dom/animation/test/crashtests/1216842-5.html
author Andy Leiserson <aleiserson@mozilla.com>
Sat, 19 Jul 2025 16:44:54 +0000 (6 hours ago)
changeset 797257 246e16bb06c941d6f64d807d43c807bfba04ae86
parent 417844 238d0908de38dbeed24a2e288b8b25e64087ec7c
permissions -rw-r--r--
Bug 1976958 - Update wgpu to b83c9cf (2025-07-10) r=webgpu-reviewers,supply-chain-reviewers,teoxoy Differential Revision: https://phabricator.services.mozilla.com/D257047
<!doctype html>
<html class="reftest-wait">
  <head>
    <title>
      Bug 1216842: effect-level easing function produces negative values passed
      to step-end function (compositor thread)
    </title>
    <style>
    #target {
      width: 100px; height: 100px;
      background: blue;
    }
    </style>
  </head>
  <body>
  <div id="target"></div>
  </body>
  <script>
    var target = document.getElementById("target");
    var effect =
      new KeyframeEffect(
        target,
        { opacity: [0, 1], easing: "step-end" },
        {
          fill: "forwards",
          /* The function produces negative values in (0, 0.766312060) */
          easing: "cubic-bezier(0,-0.5,1,-0.5)",
          duration: 100,
          iterations: 0.75 /* To finish in the extraporation range */
        }
      );
    var animation = new Animation(effect, document.timeline);
    animation.play();
    animation.finished.then(function() {
      document.documentElement.className = "";
    });
  </script>
</html>