Java-Gaming.org    
Featured games (81)
games approved by the League of Dukes
Games in Showcase (482)
Games in Android Showcase (110)
games submitted by our members
Games in WIP (548)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  (GL)JPanel w/o GLEventListener  (Read 1628 times)
0 Members and 1 Guest are viewing this topic.
Offline Walrabe

Junior Newbie





« Posted 2008-10-19 09:53:22 »

Hello Javagaming-People,

is there a simple solution to connect OpenGL-Renderings to the JPanel Buffer? I dont want to use the GLEventListener/single-thread. I think of single-buffered OGL to double-buffered JPanel (if ogl to jpanel-(front/back)buffer-switch goes fast) or double-buffer OGL to single-buffered JPanel (if there are some advantages). Does anyone have experience with this.

I have read the sources (GLJPanel.java) but there seem to be many graca-vendor spec. "hacks" (sorry). So, before i do longtime-experiments, i ask here for some solutions (should be small & simple).

Eventually, the best aprroach is the combination of JPanel/BufferStrategy/direct OGL to JPanel-Buffer rendering?!

Thanks for your ideas! Cheers, Chris

PS: Sorry for my english...
Offline mgianota

Senior Newbie





« Reply #1 - Posted 2008-10-19 14:42:08 »

There's a reasonably simple approach called active rendering which permits you to dispense with the GLEventListener call-back method. http://fivedots.coe.psu.ac.th/~ad/jg2/ch15/jogl1v4.pdf explains the technique in detail.

--Mario
Offline Mithrandir

Senior Member




Cut from being on the bleeding edge too long


« Reply #2 - Posted 2008-10-20 01:14:28 »

Yes, it's a little tricky doing your own context management, particularly working with JOGL's lazy loading. We do this in the core of Aviatrix3D with a fair amount of success. Occasionally it falls over, particularly on OS/X, but it works.

The site for 3D Graphics information http://www.j3d.org/
Aviatrix3D JOGL Scenegraph http://aviatrix3d.j3d.org/
Programming is essentially a markup language surrounding mathematical formulae and thus, should not be patentable.
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Walrabe

Junior Newbie





« Reply #3 - Posted 2008-10-20 11:45:11 »

Following test-code doesnt work:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
73  
import java.awt.Dimension;
import javax.media.opengl.*;
import javax.swing.*;
import com.sun.opengl.impl.Java2D;

public final class Window extends JFrame {

   public Window() {
      super("Titel");

      JPanel panel = new JPanel(null);
      panel.setPreferredSize(new Dimension(640, 480));
      panel.setSize(640, 480);
      add(panel);

      Java2D.invokeWithOGLContextCurrent(panel.getGraphics(),
         new Runnable() {

            @Override
            public void run() {
               drawable =
                  GLDrawableFactory.getFactory().createExternalGLDrawable();

               context =
                  GLDrawableFactory.getFactory().createExternalGLContext();
            }

      });

      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      pack(); setResizable(false); setVisible(true);

      try {
         context.makeCurrent();
      } catch (Exception e) {
         e.printStackTrace();
      }

      GL gl = context.getGL();

      gl.glMatrixMode(GL.GL_PROJECTION); gl.glLoadIdentity();
      gl.glOrtho(-4d / 3d, 4d / 3d, -1d, 1d, 0d, 1d);

      gl.glMatrixMode(GL.GL_MODELVIEW); gl.glLoadIdentity();
      gl.glViewport(0, 0, 640, 480);

      gl.glClear(GL.GL_COLOR_BUFFER_BIT);
      gl.glRectf(-.8f, -.8f, .8f, .8f);

      gl.glFinish();

      drawable.swapBuffers(); // ?
     panel.repaint(); // ?

      context.release();
   }

   private GLDrawable drawable;
   private GLContext context;

   private static final long serialVersionUID = 0l;

   /**
    * Startet die Anwendung.
    * @param args Nicht verwendet
    */

   public static void main(String[] args) {
      java.awt.EventQueue.invokeLater(new Runnable() {
         @Override public void run() {new Window();}
      });
   }

}


Any ideas? Cheers, Chris
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

atombrot (27 views)
2014-08-19 09:29:53

Tekkerue (25 views)
2014-08-16 06:45:27

Tekkerue (23 views)
2014-08-16 06:22:17

Tekkerue (15 views)
2014-08-16 06:20:21

Tekkerue (22 views)
2014-08-16 06:12:11

Rayexar (61 views)
2014-08-11 02:49:23

BurntPizza (39 views)
2014-08-09 21:09:32

BurntPizza (31 views)
2014-08-08 02:01:56

Norakomi (37 views)
2014-08-06 19:49:38

BurntPizza (67 views)
2014-08-03 02:57:17
List of Learning Resources
by Longor1996
2014-08-16 10:40:00

List of Learning Resources
by SilverTiger
2014-08-05 19:33:27

Resources for WIP games
by CogWheelz
2014-08-01 16:20:17

Resources for WIP games
by CogWheelz
2014-08-01 16:19:50

List of Learning Resources
by SilverTiger
2014-07-31 16:29:50

List of Learning Resources
by SilverTiger
2014-07-31 16:26:06

List of Learning Resources
by SilverTiger
2014-07-31 11:54:12

HotSpot Options
by dleskov
2014-07-08 01:59:08
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!