Now that I clarified the issues, I think you can do something similar by creating a JAVA2D PGraphics, and doing the image() and copy() operations on it, then you can image() it on the PDF surface.
Because of the issues mentioned above, most of the bitmap operations (like blend and such) are deactivated in PDF.
Because of the issues mentioned above, most of the bitmap operations (like blend and such) are deactivated in PDF.