QQuickWidget with shader effects on Windows

import QtQuick 2.0
import QtGraphicalEffects 1.0

Rectangle {
    id: root
    Item {
        id: obj
        anchors.fill: parent
        Rectangle {
            property int d: 100
            id: square
            width: d
            height: d
            anchors.centerIn: parent
            color: "red"
            NumberAnimation on rotation { from: 0; to: 360; duration: 2000; loops: Animation.Infinite; }
        }
        Text {
            anchors.centerIn: parent
            text: "Qt Quick running in a widget"
        }
        visible: false
    }
    Desaturate {
        source: obj
        anchors.fill: obj
        desaturation: 1
    }
}