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  Using JOGL with QtJambi  (Read 3313 times)
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Offline Suisei

Junior Newbie


Exp: 7 years



« Posted 2016-12-20 17:15:29 »

Hi !

I’m trying to use JOGL with QtJambi. I’m using code I found in tutorials (some of them are very old) and forums but nothing is displayed. The QGLWidget initialization prevents the window to be displayed.
I have no error in the console. The program is running, but there is no window.

Is there something I’m doing wrong ?

Here is my code.

The GLWidget

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public class QtJOGLTestGLWidget extends QGLWidget
{
   protected GLContext context;
   protected GL gl;
   
   public QtJOGLTestGLWidget()
   {
      this(null);
   }
   
   public QtJOGLTestGLWidget(QWidget parent)
   {
      super(parent);
   }
   
   @Override
   protected void initializeGL()
   {
      GLProfile profile = GLProfile.get(GLProfile.GL2);
      GLCapabilities glCaps = new GLCapabilities(profile);
      glCaps.setPBuffer(true);
      GLDrawableFactory factory = GLDrawableFactory.getFactory(profile);
      this.context = factory.createExternalGLContext();
      this.gl = this.context.getGL();
   }
   
   @Override
   protected void resizeGL(int w, int h)
   {
      GL2 gl2 = this.gl.getGL2();
      gl2.glViewport(0, 0, w, h);
      gl2.glMatrixMode(GL2.GL_PROJECTION);
      float r = 3.0f / 2.0f;
      gl2.glLoadIdentity();
      gl2.glFrustum(-0.2, 1 * r, -0.2, 1.2, 1, 2000);
   }
   
   @Override
    protected void paintGL()
    {
      GL2 gl2 = this.gl.getGL2();
     
      gl2.glMatrixMode(GL2.GL_MODELVIEW);
      gl2.glLoadIdentity();

      gl2.glBegin(GL.GL_TRIANGLES);
      {
          gl2.glColor3f(1, 0, 0);
          gl2.glVertex3f(0, 0, -1);
          gl2.glColor3f(0, 1, 0);
          gl2.glVertex3f(0, 1, -1);
          gl2.glColor3f(0, 0, 1);
          gl2.glVertex3f(1, 0, -1);
      }
      gl2.glEnd();
    }
}


The window

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public class QtJOGLTestFrame extends QMainWindow
{
   protected QtJOGLTestGLWidget glWidget;
   protected QGridLayout gridLayout;
   
   public QtJOGLTestFrame()
   {
      this.gridLayout = new QGridLayout();
      this.glWidget = new QtJOGLTestGLWidget(this); // This line prevents the window to be displayed
      this.gridLayout.addWidget(this.glWidget, 0, 0);
     
      QWidget widget = new QWidget();
      widget.setLayout(this.gridLayout);
      this.setCentralWidget(widget);
      this.setWindowTitle("Hello JOGL");
   }
}


Main

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public class QtJOGLTest
{
   
   public static void main(String[] args)
   {
      QApplication.initialize(args);
      QtJOGLTestFrame frame = new QtJOGLTestFrame();
      frame.resize(800, 600);
      frame.show();
      QApplication.execStatic();
   }
   
}


I updated the jogamp .jar today and all my other programs using JOGL with swing work well.

Thank you in advance.  Smiley
Offline gouessej
« Reply #1 - Posted 2016-12-27 16:16:31 »

Hi

The questions specific to JOGL should be asked on the official JogAmp forum.

Julien Gouesse | Personal blog | Website | Jogamp
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