FULL PRODUCT VERSION :
java version "1.6.0_10"
Java(TM) SE Runtime Environment (build 1.6.0_10-b33)
Java HotSpot(TM) Client VM (build 11.0-b15, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Windows XP SP3 i386
Fedora Linux 9 i386
Fedora Linux 10 i386


A DESCRIPTION OF THE PROBLEM :
Under certain conditions, java.awt.image.AffineTransformOp fails with
Exception in thread "main" java.lang.InternalError: Can't grab SPPSM fields
at sun.awt.image.ImagingLib.transformBI(Native Method)
at sun.awt.image.ImagingLib.filter(ImagingLib.java:238)
at java.awt.image.AffineTransformOp.filter(AffineTransformOp.java:266)

This behavior is not visible in any previous version of Java. The exact same code succeeds with 1.4.2 and 5.0

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
I wrote a sample program that reproduces the error:

import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.IndexColorModel;
import java.awt.image.Raster;
import java.awt.image.SampleModel;
import java.awt.image.SinglePixelPackedSampleModel;
import java.awt.image.WritableRaster;

public class Test {

public static void main(String[] args) {

byte[] screenBufferBytes = new byte [1024 * 728];
ColorModel colourModel8 = new IndexColorModel(8, 255, new byte[255], new byte[255], new byte[255]);
DataBuffer dbuf = new DataBufferByte(screenBufferBytes, screenBufferBytes.length);
SampleModel samplemodel = new SinglePixelPackedSampleModel(DataBuffer.TYPE_BYTE, 1024, 728, new int[] {0xffff});
WritableRaster raster = Raster.createWritableRaster(samplemodel, dbuf, null);
BufferedImage screenImage = new BufferedImage(colourModel8, raster, false, null);
AffineTransform tx = new AffineTransform();
tx.scale(0.5, 0.5);
AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
BufferedImage image = op.filter(screenImage, null); // Fails here
System.out.println(image.getClass().getName());

}

}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
op.filter(screenImage, null) should return not throw an internal error.
ACTUAL -
Exception in thread "main" java.lang.InternalError: Can't grab SPPSM fields
at sun.awt.image.ImagingLib.transformBI(Native Method)
at sun.awt.image.ImagingLib.filter(ImagingLib.java:238)
at java.awt.image.AffineTransformOp.filter(AffineTransformOp.java:266)

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Exception in thread "main" java.lang.InternalError: Can't grab SPPSM fields
at sun.awt.image.ImagingLib.transformBI(Native Method)
at sun.awt.image.ImagingLib.filter(ImagingLib.java:238)
at java.awt.image.AffineTransformOp.filter(AffineTransformOp.java:266)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.IndexColorModel;
import java.awt.image.Raster;
import java.awt.image.SampleModel;
import java.awt.image.SinglePixelPackedSampleModel;
import java.awt.image.WritableRaster;

public class Test {

public static void main(String[] args) {

byte[] screenBufferBytes = new byte [1024 * 728];
ColorModel colourModel8 = new IndexColorModel(8, 255, new byte[255], new byte[255], new byte[255]);
DataBuffer dbuf = new DataBufferByte(screenBufferBytes, screenBufferBytes.length);
SampleModel samplemodel = new SinglePixelPackedSampleModel(DataBuffer.TYPE_BYTE, 1024, 728, new int[] {0xffff});
WritableRaster raster = Raster.createWritableRaster(samplemodel, dbuf, null);
BufferedImage screenImage = new BufferedImage(colourModel8, raster, false, null);
AffineTransform tx = new AffineTransform();
tx.scale(0.5, 0.5);
AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_BILINEAR);
BufferedImage image = op.filter(screenImage, null); // Fails here
System.out.println(image.getClass().getName());

}

}
---------- END SOURCE ----------

Release Regression From : 5.0u12
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.