new-content-preserve-3d-ancestor.html

<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: computed transform for elements with transform-style:preserve-3d ancestors is correct</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" title="Matt Woodrow" href="mailto:[email protected]">
<link rel="match" href="new-content-preserve-3d-ancestor-ref.html">
<script src="/common/rendering-utils.js"></script>
<script src="/common/reftest-wait.js"></script>
<script src="../../../../../resources/ui-helper.js"></script>
<style>
.box {
  background: lightblue;
  width: 100px;
  height: 100px;
  transform: rotateY(60deg);
  view-transition-name: target;
}
.outer {
  width: 100px;
  height: 100px;
  transform-style: preserve-3d;
  transform: rotateY(60deg);
}

/* We're verifying what we capture, so just display the new contents for 5 minutes.  */
html::view-transition-group(*) { animation-duration: 300s; }
html::view-transition-new(*) { animation: unset; opacity: 1; }
html::view-transition-old(*) { animation: unset; opacity: 0; }
/* hide the root so we show transition background to ensure we're in a transition */
html::view-transition-group(root) { animation: unset; opacity: 0; }
html::view-transition { background: lightpink; }
</style>
<div class=outer>
  <div class=outer>
    <div class=box></div>
  </div>
</div>
<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");

async function runTest() {
  await waitForAtLeastOneFrame();

  let t = document.startViewTransition(() => {
    requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
  });
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>
chromium/third_party/blink/web_tests/external/wpt/css/css-view-transitions/new-content-preserve-3d-ancestor.html
