public synchronized Raster getRaster(int x, int y, int w, int h) {
if (wrn == null) {
DirectColorModel dcm = (DirectColorModel) getColorModel();
SampleModel smHw;
int dataType = 0;
int scanStride = width;
if (dcm.getPixelSize() == 24 || dcm.getPixelSize() == 32) {
dataType = DataBuffer.TYPE_INT;
} else {
// 15, 16
dataType = DataBuffer.TYPE_USHORT;
}
// note that we have to use the surface width and height here,
// not the passed w,h
smHw = new SinglePixelPackedSampleModel(dataType, width, height, scanStride, dcm.getMasks());
DataBuffer dbn =
new D3DDataBufferNative(
this, dataType,
width, height);
wrn = WritableRasterNative.createNativeRaster(smHw, dbn);
}
return wrn;
}
