title: What happens when you do not place an icon in all possible sizes in your res folder?
body: <p>I am wondering what would happen if you put for instance one image in only one specific size, let's say image X in <code>hdpi</code> and an other image Y in only resolution size <code>xxhdpi</code>, the size which was "right" for the device was <code>xhdpi</code>. Assuming that the OS decided what was the "right" size for the device.</p>
  
  <p>Will it then downscale the image <code>xxhdpi</code> and upscale <code>hdpi</code> to <code>xhdpi</code>? Or would it only change the size of one image, for instance the one with the lowest resolution remains the same, the higher ones are downscaled? </p>