[kaffe] Problem with gnu.java.awt.peer.gtk.GtkImagePainter.drawPixels

[Max Gilead]

Hi!

I tried to run XMage (http://yellowhedgehog.com/xmage/) using software 
renderer with Kaffe and got a problem with 
gnu.java.awt.peer.gtk.GtkImagePainter.drawPixels native implementation. 
It happens only occassionally - ie. after I put a number of printlns 
before the call I got several hundred successful calls for one that fails.

This code:
        int[] convPixels = convertPixels (pixels, model);
System.out.println("gc="+ gc);
System.out.println("redBG="+ redBG);
System.out.println("greenBG="+ greenBG);
System.out.println("blueBG="+ blueBG);
System.out.println("startX + x="+ (startX + x));
System.out.println("startY + y="+ (startY + y));
System.out.println("width="+ width);
System.out.println("height="+ height);
System.out.println("convPixels="+ convPixels);
System.out.println("offset="+ offset);
System.out.println("scansize="+ scansize);
System.out.println("affine="+ affine);
    drawPixels (gc, redBG, greenBG, blueBG,
                startX + x, startY + y,
                width, height, convertPixels (pixels, model), offset,
                scansize, affine);

produces this log during failed call:

gc=gnu.java.awt.peer.gtk.GdkGraphics[font=java.awt.Font[family=Helvetica,name=Helvetica,style=plain,size=12],color=java.awt.SystemColor[i=9]]
redBG=192
greenBG=192
blueBG=192
startX + x=0
startY + y=0
width=600
height=600
convPixels=[I at 8d6100c
offset=0
scansize=600
affine=null
Exception during event dispatch:
java.lang.NullPointerException
   at gnu.java.awt.peer.gtk.GtkImagePainter.drawPixels 
(GtkImagePainter.java)
   at gnu.java.awt.peer.gtk.GtkImagePainter.setPixels 
(GtkImagePainter.java:195)
   at gnu.java.awt.peer.gtk.GtkImage.startProduction (GtkImage.java:302)
   at gnu.java.awt.peer.gtk.GtkImagePainter.run (GtkImagePainter.java:114)
   at gnu.java.awt.peer.gtk.GtkImagePainter.<init> (GtkImagePainter.java:78)
   at gnu.java.awt.peer.gtk.GdkGraphics.drawImage (GdkGraphics.java:144)
   at gnu.java.awt.peer.gtk.GdkGraphics.drawImage (GdkGraphics.java:158)
   at go.GoInterface.paint (GoInterface.java:406)
   at go.GoInterface.update (GoInterface.java:385)
   at gnu.java.awt.peer.gtk.GtkCanvasPeer.handleEvent 
(GtkCanvasPeer.java:82)
   at java.awt.Component.dispatchEvent (Component.java:2257)
   at java.awt.EventQueue.dispatchEvent (EventQueue.java:425)
   at java.awt.EventDispatchThread.run (EventDispatchThread.java:80)
   at java.lang.VMThread.run (VMThread.java:139)


While this code:

        int[] convPixels = convertPixels (pixels, model);
System.out.println("gc="+ gc);
System.out.println("redBG="+ redBG);
System.out.println("greenBG="+ greenBG);
System.out.println("blueBG="+ blueBG);
System.out.println("startX + x="+ (startX + x));
System.out.println("startY + y="+ (startY + y));
System.out.println("width="+ width);
System.out.println("height="+ height);
System.out.println("convPixels="+ convPixels);
System.out.println("offset="+ offset);
System.out.println("scansize="+ scansize);
System.out.println("affine="+ affine);
    drawPixels (gc, redBG, greenBG, blueBG,
                startX + x, startY + y,
                width, height, convPixels, offset,
                scansize, affine);

produces this log during failed call:

gc=gnu.java.awt.peer.gtk.GdkGraphics[font=java.awt.Font[family=Helvetica,name=He 
lvetica,style=plain,size=12],color=java.awt.SystemColor[i=9]]
redBG=192
greenBG=192
blueBG=192
startX + x=0
startY + y=0
width=600
height=600
convPixels=[I at 95f200c
offset=0
scansize=600
affine=null
Exception during event dispatch:
java.lang.NullPointerException
   at gnu.java.awt.peer.gtk.GtkImagePainter.drawPixels 
(GtkImagePainter.java)
   at gnu.java.awt.peer.gtk.GtkImagePainter.setPixels 
(GtkImagePainter.java:195)
   at java.awt.image.MemoryImageSource.sendPicture 
(MemoryImageSource.java:234)
   at java.awt.image.MemoryImageSource.startProduction 
(MemoryImageSource.java:1 69)
   at gnu.java.awt.peer.gtk.GtkImage.startProduction (GtkImage.java:308)
   at gnu.java.awt.peer.gtk.GtkImagePainter.run (GtkImagePainter.java:114)
   at gnu.java.awt.peer.gtk.GtkImagePainter.<init> (GtkImagePainter.java:78)
   at gnu.java.awt.peer.gtk.GdkGraphics.drawImage (GdkGraphics.java:144)
   at gnu.java.awt.peer.gtk.GdkGraphics.drawImage (GdkGraphics.java:158)
   at jgl.GL.glXSwapBuffers (GL.java:6140)
   at xmage.turbine.render.jgl.JGLRenderingCanvas.paint 
(JGLRenderingCanvas.java :68)
   at java.awt.Canvas.update (Canvas.java:212)
   at gnu.java.awt.peer.gtk.GtkCanvasPeer.handleEvent 
(GtkCanvasPeer.java:82)
   at java.awt.Component.dispatchEvent (Component.java:2257)
   at java.awt.EventQueue.dispatchEvent (EventQueue.java:425)
   at java.awt.EventDispatchThread.run (EventDispatchThread.java:80)
   at java.lang.VMThread.run (VMThread.java:139)

Log for successful call is exactly the same as for unsuccessful one.

Regards,
Max


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