Test machine: Dual PowerMac G5, GeForce FX 5200, java build 1.5.0.16-b06-284
Below is a chunk of code which demonstrates a major graphics performance
regression on this machine between Java 1.4.2 and the latest Java 1.5.
It appears that the choice of Sun renderer is ignored. I have reason to
believe this is due to recent changes in 1.5; on my (Intel MacBook),
without the latest upgrade to 1.5, I've seen no regression yet. I'd
compare to the newest upgrade on the Macbook, but it's my primary
machine and I'm scared to update to this _huge_ drop in performance.
The code draws a bunch of fillrects, then prints out the time to do so.
In 1.5.0_16, it takes about 8 seconds. In 1.4.2, it takes about 4
seconds. I believe other primitives (circles, etc.) are even worse.
Stretching an image may be _much_ worse. No modifications to rendering
hints, properties, etc., appears to have any effect
Can anyone else verify this on another kind of machine? I'm hoping for
some data points before tossing the bug report into Apple's bug-reporter
black hole.
Sean
import javax.swing.*;
import java.awt.*;
public class Foo extends JComponent
{
public static void main(String[] args)
{
/* /// None of this makes any difference
System.setProperty("com.apple.hwaccel","true");
System.setProperty("com.apple.graphics.EnableQ2DX","true");
System.setProperty("com.apple.graphics.EnableDeferredUpdates",
"false");
System.setProperty("com.apple.graphics.UseQuartz","true");
*/
JFrame frame = new JFrame();
frame.getContentPane().setLayout(new BorderLayout());
final Foo foo = new Foo();
frame.getContentPane().add(foo, BorderLayout.CENTER);
frame.setSize(500,500);
frame.setVisible(true);
final Runnable blocker = new Runnable() {public void run(){}};
new Thread(new Runnable() { public void run()
{
while(true)
{
foo.repaint();
try { SwingUtilities.invokeAndWait(blocker); }
catch (Exception e) { }
}
}}).start();
}
RenderingHints hints = null;
public Foo()
{
hints = new RenderingHints(RenderingHints.KEY_RENDERING,
RenderingHints.VALUE_RENDER_SPEED);
hints.put(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
}
int b = 0;
long lastTime = System.currentTimeMillis();
public void paintComponent(Graphics g)
{
b++;
if (b >= 256)
{
long time = System.currentTimeMillis();
System.out.println(time - lastTime);
lastTime = time;
b = 0;
}
// this makes little difference
// ((Graphics2D)g).setRenderingHints(hints);
g.setColor(new Color(b,b,b));
int w = getWidth();
int h = getHeight();
for(int x=0;x<w;x+=10)
for(int y=0;y<h;y+=10)
g.fillRect(x,y,9,9);
}
}
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