Examples of javax.media.opengl.GLCapabilities

javax.media.opengl.GLCapabilities
Specifies a set of OpenGL capabilities that a rendering context must support, such as color depth and whether stereo is enabled. It currently contains the minimal number of routines which allow configuration on all supported window systems.

        int tileHeight = height / 12;
        int imageWidth = width;
        int imageHeight = height;


        //Caps
        GLCapabilities caps = new GLCapabilities();
        caps.setAlphaBits(8);
        caps.setDoubleBuffered(false);
        caps.setHardwareAccelerated(true);
        caps.setSampleBuffers(true);
        caps.setNumSamples(antiAliasing);


        //Buffer
        GLPbuffer pbuffer = GLDrawableFactory.getFactory().createGLPbuffer(caps, null, tileWidth, tileHeight, null);
        BufferedImage image = null;
        if (transparentBackground) {

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    protected abstract void reshape3DScene(GL gl);


    protected abstract void setCameraPosition(GL gl, GLU glu);


    protected GLCapabilities getCaps() {
        GLCapabilities caps = new GLCapabilities();
        try {
            caps.setAlphaBits(8);    //if NOT opaque
            caps.setDoubleBuffered(true);
            caps.setHardwareAccelerated(true);


            //FSAA
            int antialisaing = vizController.getVizConfig().getAntialiasing();
            if (antialisaing == 0) {
                caps.setSampleBuffers(false);
            } else if (antialisaing == 2) {
                caps.setSampleBuffers(true);
                caps.setNumSamples(2);
            } else if (antialisaing == 4) {
                caps.setSampleBuffers(true);
                caps.setNumSamples(4);
            } else if (antialisaing == 8) {
                caps.setSampleBuffers(true);
                caps.setNumSamples(8);
            } else if (antialisaing == 16) {
                caps.setSampleBuffers(true);
                caps.setNumSamples(16);
            }
        } catch (javax.media.opengl.GLException ex) {
            Exceptions.printStackTrace(ex);
        }

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public class ViewerGLCanvas extends GLCanvas {


  public ViewerGLCanvas(Data data, MessageManager messageManager, RenderOptions renderOptions) {


    super(new GLCapabilities(GLProfile.getDefault()));
    
    setSize(800, 600);
    setIgnoreRepaint(true);


    addGLEventListener(new ViewerGLEventListener(data, messageManager, renderOptions));

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    if (! factory.canCreateGLPbuffer(null, profile)) {
      throw new Error("Cannot create GLPbuffer for OpenGL output!");
    }
    
    GLCapabilities cap = new GLCapabilities(profile);
    cap.setDoubleBuffered(false);
        
    pBufferSizeX = min(canvasLimit, expectedMaxSizeX);
    pBufferSizeY = min(canvasLimit, expectedMaxSizeY);
        
    pBuffer = factory.createGLPbuffer(null,

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  public static final int INIT_HEIGHT = 600;


  private final TestbedController controller;


  public JoglPanel(final TestbedModel model, final TestbedController controller) {
    super(new GLCapabilities(GLProfile.getDefault()));
    this.controller = controller;
    setSize(600, 600);
    setPreferredSize(new Dimension(600, 600));
    setAutoSwapBufferMode(true);
    addGLEventListener(this);

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    getContentPane().setLayout(new BorderLayout());


    /* Cria um objeto GLCapabilities para especificar 
     * o n�mero de bits por pixel para RGBA
     */
    GLCapabilities glCaps = new GLCapabilities();
    glCaps.setRedBits(8);
    glCaps.setBlueBits(8);
    glCaps.setGreenBits(8);
    glCaps.setAlphaBits(8);


    /* Cria um canvas, adiciona ao frame e objeto "ouvinte" 
     * para os eventos Gl, de mouse e teclado
     */
    GLCanvas canvas = new GLCanvas(glCaps);

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            }


            // Make our GLPbuffer...
            final GLProfile profile = _capsUtil.getProfile();
            final GLDrawableFactory fac = GLDrawableFactory.getFactory(profile);
            final GLCapabilities caps = new GLCapabilities(profile);
            caps.setHardwareAccelerated(true);
            caps.setDoubleBuffered(true);
            caps.setAlphaBits(_settings.getAlphaBits());
            caps.setDepthBits(_settings.getDepthBits());
            caps.setNumSamples(_settings.getSamples());
            caps.setSampleBuffers(_settings.getSamples() != 0);
            caps.setStencilBits(_settings.getStencilBits());
            caps.setDoubleBuffered(false);
            caps.setOnscreen(false);
            caps.setPBuffer(true);
            _offscreenDrawable = fac.createOffscreenAutoDrawable(null, caps, null, _width, _height, _parentContext);
            _context = _offscreenDrawable.getContext();


            _context.makeCurrent();

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    getContentPane().setLayout(new BorderLayout());


    /* Cria um objeto GLCapabilities para especificar 
     * o n�mero de bits por pixel para RGBA
     */
    GLCapabilities glCaps = new GLCapabilities();
    glCaps.setRedBits(8);
    glCaps.setBlueBits(8);
    glCaps.setGreenBits(8);
    glCaps.setAlphaBits(8);


    /* Cria um canvas, adiciona ao frame e objeto "ouvinte" 
     * para os eventos Gl, de mouse e teclado
     */

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     * of the selected UI Component you wish to cutomize in design mode.
     * @return Returns customized GLCapabilities.
     */
    private GLCapabilities createGLCapabilites() {
        
        GLCapabilities capabilities = new GLCapabilities();
        capabilities.setHardwareAccelerated(true);


        // try to enable 2x anti aliasing - should be supported on most hardware
        capabilities.setNumSamples(2);
        capabilities.setSampleBuffers(true);
        
        return capabilities;
    }

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    //AbstractGraphicsDevice device = awtConfig.getScreen().getDevice();      // throws exception
    // Alternative: default graphics device
        AbstractGraphicsDevice device = GLDrawableFactory.getDesktopFactory().getDefaultDevice();


    // Offscreen Canvas3D's capabilites, determined in 'getBestConfiguration'
    GLCapabilities canvasCaps = (GLCapabilities)awtConfig.getChosenCapabilities();


    // For further investigations : the user's GraphicsConfigTemplate3D (not used yet)
    GraphicsConfigTemplate3D gct3D = gcInf0.getGraphicsConfigTemplate3D();




        // Assuming that the offscreen drawable will/can support the chosen GLCapabilities
      // of the offscreen Canvas3D


        final GLCapabilities offCaps = new GLCapabilities(profile);
        offCaps.copyFrom(canvasCaps);


        // double bufffering only if scene antialiasing is required/preferred and supported
        if (offCaps.getSampleBuffers() == false) {
          offCaps.setDoubleBuffered(false);
          offCaps.setNumSamples(0);
        }


        // Never stereo
        offCaps.setStereo(false);


        // Set preferred offscreen drawable : framebuffer object (FBO) or pbuffer
        offCaps.setFBO(true); // switches to pbuffer if FBO is not supported
    // caps.setPBuffer(true);


    // !! a 'null' capability chooser; JOGL doesn't call a chooser for offscreen drawable


    // If FBO : 'offDrawable' is of type javax.media.opengl.GLFBODrawable

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