third_party/WebKit/LayoutTests/paint/invalidation/spv2/should-not-clip-composited-viewport-scrolling-layer.html

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