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+<!DOCTYPE html>
+<html class=reftest-wait>
+<title>View transitions: capture opacity elements</title>
+<link rel="help" href="https://github.com/WICG/view-transitions">
+<link rel="author" href="mailto:vmpstr@chromium.org">
+<link rel="match" href="new-content-captures-opacity-ref.html">
+<script src="/common/reftest-wait.js"></script>
+<style>
+.box {
+ color: red;
+ background: lightblue;
+ width: 100px;
+ height: 100px;
+ contain: paint;
+ position: absolute;
+ font-size: 30pt;
+ will-change: opacity;
+}
+#e1 { opacity: 0.75; top: 20px; left: 20px; view-transition-name: e1; }
+#e2 { opacity: 0.5; top: 160px; left: 20px; view-transition-name: e2; }
+#e3 { opacity: 0.25; top: 300px; left: 20px; view-transition-name: e3; }
+div.dst { background: lightgreen; }
+/* 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 id=e1 class=box></div>
+<div id=e2 class=box></div>
+<div id=e3 class=box></div>
+<script>
+failIfNot(document.startViewTransition, "Missing document.startViewTransition");
+
+async function runTest() {
+ let t = document.startViewTransition(() => {
+ e1.classList.add("dst");
+ e2.classList.add("dst");
+ e3.classList.add("dst");
+ requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
+ });
+}
+onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
+</script>
+