// Results for ThinkPad in MPixels/s:

//   852 (alpha 0) / 158 (alpha 0x80) / 401 (alpha 0xFF)

sclass BenchDrawingImageOnImageWithAlpha {

  int w = 1000, h = w;

  long nanos;

  settable int alphaValue = 0x80; // alpha 0 (draw nothing) and alpha 255 (draw opaque) are faster than other values

  run {

    int[] pixels = repIntAsArray(w*h, -1);

    var img = bufferedImageWithoutAlpha(w, h, pixels);

    pixels = repIntAsArray(w*h, alphaValue << 24);

    var img2 = bufferedImageWithAlpha(w, h, pixels);

    var g = graphics(img);

    nanos = benchFor5("draw " + nPixels(w*h), -> drawImage(g, img2));

    print("Fastest result for alpha " + alphaValue + ": Can draw " + n2(w*h*1000/nanos) + " MPixels/s");

  }

}

svoid benchDrawingImageOnImageWithAlpha() {

  new BenchDrawingImageOnImageWithAlpha().alphaValue(0).run();

  new BenchDrawingImageOnImageWithAlpha().alphaValue(0x80).run();

  new BenchDrawingImageOnImageWithAlpha().alphaValue(0xFF).run();

}