Blitz - WPT: mask-image-multi-layer-while-loading.tentative.html

wpt / css / css-masking / mask-image / mask-image-multi-layer-while-loading.tentative.html

/css/css-masking/mask-image/mask-image-multi-layer-while-loading.tentative.html

<!DOCTYPE html>
<html class="reftest-wait">
<meta charset="utf-8">
<title>Multiple mask-image layers without backdrop-filter stay hidden while one mask image is loading</title>
<link rel="help" href="https://drafts.fxtf.org/css-masking-1/#the-mask-image">
<link rel="match" href="mask-image-multi-layer-while-loading-ref.html">
<!-- CSS Masking does not specify behavior while some mask-image layers are still loading. -->

<script src="/common/reftest-wait.js"></script>
<script src="/common/rendering-utils.js"></script>

<style>
  body {
    margin: 0;
    background: yellow;
  }

  #target {
    width: 120px;
    height: 60px;
    background: blue;
  }
</style>

<div id="target"></div>

<script>
  onload = async () => {
    const url = "support/50x100-opaque-blue.svg?pipe=trickle(d1000)";
    const target = document.getElementById('target');
    target.style.maskImage = `linear-gradient(black, black), url('${url}')`;
    await waitForAtLeastOneFrame();
    await waitForAtLeastOneFrame();
    takeScreenshot();
  };
</script>

/css/css-masking/mask-image/mask-image-multi-layer-while-loading-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Reference for hidden multiple mask-image layers while one layer is loading</title>

<style>
  body {
    margin: 0;
    background: yellow;
  }
</style>