Posted by r.jaoui on Oct 26, 2021; 12:16pm
URL: https://forum.jogamp.org/JOGL-project-does-not-work-in-a-different-computer-tp4041404.html

Hello !

I'm having what seems to be a very basic problem with JOGL : my projects are built in Eclipse, and in the computer I usually work in they run normally, but on another one, some functions can't seem to be found. For instance, here is the simple code that I try to run :

//Main.java
package basic;

public class Main {

        public static void main(String[] args) {
                @SuppressWarnings("unused")
                Frame frame = new Frame(1280, 720);
        }
}

//Frame.java
package basic;

import javax.swing.JFrame;

import com.jogamp.opengl.GLCapabilities;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.awt.GLJPanel;

public class Frame extends JFrame{
       
        private static final long serialVersionUID = 1L;
       
        public static GLProfile PROFILE;
        public static GLCapabilities CAPABILITIES;
        public static GLJPanel panel;
        public static PanelListener listener;
       
        public Frame(int width, int height) {
                super();

                PROFILE = GLProfile.get(GLProfile.GL2);
                CAPABILITIES = new GLCapabilities(PROFILE);
               
                CAPABILITIES.setSampleBuffers(true);
                CAPABILITIES.setNumSamples(8);
                CAPABILITIES.setStencilBits(8);
                CAPABILITIES.setDoubleBuffered(true);
                CAPABILITIES.setPBuffer(true);
               
                panel = new GLJPanel(CAPABILITIES);
                listener = new PanelListener(panel);
                panel.addGLEventListener(listener);
               
                this.setContentPane(panel);
               
                this.setVisible(true);
                this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                this.setSize(width, height);
               
                run();
        }
       
        public void run() {
                while(true) {
                       
                        panel.display();
                       
                        try {Thread.sleep(1);}
                        catch (InterruptedException e) {e.printStackTrace();}
                }
        }
}

//PanelListener.java
package basic;

import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.awt.GLJPanel;

public class PanelListener implements GLEventListener{

        GLJPanel panel;
        GL2 gl;
       
        public PanelListener(GLJPanel panel) {
                super();
                this.panel = panel;
        }
       
        @Override
        public void display(GLAutoDrawable arg0) {
               
        }

        @Override
        public void dispose(GLAutoDrawable arg0) {
               
        }

        @Override
        public void init(GLAutoDrawable arg0) {
                if(gl == null) gl = this.panel.getGL().getGL2();

        gl.glEnable(GL2.GL_LINE_SMOOTH);
        gl.glEnable(GL2.GL_POINT_SMOOTH);
        gl.glEnable(GL2.GL_SMOOTH);
        gl.glEnable(GL.GL_MULTISAMPLE);
       
                gl.glHint(GL2.GL_LINE_SMOOTH_HINT, GL2.GL_NICEST);
                gl.glHint(GL2.GL_POINT_SMOOTH_HINT, GL2.GL_NICEST);
               
        gl.glEnable(GL2.GL_BLEND);
        gl.glBlendFuncSeparate(GL2.GL_SRC_ALPHA, GL2.GL_ONE_MINUS_SRC_ALPHA, GL2.GL_ONE, GL2.GL_ONE);
               
                gl.glClearColor(0, 0, 0, 0);
                gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
               
                gl.glBegin(GL2.GL_TRIANGLE_STRIP);
                gl.glVertex2f(-0.5f, 0f);
                gl.glVertex2f(0f, 0.5f);
                gl.glVertex2f(0f, -0.5f);
                gl.glEnd();
        }

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

And I'm getting this error :
Exception in thread "AWT-EventQueue-0" com.jogamp.opengl.GLException: Caught GLException: Method "glBlendFuncSeparate" not available on thread AWT-EventQueue-0

If I comment out the glBlendFuncSeparate call, the program runs and I do get my white triangle as expected. This is of course just an example but in more complex projects, a bunch of calls have this behaviour.

Note that on the build path of the project, I have jogl-all.jar, glugen-rt.jar as well as the corresponding Windows natives.

Any help ?
Thanks !