On Apr 30, 2005, at 8:05 AM, Sean Luke wrote:
On Apr 30, 2005, at 10:26 AM, Dmitry Markman wrote:
we have very complex molecular dynamic simulations
and I can not see any thing close to 10% of 1.3.1 slowness
Java 1.4.2 is very _very_ slow at drawing.
Well look at the following results when using the attached code
which draws 1 million lines (times in milliseconds)...
(PM G5 Dual 2GHz, 6800 GT with 256MB, and dual 23" displays running
at 1920x1200x32)
With Quartz 2D Extreme disabled (the default for 10.4)...
[Session started at 2005-04-30 11:12:40 -0700.]
Java Version:1.4.2_07
OS Version:10.4
8899
8499
8688
8914
With Quartz 2D Extreme enabled...
[Session started at 2005-04-30 11:13:46 -0700.]
Java Version:1.4.2_07
OS Version:10.4
466
308
308
316
311
Note I modified your original code to move the random number
calculation used to pick points to outside of the drawing loop
which is being measured. Also I commented out all of you hint, etc.
stuff.
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
public class TestJavaDraw
{
public static void main(String[] args)
{
//System.setProperty("com.apple.hwaccel","true");
System.out.println("Java Version:" + System.getProperty
("java.version"));
System.out.println("OS Version:" + System.getProperty
("os.version"));
final JFrame f = new JFrame("Example");
f.setSize(400,400);
JButton b = new JButton("Press Me");
f.getContentPane().add(b,BorderLayout.NORTH);
f.show();
b.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
Random r = new Random();
Graphics2D g = (Graphics2D)(f.getContentPane
().getGraphics());
//RenderingHints hints = new RenderingHints
(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
//hints.put
(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_N
EAREST_NEIGHBOR);
//hints.put(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
//hints.put(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
//hints.put
(RenderingHints.KEY_ALPHA_INTERPOLATION,RenderingHints.VALUE_ALPHA_INT
ERPOLATION_SPEED);
//g.setRenderingHints(hints);
g.setColor(new Color(r.nextInt(256),r.nextInt
(256),r.nextInt(256)));
int lineCount = 1000000;
int pointCount = lineCount * 4;
int[] points = new int[pointCount];
for(int i=0; i < pointCount; i++) {
points[i] = r.nextInt(400);
}
long l = System.currentTimeMillis();
for(int x=0; x<lineCount; x+=4) {
g.drawLine(points[x], points[x+1], points[x+2],
points[x+3]);
}
System.out.println(System.currentTimeMillis() - l);
}
});
}
}
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