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Java Game APIs & Engines / JOGL Development / Re: (GL)JPanel w/o GLEventListener
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on: 2008-10-20 13:45:11
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Following test-code doesnt work: 1
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| 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;
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override public void run() {new Window();}
});
}
} |
Any ideas? Cheers, Chris |
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Java Game APIs & Engines / JOGL Development / (GL)JPanel w/o GLEventListener
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on: 2008-10-19 11:53:22
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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...
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Java Game APIs & Engines / JOGL Development / Output disappears after 1 second
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on: 2008-10-01 13:37:12
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Hello Javagaming-People, i have some problem with Jogl on my new Ubuntu 8.04 machine. If i start the App (Jogl, JFrame, GLEventListener) the output ist for a half second the correct picture and then it disappears and only a grey window is visible. If i toggle between maximize and normal window, the output is for a very short time shown and disappears again. Under Windows the same sourcecode acts as expected. Thanks for your help! Cheers, Chris 1
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| import javax.media.opengl.*;
import javax.swing.JFrame;
public final class Main extends JFrame implements GLEventListener {
public Main() {
GLCanvas canvas = new GLCanvas();
canvas.setSize(640, 480);
canvas.addGLEventListener(this);
add(canvas);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
pack();
setVisible(true);
}
@Override
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
gl.glOrtho(-4d / 3d, 4d / 3d, -1d, 1d, 0d, 2d);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
@Override
public void display(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glRectf(-.8f, -.8f, .8f, .8f);
}
@Override
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged,
boolean deviceChanged) {}
@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int width,
int height) {}
private static final long serialVersionUID = 0l;
public static void main(String[] args) {
new Main();
}
} |
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