chromium/src/third_party/blink/web_tests/external/wpt/css/filter-effects/filter-region-transformed-composited-child-001.html

<title>CSS Filters: filtered parent with composited or transformed child</title>
<link rel="author" title="Stephen White" href="mailto:senorblanco@chromium.org">
<link rel="help" href="https://drafts.fxtf.org/filter-effects/#FilterProperty">
<link rel="help" href="https://drafts.fxtf.org/filter-effects/#feComponentTransferElement">
<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=618642">
<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=620394">
<link rel="match" href="reference/filter-region-transformed-composited-child-001-ref.html">
<meta name="assert" content="This test ensures that filtered parent works correctly with composited or transformed children.">
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="0" height="0">
  <defs>
    <filter id="filter" x="25%" y="0%" width="50%" height="100%">
      <feComponentTransfer>
        <feFuncR type="linear" intercept="0" slope="1"/>
        <feFuncG type="linear" intercept="0" slope="0"/>
        <feFuncB type="linear" intercept="0" slope="0"/>
        <feFuncA type="linear" intercept="0" slope="1"/>
      </feComponentTransfer>
    </filter>
  </defs>
</svg>
<style>
div {
    position: absolute;
}
.filtered {
    filter: url(#filter);
}
.child {
    background-color: gray;
    width: 50px;
    height: 50px;
    position: absolute;
    will-change: transform;
}
.p1 {
    left: 50px;
    top: 50px;
}
.c1 {
    transform: translate(0px, 25px);
}
.p2 {
    left: 150px;
    top: 50px;
}
.c2 {
    transform: translate(0px, -25px);
}
</style>
<div class="filtered p1"><div class="child c1"></div></div>
<div class="filtered p2"><div class="child c2"></div></div>