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Diffstat (limited to 'demos/video/qmlvideofx/shaders/billboard.fsh')
-rw-r--r-- | demos/video/qmlvideofx/shaders/billboard.fsh | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/demos/video/qmlvideofx/shaders/billboard.fsh b/demos/video/qmlvideofx/shaders/billboard.fsh new file mode 100644 index 0000000000..0264f450c6 --- /dev/null +++ b/demos/video/qmlvideofx/shaders/billboard.fsh @@ -0,0 +1,74 @@ +/**************************************************************************** +** +** 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://kodemongki.blogspot.com/2011/06/kameraku-custom-shader-effects-example.html + +uniform float grid; +uniform float dividerValue; +uniform float step_x; +uniform float step_y; + +uniform sampler2D source; +uniform lowp float qt_Opacity; +varying vec2 qt_TexCoord0; + +void main() +{ + vec2 uv = qt_TexCoord0.xy; + float offx = floor(uv.x / (grid * step_x)); + float offy = floor(uv.y / (grid * step_y)); + vec3 res = texture2D(source, vec2(offx * grid * step_x , offy * grid * step_y)).rgb; + vec2 prc = fract(uv / vec2(grid * step_x, grid * step_y)); + vec2 pw = pow(abs(prc - 0.5), vec2(2.0)); + float rs = pow(0.45, 2.0); + float gr = smoothstep(rs - 0.1, rs + 0.1, pw.x + pw.y); + float y = (res.r + res.g + res.b) / 3.0; + vec3 ra = res / y; + float ls = 0.3; + float lb = ceil(y / ls); + float lf = ls * lb + 0.3; + res = lf * res; + vec3 col = mix(res, vec3(0.1, 0.1, 0.1), gr); + if (uv.x < dividerValue) + gl_FragColor = qt_Opacity * vec4(col, 1.0); + else + gl_FragColor = qt_Opacity * texture2D(source, uv); +} |