Merge remote-tracking branch 'qt/4.8'

1 files changed, 174 insertions, 0 deletions

diff --git a/examples/declarative/shadereffects/qml/DropShadowEffect.qml b/examples/declarative/shadereffects/qml/DropShadowEffect.qml
new file mode 100755
index 0000000..b9903a3
--- /dev/null
+++ b/examples/declarative/shadereffects/qml/DropShadowEffect.qml
@@ -0,0 +1,174 @@
+/****************************************************************************
+**
+** 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 examples 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 1.0
+import Qt.labs.shaders 1.0
+
+Item {
+    id: main
+    property real blur: 0.0
+    property alias color: shadowEffectWithHBlur.color
+    property alias sourceItem: source.sourceItem
+
+    ShaderEffectSource {
+        id: source
+        smooth: true
+        hideSource: false
+    }
+
+    ShaderEffectItem {
+        id: shadowEffectWithHBlur
+        anchors.fill: parent
+
+        property color color: "grey"
+        property variant sourceTexture: source;
+        property real xStep: main.blur / main.width
+
+        vertexShader:"
+            uniform highp mat4 qt_ModelViewProjectionMatrix;
+            attribute highp vec4 qt_Vertex;
+            attribute highp vec2 qt_MultiTexCoord0;
+            uniform highp float xStep;
+            varying highp vec2 qt_TexCoord0;
+            varying highp vec2 qt_TexCoord1;
+            varying highp vec2 qt_TexCoord2;
+            varying highp vec2 qt_TexCoord4;
+            varying highp vec2 qt_TexCoord5;
+            varying highp vec2 qt_TexCoord6;
+
+            void main(void)
+            {
+                highp vec2 shift = vec2(xStep, 0.);
+                qt_TexCoord0 = qt_MultiTexCoord0 - 2.5 * shift;
+                qt_TexCoord1 = qt_MultiTexCoord0 - 1.5 * shift;
+                qt_TexCoord2 = qt_MultiTexCoord0 - 0.5 * shift;
+                qt_TexCoord4 = qt_MultiTexCoord0 + 0.5 * shift;
+                qt_TexCoord5 = qt_MultiTexCoord0 + 1.5 * shift;
+                qt_TexCoord6 = qt_MultiTexCoord0 + 2.5 * shift;
+                gl_Position =  qt_ModelViewProjectionMatrix * qt_Vertex;
+            }
+        "
+
+        fragmentShader:"
+            uniform highp vec4 color;
+            uniform lowp sampler2D sourceTexture;
+            varying highp vec2 qt_TexCoord0;
+            varying highp vec2 qt_TexCoord1;
+            varying highp vec2 qt_TexCoord2;
+            varying highp vec2 qt_TexCoord4;
+            varying highp vec2 qt_TexCoord5;
+            varying highp vec2 qt_TexCoord6;
+
+            void main() {
+                highp vec4 sourceColor = (texture2D(sourceTexture, qt_TexCoord0) * 0.1
+                + texture2D(sourceTexture, qt_TexCoord1) * 0.15
+                + texture2D(sourceTexture, qt_TexCoord2) * 0.25
+                + texture2D(sourceTexture, qt_TexCoord4) * 0.25
+                + texture2D(sourceTexture, qt_TexCoord5) * 0.15
+                + texture2D(sourceTexture, qt_TexCoord6) * 0.1);
+                gl_FragColor = mix(vec4(0), color, sourceColor.a);
+            }
+        "
+    }
+
+    ShaderEffectSource {
+        id: hBlurredShadow
+        smooth: true
+        sourceItem: shadowEffectWithHBlur
+        hideSource: true
+    }
+
+    ShaderEffectItem {
+        id: finalEffect
+        anchors.fill: parent
+
+        property color color: "grey"
+        property variant sourceTexture: hBlurredShadow;
+        property real yStep: main.blur / main.height
+
+        vertexShader:"
+            uniform highp mat4 qt_ModelViewProjectionMatrix;
+            attribute highp vec4 qt_Vertex;
+            attribute highp vec2 qt_MultiTexCoord0;
+            uniform highp float yStep;
+            varying highp vec2 qt_TexCoord0;
+            varying highp vec2 qt_TexCoord1;
+            varying highp vec2 qt_TexCoord2;
+            varying highp vec2 qt_TexCoord4;
+            varying highp vec2 qt_TexCoord5;
+            varying highp vec2 qt_TexCoord6;
+
+            void main(void)
+            {
+                highp vec2 shift = vec2(0., yStep);
+                qt_TexCoord0 = qt_MultiTexCoord0 - 2.5 * shift;
+                qt_TexCoord1 = qt_MultiTexCoord0 - 1.5 * shift;
+                qt_TexCoord2 = qt_MultiTexCoord0 - 0.5 * shift;
+                qt_TexCoord4 = qt_MultiTexCoord0 + 0.5 * shift;
+                qt_TexCoord5 = qt_MultiTexCoord0 + 1.5 * shift;
+                qt_TexCoord6 = qt_MultiTexCoord0 + 2.5 * shift;
+                gl_Position =  qt_ModelViewProjectionMatrix * qt_Vertex;
+            }
+        "
+
+        fragmentShader:"
+            uniform highp vec4 color;
+            uniform lowp sampler2D sourceTexture;
+            uniform highp float qt_Opacity;
+            varying highp vec2 qt_TexCoord0;
+            varying highp vec2 qt_TexCoord1;
+            varying highp vec2 qt_TexCoord2;
+            varying highp vec2 qt_TexCoord4;
+            varying highp vec2 qt_TexCoord5;
+            varying highp vec2 qt_TexCoord6;
+
+            void main() {
+                highp vec4 sourceColor = (texture2D(sourceTexture, qt_TexCoord0) * 0.1
+                + texture2D(sourceTexture, qt_TexCoord1) * 0.15
+                + texture2D(sourceTexture, qt_TexCoord2) * 0.25
+                + texture2D(sourceTexture, qt_TexCoord4) * 0.25
+                + texture2D(sourceTexture, qt_TexCoord5) * 0.15
+                + texture2D(sourceTexture, qt_TexCoord6) * 0.1);
+                gl_FragColor = sourceColor * qt_Opacity;
+            }
+        "
+    }
+}