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

<title>CSS Filter: Scale a transformed child element"></title>
<link rel="help" href="https://drafts.fxtf.org/filter-effects-1/#feComponentTransferElement">
<link rel="issue" href="https://bugs.chromium.org/p/chromium/issues/detail?id=333014">
<link rel="match" href="reference/filter-region-transformed-child-001-ref.html">
<meta name="assert" content="This test ensures that the feComponentTransfer filter scales a child with CSS scale transform.">
<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>
#parent {
    display: inline-block;
    filter: url(#filter);
}
#child {
    background-color: gray;
    width: 50px;
    height: 50px;
    transform: translate(25px, 25px) scale(2);
}
</style>
<div id="parent"><div id="child"></div></div>