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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt scene graph research project.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.0
ShaderEffectItem
{
fragmentShader:
"varying highp vec2 qt_TexCoord; \n" +
"varying highp vec2 my_TexCoord2; \n" +
"varying highp vec2 my_TexCoord3; \n" +
"varying highp vec2 my_TexCoord4; \n" +
"uniform lowp sampler2D source; \n" +
"uniform highp float qt_Opacity; \n" +
"void main() { \n" +
" gl_FragColor = qt_Opacity * (texture2D(source, qt_TexCoord) \n" +
" + texture2D(source, my_TexCoord2) \n" +
" + texture2D(source, my_TexCoord3) \n" +
" + texture2D(source, my_TexCoord4)) * 0.25; \n" +
"}"
vertexShader:
"attribute highp vec4 qt_Vertex; \n" +
"attribute highp vec2 qt_MultiTexCoord0; \n" +
"uniform highp mat4 qt_Matrix; \n" +
"uniform highp float xOffset; \n" +
"uniform highp float yOffset; \n" +
"uniform highp vec2 _normMargins; \n" +
"varying highp vec2 qt_TexCoord; \n" +
"varying highp vec2 my_TexCoord2; \n" +
"varying highp vec2 my_TexCoord3; \n" +
"varying highp vec2 my_TexCoord4; \n" +
"void main() { \n" +
" highp vec2 s1 = vec2(xOffset, yOffset); \n" +
" highp vec2 s2 = vec2(-xOffset, yOffset); \n" +
" highp vec2 tcoord = mix(_normMargins, \n" +
" qt_MultiTexCoord0 - _normMargins, qt_MultiTexCoord0); \n" +
" qt_TexCoord = tcoord + s1; \n" +
" my_TexCoord2 = tcoord - s1; \n" +
" my_TexCoord3 = tcoord + s2; \n" +
" my_TexCoord4 = tcoord - s2; \n" +
" gl_Position = qt_Matrix * qt_Vertex; \n" +
"}"
property real xOffset: 0.5 / width
property real yOffset: 0.5 / height
property variant _normMargins: Qt.size(margins.width / (2 * margins.width + width), margins.height / (2 * margins.height + height))
property variant margins: "margins" in source ? source.margins : Qt.size(0, 0)
active: true
blending: true
property variant source
}
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