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Diffstat (limited to 'basicsuite/Media Player/Effects/EffectGaussianBlur.qml')
| -rwxr-xr-x | basicsuite/Media Player/Effects/EffectGaussianBlur.qml | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/basicsuite/Media Player/Effects/EffectGaussianBlur.qml b/basicsuite/Media Player/Effects/EffectGaussianBlur.qml new file mode 100755 index 0000000..f866524 --- /dev/null +++ b/basicsuite/Media Player/Effects/EffectGaussianBlur.qml @@ -0,0 +1,136 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +// Based on http://www.geeks3d.com/20100909/shader-library-gaussian-blur-post-processing-filter-in-glsl/ + +import QtQuick 2.0 + +Item { + id: root + property bool divider: true + property real dividerValue: 1 + property ListModel parameters: ListModel { + ListElement { + name: "radius" + value: 0.5 + } + } + + property alias targetWidth: verticalShader.targetWidth + property alias targetHeight: verticalShader.targetHeight + property alias source: verticalShader.source + + Effect { + id: verticalShader + anchors.fill: parent + dividerValue: parent.dividerValue + property real blurSize: 4.0 * parent.parameters.get(0).value / targetHeight + fragmentShaderSrc: "uniform float dividerValue; + uniform float blurSize; + + uniform sampler2D source; + uniform lowp float qt_Opacity; + varying vec2 qt_TexCoord0; + + void main() + { + vec2 uv = qt_TexCoord0.xy; + vec4 c = vec4(0.0); + if (uv.x < dividerValue) { + c += texture2D(source, uv - vec2(0.0, 4.0*blurSize)) * 0.05; + c += texture2D(source, uv - vec2(0.0, 3.0*blurSize)) * 0.09; + c += texture2D(source, uv - vec2(0.0, 2.0*blurSize)) * 0.12; + c += texture2D(source, uv - vec2(0.0, 1.0*blurSize)) * 0.15; + c += texture2D(source, uv) * 0.18; + c += texture2D(source, uv + vec2(0.0, 1.0*blurSize)) * 0.15; + c += texture2D(source, uv + vec2(0.0, 2.0*blurSize)) * 0.12; + c += texture2D(source, uv + vec2(0.0, 3.0*blurSize)) * 0.09; + c += texture2D(source, uv + vec2(0.0, 4.0*blurSize)) * 0.05; + } else { + c = texture2D(source, qt_TexCoord0); + } + // First pass we don't apply opacity + gl_FragColor = c; + }" + } + + Effect { + id: horizontalShader + anchors.fill: parent + dividerValue: parent.dividerValue + property real blurSize: 4.0 * parent.parameters.get(0).value / parent.targetWidth + fragmentShaderSrc: "uniform float dividerValue; + uniform float blurSize; + + uniform sampler2D source; + uniform lowp float qt_Opacity; + varying vec2 qt_TexCoord0; + + void main() + { + vec2 uv = qt_TexCoord0.xy; + vec4 c = vec4(0.0); + if (uv.x < dividerValue) { + c += texture2D(source, uv - vec2(4.0*blurSize, 0.0)) * 0.05; + c += texture2D(source, uv - vec2(3.0*blurSize, 0.0)) * 0.09; + c += texture2D(source, uv - vec2(2.0*blurSize, 0.0)) * 0.12; + c += texture2D(source, uv - vec2(1.0*blurSize, 0.0)) * 0.15; + c += texture2D(source, uv) * 0.18; + c += texture2D(source, uv + vec2(1.0*blurSize, 0.0)) * 0.15; + c += texture2D(source, uv + vec2(2.0*blurSize, 0.0)) * 0.12; + c += texture2D(source, uv + vec2(3.0*blurSize, 0.0)) * 0.09; + c += texture2D(source, uv + vec2(4.0*blurSize, 0.0)) * 0.05; + } else { + c = texture2D(source, qt_TexCoord0); + } + gl_FragColor = qt_Opacity * c; + }" + source: horizontalShaderSource + + ShaderEffectSource { + id: horizontalShaderSource + sourceItem: verticalShader + smooth: true + hideSource: true + } + } +} + |