Posted by Marc@56K on Jan 19, 2011; 7:20pm
URL: https://forum.jogamp.org/Multiple-Newt-Windows-crashes-since-jogl-2-0-b18-tp2289695.html

Hi,

the following code worked fine on jogl 2.0 beta 10. Now I updated to jogl-2.0-b18-windows-i586 and it crashed.

public class NewtMultiWindowBug extends Thread implements GLEventListener
{
    public static void main(String[] args)
    {
        try
        {
            for(int i=0; i<10; i++)
            {
                new NewtMultiWindowBug().start();
                //Thread.sleep(1000);                
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
    }
   
    private GLWindow window;
       
    public void run()
    {
        this.window = GLWindow.create(new GLCapabilities(GLProfile.get("GL2GL3")));
        this.window.addGLEventListener(this);    
        this.window.setVisible(true);
       
        while(true)
        {
            window.display();
        }
    }

    @Override
    public void display(GLAutoDrawable drawable)
    {
       
    }

    @Override
    public void dispose(GLAutoDrawable arg0)
    {
    }

    @Override
    public void init(GLAutoDrawable drawable)
    {      

    }

    @Override
    public void reshape(GLAutoDrawable arg0, int arg1, int arg2, int arg3, int arg4)
    {
    }
}

Each window is running in a separate thread. If I wait one second after the creation of a window it worked. Without the sleep most threads crashed with a NullPointerException:

Exception in thread "Thread-3" java.lang.NullPointerException
        at javax.media.opengl.GLProfile.getProfileMap(GLProfile.java:1493)
        at javax.media.opengl.GLProfile.get(GLProfile.java:548)
        at javax.media.opengl.GLProfile.get(GLProfile.java:555)
        at de.bht.jvr.tests.NewtMultiWindowBug.run(NewtMultiWindowBug.java:35)
...