2307825461
* TiltShift was sometimes applying the effect in the wrong place. * Blur had some QML properties duplicated * Blur kernel wasn't quite summing to 1, and was applying opacity twice * The target width for the second pass was incorrect, so it was blending darkness, resulting in a dreary image. Change-Id: Ib8ba93d979c597cf4d225b3d24d26a22d0cdffc2 Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
76 lines
2.6 KiB
GLSL
76 lines
2.6 KiB
GLSL
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Mobility Components.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// Based on http://kodemongki.blogspot.com/2011/06/kameraku-custom-shader-effects-example.html
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uniform float dividerValue;
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const float step_w = 0.0015625;
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const float step_h = 0.0027778;
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uniform sampler2D source;
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uniform lowp float qt_Opacity;
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varying vec2 qt_TexCoord0;
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vec3 blur()
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{
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vec2 uv = qt_TexCoord0.xy;
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float y = uv.y < 0.4 ? uv.y : 1.0 - uv.y;
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float dist = 8.0 - 20.0 * y;
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vec3 acc = vec3(0.0, 0.0, 0.0);
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for (float y=-2.0; y<=2.0; ++y) {
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for (float x=-2.0; x<=2.0; ++x) {
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acc += texture2D(source, vec2(uv.x + dist * x * step_w, uv.y + 0.5 * dist * y * step_h)).rgb;
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}
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}
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return acc / 25.0;
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}
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void main()
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{
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vec2 uv = qt_TexCoord0.xy;
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vec3 col;
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if (uv.x > dividerValue || (uv.y >= 0.4 && uv.y <= 0.6))
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col = texture2D(source, uv).rgb;
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else
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col = blur();
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gl_FragColor = qt_Opacity * vec4(col, 1.0);
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}
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