diff options
Diffstat (limited to 'demos/video/qmlvideofx/shaders/pixelate.fsh')
-rw-r--r-- | demos/video/qmlvideofx/shaders/pixelate.fsh | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/demos/video/qmlvideofx/shaders/pixelate.fsh b/demos/video/qmlvideofx/shaders/pixelate.fsh new file mode 100644 index 0000000000..577e2582af --- /dev/null +++ b/demos/video/qmlvideofx/shaders/pixelate.fsh @@ -0,0 +1,64 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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/20101029/shader-library-pixelation-post-processing-effect-glsl/ + +uniform float dividerValue; +uniform float granularity; +uniform float targetWidth; +uniform float targetHeight; + +uniform sampler2D source; +uniform lowp float qt_Opacity; +varying vec2 qt_TexCoord0; + +void main() +{ + vec2 uv = qt_TexCoord0.xy; + vec2 tc = qt_TexCoord0; + if (uv.x < dividerValue && granularity > 0.0) { + float dx = granularity / targetWidth; + float dy = granularity / targetHeight; + tc = vec2(dx*(floor(uv.x/dx) + 0.5), + dy*(floor(uv.y/dy) + 0.5)); + } + gl_FragColor = qt_Opacity * texture2D(source, tc); +} |