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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Backdrop Filter should repaint when changed via script"
href="https://bugs.webkit.org/show_bug.cgi?id=149319">149319</a>
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<th>Summary</th>
<td>Backdrop Filter should repaint when changed via script
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>Product</th>
<td>WebKit
</td>
</tr>
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<th>Version</th>
<td>WebKit Nightly Build
</td>
</tr>
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<th>Hardware</th>
<td>Unspecified
</td>
</tr>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>WebCore Misc.
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
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<th>Reporter</th>
<td>joepeck@webkit.org
</td>
</tr>
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<th>CC</th>
<td>dino@apple.com, webkit-bug-importer@group.apple.com
</td>
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<p>
<div>
<pre>* SUMMARY
Backdrop Filter should repaint when changed via script.
* TEST
<style>
.back {
width: 300px;
height: 150px;
margin: 100px;
background: blue;
}
.top {
width: 1000px;
height: 50px;
position: absolute;
left: 0;
top: 150px;
-webkit-backdrop-filter: blur(50px);
}
</style>
<div class="back">
<div id="x" class="top"></div>
</div>
<button id="a">Blur 10</button>
<button id="b">Blur -10</button>
<button id="c">Blur 50</button>
<button id="d">Show / Hide the element</button>
<script>
a.onclick = function() { x.style.webkitBackdropFilter = "blur(10px)"; }
b.onclick = function() { x.style.webkitBackdropFilter = "blur(-10px)"; }
c.onclick = function() { x.style.webkitBackdropFilter = "blur(50px)"; }
d.onclick = function() { x.hidden = !x.hidden; }
</script>
* STEPS TO REPRODUCE
1. Show test
2. Click on one of the Blur buttons to change the blur
=> nothing happens, expected the element to repaint
3. Click the button to hide the blur element
3. Click the button to show the blur element
=> blur is now updated</pre>
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