Active rendering with JOGL

[DzzD]

NB: this post is due to a question in JOGL board, as it is a shared code, I thought it should be good to post it here too

This explain a simple way to make active rendering with JOGL without GLEventListener

Render class:

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import java.awt.*; import java.awt.event.*; import javax.media.opengl.*; import javax.media.opengl.glu.*; public final class RenderJOGL {      private GLContext context;    private GLCanvas canvas;    private GL gl;    private GLU glu;    public Canvas getCanvas()    {       return this.canvas;    }        public RenderJOGL() throws Throwable    {       GLCapabilities glCaps = new GLCapabilities();         glCaps.setRedBits(8);       glCaps.setBlueBits(8);       glCaps.setGreenBits(8);       glCaps.setAlphaBits(8);       glCaps.setDoubleBuffered(true);       glCaps.setHardwareAccelerated(true);       this.canvas = new GLCanvas(glCaps);       this.canvas.setAutoSwapBufferMode(false);       this.glu=new GLU();       this.context=this.canvas.getContext();       this.gl = this.context.getGL();    }        public void setSize(int viewPixelWidth,int viewPixelHeight)//,int maxAntialias)   {       this.canvas.setSize(viewPixelWidth,viewPixelHeight);    }              public void render()    {         this.makeContentCurrent();       this.gl.glDisable(GL.GL_DEPTH_TEST);       gl.glClearColor(0.0f,0.0f,1.0f,0.0f);   //Background blue              gl.glClear(GL.GL_COLOR_BUFFER_BIT);               gl.glLoadIdentity();                 gl.glColor3f(1.0f, 0.0f, 0.0f);   //Color red              gl.glBegin(GL.GL_TRIANGLES);               gl.glVertex3f(0,0,0.0f);               gl.glVertex3f(1,0,0.0f);               gl.glVertex3f(0,1,0.0f);                       gl.glEnd();                 this.context.release();       this.canvas.swapBuffers();    }        private void makeContentCurrent()    {         try       {          while (context.makeCurrent() == GLContext.CONTEXT_NOT_CURRENT)          {             System.out.println("Context not yet current...");             Thread.sleep(100);          }       }       catch (InterruptedException e)       {           e.printStackTrace();       }    }           }

AppletTest class:

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import java.awt.*; import java.applet.*; import java.io.*; import java.awt.event.*; public class AppletTest extends Applet implements Runnable {    private int nbloop;    private RenderJOGL render;        private long startTime;    private Thread process;    private int nbStart;        public void init()    {       this.nbStart=0;    }        public void start()    {       //Ensure that start is only called once      if(this.nbStart!=0)          return;       this.nbStart++;             this.render=new RenderJOGL();                   //Add Render canvas to this applet      this.setLayout(null);       Canvas canvas=this.render.getCanvas();       this.add(canvas);       this.render.setSize(this.getWidth(),this.getHeight());             //Start rendering Thread      this.process=new Thread(this);       this.process.start();    }        public void run()    {       try       {          while(true)          {             this.render.render();             Thread.sleep(10);          }       }       catch(InterruptedException ie)       {       }    }       }

EDIT: Maybe you will have some few modifications to make it works properly, as it is a Class comming from 3DzzD API, simplified for a better understanding,  so I havn't tested it....

let me know if it helps!

[gouessej]

Do you really think active rendering can improve the performance? Instead of sharing 3DzzD source code by small pieces, why don't you open the whole source code???

[DzzD]

Do you really think active rendering can improve the performance?

No, it don't think it will hugely improve performance but I found that give a better control over the rendering process.

Instead of sharing 3DzzD source code by small pieces, why don't you open the whole source code???

hey! that's exacly what I was thinking about this week !?, I dont really know the steps to do this, I mean steps to make a project opensourced in a good way ?

what I am affraid about is multiplicity of version, bugs add, and such !?

anyway, you are right I must share the whole and that what I am going to do, just need to found a good way to do that, It will be a lot better experience for user and will give a better control.

any idea to how opensourcing the whole in a good way are welcome, this is not really a world I know  ?

Games published by our own members! Check 'em out!

[gouessej]

No, it don't think it will hugely improve performance but I found that give a better control over the rendering process.

 hey! that's exacly what I was thinking about this week !?, I dont really know the steps to do this, I mean steps to make a project opensourced in a good way ?

what I am affraid about is multiplicity of version, bugs add, and such !?

anyway, you are right I must share the whole and that what I am going to do, just need to found a good way to do that, It will be a lot better experience for user and will give a better control.

any idea to how opensourcing the whole in a good way are welcome, this is not really a world I know  ?

Look at my source code, I only put the license (the complete text) in the ZIP and I put a reference to this in each file. I chose the GPL license version 2 to be sure that anyone can use my source code if he accepts to share his own source code too.

[DzzD]

Thanks, I will look on it, It may take up to two weeks for me too opensource the whole 3DzzD project as I would like to give public a clean project and because I dont work a lot on it for now as I am quite busy  .