
time (by way of getGLProcAddressHelper) does it call any gl*** functions
inside of that code?  If it does, this could potentially upset
glBegin..glEnd blocks.

The problem is that I am experiencing is "invalid operation" when
calling a command for the *first* time inside of a glBegin..glEnd pair. 
This could be glNormal, or glTexCoord.

I can fix the problem by calling the commands in my initialization
routine, *outside* of a glBegin..glEnd pair (they do nothing in this
case except load the function inside GL4Java).

I don't know what's causing the problem .. but if something inside of
getGLProcAddressHelper (or a function it calls) happened to call
glGetError internally, that function is prohibited inside of
glBegin..glEnd and throws an error when glEnd() is called.

Food for thought..

take care,
Steve


Sven Goethel wrote:
> 
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> 
> On Sunday 08 April 2001 02:58, Steven Hugg wrote:
> > I have a question... if I call a function that hasn't yet been called in
> > my program inside of a glBegin()..glEnd() pair, won't that cause havoc?
> > My theory is that it is the cause of all those spurious GLContext
> > exceptions everyone has been experiencing, because you're limited to a
> > very specific set of commands inside glBegin..glEnd.
> 
> sorry, i do not understand ..

Re: [gl4java-usergroup] GL4Java Installer

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

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On Sunday 08 April 2001 18:41, Jiba wrote:
> Hi,
>
> Is there a way to call the Installer from a Java application ?
>
> A11W
>

Of course !

look at the source GL4Java/Installer/GL4JInst.java#main

here you can see, 
that we just add a little frame around the applet ;-)

of course .. you may have to add a signature for:
	- msie
	- netscape

how to add a dummy signature ?

look at the GL4Java/Installer/*.[sh|bat] shell scripts ..

cheers, sven

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Re: [gl4java-usergroup] Magician discontinued [from will-be-revived-again-or-finally-die-this-time dept.]

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

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yeah, that's the point !

i have described this dangerous behavior of 
closed sourced projects within the general gl4java doc's (overview) also !

so, i just can say: "shit happens" :o|

cheers, sven

On Saturday 07 April 2001 10:49, Max Gilead wrote:
> Hello!
>
> www.opengl.org says:
>
> 'Magician OpenGL for Java only available until May 1, 2001
> <http://www.arcana.co.uk>
> /04/04/01 / Due to a change in Arcane Technologies' direction, as of 1st
> May 2001, Magician will no longer be offered for download or purchase.
> So now is your last chance to check it out!   Magician lets programmers
> write portable Java code that seamlessly uses existing native OpenGL
> libraries to provide high-performance rendering over a variety of
> platforms. Magician currently supports Java-2 on Windows
> 95/98/NT/ME/2000, Linux/x86, Linux/PPC, Irix, SPARC/Solaris,
> Intel/Solaris, AIX, OS/2, MacOS and MacOS X.'
>
> It's a perfect example of how closed-source software can be trusted. A
> company may just decide to discontinue the product and users are left
> out in the dark. Of course you can buy source code if you 'Require
> security in case Arcane discontinues *Magician*' or 'Wish to tightly
> integrate *Magician* with their applications' for a mere '5000 GBP
> (approximately US $7000)'. Are thay saying that Magician couldn't be
> ever 'tightly integrated' with an application or always was an insecure
> solution? :-)
>
> Long live GL4J!
> Max

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Re: [gl4java-usergroup] Dynamic loading of fn's

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

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On Sunday 08 April 2001 02:58, Steven Hugg wrote:
> I have a question... if I call a function that hasn't yet been called in
> my program inside of a glBegin()..glEnd() pair, won't that cause havoc?
> My theory is that it is the cause of all those spurious GLContext
> exceptions everyone has been experiencing, because you're limited to a
> very specific set of commands inside glBegin..glEnd.
>
> _______________________________________________
> gl4java-usergroup mailing list
> gl4...@li...
> http://lists.sourceforge.net/lists/listinfo/gl4java-usergroup

sorry, i do not understand ..

but, please read: GL4Java/README-Version-2-5-2.txt

You have to encapsulate your OpenGL calls within
                        GLContext.gljMakeCurrent
                                        <your render code>
                        GLContext.gljFree

thats it ..

cheers, sven
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Re: [gl4java-usergroup] problem upgrading 2.4->2.7: linux cannot access libglx.so

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

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On Monday 09 April 2001 00:11, noisebrain wrote:
> Hello,
>
> I just upgraded from 2.4 to 2.7, and my application (which ran ok
> before) now gets the error(?)
>  GLINFO: cannot access GLX library libglx.so directly ...
>  GLINFO: loaded OpenGL library libGL.so!
>  GLINFO: loaded GLU    library libGLU.so!
>  fetched GL/GLU functions succesfully !
>
> It displays the interface and draws the opengl image once,
> but then the interface is frozen.
>
> This is on linux RH6.1 kernel 2.2 with Mesa 3.1 and java 1.3.0_02
> (also tried the 1.3.1 beta).
>
> Thanks for any suggestions.
>
>

please read the file: GL4Java/README-Version-2-5-2.txt

to check the sources, i have put some shell script within GL4Java/demos:
	GL4JavaCheckGluNew.sh
		checks if gluNew* functions are used ..

	GL4JavaCheckMakeCurrentFree.sh
		checks if the number of MakeCurrent and Free is even ..

cheers, sven

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[gl4java-usergroup] GL4Java Version 2.7.1

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

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OpenGL for Java Version 2.7.1
==============================

http://www.jausoft.com/gl4java/

Version 2.7.1 supports some new features
and simplifications:

        o Added a check for NULL Pointer.
          If the native GL/GLU function pointer are zero (may not exist),
          the jni wrapper function just return a dummy zero value.
 
        o Added a "AccessController.doPrivileged" block for JVM's >= 1.2,
          within the native library loader method (gl4java.GLContext)
          and the drawable.*Factory* classes.
 
          No more extra java.policy entries are needed to run
          gl4java applet's, if:
                - using JVM >= 1.2
                - gl4java.jar is installed properly within jre/lib/ext
 
        o Added a template Installer script to run the GL4Java-Installer
          as an application using a http proxy server.
 
        o updated the *.txt files (docu), read them first, before ask ;-)

please test

well, you may want to test xmame.xgl
(http://www.jausoft.com/glmame.html) also ... )

cheers, sven
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Re: [gl4java-usergroup] GL4Java Version 2.7.0

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

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On Sunday 08 April 2001 18:40, Jiba wrote:
> Steven Hugg wrote:
> > > jawt.DLL exists in the right dir and is found by java, but a lib that
> > > jawt require cannot be found...
> > >
> > > What is exactly JAWT ? If I remember, it doesn't exist in JDK 1.1 or
> > > 1.2 => this can explain why GL4JavaJauGljJNI and GL4JavaJauGljJNI12 can
> > > be loaded (i suppose those lib are for the corresponding JDK ?).
> >
> > I think JAWT is java.awt.* native libraries moved to a DLL, so that they
> > don't penalize programs that don't use AWT.  This is a Good Thing,
> > except that it breaks GL4Java...
> >
> > JAWT is not in the path in JDK 1.3, but it is in JRE 1.3.  I copied
> > JAWT.DLL to my jdk1.3/bin directory and crossed my fingers, it seemed to
> > work.  Make sure there are no old gl4java dll's in your path.
>
> You're true, JRE works well !!!!!! It must be a strange bug in the jDK ?
>
> Thanks a lot !
>

Well, this information (and others regarding the new GL4Java),
is described allready within:
	README-Version-2-5-2.txt

cheers, sven

>
> A11W

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[gl4java-usergroup] problem upgrading 2.4->2.7: linux cannot access libglx.so

[noisebrain <zi...@id...>]

Hello,

I just upgraded from 2.4 to 2.7, and my application (which ran ok
before) now gets the error(?)
 GLINFO: cannot access GLX library libglx.so directly ...
 GLINFO: loaded OpenGL library libGL.so!
 GLINFO: loaded GLU    library libGLU.so!
 fetched GL/GLU functions succesfully !

It displays the interface and draws the opengl image once,
but then the interface is frozen.

This is on linux RH6.1 kernel 2.2 with Mesa 3.1 and java 1.3.0_02
(also tried the 1.3.1 beta).

Thanks for any suggestions.

[gl4java-usergroup] GL4Java Installer

[Jiba <a1...@So...>]

Hi,

Is there a way to call the Installer from a Java application ?

A11W

Re: [gl4java-usergroup] GL4Java Version 2.7.0

[Jiba <a1...@So...>]

Steven Hugg wrote:
> 
> >
> > jawt.DLL exists in the right dir and is found by java, but a lib that
> > jawt require cannot be found...
> >
> > What is exactly JAWT ? If I remember, it doesn't exist in JDK 1.1 or 1.2
> > => this can explain why GL4JavaJauGljJNI and GL4JavaJauGljJNI12 can be
> > loaded (i suppose those lib are for the corresponding JDK ?).
> 
> I think JAWT is java.awt.* native libraries moved to a DLL, so that they
> don't penalize programs that don't use AWT.  This is a Good Thing,
> except that it breaks GL4Java...
> 
> JAWT is not in the path in JDK 1.3, but it is in JRE 1.3.  I copied
> JAWT.DLL to my jdk1.3/bin directory and crossed my fingers, it seemed to
> work.  Make sure there are no old gl4java dll's in your path.

You're true, JRE works well !!!!!! It must be a strange bug in the jDK ?

Thanks a lot !

> _______________________________________________
> gl4java-usergroup mailing list
> gl4...@li...
> http://lists.sourceforge.net/lists/listinfo/gl4java-usergroup

A11W

[gl4java-usergroup] Dynamic loading of fn's

[Steven H. <hu...@fa...>]

I have a question... if I call a function that hasn't yet been called in
my program inside of a glBegin()..glEnd() pair, won't that cause havoc? 
My theory is that it is the cause of all those spurious GLContext
exceptions everyone has been experiencing, because you're limited to a
very specific set of commands inside glBegin..glEnd.

Re: [gl4java-usergroup] GL4Java Version 2.7.0

[Steven H. <hu...@fa...>]

> 
> jawt.DLL exists in the right dir and is found by java, but a lib that
> jawt require cannot be found...
> 
> What is exactly JAWT ? If I remember, it doesn't exist in JDK 1.1 or 1.2
> => this can explain why GL4JavaJauGljJNI and GL4JavaJauGljJNI12 can be
> loaded (i suppose those lib are for the corresponding JDK ?).

I think JAWT is java.awt.* native libraries moved to a DLL, so that they
don't penalize programs that don't use AWT.  This is a Good Thing,
except that it breaks GL4Java...

JAWT is not in the path in JDK 1.3, but it is in JRE 1.3.  I copied
JAWT.DLL to my jdk1.3/bin directory and crossed my fingers, it seemed to
work.  Make sure there are no old gl4java dll's in your path.

Re: [gl4java-usergroup] GL4Java Version 2.7.0

[Jiba <a1...@So...>]

Sven Goethel wrote:
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Regarding new product development,
> Version 2.7.0 supports some new features
> and simplifications:
>         - usage of only one native library
>                 - one for each jvm: 1.1, 1.2, >=1.3
> 
>         - complete dynamic managment of gl/glu libraries
>                 - you can specify the gl/glu lib by
>                   passing arguments, or just by setting up
>                   environment variables ..
> 
>         - debugged x11 fall back mechanism
> 
>         - modularised opengl/glu, glx and wgl tools
>                 - dispatching dynamic gl/glu library linkage
>                 - handling of OS depended glx, wgl, ..
>                 - tested within gl4java and xmame.xgl
> 
> please test

I've tried it with Arkanae :

 - Under Linux it's OK,

 - Under windows, there is still the same problem : the
GL4JavaJauGljJNI13 lib refuse to load, because another lib is missing...

I wonder if the problem may come from JAWT : under window, i've tried to
load (with System.loadLibrary()) the following lib :

GL4JavaJauGljJNI13
 => crash (another lib is missing)

GL4JavaJauGljJNI,
GL4JavaJauGljJNI12
 => OK

jawt
 => crash (another lib is missing)

other lib in .\jdk1.3\jre\lib (java, hpi, ...)
 => OK


jawt.DLL exists in the right dir and is found by java, but a lib that
jawt require cannot be found...

What is exactly JAWT ? If I remember, it doesn't exist in JDK 1.1 or 1.2
=> this can explain why GL4JavaJauGljJNI and GL4JavaJauGljJNI12 can be
loaded (i suppose those lib are for the corresponding JDK ?).

> well, you may want to test xmame.xgl
> (http://www.jausoft.com/glmame.html) also, .. just a sec ;-)
> 
> cheers, sven
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A11W

[gl4java-usergroup] Magician discontinued [from will-be-revived-again-or-finally-die-this-time dept.]

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

Hello!

www.opengl.org says:

'Magician OpenGL for Java only available until May 1, 2001 
<http://www.arcana.co.uk>
/04/04/01 / Due to a change in Arcane Technologies' direction, as of 1st 
May 2001, Magician will no longer be offered for download or purchase.  
So now is your last chance to check it out!   Magician lets programmers  
write portable Java code that seamlessly uses existing native OpenGL 
libraries to provide high-performance rendering over a variety of 
platforms. Magician currently supports Java-2 on Windows 
95/98/NT/ME/2000, Linux/x86, Linux/PPC, Irix, SPARC/Solaris, 
Intel/Solaris, AIX, OS/2, MacOS and MacOS X.'

It's a perfect example of how closed-source software can be trusted. A 
company may just decide to discontinue the product and users are left 
out in the dark. Of course you can buy source code if you 'Require 
security in case Arcane discontinues *Magician*' or 'Wish to tightly 
integrate *Magician* with their applications' for a mere '5000 GBP 
(approximately US $7000)'. Are thay saying that Magician couldn't be 
ever 'tightly integrated' with an application or always was an insecure 
solution? :-)

Long live GL4J!
Max


-- 
-----------------------------------------------------------
-- Max Gilead --- gi...@li...                       --
--        XMage library --- http://xmage.sourceforge.net --
-----------------------------------------------------------
-- Any system that depends on reliability is unreliable. --
--                         --- Nogg's postulate          --

[gl4java-usergroup] GL4Java Version 2.7.0

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

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Regarding new product development,
Version 2.7.0 supports some new features
and simplifications:
	- usage of only one native library
		- one for each jvm: 1.1, 1.2, >=1.3	

	- complete dynamic managment of gl/glu libraries
		- you can specify the gl/glu lib by
		  passing arguments, or just by setting up
		  environment variables ..

	- debugged x11 fall back mechanism

	- modularised opengl/glu, glx and wgl tools
		- dispatching dynamic gl/glu library linkage
		- handling of OS depended glx, wgl, .. 
		- tested within gl4java and xmame.xgl

please test

well, you may want to test xmame.xgl 
(http://www.jausoft.com/glmame.html) also, .. just a sec ;-)

cheers, sven
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Re: [gl4java-usergroup] RE: Developing w/ GL4Java on Windows

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

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On Thursday 05 April 2001 13:53, Jiba wrote:
> Jan Fischer wrote:
> > Sorry, can't find the library: GL4JavaJauGljJNI13
> > java.lang.UnsatisfiedLinkError: C:\Program
> > Files\JBuilder4\jdk1.3\jre\bin\GL4JavaJauGljJNI13.dll: One of the
> > library files needed to run this application cannot be found
>
> I've the same problem...
>
> I think this error message doesn't want to say that
> GL4JavaJauGljJNI13.dll was not found.
> It's rather another lib that is used by GL4JavaJauGljJNI13.dll, and that
> cannot be found.
>
> > GLCanvas could not load def. native libs.
>
> A11W
>

well, have a look what i have brought :-)

version 2.7.0 only uses _one_ native library,
_and_ the gl/gl/[wgl|glx] stuff is complete loaded at runtime dynamically !
(you can switch the gl/glu libs by argument or environment variable)

so .. just give it a try.

cheers, sven
 
>
> _______________________________________________
> gl4java-usergroup mailing list
> gl4...@li...
> http://lists.sourceforge.net/lists/listinfo/gl4java-usergroup

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Re: [gl4java-usergroup] RE: Developing w/ GL4Java on Windows

[Jiba <a1...@So...>]

Jan Fischer wrote:
> Sorry, can't find the library: GL4JavaJauGljJNI13
> java.lang.UnsatisfiedLinkError: C:\Program
> Files\JBuilder4\jdk1.3\jre\bin\GL4JavaJauGljJNI13.dll: One of the
> library files needed to run this application cannot be found

I've the same problem...

I think this error message doesn't want to say that
GL4JavaJauGljJNI13.dll was not found.
It's rather another lib that is used by GL4JavaJauGljJNI13.dll, and that
cannot be found.



> GLCanvas could not load def. native libs.

A11W

[gl4java-usergroup] Reshape method never called

[Jan F. <jan...@st...>]

Hi!

Why is my reshape method never called for this GLJPanel, even if the
window is resized?
I'm using GL4Java 2.5.0.

---------------------------------------------------

class GLScreen extends GLJPanel {
  public void init() {
    gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
    gl.glDisableClientState(GL_CULL_FACE);
    gl.glDisable(GL_DEPTH_TEST);
  }

  public void display() {
    gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    gl.glMatrixMode(GL_MODELVIEW);
    gl.glLoadIdentity();

    gl.glBegin(GL_POLYGON);
      gl.glColor3d(1.0, 1.0, 1.0);
      gl.glVertex3d(-0.5, -0.5, 0.0);
      gl.glColor3d(0.0, 1.0, 1.0);
      gl.glVertex3d( 0.5, -0.5, 0.0);
      gl.glColor3d(1.0, 0.0, 0.0);
      gl.glVertex3d(0.0, 0.5, 0.0);
    gl.glEnd();
  }

  public void reshape(int width, int height) {
    gl.glViewport(0, 0, width - 1, height - 1);
    gl.glMatrixMode(GL_PROJECTION);
    gl.glLoadIdentity();
    if(width > height) {
      glu.gluOrtho2D(-(double)width/height, (double)width/height, -1.0,
1.0);
    } else {
      glu.gluOrtho2D(-1.0, 1.0, -(double)height/width,
(double)height/width);
    }
  }

  public GLScreen() {
    super();
  }
}

public class MainWindow extends JFrame implements ActionListener {

  public MainWindow() {
    Container content = getContentPane();
    GLScreen myGLScreen = new GLScreen();

    content.add("Center", myGLScreen);

    setSize(600, 500);
    setTitle("Simple Java OpenGL Application");
    setVisible(true);
  }

  public void actionPerformed(ActionEvent event) {
  }

  protected void processWindowEvent(WindowEvent event) {
    super.processWindowEvent(event);
    if (event.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  public static void main(String[] args) {
    MainWindow theWindow = new MainWindow();
  }
}

---------------------------------------------------

Jan

[gl4java-usergroup] applet AccessControlException

[fluffy d. <cry...@ya...>]

Hello,

On linux I'm trying to run 'appletviewer moth.html' 
(one of the demos) and am getting this error.

java.lang.ExceptionInInitializerError:
java.security.AccessControlException: access denied
(java.lang.RuntimePermission
loadLibrary.GL4JavaJauGljJNI12)

I tried adding to the jre/lib/security/java.policy
file
lines such as this:
 grant codeBase "file:/usr/lib/*" {
 	permission java.security.AllPermission;
 };
naming both the local directories where I have moth.*
and the system directories where gl4java (both .jar
and the so's) are installed.

gl4java *IS* working on my machine- it works in
applications, just not applets.

I'm using jdk1.3.

frustrating.


I searched the 'geocrawler' gl4java usergroup archive
and found nothing on 'AccessControlException'



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[gl4java-usergroup] Need version 2.6.0.1 fo MacOS X port of gl4java

[gerard z. <gzi...@ap...>]

hi guys,

I need version 2.6.0.1 of my MacOS X port of gl4java.

Can someone, if you have it, email it to me please?

tia


---
gerard ziemski
gzi...@ma...
http://www.gerardziemski.com

[gl4java-usergroup] BombWar ? Gerard ?

[gerard z. <gzi...@ma...>]

That was a fun little experiment that really helped me learn OpenGL 
basics. No way I'm bringing it back, however, I'd be embarrassed to look 
at the source code now ;-)

cheers


On Monday, April 2, 2001, at 01:50 PM, gl4java-usergroup-
re...@li... wrote:

> Yo Gerard,
>
> how about your game BombWar ?
>
> would be nice to bring it back alive ..



---
gerard ziemski
gzi...@ma...
http://www.gerardziemski.com

[gl4java-usergroup] nVidia and MacOS X port of gl4java

[gerard z. <gzi...@ma...>]

Turns out nVidia drivers for MacOS X don't support auxiliary buffers 
yet. Changed the pixel format to accommodate that requirement and 
gl4java is now accelerated with nVidia graphics card (really need to 
finish up the gl4java port, if i did this would have never happened ;-)

You can find updated gl4java here 
<http://www.gerardziemski.com/files.html>


cheers


On Monday, April 2, 2001, at 01:50 PM, gl4java-usergroup-
re...@li... wrote:

> But I've got a question. In my simple programs and in the demos, I'm
> pretty sure it's not using any hardware acceleration.  The framerate is
> really slow, fogging is not working, and GL RENDERER reports as 
> "Generic".
> Is there anything special I have to do to get this to run in accelerated
> mode?
>
> I've got a G4 with an nVidia card.


---
gerard ziemski
gzi...@ma...
http://www.gerardziemski.com

[gl4java-usergroup] ASE importer.

[aNt <an...@to...>]

has anyone ever made a ASE file loader object (with textures) ? give u a
kiss if u pop it up someplace.


aNt

[gl4java-usergroup] BombWar ? Gerard ?

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

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Yo Gerard,

how about your game BombWar ?

would be nice to bring it back alive ..

cheers, sven
- -- 
mailto:sgo...@ja...
www   : http://www.jausoft.com ; pgp: http://www.jausoft.com/gpg/
voice : +49-521-2399440; fax: +49-521-2399442; icq-uin: 108264795
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