/*
 * Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * - Redistribution of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
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 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
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 */

package demos.es1.cubefbo;

import javax.media.opengl.GL;
import javax.media.opengl.GL2ES1;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;

import com.jogamp.opengl.FBObject;
import com.jogamp.opengl.FBObject.Attachment;
import com.jogamp.opengl.FBObject.TextureAttachment;
import com.jogamp.opengl.util.glsl.fixedfunc.FixedFuncUtil;

import demos.es1.cube.Cube;

public class FBCubes implements GLEventListener {
    private static final int FBO_SIZE = 256;

    public FBCubes () {
        cubeOuter = new Cube(true, false);

        fbo1 = new FBObject();
        cubeInner = new Cube(false, true);

        // JAU cubeMiddle = new Cube(true, false);
        // JAU fbo2 = new FBObject(FBO_SIZE, FBO_SIZE);
    }

    public void init(GLAutoDrawable drawable) {
        GL2ES1 gl = FixedFuncUtil.wrapFixedFuncEmul(drawable.getGL());
        System.out.println(gl);

        fbo1.reset(gl, FBO_SIZE, FBO_SIZE);
        fbo1.attachTexture2D(gl, 0, true);
        fbo1.attachRenderbuffer(gl, Attachment.Type.DEPTH, 32);
        fbo1.unbind(gl);
        cubeInner.init(drawable);
        
        cubeOuter.init(drawable);
    }

    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
        cubeOuter.reshape(drawable, x, y, width, height);
    }

    float xRot=0f;
    float yRot=0f;

    public void rotate(float xRot, float yRot) {
        this.xRot = xRot;
        this.yRot = yRot;
    }

    public void dispose(GLAutoDrawable drawable) {
        GL2ES1 gl = drawable.getGL().getGL2ES1();
        fbo1.destroy(gl);
        fbo1=null;
        cubeInner.dispose(drawable);
        cubeInner=null;
        cubeOuter.dispose(drawable);
        cubeOuter=null;
    }

    public void display(GLAutoDrawable drawable) {
        GL2ES1 gl = drawable.getGL().getGL2ES1();

        fbo1.bind(gl);
        cubeInner.reshape(drawable, 0, 0, FBO_SIZE, FBO_SIZE);
        cubeInner.display(drawable);
        gl.glFinish();
        fbo1.unbind(gl);

        gl.glEnable (GL.GL_TEXTURE_2D);
        fbo1.use(gl, (TextureAttachment)fbo1.getColorbuffer(0));
        cubeOuter.reshape(drawable, 0, 0, drawable.getWidth(), drawable.getHeight());
        cubeOuter.display(drawable);
        fbo1.unuse(gl);
        gl.glDisable (GL.GL_TEXTURE_2D);

        // JAUFBObject tex = fbo1;
        // JAU FBObject rend = fbo2;

        /* JAU
        int MAX_ITER = 1;

        for (int i = 0; i < MAX_ITER; i++) {
            rend.bind(gl);
            gl.glEnable (gl.GL_TEXTURE_2D);
            gl.glBindTexture(gl.GL_TEXTURE_2D, tex.getTextureName()); // to use it ..
            cubeMiddle.reshape(gl, 0, 0, FBO_SIZE, FBO_SIZE);
            cubeMiddle.display(gl, xRot, yRot);
            gl.glBindTexture(gl.GL_TEXTURE_2D, 0);
            gl.glDisable (gl.GL_TEXTURE_2D);
            rend.unbind(gl);
            FBObject tmp = tex;
            tex = rend;
            rend = tmp;
        }

        //        System.out.println("display .. p6");
        gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT);
        gl.glClearColor(0, 0, 0, 1);

        gl.glEnable (gl.GL_TEXTURE_2D);
        gl.glBindTexture(gl.GL_TEXTURE_2D, tex.getTextureName()); // to use it ..
        cubeOuter.display(gl, xRot, yRot);
        //        System.out.println("display .. p7");
        gl.glBindTexture(gl.GL_TEXTURE_2D, 0);
        gl.glDisable (gl.GL_TEXTURE_2D);
        */
    }

    public void displayChanged(javax.media.opengl.GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
    }
    
    float time = 0.0f;
    Cube cubeInner=null;
    // JAU Cube cubeMiddle=null;
    Cube cubeOuter=null;
    FBObject   fbo1;
    // JAU FBObject   fbo2;
}