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Re: Subject: JDK 5: No acceleration?

Subject: Re: Subject: JDK 5: No acceleration?
From: Shawn Erickson <email@hidden>
Date: Sat, 30 Apr 2005 11:20:11 -0700
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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_NEA REST_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_INTER POLATION_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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Follow-Ups:
- Re: Subject: JDK 5: No acceleration?
  - From: Dmitry Markman <email@hidden>
- Re: Subject: JDK 5: No acceleration?
  - From: Shawn Erickson <email@hidden>

References:
	>Subject: JDK 5: No acceleration? (From: Sean Luke <email@hidden>)
	>Re: Subject: JDK 5: No acceleration? (From: Dmitry Markman <email@hidden>)
	>Re: Subject: JDK 5: No acceleration? (From: Sean Luke <email@hidden>)

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