/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
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** This file is part of the test suite of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL21$
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import QtQuick 1.0
import Qt.labs.shaders 1.0

Rectangle {
    anchors.fill: parent;
    color: "white"

    Timer {
        running: true
        interval: 2000
        repeat: true
        onTriggered: {
            effect.fragmentShader == effect.redFragmentShader ?  effect.fragmentShader = effect.greenFragmentShader :  effect.fragmentShader = effect.redFragmentShader
        }
    }

    ShaderEffectItem {
        id: effect
        anchors.fill: parent;

        property string redFragmentShader: "
            varying highp vec2 qt_TexCoord0;
            void main() {
                gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
            }
        "

        property string greenFragmentShader: "
            varying highp vec2 qt_TexCoord0;
            void main() {
                gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
            }
        "

        fragmentShader: redFragmentShader
    }

    Rectangle {
        width: parent.width
        height: 40
        color: "#cc000000"

        Text {
             id: label
             anchors.centerIn:  parent
             text: effect.fragmentShader == effect.redFragmentShader ? "Effect (display should be red)" : "Effect (display should be green)"
             color: "white"
             font.bold: true
        }
    }
}
