But if you're really set on using the d3d pipeline,
here's another alternative, which may only work
on jdk6 and earlier releases.
1. set -Dsun.java2d.allowrastersteal=true
set -Dsun.java2d.accthreshold=0
set -Dsun.java2d.d3d=true (or for earlier
releases, -Dsun.java2d.translaccel=true)
2. modify your BufferedImage's raster directly
as you were doing before with new data, but
after each frame do a 1x1 fillRect() with
translucent color to that buffered image
to let us know that we need to update the
cached version
3. copy (stretch) the BufferedImage to the backbuffer
I would advise against doing all this, though.
Do try using the OpenGL pipeline and let us know
if there's something wrong..
Thanks,
Dmitri
Dmitri Trembovetski wrote:
OK, I've checked and it appears that we don't use the
DirectDraw scale loops for Bilinear filtering,
presumably because we can't control the filtering
algorithm when doing a DirectDraw stretch Blit.
The OpenGL pipeline handles it just fine, though.
As well as the upcoming Direct3D 9 -based pipeline.
Thanks,
Dmitri
[EMAIL PROTECTED] wrote:
Thanks for the reply. I've tried using the Volatile Images (which
seems to be the right approach as suggested by you and also in
previous posts). However, the scaling the backbuffer is for some
reason painfully slow. It takes 4 seconds for a frame, instead of the
40ms with software based scaling. The following short snipped
reproduces the problem (justs scales a red square):
private static JFrame frame;
private static JPanel panel;
private static VolatileImage dummyImage;
private static Graphics dummyGraphics;
public static void main(String[] args) throws InterruptedException {
frame = new JFrame("...");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
panel = new JPanel() {
public void paintComponent(Graphics g) {
if (dummyImage != null) {
dummyGraphics.setColor(Color.RED);
dummyGraphics.fillRect(700, 350, 100,
100);
((Graphics2D)
g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
long s = System.nanoTime();
g.drawImage(dummyImage, 0, 0, 1600,
900, 0, 0, 800, 450, null);
System.out.println((System.nanoTime()
- s) / 1000000);
System.out.println(dummyImage.getCapabilities().isAccelerated() + " "
+ ((Graphics2D)
g).getDeviceConfiguration().getImageCapabilities().isAccelerated());
}
}
};
frame.add(panel);
frame.setSize(1700, 1000);
GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsConfiguration gc =
ge.getDefaultScreenDevice().getDefaultConfiguration();
dummyImage = gc.createCompatibleVolatileImage(800, 450,
Transparency.OPAQUE);
dummyGraphics = dummyImage.getGraphics();
System.out.println(dummyImage.validate(gc));
System.out.println(dummyImage.validate(gc));
frame.setVisible(true);
Thread.sleep(4000);
for (int i = 0; i < 1000; i++) {
Thread.sleep(100);
frame.repaint();
}
}
The console output is:
Direct3D pipeline enabled on screen 0
1
0
4120
true true
4113
true true
4112
true true
3 calls to sun.java2d.windows.DDBlitLoops::Blit("Integer RGB
DirectDraw", SrcNoEa, "Integer RGB DirectDraw")
10 calls to D3DFillRect
3 calls to sun.java2d.loops.TransformHelper::TransformHelper(IntRgb,
SrcNoEa, IntArgbPre)
16 total calls to 3 different primitives
The VM params are:
-Dsun.java2d.d3d=True -Dsun.java2d.ddscale=true -Dsun.java2d.trace=count
It is the same result with the two PCs mentioned in the previous post.
Only way I can think of that it gets that slow is that the images are
kept in the video buffer but for some reason scaling is still done in
software. Any ideas of what is wrong? Am I missing something?
Thanks, Remo
[Message sent by forum member 'remmeier' (remmeier)]
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