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<h1 class="title">WaterEffect.qml Example File</h1>
<span class="small-subtitle">declarative/shadereffects/qml/shadereffects/WaterEffect.qml</span>
<!-- $$$declarative/shadereffects/qml/shadereffects/WaterEffect.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
import QtQuick 1.0
import Qt.labs.shaders 1.0
<span class="type"><a href="qml-item.html">Item</a></span> {
<span class="name">id</span>: <span class="name">root</span>
property <span class="type">alias</span> <span class="name">sourceItem</span>: <span class="name">effectsource</span>.<span class="name">sourceItem</span>
property <span class="type">real</span> <span class="name">intensity</span>: <span class="number">1</span>
property <span class="type">bool</span> <span class="name">waving</span>: <span class="number">true</span>
<span class="name">anchors</span>.top: <span class="name">sourceItem</span>.<span class="name">bottom</span>
<span class="name">width</span>: <span class="name">sourceItem</span>.<span class="name">width</span>
<span class="name">height</span>: <span class="name">sourceItem</span>.<span class="name">height</span>
<span class="type"><a href="qml-shadereffectitem.html">ShaderEffectItem</a></span> {
<span class="name">anchors</span>.fill: <span class="name">parent</span>
property <span class="type">variant</span> <span class="name">source</span>: <span class="name">effectsource</span>
property <span class="type">real</span> <span class="name">f</span>: <span class="number">0</span>
property <span class="type">real</span> <span class="name">f2</span>: <span class="number">0</span>
property <span class="type">alias</span> <span class="name">intensity</span>: <span class="name">root</span>.<span class="name">intensity</span>
<span class="name">smooth</span>: <span class="number">true</span>
<span class="type"><a href="qml-shadereffectsource.html">ShaderEffectSource</a></span> {
<span class="name">id</span>: <span class="name">effectsource</span>
<span class="name">hideSource</span>: <span class="number">false</span>
<span class="name">smooth</span>: <span class="number">true</span>
}
<span class="name">fragmentShader</span>:
<span class="string">&quot;
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);
}
&quot;</span>
NumberAnimation on <span class="name">f</span> {
<span class="name">running</span>: <span class="name">root</span>.<span class="name">waving</span>
<span class="name">loops</span>: <span class="name">Animation</span>.<span class="name">Infinite</span>
<span class="name">from</span>: <span class="number">0</span>
<span class="name">to</span>: <span class="number">1</span>
<span class="name">duration</span>: <span class="number">2410</span>
}
NumberAnimation on <span class="name">f2</span> {
<span class="name">running</span>: <span class="name">root</span>.<span class="name">waving</span>
<span class="name">loops</span>: <span class="name">Animation</span>.<span class="name">Infinite</span>
<span class="name">from</span>: <span class="number">0</span>
<span class="name">to</span>: <span class="number">1</span>
<span class="name">duration</span>: <span class="number">1754</span>
}
}
}</pre>
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