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-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies).
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the Qt Mobility Components.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, you may use this file under the terms of the BSD license
-** as follows:
-**
-** "Redistribution and use in source and binary forms, with or without
-** modification, are permitted provided that the following conditions are
-** met:
-** * Redistributions of source code must retain the above copyright
-** notice, this list of conditions and the following disclaimer.
-** * Redistributions in binary form must reproduce the above copyright
-** notice, this list of conditions and the following disclaimer in
-** the documentation and/or other materials provided with the
-** distribution.
-** * Neither the name of The Qt Company Ltd nor the names of its
-** contributors may be used to endorse or promote products derived
-** from this software without specific prior written permission.
-**
-**
-** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-// Based on http://kodemongki.blogspot.com/2011/06/kameraku-custom-shader-effects-example.html
-
-uniform float dividerValue;
-const float step_w = 0.0015625;
-const float step_h = 0.0027778;
-
-uniform sampler2D source;
-uniform lowp float qt_Opacity;
-varying vec2 qt_TexCoord0;
-
-void main()
-{
- vec2 uv = qt_TexCoord0.xy;
- vec3 t1 = texture2D(source, vec2(uv.x - step_w, uv.y - step_h)).rgb;
- vec3 t2 = texture2D(source, vec2(uv.x, uv.y - step_h)).rgb;
- vec3 t3 = texture2D(source, vec2(uv.x + step_w, uv.y - step_h)).rgb;
- vec3 t4 = texture2D(source, vec2(uv.x - step_w, uv.y)).rgb;
- vec3 t5 = texture2D(source, uv).rgb;
- vec3 t6 = texture2D(source, vec2(uv.x + step_w, uv.y)).rgb;
- vec3 t7 = texture2D(source, vec2(uv.x - step_w, uv.y + step_h)).rgb;
- vec3 t8 = texture2D(source, vec2(uv.x, uv.y + step_h)).rgb;
- vec3 t9 = texture2D(source, vec2(uv.x + step_w, uv.y + step_h)).rgb;
- vec3 rr = -4.0 * t1 - 4.0 * t2 - 4.0 * t4 + 12.0 * t5;
- float y = (rr.r + rr.g + rr.b) / 3.0;
- vec3 col = vec3(y, y, y) + 0.3;
- if (uv.x < dividerValue)
- gl_FragColor = qt_Opacity * vec4(col, 1.0);
- else
- gl_FragColor = qt_Opacity * texture2D(source, uv);
-}