Blitz - WPT: backdrop-filter-isolation-fixed.html

wpt / css / filter-effects / backdrop-filter-isolation-fixed.html

/css/filter-effects/backdrop-filter-isolation-fixed.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>backdrop-filter: fixed position should not cause a backdrop root.</title>
<link rel="author" href="mailto:masonf@chromium.org">
<link rel="help" href="https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty">
<link rel="match"  href="backdrop-filter-non-isolation-ref.html">

<div>
  <p>Expected: Two green boxes overlapped by a yellow box. The overlapped region<br>
  of BOTH green boxes should be inverted (pink).</p>
</div>
<div class="box outside">
  <div class="box stacking-context">
    <div class="box filter">
    </div>
  </div>
</div>

<style>
.box {
  position: absolute;
  width: 100px;
  height: 100px;
  background: green;
}
.outside {
  top: 110px;
  left: 10px;
}
.stacking-context {
  position: fixed;
  top: 110px;
  left: 130px;
}
.filter {
  width: 160px;
  height: 160px;
  top: 30px;
  left: -90px;
  backdrop-filter: invert(1);
  background: #ff08;
}
</style>

/css/filter-effects/backdrop-filter-non-isolation-ref.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>backdrop-filter: Isolation</title>
<link rel="author" href="mailto:masonf@chromium.org">



<div>
  <p>Expected: Two green boxes overlapped by a yellow box. The overlapped region<br>
  of BOTH green boxes should be inverted (pink).</p>
</div>
<div class="box green"></div>
<div class="box green" style="left: 130px;"></div>
<div class="box yellow" style="width:160px;height:160px;top:140px;left:40px;"></div>
<div class="box orange" style="width:70px;height:70px;top:140px;left:40px;"></div>
<div class="box orange" style="width:70px;height:70px;top:140px;left:130px;"></div>

<style>
.box {
  position: absolute;
  width: 100px;
  height: 100px;
  top:110px;
  left:10px;
}
.green { background: green; }
.yellow { background: #880; }
.orange { background: #ffc377; }

</style>