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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/css/css-position/z-index-blend-will-change-overlapping-layers.html
parentInitial commit. (diff)
downloadthunderbird-upstream.tar.xz
thunderbird-upstream.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/testing/web-platform/tests/css/css-position/z-index-blend-will-change-overlapping-layers.html b/testing/web-platform/tests/css/css-position/z-index-blend-will-change-overlapping-layers.html
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+++ b/testing/web-platform/tests/css/css-position/z-index-blend-will-change-overlapping-layers.html
@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html class="reftest-wait">
+<title>z-index, will-change, mix-blend-mode on overlapping layers</title>
+<link rel="match" href="z-index-blend-will-change-overlapping-layers-ref.html">
+<link rel="help" href="https://www.w3.org/TR/CSS2/visuren.html#propdef-z-index">
+<link rel="help" href="https://drafts.csswg.org/css-will-change/#will-change">
+<link rel="help" href="https://www.w3.org/TR/compositing-1/#mix-blend-mode">
+<meta name="assert" content="Tests z-index, will-change and mix-blend-mode on overlapping layers.
+Passes if there is a green bar when the page is scrolled to the bottom.">
+<script src="/common/reftest-wait.js"></script>
+<div style="z-index: 1; position: relative; height: 100vh">
+ <div style="mix-blend-mode: multiply"></div>
+ <div style="will-change: transform; position: absolute; bottom: -100px; width: 100px; height: 100px; background: red">
+ </div>
+</div>
+<div style="z-index: 1; position: relative; background: green; height: 100px"></div>
+<script>
+requestAnimationFrame(()=>{
+ requestAnimationFrame(()=>{
+ window.scrollBy(0, 100);
+ takeScreenshot();
+ });
+});
+</script>
+</html>