| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>filter-bug</title> |
| <style> |
| .backdrop { |
| position: absolute; |
| top: 0; |
| left: 0; |
| height: 100px; |
| width: 100px; |
| background-color: silver; |
| } |
| |
| .overlay { |
| position: absolute; |
| top: 50px; |
| left: 50px; |
| width: 400px; |
| height: 100px; |
| background: gray; |
| box-shadow: 0 0 4px black; |
| } |
| |
| .play { |
| font-size: 36pt; |
| background-color: navy; |
| color: white; |
| } |
| .play.changed { |
| filter: drop-shadow(black 0 0 5px); |
| } |
| .composited { |
| transform: translateZ(0); |
| } |
| |
| </style> |
| <script> |
| if (window.testRunner) |
| testRunner.waitUntilDone(); |
| |
| function doTest() |
| { |
| requestAnimationFrame(function() { |
| |
| document.getElementById('play').classList.remove('changed'); |
| if (window.testRunner) |
| testRunner.notifyDone(); |
| }, 0); |
| } |
| |
| window.addEventListener('load', doTest, false); |
| </script> |
| </head> |
| <body> |
| <div class="composited backdrop"></div> |
| <div class="overlay"> |
| <span id="play" class="play changed">this should be |
| visible</span> |
| </div> |
| </body> |
| </html> |
