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+/*
+ * Copyright (c) 2003 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
+ * MIDROSYSTEMS, 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.
+ *
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ *
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package demos.multisample;
+
+import java.awt.*;
+import java.awt.event.*;
+import net.java.games.jogl.*;
+
+public class Multisample {
+ private GLCanvas canvas;
+ private Animator animator;
+ private volatile boolean quit;
+
+ // Simple class to warn if results are not going to be as expected
+ static class MultisampleChooser extends DefaultGLCapabilitiesChooser {
+ public int chooseCapabilities(GLCapabilities desired,
+ GLCapabilities[] available,
+ int windowSystemRecommendedChoice) {
+ boolean anyHaveSampleBuffers = false;
+ for (int i = 0; i < available.length; i++) {
+ GLCapabilities caps = available[i];
+ if (caps != null && caps.getSampleBuffers()) {
+ anyHaveSampleBuffers = true;
+ break;
+ }
+ }
+ int selection = super.chooseCapabilities(desired, available, windowSystemRecommendedChoice);
+ if (!anyHaveSampleBuffers) {
+ System.err.println("WARNING: antialiasing will be disabled because none of the available pixel formats had it to offer");
+ } else {
+ if (!available[selection].getSampleBuffers()) {
+ System.err.println("WARNING: antialiasing will be disabled because the DefaultGLCapabilitiesChooser didn't supply it");
+ }
+ }
+ return selection;
+ }
+ }
+
+ public static void main(String[] args) {
+ new Multisample().run(args);
+ }
+
+ public void run(String[] args) {
+ GLCapabilities caps = new GLCapabilities();
+ GLCapabilitiesChooser chooser = new MultisampleChooser();
+
+ caps.setSampleBuffers(true);
+ caps.setNumSamples(4);
+ canvas = GLDrawableFactory.getFactory().createGLCanvas(caps, chooser);
+ canvas.addGLEventListener(new Listener());
+
+ Frame frame = new Frame("Full-scene antialiasing");
+ frame.setLayout(new BorderLayout());
+ canvas.setSize(512, 512);
+ frame.add(canvas, BorderLayout.CENTER);
+ frame.pack();
+ frame.show();
+ frame.setLocation(0, 0);
+ canvas.requestFocus();
+
+ frame.addWindowListener(new WindowAdapter() {
+ public void windowClosing(WindowEvent e) {
+ runExit();
+ }
+ });
+
+ // No antialiasing (for comparison)
+ caps.setSampleBuffers(false);
+ canvas = GLDrawableFactory.getFactory().createGLCanvas(caps);
+ canvas.addGLEventListener(new Listener());
+
+ frame = new Frame("No antialiasing");
+ frame.setLayout(new BorderLayout());
+ canvas.setSize(512, 512);
+ frame.add(canvas, BorderLayout.CENTER);
+ frame.pack();
+ frame.show();
+ frame.setLocation(512, 0);
+ canvas.requestFocus();
+
+ frame.addWindowListener(new WindowAdapter() {
+ public void windowClosing(WindowEvent e) {
+ runExit();
+ }
+ });
+ }
+
+ class Listener implements GLEventListener {
+ public void init(GLDrawable drawable) {
+ GL gl = drawable.getGL();
+ GLU glu = drawable.getGLU();
+
+ gl.glClearColor(0, 0, 0, 0);
+ // gl.glEnable(GL.GL_DEPTH_TEST);
+ // gl.glDepthFunc(GL.GL_LESS);
+
+ gl.glMatrixMode(GL.GL_MODELVIEW);
+ gl.glLoadIdentity();
+ gl.glMatrixMode(GL.GL_PROJECTION);
+ gl.glLoadIdentity();
+ gl.glOrtho(-1, 1, -1, 1, -1, 1);
+ }
+
+ public void display(GLDrawable drawable) {
+ GL gl = drawable.getGL();
+ GLU glu = drawable.getGLU();
+
+ gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+
+ int numSteps = 20;
+ double increment = Math.PI / numSteps;
+ double radius = 1;
+
+ gl.glBegin(GL.GL_LINES);
+ for (int i = numSteps - 1; i >= 0; i--) {
+ gl.glVertex3d(radius * Math.cos(i * increment),
+ radius * Math.sin(i * increment),
+ 0);
+ gl.glVertex3d(-1.0 * radius * Math.cos(i * increment),
+ -1.0 * radius * Math.sin(i * increment),
+ 0);
+ }
+ gl.glEnd();
+ }
+
+ // Unused routines
+ public void reshape(GLDrawable drawable, int x, int y, int width, int height) {}
+ public void displayChanged(GLDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
+ }
+
+ private void runExit() {
+ quit = true;
+ // Note: calling System.exit() synchronously inside the draw,
+ // reshape or init callbacks can lead to deadlocks on certain
+ // platforms (in particular, X11) because the JAWT's locking
+ // routines cause a global AWT lock to be grabbed. Instead run
+ // the exit routine in another thread.
+ new Thread(new Runnable() {
+ public void run() {
+ System.exit(0);
+ }
+ }).start();
+ }
+}