I just wanted to add, do you really need to have two _translucent_
images the size of the screen? Why not render directly to the
back-buffer?
Thanks,
Dmitri
On Thu, Apr 27, 2006 at 02:11:23PM -0700, Chet Haase wrote:
> Hi,
>
> I talked about the tearing issue in my blog entry and article
> on choppy animations:
> http://weblogs.java.net/blog/chet/archive/2006/02/make_your_anima.html
> http://today.java.net/pub/a/today/2006/02/23/smooth-moves-solutions.html
>
> You're basically running into a vertical refresh artifact.
>
> Running fullscreen with a BufferStrategy is a decent way to
> work around this; depending on the platform and the situation,
> we will usually give you a Flip strategy, which is (usually)
> synchronized with the vertical refresh of the display to avoid
> tearing.
>
> There are some things that might contribute to this not working,
> however:
> - What platform are you running on? It's possible that the
> Flip strategy on your particular platform is actually doing a
> copy behind the scenes, which would be the same as the BltBufferStrategy,
> which runs smack into the refresh artifact.
> - What pipeline are you using? The default? Are you specifying
> OpenGL? or Direct3D? What release are you using? These can
> all affect how we are implementing the buffer strategy under
> the hood.
> - The graphics operations you do to the back buffer could
> actually impact things as well; it's possible that we would
> punt the buffer to system memory in some situations because
> the operations you are doing (apart from the flip/blt) are
> faster in software. This is particularly the case for
> translucency; reading from video memory is an amazingly
> slow operation, and we do not necessarily support translucency
> through hardware on all platforms.
>
> Anyway, hopefully this helps you track things down a bit...
>
> Chet.
>
>
> [EMAIL PROTECTED] wrote:
> >I've been trying to work around an issue involving tearing during a
> >buffered rendering process in my code. Im using a buffer strategy to page
> >flip to BufferedImages to conduct a animation. The problem is that on
> >every interation of the render the square box that I render it tearing. I
> >have purchased multiple books and have visted multiple web sites on how to
> >solve the tearing problem. And I in NO MEANS want to copy or use someone
> >elses code. Pasted below is the code that I developed. Any suggestions are
> >welcome. Thanks.
> >
> >import java.awt.*;
> >import java.awt.image.*;
> >import java.awt.event.*;
> >import javax.swing.*;
> >import java.io.*;
> >import java.awt.geom.*;
> >
> >public class GameEngine implements Runnable
> >{
> >
> > private GraphicsConfiguration[] gc;
> > private GraphicsDevice gd;
> > private GraphicsEnvironment ge;
> > private DisplayMode dm;
> > private DisplayMode dms[];
> > private JFrame frame;
> > private Container c;
> > private File file;
> > private FileWriter writer;
> > private BufferCapabilities buffercap;
> > private ImageCapabilities imagecap;
> > private Window window;
> > private BufferStrategy bufstrat;
> > private Thread t;
> > private int x = 0;
> > private BufferedImage back1;
> > private BufferedImage back2;
> >
> > public GameEngine()
> > {
> >
> > t = new Thread(this,"Game Loop");
> >
> > try
> > {
> >
> > SwingUtilities.invokeAndWait(new Runnable(){
> >
> >
> > public void run()
> > {
> >
> > try
> > {
> >
> > initGraphics();
> > init();
> >
> > }
> > catch(Exception e)
> > {
> >
> > e.printStackTrace();
> > }
> >
> > }
> >
> >
> >
> > });
> >
> > }
> > catch(Exception e)
> > {
> >
> > e.printStackTrace();
> > }
> >
> >
> > }
> >
> > public void initGraphics()
> > {
> >
> > ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
> > gd = ge.getDefaultScreenDevice();
> > dm = gd.getDisplayMode();
> > gc = gd.getConfigurations();
> > dms = gd.getDisplayModes();
> > back1 = new
> >
> > BufferedImage(dm.getWidth(),dm.getHeight(),BufferedImage.TYPE_INT_ARGB);
> > back2 = new
> >
> > BufferedImage(dm.getWidth(),dm.getHeight(),BufferedImage.TYPE_INT_ARGB);
> >
> >
> > try
> > {
> >
> > file = new File("C:/GraphicsInfo.txt");
> > writer = new FileWriter(file);
> >
> >
> > writer.write("Ideology Software Corporation\n");
> > writer.write("Sample Game Information\n\n");
> > writer.write("Display Information");
> > writer.write("\n\n");
> > writer.write("Width " + dm.getWidth());
> > writer.write("Height " + dm.getHeight());
> > writer.write("\n\n");
> > writer.write("Supported Display Modes");
> > writer.write("\n\n");
> >
> >
> > for(int k = 0;k < dms.length;k++)
> > {
> > writer.write("\n\n");
> > writer.write("Display Mode " + k);
> > writer.write("\n\n");
> > writer.write("Width " + dms[k].getWidth());
> > writer.write("\n");
> > writer.write("Height " +
> > dms[k].getHeight());
> > writer.write("\n");
> > writer.write("Bit Depth " +
> > dms[k].getBitDepth());
> > writer.write("\n");
> > writer.write("Refresh Rate " +
> > dms[k].getRefreshRate());
> > writer.write("\n");
> >
> > }
> >
> >
> >
> > for(int i = 0;i < gc.length;i++)
> > {
> >
> >
> > Rectangle rect = gc[i].getBounds();
> > buffercap = gc[i].getBufferCapabilities();
> > imagecap = gc[i].getImageCapabilities();
> > writer.write("\n\n");
> > writer.write("Graphics Configuration " +
> > i);
> > writer.write("\n\n");
> > writer.write("Configuration Width " +
> > rect.width);
> > writer.write("\n");
> > writer.write("Configuration Height " +
> > rect.height);
> > writer.write("\n");
> > writer.write("Configuration x " + rect.x);
> > writer.write("\n");
> > writer.write("Configuration y " + rect.y);
> > rect = ge.getMaximumWindowBounds();
> > writer.write("Max Window
> > Configuraiton\n\n");
> > writer.write("\n");
> > writer.write("Max Window Width " +
> > rect.width);
> > writer.write("\n");
> > writer.write("Max Window Height " +
> > rect.height);
> > writer.write("\n\n");
> > writer.write("Buffer Capabilities");
> > writer.write("\n");
> > writer.write("FullScreen Required " +
> > buffercap.isFullScreenRequired());
> > writer.write("\n");
> > writer.write("MultiBuffer Support " +
> > buffercap.isMultiBufferAvailable());
> > writer.write("\n");
> > writer.write("Page Flipping Support " +
> > buffercap.isPageFlipping());
> > writer.write("\n\n");
> > writer.write("Image Capabilities");
> > writer.write("\n");
> > writer.write("Acceration Support " +
> > imagecap.isAccelerated());
> > writer.write("\n");
> > writer.write("Volatile Image Support " +
> > imagecap.isTrueVolatile());
> > writer.write("\n\n");
> >
> >
> >
> > }
> >
> > writer.close();
> >
> >
> >
> >
> > }
> > catch(Exception e)
> > {
> >
> >
> > e.printStackTrace();
> >
> > }
> >
> >
> >
> > }
> >
> > public void init()
> > {
> >
> > frame = new JFrame();
> > frame.setSize(800,800);
> > frame.setTitle("Game Application");
> > frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
> > frame.setIgnoreRepaint(true);
> > frame.setUndecorated(true);
> > c = frame.getContentPane();
> > c.setLayout(null);
> > c.setBackground(new Color(0,0,0));
> > frame.setResizable(true);
> > frame.setVisible(true);
> >
> > if(gd.isFullScreenSupported())
> > {
> >
> > gd.setFullScreenWindow(frame);
> >
> > }
> >
> >
> > window = gd.getFullScreenWindow();
> > window.createBufferStrategy(2);
> > bufstrat = window.getBufferStrategy();
> > t.start();
> >
> > }
> >
> > public boolean renderBackOne()
> > {
> > if(back1 != null)
> > {
> >
> > Graphics2D backg1 = back1.createGraphics();
> > backg1.setColor(new Color(255,255,255));
> > backg1.fillRect(x,100,100,100);
> >
> >
> > return true;
> >
> > }
> > else
> > {
> >
> > return false;
> > }
> >
> > }
> >
> > public boolean renderBackTwo()
> > {
> >
> > if(back2 != null)
> > {
> >
> > Graphics2D backg2 = back2.createGraphics();
> > backg2.setColor(new Color(255,255,255));
> > backg2.fillRect(x,100,100,100);
> >
> > return true;
> >
> > }
> > else
> > {
> >
> > return false;
> > }
> >
> >
> >
> >
> > }
> >
> >
> > public void update()
> > {
> >
> >
> >
> > if(!bufstrat.contentsLost())
> > {
> >
> >
> > bufstrat.show();
> >
> >
> > }
> >
> > }
> >
> > public void render()
> > {
> >
> > Graphics2D g2 = (Graphics2D)bufstrat.getDrawGraphics();
> > g2.setColor(new Color(255,255,255));
> >
> > if(g2 != null)
> > {
> >
> > if(renderBackOne())
> > {
> >
> > g2.drawImage(back1,new
> >
> > AffineTransformOp(g2.getTransform(),g2.getRenderingHints()),0,0);
> > }
> > else
> > {
> > g2.drawImage(back2,new
> >
> > AffineTransformOp(g2.getTransform(),g2.getRenderingHints()),0,0);
> >
> > }
> >
> >
> >
> >
> > }
> >
> >
> >
> >
> > }
> >
> > public void run()
> > {
> >
> > try
> > {
> >
> > for(;;)
> > {
> >
> > Thread.sleep(750);
> > update();
> > render();
> > x++;
> >
> >
> > }
> >
> >
> > }
> > catch(Exception e)
> > {
> >
> > e.printStackTrace();
> > }
> > }
> >
> > public static void main(String args[])
> > {
> >
> > GameEngine gameengine = new GameEngine();
> > }
> >}
> >[Message sent by forum member 'xeondeveloper' (xeondeveloper)]
> >
> >http://forums.java.net/jive/thread.jspa?messageID=108465
> >
> >===========================================================================
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> >[EMAIL PROTECTED] and include in the body of the message "help".
>
> ===========================================================================
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