bc7d964a05
Change-Id: Ib82c1be5548443ef1f5e97b3d5641a2f55d212af Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
74 lines
2.6 KiB
GLSL
74 lines
2.6 KiB
GLSL
/****************************************************************************
|
|
**
|
|
** 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 Qt Mobility Components.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
** 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.
|
|
**
|
|
**
|
|
**
|
|
**
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
// Based on http://www.geeks3d.com/20091116/shader-library-2d-shockwave-post-processing-filter-glsl/
|
|
|
|
uniform float centerX;
|
|
uniform float centerY;
|
|
uniform float dividerValue;
|
|
uniform float granularity;
|
|
uniform float time;
|
|
uniform float weight;
|
|
|
|
uniform sampler2D source;
|
|
uniform lowp float qt_Opacity;
|
|
varying vec2 qt_TexCoord0;
|
|
|
|
void main()
|
|
{
|
|
vec2 uv = qt_TexCoord0.xy;
|
|
vec2 tc = qt_TexCoord0;
|
|
vec2 center = vec2(centerX, centerY);
|
|
const vec3 shock = vec3(10.0, 1.5, 0.1);
|
|
if (uv.x < dividerValue) {
|
|
float distance = distance(uv, center);
|
|
if ((distance <= (time + shock.z)) &&
|
|
(distance >= (time - shock.z))) {
|
|
float diff = (distance - time);
|
|
float powDiff = 1.0 - pow(abs(diff*shock.x), shock.y*weight);
|
|
float diffTime = diff * powDiff;
|
|
vec2 diffUV = normalize(uv - center);
|
|
tc += (diffUV * diffTime);
|
|
}
|
|
}
|
|
gl_FragColor = qt_Opacity * texture2D(source, tc);
|
|
}
|