Merge remote-tracking branch 'qt/4.8'

1 files changed, 62 insertions, 0 deletions

diff --git a/examples/declarative/shadereffects/qml/GrayscaleEffect.qml b/examples/declarative/shadereffects/qml/GrayscaleEffect.qml
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+/****************************************************************************
+**
+** 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
+
+ShaderEffectItem {
+    id: effect
+    property real ratio: 1.0
+    property variant source: 0
+
+    fragmentShader:
+        "
+        varying highp vec2 qt_TexCoord0;
+        uniform sampler2D source;
+        uniform highp float ratio;
+        void main(void)
+        {
+            lowp vec4 textureColor = texture2D(source, qt_TexCoord0.st);
+            lowp float gray = dot(textureColor, vec4(0.299, 0.587, 0.114, 0.0));
+            gl_FragColor = vec4(gray * ratio + textureColor.r * (1.0 - ratio), gray * ratio + textureColor.g * (1.0 - ratio), gray * ratio + textureColor.b * (1.0 - ratio), textureColor.a);
+        }
+        "
+}