static GrabbableIntPixels grabbableIntPixels_fastOrSlow(BufferedImage image) {
  pcall {
    GrabbableIntPixels gp = grabbableIntPixels(image);
    if (gp != null) ret gp;
  }
    
  // Use pixelGrabber if quick method fails
  int w = image.getWidth(), h = image.getHeight();
  PixelGrabber pixelGrabber = new(image, 0, 0, w, h, data, 0, w);
  if (!pixelGrabber.grabPixels())
    fail("Could not grab pixels");
      
  ret GrabbableIntPixels(data, w, h, 0, w);
}