1/****************************************************************************
2**
3** Copyright (C) 2017 The Qt Company Ltd.
4** Contact: http://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#ifndef GLWIDGET_H
52#define GLWIDGET_H
53
54#include <QOpenGLWindow>
55#include <QOpenGLTexture>
56#include <QMatrix4x4>
57#include <QVector3D>
58#include <QKeyEvent>
59#include <QPropertyAnimation>
60#include <QSequentialAnimationGroup>
61#include <QRectF>
62
63QT_BEGIN_NAMESPACE
64
65class QOpenGLTexture;
66class QOpenGLShaderProgram;
67class QOpenGLBuffer;
68class QOpenGLVertexArrayObject;
69
70QT_END_NAMESPACE
71
72class GLWindow : public QOpenGLWindow
73{
74 Q_OBJECT
75 Q_PROPERTY(float blurRadius READ blurRadius WRITE setBlurRadius)
76
77public:
78 GLWindow();
79 ~GLWindow();
80
81 void initializeGL() override;
82 void resizeGL(int w, int h) override;
83 void paintGL() override;
84
85 float blurRadius() const { return m_blurRadius; }
86 void setBlurRadius(float blurRadius);
87
88protected:
89 void keyPressEvent(QKeyEvent *e) override;
90 void setAnimating(bool animate);
91
92private:
93 QPropertyAnimation *m_animationForward = nullptr;
94 QPropertyAnimation *m_animationBackward = nullptr;
95 QSequentialAnimationGroup *m_animationGroup;
96 QOpenGLTexture *m_texImageInput = nullptr;
97 QOpenGLTexture *m_texImageTmp = nullptr;
98 QOpenGLTexture *m_texImageProcessed = nullptr;
99 QOpenGLShaderProgram *m_shaderDisplay = nullptr;
100 QOpenGLShaderProgram *m_shaderComputeV = nullptr;
101 QOpenGLShaderProgram *m_shaderComputeH = nullptr;
102 QMatrix4x4 m_proj;
103 QSizeF m_quadSize;
104
105 int m_blurRadius = 0;
106 bool m_animate = true;
107 QOpenGLVertexArrayObject *m_vao = nullptr;
108};
109
110#endif
111

source code of qtbase/examples/opengl/computegles31/glwindow.h