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+/*
+ * 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
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+
+package demos.cubefbo;
+
+import java.awt.event.*;
+import javax.media.opengl.*;
+import com.sun.opengl.util.*;
+import java.nio.*;
+
+class FBCubes implements GLEventListener, MouseListener, MouseMotionListener {
+ private static final int FBO_SIZE = 128;
+
+ public FBCubes () {
+ cubeInner = new CubeObject(false);
+ cubeMiddle = new CubeObject(true);
+ cubeOuter = new CubeObject(true);
+ fbo1 = new FBObject(FBO_SIZE, FBO_SIZE);
+ fbo2 = new FBObject(FBO_SIZE, FBO_SIZE);
+ }
+
+ public void init(GLAutoDrawable drawable) {
+ drawable.setGL(new DebugGL(drawable.getGL()));
+ GL gl = drawable.getGL();
+ fbo1.init(gl);
+ fbo2.init(gl);
+ drawable.addMouseListener(this);
+ drawable.addMouseMotionListener(this);
+ }
+
+ int x, y, width, height;
+ float motionIncr;
+ float xRot, yRot;
+
+ public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+ this.x = x;
+ this.y = y;
+ this.width = width;
+ this.height = height;
+ cubeOuter.reshape(drawable.getGL(), x, y, width, height);
+ motionIncr = 180.f / Math.max(width, height);
+ }
+
+ public void display(GLAutoDrawable drawable) {
+ // System.out.println("display");
+ GL gl = drawable.getGL();
+
+ fbo1.bind(gl);
+ cubeInner.reshape(gl, 0, 0, FBO_SIZE, FBO_SIZE);
+ cubeInner.display(gl, xRot, yRot);
+ fbo1.unbind(gl);
+
+ FBObject tex = fbo1;
+ FBObject rend = fbo2;
+
+ 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");
+ cubeOuter.reshape(gl, x, y, width, height);
+ // System.out.println("display .. p7");
+
+ 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 .. p8");
+ gl.glBindTexture(GL.GL_TEXTURE_2D, 0);
+ gl.glDisable (GL.GL_TEXTURE_2D);
+ }
+
+ public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
+ }
+
+ private boolean dragging;
+ private int lastDragX;
+ private int lastDragY;
+
+ public void mouseClicked(MouseEvent e) {}
+ public void mousePressed(MouseEvent e) {}
+ public void mouseReleased(MouseEvent e) {
+ dragging = false;
+ }
+ public void mouseEntered(MouseEvent e) {}
+ public void mouseExited(MouseEvent e) {}
+ public void mouseDragged(MouseEvent e) {
+ if (!dragging) {
+ dragging = true;
+ lastDragX = e.getX();
+ lastDragY = e.getY();
+ } else {
+ yRot += (e.getX() - lastDragX) * motionIncr;
+ xRot += (e.getY() - lastDragY) * motionIncr;
+ lastDragX = e.getX();
+ lastDragY = e.getY();
+ }
+ }
+ public void mouseMoved(MouseEvent e) {}
+
+ CubeObject cubeInner;
+ CubeObject cubeMiddle;
+ CubeObject cubeOuter;
+ FBObject fbo1;
+ FBObject fbo2;
+}
+