blob: 00d574d83cf2c3f507fd0a9fb2d3803fb0b9e1aa [file] [log] [blame]
<!DOCTYPE html>
<script src="../resources/text-based-repaint.js"></script>
<script>
function repaintTest() {
document.getElementById('fixed').style.display = 'none';
}
onload = function() {
// Scroll before repaint test to test correct scroll offset of invalidation rect
// for fixed-position element when it needs repaint.
window.scrollTo(0, 400);
runRepaintAndPixelTest();
};
</script>
<style>
body {
height: 2000px;
}
#fixed-container {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: green;
backface-visibility: hidden;
}
#fixed {
position: fixed;
/* Using 99% opacity to ensure fixed position is not automatically promoted. */
opacity: 0.99;
top: 100px;
left: 100px;
width: 200px;
height: 200px;
background-color: red;
}
</style>
Tests paint invalidation of fixed elements under a composited fixed element after scrolled.
Passes if there is only green background.
<div id="fixed-container">
<div id="fixed"></div>
</div>