src/third_party/WebKit/LayoutTests/compositing/repaint/should-not-clip-composited-viewport-scrolling-layer.html

   1 <!DOCTYPE HTML>
   2 <script src="../../fast/repaint/resources/text-based-repaint.js"></script>
   3 <script>
   4 if (window.internals)
   5   internals.settings.setPreferCompositingToLCDTextEnabled(true);
   6 function repaintTest() {
   7   document.getElementById('content').style.backgroundColor = 'green';
   8   window.scrollTo(2000, 2000);
   9 }
  10 window.onload = runRepaintTest;
  11 </script>
  12 <style>
  13 #content {
  14   width: 5000px;
  15   height: 5000px;
  16   background-color: red;
  17 }
  18 </style>
  19 <div id="content">
  20 Tests invalidation of scrolling layer. Passes if the repaint rect is not clipped,
  21 and there is no red when the scrolling container is scrolled.<br>
  22 Note for manual testing: must run with --enable-prefer-compositing-to-lcd-text
  23 on non-high-dpi machines to enable composited scrolling.
  24 </div>