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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
* 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.
*
* 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 javax.media.opengl.*;
import javax.media.opengl.glu.*;
import com.sun.opengl.utils.*;
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, null, null);
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(GLAutoDrawable 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(GLAutoDrawable 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(GLAutoDrawable drawable, int x, int y, int width, int height) {}
public void displayChanged(GLAutoDrawable 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();
}
}
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