src/third_party/WebKit/LayoutTests/compositing/fixed-background-after-style-recalc.html

   1 <!doctype html>
   2 <style>
   3     body {
   4         background-image: url('resources/simple_image.png');
   5         background-size: 200px 200px;
   6         height: 3000px;
   7     }
   8
   9     body.fixed {
  10         background-attachment: fixed;
  11     }
  12 </style>
  13 <script>
  14     if (window.testRunner)
  15         testRunner.dumpAsTextWithPixelResults();
  16
  17     if (window.internals) {
  18         window.internals.settings.setForceCompositingMode(true);
  19         window.internals.settings.setAcceleratedCompositingForFixedRootBackgroundEnabled(true);
  20     }
  21
  22     window.onload = function() {
  23         window.scrollTo(0, 300);
  24         // crbug.com/343132 RenderLayerCompositor::rootFixedBackgroundsChanged should not query stale compositing state
  25         document.querySelector('body').classList.add('fixed');
  26     }
  27 </script>