import QtQuick 2.0

Item
{
    width: 200
    height: 100

    Rectangle {
        id: box
        width: 200
        height: 100

        color: "#0000ff"

        Rectangle {
            x: 100
            width: 100
            height: 100
            color: "#00ff00"
        }

        visible: false

        layer.enabled: true
    }

    ShaderEffect {
        anchors.fill: parent
        property variant source: box

        fragmentShader: "
        uniform lowp sampler2D source;
        uniform lowp float qt_Opacity;
        varying highp vec2 qt_TexCoord0;
        void main() {
            gl_FragColor = texture2D(source, qt_TexCoord0).bgra * qt_Opacity;
        }"
    }

}