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+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** 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, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.0
+
+Effect {
+ parameters: ListModel {
+ ListElement {
+ name: "grid spacing"
+ value: 0.5
+ }
+ }
+
+ // Transform slider values, and bind result to shader uniforms
+ property real grid: parameters.get(0).value * 10
+
+ property real step_x: 0.0015625
+ property real step_y: targetHeight ? (step_x * targetWidth / targetHeight) : 0.0
+
+ fragmentShaderSrc: "uniform float grid;
+ uniform float dividerValue;
+ uniform float step_x;
+ uniform float step_y;
+
+ uniform sampler2D source;
+ uniform lowp float qt_Opacity;
+ varying vec2 qt_TexCoord0;
+
+ void main()
+ {
+ vec2 uv = qt_TexCoord0.xy;
+ float offx = floor(uv.x / (grid * step_x));
+ float offy = floor(uv.y / (grid * step_y));
+ vec3 res = texture2D(source, vec2(offx * grid * step_x , offy * grid * step_y)).rgb;
+ vec2 prc = fract(uv / vec2(grid * step_x, grid * step_y));
+ vec2 pw = pow(abs(prc - 0.5), vec2(2.0));
+ float rs = pow(0.45, 2.0);
+ float gr = smoothstep(rs - 0.1, rs + 0.1, pw.x + pw.y);
+ float y = (res.r + res.g + res.b) / 3.0;
+ vec3 ra = res / y;
+ float ls = 0.3;
+ float lb = ceil(y / ls);
+ float lf = ls * lb + 0.3;
+ res = lf * res;
+ vec3 col = mix(res, vec3(0.1, 0.1, 0.1), gr);
+ if (uv.x < dividerValue)
+ gl_FragColor = qt_Opacity * vec4(col, 1.0);
+ else
+ gl_FragColor = qt_Opacity * texture2D(source, uv);
+ }"
+}