<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>CSS Test: blending between an element having 3D transitions and its child</title>
        <link rel="author" title="Mirela Budăeș" href="mailto:mbudaes@adobe.com">
        <link rel="author" title="Ion Roșca" href="mailto:rosca@adobe.com">
        <link rel="reviewer" title="Mihai Țică" href="mailto:mitica@adobe.com">
        <link rel="help" href="https://drafts.fxtf.org/compositing-1/#mix-blend-mode">
        <meta name="flags" content="dom"/>
        <meta name="assert" content="Test checks that an element having mix-blend-mode blends with its parent element having 3D transform and transition">
        <style type="text/css">
            .parent {
                background: yellow;
                width: 140px;
                height: 140px;
                position:relative;
                z-index: 1;
                margin: 10px;
                float: left;
                transition: transform 2s;

            }
            .rotated {
                transform: rotateX(60deg) rotateZ(10deg) rotateY(180deg);
            }
            .blended {
                background: red;
                width: 140px;
                height: 140px;
                mix-blend-mode: difference;
            }
            .ref {
                background: none;
            }
            .ref .blended {
                background: lime;
                mix-blend-mode: normal;
            }
        </style>
    </head>
    <body>
        <p>Test passes if you can see two rotating lime rectangles, both identical.</p>
        <div>
            <div class="parent" id="parent">
                <div class="blended"></div>
            </div>
            <div class="parent ref" id="parentref">
                <div class="blended"></div>
            </div>
        </div>
        <script type="text/javascript">
            var parent = document.getElementById('parent');
            var parentref = document.getElementById('parentref');
             function rotate (el, cl) {
                if (el.className === cl + ' rotated')
                    el.className = cl;
                else
                    el.className = cl + ' rotated';
            }
            setTimeout(function () { rotate(parent, 'parent'); rotate(parentref, 'parent ref'); }, 0);
            setInterval(function () { rotate(parent, 'parent'); rotate(parentref, 'parent ref'); }, 2000);
        </script>
    </body>
</html>
