diff options
Diffstat (limited to 'examples/declarative/shadereffects/qml/shadereffects/RadialWaveEffect.qml')
-rw-r--r-- | examples/declarative/shadereffects/qml/shadereffects/RadialWaveEffect.qml | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/examples/declarative/shadereffects/qml/shadereffects/RadialWaveEffect.qml b/examples/declarative/shadereffects/qml/shadereffects/RadialWaveEffect.qml new file mode 100644 index 00000000..f5127d1e --- /dev/null +++ b/examples/declarative/shadereffects/qml/shadereffects/RadialWaveEffect.qml @@ -0,0 +1,81 @@ +/**************************************************************************** +** +** Copyright (C) 2012 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +import QtQuick 1.0 +import Qt.labs.shaders 1.0 + +ShaderEffectItem { + id: effect + + property real wave: 0.3 + property real waveOriginX: 0.5 + property real waveOriginY: 0.5 + property real waveWidth: 0.01 + property real aspectRatio: width/height + property variant source: 0 + + fragmentShader: + " + varying mediump vec2 qt_TexCoord0; + uniform sampler2D source; + uniform highp float wave; + uniform highp float waveWidth; + uniform highp float waveOriginX; + uniform highp float waveOriginY; + uniform highp float aspectRatio; + + void main(void) + { + mediump vec2 texCoord2 = qt_TexCoord0; + mediump vec2 origin = vec2(waveOriginX, (1.0 - waveOriginY) / aspectRatio); + + highp float fragmentDistance = distance(vec2(texCoord2.s, texCoord2.t / aspectRatio), origin); + highp float waveLength = waveWidth + fragmentDistance * 0.25; + + if ( fragmentDistance > wave && fragmentDistance < wave + waveLength) { + highp float distanceFromWaveEdge = min(abs(wave - fragmentDistance), abs(wave + waveLength - fragmentDistance)); + texCoord2 += sin(1.57075 * distanceFromWaveEdge / waveLength) * distanceFromWaveEdge * 0.08 / fragmentDistance; + } + + gl_FragColor = texture2D(source, texCoord2.st); + } + " +} |