Not getting expected results when using this method ,

public abstract boolean drawImage(Image img,
                                  int dx1,
                                  int dy1,
                                  int dx2,
                                  int dy2,
                                  int sx1,
                                  int sy1,
                                  int sx2,
                                  int sy2,
                                  ImageObserver observer)

, on win95 without DirectDraw installed. Here are the cases that are failing :

       // Flip H & V by flipping source X and source Y coords
        g.drawImage(img,
                    0, y2 + 1, x1 - 1, ah,
                    iw, ih, 0, 0,
                    this);
        // Flip V by flipping source Y coords
        g.drawImage(img,
                    x1, y2 + 1, x2, ah,
                    0, ih, iw, 0,
                    this);
        // Flip H & V by flipping source X and dest Y coords
        g.drawImage(img,
                    x2 + 1, ah, aw, y2 + 1,
                    iw, 0, 0, ih, this);

This source snippet taken from FlipImage.java. The problem is visible with one other compatibility applet as well, WarpImage. Attached is the source for FlipImage.java. The bug doesn't appear under winNT GDI.

/home/lichtenw/JavaMedia/2d/tests/FlipImage
/home/lichtenw/JavaMedia/2d/tests/WarpImage



The 3 images on the bottom are not clipped and flipped correctly. See attached flipimage.gif. The problem reproduced on my PC win95 Matrox Millennium 24 bit color. Launched with :

java -Dsun.java2d.noddraw= FlipImage duke.gif

brian.lichtenwalter@Eng 1998-10-08


Works in jdk1.2beta4.

Broken in jdk1.2beta4.1 and beyond.

Broken in
/net/capra/export/JavaMedia/2D/builds/11-Aug-98

That's going back as far as possible in the nightly builds.