blob: 9e54e09704a54ac45ce555f1b668f5874c732ba6 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 1.0
import Qt.labs.shaders 1.0
ShaderEffectItem {
anchors.fill: parent
property variant source
meshResolution: Qt.size(50, 50)
property real topWidth: width / 2
property real bottomWidth: width / 2
property real originalWidth: width
property real originalHeight: height
property real amplitude: 0.1
vertexShader: "
attribute highp vec4 qt_Vertex;
attribute highp vec2 qt_MultiTexCoord0;
uniform highp mat4 qt_ModelViewProjectionMatrix;
varying highp vec2 qt_TexCoord0;
varying lowp float shade;
uniform highp float topWidth;
uniform highp float bottomWidth;
uniform highp float originalWidth;
uniform highp float originalHeight;
uniform highp float amplitude;
void main() {
qt_TexCoord0 = qt_MultiTexCoord0;
highp vec4 shift = vec4(0, 0, 0, 0);
shift.x = qt_Vertex.x * ((originalWidth - topWidth) + (topWidth - bottomWidth) * (qt_Vertex.y / originalHeight)) / originalWidth;
shade = sin(21.9911486 * qt_Vertex.x / originalWidth);
shift.y = amplitude * (originalWidth - topWidth + (topWidth - bottomWidth) * (qt_Vertex.y / originalHeight)) * shade;
gl_Position = qt_ModelViewProjectionMatrix * (qt_Vertex - shift);
shade = 0.2 * (2.0 - shade ) * (1.0 - (bottomWidth + (topWidth - bottomWidth) * (1.0 - qt_Vertex.y / originalHeight)) / originalWidth);
}
"
fragmentShader: "
uniform sampler2D source;
varying highp vec2 qt_TexCoord0;
varying lowp float shade;
void main() {
highp vec4 color = texture2D(source, qt_TexCoord0);
color.rgb *= 1.0 - shade;
gl_FragColor = color;
}
"
}
|
