<p>
  <img class="alignnone size-full" src="images/colorfill-random.png" alt="" width="640" height="480" />
</p>
<p>
  This test draws randomly colored rectangles to the primary buffer, using the Blt() API with the DDBLT_COLORFILL option. Please note that on some graphics cards this can result in up to thousands of frames per second.
</p>