Backported QML ShaderEffectItem from QML2.0 into Qt Quick 1.1

This issue is about backporting Scenegraph's ShaderEffectItem and ShaderEffectSource elements into Qt Quick 1.1 as a Qt labs plugin.
Purpose of these elements is to provide an interface for utilizing OpenGL shaders in QML applications.

Task-number: QTBUG-18346
Reviewed-by: Kim Gronholm

12 files changed, 557 insertions, 1 deletions

diff --git a/tests/benchmarks/declarative/declarative.pro b/tests/benchmarks/declarative/declarative.pro
index 5dd31f3..51bbfae 100644
--- a/tests/benchmarks/declarative/declarative.pro
+++ b/tests/benchmarks/declarative/declarative.pro
@@ -10,6 +10,6 @@ SUBDIRS += \
            script \
            qmltime
 
-contains(QT_CONFIG, opengl): SUBDIRS += painting
+contains(QT_CONFIG, opengl): SUBDIRS += painting qmlshadersplugin
 
 
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/GaussianBlur.qml b/tests/benchmarks/declarative/qmlshadersplugin/GaussianBlur.qml
new file mode 100644
index 0000000..4424b0b
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/GaussianBlur.qml
@@ -0,0 +1,43 @@
+import Qt 4.7
+import Qt.labs.shaders 1.0
+
+Item {
+    id: gaussianBlur
+    property variant source: 0
+    property real radius: 8;
+    property real deviation: Math.sqrt(-((radius+1) * (radius+1)) / (2 * Math.log(1.0 / 255.0)))
+    property bool live: true
+
+    ShaderEffectItem {
+        id: cache
+        anchors.fill: parent
+        visible: !gaussianBlur.live
+        property variant source: ShaderEffectSource { sourceItem: verticalBlur; live: false; hideSource: true }
+    }
+
+    GaussianDirectionalBlur {
+        id: verticalBlur
+        anchors.fill: parent
+
+        deltaX: 0.0
+        deltaY: 1.0/parent.height
+
+        source: ShaderEffectSource { sourceItem: horizontalBlur; hideSource: true }
+        deviation: gaussianBlur.deviation
+        radius: gaussianBlur.radius
+    }
+
+    GaussianDirectionalBlur {
+        id: horizontalBlur
+        anchors.fill: parent
+        blending: false
+
+        deltaX: 1.0/parent.width
+        deltaY: 0.0
+
+        source: gaussianBlur.source
+        deviation: gaussianBlur.deviation
+        radius: gaussianBlur.radius
+    }
+
+}
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/GaussianDirectionalBlur.qml b/tests/benchmarks/declarative/qmlshadersplugin/GaussianDirectionalBlur.qml
new file mode 100644
index 0000000..33f576b
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/GaussianDirectionalBlur.qml
@@ -0,0 +1,168 @@
+import Qt 4.7
+import Qt.labs.shaders 1.0
+
+// Note 1. This shader implements gaussian blur without dynamic array access from inside shader loops (Optional feature in OpenGLES 2.0).
+// Note 2. Shader code is generated to avoid ecessive if-else structure in fragment shader. Code re-generation (very slow!) happens if blur radius is changed.
+
+ShaderEffectItem {
+    id: effect
+    property variant source: 0
+    property real deviation: Math.sqrt(-((radius+1) * (radius+1)) / (2 * Math.log(1.0 / 255.0)));
+    property real radius: 8;
+    property real deltaX: 0.0
+    property real deltaY: 0.0
+
+    property real gaussianSum: 0.0
+    property real startIndex: 0.0
+    property real samples: radius * 2
+
+    property variant gwts: []
+    property variant delta: Qt.vector3d(effect.deltaX, effect.deltaY, effect.startIndex);
+    property variant factor_0_2: Qt.vector3d(effect.gwts[0], effect.gwts[1], effect.gwts[2]);
+    property variant factor_3_5: Qt.vector3d(effect.gwts[3],effect.gwts[4],effect.gwts[5]);
+    property variant factor_6_8: Qt.vector3d(effect.gwts[6],effect.gwts[7],effect.gwts[8]);
+    property variant factor_9_11: Qt.vector3d(effect.gwts[9],effect.gwts[10],effect.gwts[11]);
+    property variant factor_12_14: Qt.vector3d(effect.gwts[12],effect.gwts[13],effect.gwts[14]);
+    property variant factor_15_17: Qt.vector3d(effect.gwts[15],effect.gwts[16],effect.gwts[17]);
+    property variant factor_18_20: Qt.vector3d(effect.gwts[18],effect.gwts[19],effect.gwts[20]);
+    property variant factor_21_23: Qt.vector3d(effect.gwts[21],effect.gwts[22],effect.gwts[23]);
+    property variant factor_24_26: Qt.vector3d(effect.gwts[24],effect.gwts[25],effect.gwts[26]);
+    property variant factor_27_29: Qt.vector3d(effect.gwts[27],effect.gwts[28],effect.gwts[29]);
+    property variant factor_30_32: Qt.vector3d(effect.gwts[30],effect.gwts[31],effect.gwts[32]);
+
+    //Gaussian function = h(x):=(1/sqrt(2*3.14159*(D^2))) * %e^(-(x^2)/(2*(D^2)));
+    function gausFunc(x){
+        return (1/Math.sqrt(2*3.1415926*(Math.pow(effect.deviation,2)))) * Math.pow(2.7182818,-((Math.pow(x,2))/(2*(Math.pow(effect.deviation,2)))));
+    }
+
+    function calcGWTS() {
+        var n = new Array(Math.floor(effect.samples));
+        var step
+        for (var i = 0; i < effect.samples; i++) {
+            step = -effect.samples/2 + i + 0.5
+            n[i] = gausFunc(step);
+        }
+        return n;
+    }
+
+    function buildFragmentShader() {
+
+        var shaderSteps = [
+            "gl_FragColor += texture2D(source, texCoord) * factor_0_2.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_0_2.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_0_2.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_3_5.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_3_5.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_3_5.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_6_8.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_6_8.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_6_8.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_9_11.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_9_11.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_9_11.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_12_14.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_12_14.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_12_14.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_15_17.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_15_17.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_15_17.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_18_20.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_18_20.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_18_20.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_21_23.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_21_23.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_21_23.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_24_26.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_24_26.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_24_26.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_27_29.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_27_29.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_27_29.z; texCoord += shift;",
+
+            "gl_FragColor += texture2D(source, texCoord) * factor_30_32.x; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_30_32.y; texCoord += shift;",
+            "gl_FragColor += texture2D(source, texCoord) * factor_30_32.z; texCoord += shift;"
+        ]
+
+        var shader = fragmentShader_begin
+        var samples = effect.samples
+        if (samples > 32) {
+            console.log("GaussianBlur: Maximum of 32 blur samples exceeded!")
+            samples = 32
+        }
+
+        for (var i = 0; i < samples; i++) {
+            shader += shaderSteps[i]
+        }
+
+        shader += fragmentShader_end
+        effect.fragmentShader = shader
+
+    }
+
+    onDeviationChanged:{
+        effect.startIndex = -effect.samples/2 + 0.5
+        effect.gwts = calcGWTS();
+        var sum = 0.0;
+        for (var j = 0; j < effect.samples; j++) {
+            sum += effect.gwts[j];
+        }
+        effect.gaussianSum = sum
+    }
+
+    Component.onCompleted:{
+        effect.startIndex = -effect.samples/2 + 0.5
+        effect.gwts = calcGWTS();
+        var sum = 0.0;
+        for (var j = 0; j < effect.samples; j++) {
+            sum += effect.gwts[j];
+        }
+        effect.gaussianSum = sum
+        buildFragmentShader()
+    }
+
+    onSamplesChanged: {
+        buildFragmentShader()
+    }
+
+    property string fragmentShader_begin:
+        "
+        varying mediump vec2 qt_TexCoord0;
+        uniform sampler2D source;
+        uniform highp vec3 delta;
+        uniform highp vec3 factor_0_2;
+        uniform highp vec3 factor_3_5;
+        uniform highp vec3 factor_6_8;
+        uniform highp vec3 factor_9_11;
+        uniform highp vec3 factor_12_14;
+        uniform highp vec3 factor_15_17;
+        uniform highp vec3 factor_18_20;
+        uniform highp vec3 factor_21_23;
+        uniform highp vec3 factor_24_26;
+        uniform highp vec3 factor_27_29;
+        uniform highp vec3 factor_30_32;
+        uniform highp float gaussianSum;
+
+        void main() {
+            highp vec2 shift = vec2(delta.x, delta.y);
+            highp float index = delta.z;
+            mediump vec2 texCoord = qt_TexCoord0 + (shift * index);
+            gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
+        "
+
+    property string fragmentShader_end:
+        "
+            if (gaussianSum > 0.0)
+                gl_FragColor /= gaussianSum;
+        }
+        "
+}
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/GaussianDropShadow.qml b/tests/benchmarks/declarative/qmlshadersplugin/GaussianDropShadow.qml
new file mode 100644
index 0000000..be78c86
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/GaussianDropShadow.qml
@@ -0,0 +1,41 @@
+import Qt 4.7
+import Qt.labs.shaders 1.0
+
+Item {
+    id: gaussianDropShadow
+
+    property color shadowColor: Qt.rgba(0.5, 0.5, 0.5, 1.0)
+    property variant source: 0
+    property real radius: 8
+    property real deviation: Math.sqrt(-((radius+1) * (radius+1)) / (2 * Math.log(1.0 / 255.0)))
+    property bool live: true
+
+    GaussianBlur {
+        id: blur
+        anchors.fill: parent
+        radius: gaussianDropShadow.radius
+        deviation: gaussianDropShadow.deviation
+        source: gaussianDropShadow.source
+        live: gaussianDropShadow.live
+    }
+
+    ShaderEffectItem {
+        id: shadow
+        property color shadowColor: gaussianDropShadow.shadowColor
+        property variant source: ShaderEffectSource { sourceItem: blur; hideSource: true }
+        anchors.fill: parent
+
+        fragmentShader:
+            "
+            varying mediump vec2 qt_TexCoord0;
+            uniform sampler2D source;
+            uniform lowp vec4 shadowColor;
+
+            void main() {
+                lowp vec4 sourceColor = texture2D(source, qt_TexCoord0);
+                gl_FragColor = mix(vec4(0), shadowColor, sourceColor.a);
+            }
+            "
+    }
+}
+
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/TestGaussianDropShadow.qml b/tests/benchmarks/declarative/qmlshadersplugin/TestGaussianDropShadow.qml
new file mode 100755
index 0000000..5843d55
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/TestGaussianDropShadow.qml
@@ -0,0 +1,66 @@
+import Qt 4.7
+import Qt.labs.shaders 1.0
+
+Item {
+    id: main
+    width: 360
+    height: 640
+
+    property bool liveShadows: true
+    property real r: 0
+
+    NumberAnimation on r {
+        loops: Animation.Infinite
+        from: 0
+        to: 360
+        duration: 3000
+    }
+
+    Image {
+        id: background
+        width: main.width
+        height: main.height
+        fillMode: Image.Tile
+        source: "bg.jpg"
+    }
+
+    GaussianDropShadow {
+        x: image1.x + 50
+        y: image1.y + 50
+        width: image1.width
+        height: image1.height
+        shadowColor: "#88000000"
+        source: ShaderEffectSource { sourceItem: image1; hideSource: false; sourceRect: Qt.rect(-10, -10, image1.width + 20, image1.height + 20) }
+        radius: 12.0
+        deviation: 12
+        rotation: r
+    }
+
+    Image {
+        id: image1
+        anchors.fill: parent
+        source: "drop_shadow_small.png"
+        smooth: true
+        rotation: r
+    }
+
+    GaussianDropShadow {
+        x: image2.x + 50
+        y: image2.y + 50
+        width: image2.width
+        height: image2.height
+        shadowColor: "#88000000"
+        source: ShaderEffectSource { sourceItem: image2; hideSource: false; sourceRect: Qt.rect(-10, -10, image2.width + 20, image2.height + 20) }
+        radius: 12.0
+        deviation: 12
+        rotation: -r
+    }
+
+    Image {
+        id: image2
+        anchors.fill: parent
+        source: "drop_shadow_small.png"
+        smooth: true
+        rotation: -r
+    }
+}
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/TestWater.qml b/tests/benchmarks/declarative/qmlshadersplugin/TestWater.qml
new file mode 100755
index 0000000..4d90950
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/TestWater.qml
@@ -0,0 +1,20 @@
+import Qt 4.7
+import Qt.labs.shaders 1.0
+
+Item {
+    width: 360
+    height: 640
+
+    Image {
+        id: image
+        width: parent.width
+        height: parent.height * 0.65
+        source: "sky.jpg"
+        smooth: true
+    }
+    Water {
+        sourceItem: image
+        intensity: 5
+        height: parent.height - image.height
+    }
+}
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/Water.qml b/tests/benchmarks/declarative/qmlshadersplugin/Water.qml
new file mode 100644
index 0000000..02486dd
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/Water.qml
@@ -0,0 +1,85 @@
+import Qt 4.7
+import Qt.labs.shaders 1.0
+
+Item {
+    id: root
+    property alias sourceItem: effectsource.sourceItem
+    property real intensity: 1
+    property bool waving: true
+    anchors.top: sourceItem.bottom
+    width: sourceItem.width
+    height: sourceItem.height
+
+    ShaderEffectItem {
+        anchors.fill: parent
+        property variant source: effectsource
+        property real f: 0
+        property real f2: 0
+        property alias intensity: root.intensity
+        smooth: true
+
+        ShaderEffectSource {
+            id: effectsource
+            hideSource: false
+            smooth: true
+        }
+
+        fragmentShader:
+            "
+            varying highp vec2 qt_TexCoord0;
+            uniform sampler2D source;
+            uniform lowp float qt_Opacity;
+            uniform highp float f;
+            uniform highp float f2;
+            uniform highp float intensity;
+
+            void main() {
+                const highp float twopi = 3.141592653589 * 2.0;
+
+                highp float distanceFactorToPhase = pow(qt_TexCoord0.y + 0.5, 8.0) * 5.0;
+                highp float ofx = sin(f * twopi + distanceFactorToPhase) / 100.0;
+                highp float ofy = sin(f2 * twopi + distanceFactorToPhase * qt_TexCoord0.x) / 60.0;
+
+                highp float intensityDampingFactor = (qt_TexCoord0.x + 0.1) * (qt_TexCoord0.y + 0.2);
+                highp float distanceFactor = (1.0 - qt_TexCoord0.y) * 4.0 * intensity * intensityDampingFactor;
+
+                ofx *= distanceFactor;
+                ofy *= distanceFactor;
+
+                highp float x = qt_TexCoord0.x + ofx;
+                highp float y = 1.0 - qt_TexCoord0.y + ofy;
+
+                highp float fake = (sin((ofy + ofx) * twopi) + 0.5) * 0.05 * (1.2 - qt_TexCoord0.y) * intensity * intensityDampingFactor;
+
+                highp vec4 pix =
+                    texture2D(source, vec2(x, y)) * 0.6 +
+                    texture2D(source, vec2(x-fake, y)) * 0.15 +
+                    texture2D(source, vec2(x, y-fake)) * 0.15 +
+                    texture2D(source, vec2(x+fake, y)) * 0.15 +
+                    texture2D(source, vec2(x, y+fake)) * 0.15;
+
+                highp float darken = 0.6 - (ofx - ofy) / 2.0;
+                pix.b *= 1.2 * darken;
+                pix.r *= 0.9 * darken;
+                pix.g *= darken;
+
+                gl_FragColor = qt_Opacity * vec4(pix.r, pix.g, pix.b, 1.0);
+            }
+            "
+
+        NumberAnimation on f {
+            running: root.waving
+            loops: Animation.Infinite
+            from: 0
+            to: 1
+            duration: 2410
+        }
+        NumberAnimation on f2 {
+            running: root.waving
+            loops: Animation.Infinite
+            from: 0
+            to: 1
+            duration: 1754
+        }
+    }
+}
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/bg.jpg b/tests/benchmarks/declarative/qmlshadersplugin/bg.jpg
new file mode 100644
index 0000000..4d22143
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/bg.jpg
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/drop_shadow_small.png b/tests/benchmarks/declarative/qmlshadersplugin/drop_shadow_small.png
new file mode 100755
index 0000000..4a9b283
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/drop_shadow_small.png
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/qmlshadersplugin.pro b/tests/benchmarks/declarative/qmlshadersplugin/qmlshadersplugin.pro
new file mode 100644
index 0000000..9fb8852
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/qmlshadersplugin.pro
@@ -0,0 +1,23 @@
+QT += opengl declarative testlib
+
+TARGET = tst_performance
+
+SOURCES += \
+    tst_performance.cpp \
+    ../../../../src/imports/shaders/src/shadereffectitem.cpp \
+    ../../../../src/imports/shaders/src/shadereffectsource.cpp \
+    ../../../../src/imports/shaders/src/shadereffect.cpp \
+    ../../../../src/imports/shaders/src/shadereffectbuffer.cpp \
+    ../../../../src/imports/shaders/src/scenegraph/qsggeometry.cpp
+
+HEADERS += \
+    ../../../../src/imports/shaders/src/shadereffectitem.h \
+    ../../../../src/imports/shaders/src/shadereffectsource.h \
+    ../../../../src/imports/shaders/src/shadereffect.h \
+    ../../../../src/imports/shaders/src/shadereffectbuffer.h \
+    ../../../../src/imports/shaders/src/scenegraph/qsggeometry.h
+
+OTHER_FILES += \
+    *.qml \
+    *.png \
+    *.jpg
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/sky.jpg b/tests/benchmarks/declarative/qmlshadersplugin/sky.jpg
new file mode 100644
index 0000000..8fc19ed
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/sky.jpg
diff --git a/tests/benchmarks/declarative/qmlshadersplugin/tst_performance.cpp b/tests/benchmarks/declarative/qmlshadersplugin/tst_performance.cpp
new file mode 100644
index 0000000..6ee6979
--- /dev/null
+++ b/tests/benchmarks/declarative/qmlshadersplugin/tst_performance.cpp
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QML Shaders plugin of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtTest/qtest.h>
+#include <QtDeclarative>
+#include "../../../../src/imports/shaders/src/shadereffectitem.h"
+#include "../../../../src/imports/shaders/src/shadereffectsource.h"
+//#include "../../../src/shadereffect.h"
+
+class BenchmarkItem : public QDeclarativeItem
+{
+    Q_OBJECT
+
+public:
+    BenchmarkItem( QDeclarativeItem * parent = 0 ) : QDeclarativeItem(parent)
+        , m_frameCount(0)
+    {
+        setFlag(QGraphicsItem::ItemHasNoContents, false);
+    }
+
+    void paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
+        QDeclarativeItem::paint(painter, option, widget);
+        if (timer.restart() > 7) m_frameCount++;
+    }
+
+    int frameCount() { return m_frameCount; }
+
+private:
+    int m_frameCount;
+    QTime timer;
+};
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    QDeclarativeView view;
+    view.setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
+    view.setAttribute(Qt::WA_OpaquePaintEvent);
+    view.setAttribute(Qt::WA_NoSystemBackground);
+    view.setResizeMode(QDeclarativeView::SizeViewToRootObject);
+
+    qmlRegisterType<ShaderEffectItem>("Qt.labs.shaders", 1, 0, "ShaderEffectItem");
+    qmlRegisterType<ShaderEffectSource>("Qt.labs.shaders", 1, 0, "ShaderEffectSource");
+
+    QGLFormat format = QGLFormat::defaultFormat();
+    format.setSampleBuffers(false);
+    format.setSwapInterval(1);
+
+    QGLWidget* glWidget = new QGLWidget(format);
+    glWidget->setAutoFillBackground(false);
+    view.setViewport(glWidget);
+    view.show();
+
+    view.setSource(QUrl::fromLocalFile("TestWater.qml"));
+    BenchmarkItem *benchmarkItem;
+
+    qDebug() << "Sea Water benchmark:";
+    benchmarkItem = new BenchmarkItem(dynamic_cast<QDeclarativeItem *>(view.rootObject()));
+    QTest::qWait(5000);
+    qDebug() << "Rendered " << benchmarkItem->frameCount() << " frames in 5 seconds";
+    qDebug() << "Average " << benchmarkItem->frameCount() / 5.0 << " frames per second";
+
+    qDebug() << "Gaussian drop shadow benchmark:";
+    view.setSource(QUrl::fromLocalFile("TestGaussianDropShadow.qml"));
+    benchmarkItem = new BenchmarkItem(dynamic_cast<QDeclarativeItem *>(view.rootObject()));
+    QTest::qWait(5000);
+    qDebug() << "Rendered " << benchmarkItem->frameCount() << " frames in 5 seconds";
+    qDebug() << "Average " << benchmarkItem->frameCount() / 5.0 << " frames per second";
+}
+
+#include "tst_performance.moc"