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/**
* This product currently only contains code developed by authors
* of specific components, as identified by the source code files.
*
* Since product implements StAX API, it has dependencies to StAX API
* classes.
*
* For additional credits (generally to people who reported problems)
* see CREDITS file.
*/
/*
Copyright (c) 2010-2011, Advanced Micro Devices, 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:
Redistributions of source code must retain the above copyright notice, this list of conditions and the following
disclaimer.
Redistributions 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 the copyright holder nor the names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
If you use the software (in whole or in part), you shall adhere to all applicable U.S., European, and other export
laws, including but not limited to the U.S. Export Administration Regulations ("EAR"), (15 C.F.R. Sections 730 through
774), and E.U. Council Regulation (EC) No 1334/2000 of 22 June 2000. Further, pursuant to Section 740.6 of the EAR,
you hereby certify that, except pursuant to a license granted by the United States Department of Commerce Bureau of
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Regulations ("EAR"), you will not (1) export, re-export or release to a national of a country in Country Groups D:1,
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*/
package com.aparapi.examples.javaonedemo;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Point;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferInt;
import java.util.List;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JPanel;
import com.aparapi.annotation.*;
import com.aparapi.Kernel;
import com.aparapi.ProfileInfo;
import com.aparapi.Range;
/**
* An example Aparapi application which displays a view of the Mandelbrot set and lets the user zoom in to a particular point.
*
* When the user clicks on the view, this example application will zoom in to the clicked point and zoom out there after.
* On GPU, additional computing units will offer a better viewing experience. On the other hand on CPU, this example
* application might suffer with sub-optimal frame refresh rate as compared to GPU.
*
* @author gfrost
*
*/
public class Mandel{
/**
* An Aparapi Kernel implementation for creating a scaled view of the mandelbrot set.
*
* @author gfrost
*
*/
public static class MandelKernel extends Kernel{
/** RGB buffer used to store the Mandelbrot image. This buffer holds (width * height) RGB values. */
final private int rgb[];
/** Mandelbrot image width. */
final private int width;
/** Mandelbrot image height. */
final private int height;
/** Maximum iterations for Mandelbrot. */
final private int maxIterations = 64;
/** Palette which maps iteration values to RGB values. */
@Constant final private int pallette[] = new int[maxIterations + 1];
/** Mutable values of scale, offsetx and offsety so that we can modify the zoom level and position of a view. */
private float scale = .0f;
private float offsetx = .0f;
private float offsety = .0f;
/**
* Initialize the Kernel.
*
* @param _width Mandelbrot image width
* @param _height Mandelbrot image height
* @param _rgb Mandelbrot image RGB buffer
* @param _pallette Mandelbrot image palette
*/
public MandelKernel(int _width, int _height, int[] _rgb) {
//Initialize palette values
for (int i = 0; i < maxIterations; i++) {
final float h = i / (float) maxIterations;
final float b = 1.0f - (h * h);
pallette[i] = Color.HSBtoRGB(h, 1f, b);
}
width = _width;
height = _height;
rgb = _rgb;
}
@Override public void run() {
/** Determine which RGB value we are going to process (0..RGB.length). */
final int gid = getGlobalId();
/** Translate the gid into an x an y value. */
final float x = ((((gid % width) * scale) - ((scale / 2) * width)) / width) + offsetx;
final float y = ((((gid / height) * scale) - ((scale / 2) * height)) / height) + offsety;
int count = 0;
float zx = x;
float zy = y;
float new_zx = 0f;
// Iterate until the algorithm converges or until maxIterations are reached.
while ((count < maxIterations) && (((zx * zx) + (zy * zy)) < 8)) {
new_zx = ((zx * zx) - (zy * zy)) + x;
zy = (2 * zx * zy) + y;
zx = new_zx;
count++;
}
// Pull the value out of the palette for this iteration count.
rgb[gid] = pallette[count];
}
public void setScaleAndOffset(float _scale, float _offsetx, float _offsety) {
offsetx = _offsetx;
offsety = _offsety;
scale = _scale;
}
}
/** User selected zoom-in point on the Mandelbrot view. */
public static volatile Point to = null;
public static int frameCount = 0;
public static long start = 0;
@SuppressWarnings("serial") public static void main(String[] _args) {
final JFrame frame = new JFrame("MandelBrot");
/** Width of Mandelbrot view. */
final int width = 768 - 64 - 32;
/** Height of Mandelbrot view. */
final int height = 768 - 64 - 32;
/** Mandelbrot image height. */
final Range range = Range.create(width * height);
/** Image for Mandelbrot view. */
final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
final BufferedImage offscreen = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// Extract the underlying RGB buffer from the image.
// Pass this to the kernel so it operates directly on the RGB buffer of the image
final int[] rgb = ((DataBufferInt) offscreen.getRaster().getDataBuffer()).getData();
final int[] imageRgb = ((DataBufferInt) image.getRaster().getDataBuffer()).getData();
// Create a Kernel passing the size, RGB buffer and the palette.
final MandelKernel kernel = new MandelKernel(width, height, rgb);
final Font font = new Font("Garamond", Font.BOLD, 100);
// Draw Mandelbrot image
final JComponent viewer = new JComponent(){
@Override public void paintComponent(Graphics g) {
g.drawImage(image, 0, 0, width, height, this);
g.setFont(font);
g.setColor(Color.WHITE);
final long now = System.currentTimeMillis();
// if (now - start > 1000) {
final double framesPerSecond = (frameCount * 1000.0) / (now - start);
g.drawString(String.format("%5.2f", framesPerSecond), 20, 100);
// generationsPerSecond.setText(String.format("%5.2f", generationsPerSecondField));
// frames++;
// }
}
};
final JPanel controlPanel = new JPanel(new FlowLayout());
frame.getContentPane().add(controlPanel, BorderLayout.SOUTH);
final String[] choices = new String[] {
// "Java Sequential",
"Java Threads",
"GPU OpenCL"
};
final JComboBox modeButton = new JComboBox(choices);
modeButton.addItemListener(new ItemListener(){
@Override public void itemStateChanged(ItemEvent e) {
final String item = (String) modeButton.getSelectedItem();
// if (item.equals(choices[2])) {
// modeButton = gpuMandelBrot;
// } else
if (item.equals(choices[0])) {
kernel.setExecutionMode(Kernel.EXECUTION_MODE.JTP);
frameCount = 0;
start = System.currentTimeMillis();
// modeButton = javaMandelBrot;
} else if (item.equals(choices[1])) {
kernel.setExecutionMode(Kernel.EXECUTION_MODE.GPU);
frameCount = 0;
start = System.currentTimeMillis();
// modeButton = javaMandelBrotMultiThread;
}
}
});
controlPanel.add(modeButton);
// Set the size of JComponent which displays Mandelbrot image
viewer.setPreferredSize(new Dimension(width, height));
final Object doorBell = new Object();
// Mouse listener which reads the user clicked zoom-in point on the Mandelbrot view
viewer.addMouseListener(new MouseAdapter(){
@Override public void mouseClicked(MouseEvent e) {
to = e.getPoint();
synchronized (doorBell) {
doorBell.notify();
}
}
});
// Swing housework to create the frame
frame.getContentPane().add(viewer, BorderLayout.CENTER);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
final float defaultScale = 3f;
// Set the default scale and offset, execute the kernel and force a repaint of the viewer.
kernel.setScaleAndOffset(defaultScale, -1f, 0f);
kernel.execute(range);
kernel.setExecutionMode(Kernel.EXECUTION_MODE.JTP);
System.arraycopy(rgb, 0, imageRgb, 0, rgb.length);
viewer.repaint();
// Window listener to dispose Kernel resources on user exit.
frame.addWindowListener(new WindowAdapter(){
@Override public void windowClosing(WindowEvent _windowEvent) {
kernel.dispose();
System.exit(0);
}
});
// Wait until the user selects a zoom-in point on the Mandelbrot view.
while (true) {
// Wait for the user to click somewhere
while (to == null) {
synchronized (doorBell) {
try {
doorBell.wait();
} catch (final InterruptedException ie) {
ie.getStackTrace();
}
}
}
float x = -1f;
float y = 0f;
float scale = defaultScale;
final float tox = ((float) (to.x - (width / 2)) / width) * scale;
final float toy = ((float) (to.y - (height / 2)) / height) * scale;
// This is how many frames we will display as we zoom in and out.
final int frames = 128;
frameCount = 0;
start = System.currentTimeMillis();
for (int sign = -1; sign < 2; sign += 2) {
for (int i = 0; i < (frames - 4); i++) {
frameCount++;
scale = scale + ((sign * defaultScale) / frames);
x = x - (sign * (tox / frames));
y = y - (sign * (toy / frames));
// Set the scale and offset, execute the kernel and force a repaint of the viewer.
kernel.setScaleAndOffset(scale, x, y);
kernel.execute(range);
final List profileInfo = kernel.getProfileInfo();
if ((profileInfo != null) && (profileInfo.size() > 0)) {
for (final ProfileInfo p : profileInfo) {
System.out.print(" " + p.getType() + " " + p.getLabel() + " " + (p.getStart() / 1000) + " .. "
+ (p.getEnd() / 1000) + " " + ((p.getEnd() - p.getStart()) / 1000) + "us");
}
System.out.println();
}
System.arraycopy(rgb, 0, imageRgb, 0, rgb.length);
viewer.repaint();
}
}
// Reset zoom-in point.
to = null;
}
}
}
