Posted by odinsbane on Sep 23, 2021; 4:37pm
URL: https://forum.jogamp.org/Unable-to-create-a-Canvas3D-because-I-cannot-get-a-GL2-context-tp4041316.html

I have a java3d program that was working great, but now I am trying to setup a new linux system and I get an error about GL2.

I have a program to query devices, and it fails with an error:

>com.jogamp.opengl.GLException: Not a GL2 implementation  
        at jogamp.opengl.es1.GLES1Impl.getGL2(GLES1Impl.java:4929)

I added a line to specifically request gl2 "GLProfile.get( GLProfile.GL2 )" and I get the following error:

>Exception in thread "main" com.jogamp.opengl.GLException: Profile GL2 is not available on X11GraphicsDevice[type .x11, connection :0, unitID 0, handle 0x0, owner false, ResourceToolkitLock[obj 0x2df6226d, isOwner false, <12ed9db6, 4ff4357f>[count 0, qsz 0, owner <NULL>]]], but: [GLProfile[GLES1/GLES1.hw], GLProfile[GLES2/GLES3.hw], GLProfile[GL2ES1/GLES1.hw], GLProfile[GL4ES3/GL4.hw], GLProfile[GL2ES2/GL4.hw], GLProfile[GL4/GL4.hw], GLProfile[GLES3/GLES3.hw], GLProfile[GL4/GL4.hw], GLProfile[GL3/GL4.hw], GLProfile[GL2GL3/GL4.hw]]
        at com.jogamp.opengl.GLProfile.get(GLProfile.java:991)

It seems my driver is not compatible with a pure GL2 context. Is there a way I can request a different context or does java3d require GL2?

The full output of the errors are here:

https://gist.github.com/odinsbane/64aebaeb9d8ff49e447967580385c8a9

The test program is below.




```
import org.jogamp.java3d.Canvas3D;
import org.jogamp.java3d.GraphicsConfigTemplate3D;
import org.jogamp.java3d.VirtualUniverse;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.GLContext;

import java.awt.*;
import java.util.Map;

public class QueryDevice {
   
  /**
   * Prints out the systems 3D capabilities.
   *
   * @param args - whatever usually comes in from the cmd line. it isn't used.
   */
  public static void main(String[] args) {
       
       
    VirtualUniverse vu = new VirtualUniverse();
    Map vuMap = vu.getProperties();

    System.out.println("version = " + vuMap.get("j3d.version"));
    System.out.println("vendor = " + vuMap.get("j3d.vendor"));
    System.out.println("specification.version = "
        + vuMap.get("j3d.specification.version"));
    System.out.println("specification.vendor = "
        + vuMap.get("j3d.specification.vendor"));
    System.out.println("renderer = " + vuMap.get("j3d.renderer") + "\n");

    GraphicsConfigTemplate3D template = new GraphicsConfigTemplate3D();

    /*
     * We need to set this to force choosing a pixel format that support the
     * canvas.
     */
    template.setStereo(template.PREFERRED);
    template.setSceneAntialiasing(template.PREFERRED);

    GraphicsConfiguration config = GraphicsEnvironment
        .getLocalGraphicsEnvironment().getDefaultScreenDevice()
        .getBestConfiguration(template);

    Canvas3D c3d = new Canvas3D(config);
   
    //System.out.println( GLProfile.get( GLProfile.GL2 )  );

    Map<?, ?> c3dMap = c3d.queryProperties();
    for(Object key: c3dMap.keySet()){
        System.out.println(key + " " + c3dMap.get(key));  
    }
  }
}
```