From 6b4994c265889db2058b7d5850b51ddfc5478754 Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@digia.com>
Date: Wed, 5 Dec 2012 13:03:09 +0100
Subject: centralize and fixup example sources install targets

This follows suit with aeb036e in qtbase.

Change-Id: Ie8580d0a1f38ab9858b0e44c9f99bdc552a1752a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: hjk <qthjk@ovi.com>
---
 .../video/qmlvideofx/shaders/isolate.fsh           | 88 ++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 examples/multimedia/video/qmlvideofx/shaders/isolate.fsh

(limited to 'examples/multimedia/video/qmlvideofx/shaders/isolate.fsh')

diff --git a/examples/multimedia/video/qmlvideofx/shaders/isolate.fsh b/examples/multimedia/video/qmlvideofx/shaders/isolate.fsh
new file mode 100644
index 000000000..0f25bfab3
--- /dev/null
+++ b/examples/multimedia/video/qmlvideofx/shaders/isolate.fsh
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** 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://kodemongki.blogspot.com/2011/06/kameraku-custom-shader-effects-example.html
+
+uniform float targetHue;
+uniform float windowWidth;
+uniform float dividerValue;
+
+uniform sampler2D source;
+uniform lowp float qt_Opacity;
+varying vec2 qt_TexCoord0;
+
+void rgb2hsl(vec3 rgb, out float h, out float s, float l)
+{
+    float maxval = max(rgb.r, max(rgb.g, rgb.b));
+    float minval = min(rgb.r, min(rgb.g, rgb.b));
+    float delta = maxval - minval;
+    l = (minval + maxval) / 2.0;
+    s = 0.0;
+    if (l > 0.0 && l < 1.0)
+        s = delta / (l < 0.5 ? 2.0 * l : 2.0 - 2.0 * l);
+    h = 0.0;
+    if (delta > 0.0)
+    {
+        if (rgb.r == maxval && rgb.g != maxval)
+            h += (rgb.g - rgb.b ) / delta;
+        if (rgb.g == maxval && rgb.b != maxval)
+            h += 2.0  + (rgb.b - rgb.r) / delta;
+        if (rgb.b == maxval && rgb.r != maxval)
+            h += 4.0 + (rgb.r - rgb.g) / delta;
+        h *= 60.0;
+    }
+}
+
+void main()
+{
+    vec2 uv = qt_TexCoord0.xy;
+    vec3 col = texture2D(source, uv).rgb;
+    float h, s, l;
+    rgb2hsl(col, h, s, l);
+    float h2 = (h > targetHue) ? h - 360.0 : h + 360.0;
+    float y = 0.3 * col.r + 0.59 * col.g + 0.11 * col.b;
+    vec3 result;
+    if (uv.x > dividerValue || (abs(h - targetHue) < windowWidth) || (abs(h2 - targetHue) < windowWidth))
+        result = col;
+    else
+        result = vec3(y, y, y);
+    gl_FragColor = qt_Opacity * vec4(result, 1.0);
+}
-- 
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