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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QDebug>
#include <QtCore/QLoggingCategory>
#include <QtCore/QOperatingSystemVersion>
#include <QtGui/QOpenGLContext>
#include <QtGui/QSurfaceFormat>
#include <QtWidgets/QApplication>
#include <QtWidgets/QDesktopWidget>
#include <QtWidgets/QGroupBox>
#include <QtWidgets/QHBoxLayout>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QVBoxLayout>
#include <QtWebEngineWidgets/QWebEngineView>
// Manual test for checking if WebGL (1 or 2) works.
// Set environment variable QTWEBENGINE_GL_TYPE to one of the following to try and switch
// the underlying GL implementation (mostly Windows): "desktop", "gles", "gles3", "software".
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = nullptr);
QSize sizeHint() const;
private:
QWebEngineView *view = nullptr;
};
MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
{
QWidget *centralWidget = new QWidget;
QGroupBox *horizontalGroupBox = new QGroupBox;
QHBoxLayout *buttonLayout = new QHBoxLayout;
QPushButton *exButton1 = new QPushButton(QStringLiteral("Aquarium (WebGL 1)"));
QPushButton *exButton2 = new QPushButton(QStringLiteral("Lots of objects (WebGL 1)"));
QPushButton *exButton3 = new QPushButton(QStringLiteral("Instanced triangles (WebGL 2)"));
buttonLayout->addWidget(exButton1);
buttonLayout->addWidget(exButton2);
buttonLayout->addWidget(exButton3);
horizontalGroupBox->setLayout(buttonLayout);
const QUrl exUrl1 =
QUrl(QStringLiteral(
"http://webglsamples.org/aquarium/aquarium.html"));
const QUrl exUrl2 =
QUrl(QStringLiteral(
"http://webglsamples.org/lots-o-objects/lots-o-objects-draw-elements.html"));
const QUrl exUrl3 =
QUrl(QStringLiteral(
"http://webglsamples.org/WebGL2Samples/#transform_feedback_instanced"));
view = new QWebEngineView;
connect(exButton1, &QPushButton::clicked, view, [=](){
view->setUrl(exUrl1);
});
connect(exButton2, &QPushButton::clicked, view, [=](){
view->setUrl(exUrl2);
});
connect(exButton3, &QPushButton::clicked, view, [=](){
view->setUrl(exUrl3);
});
QVBoxLayout *centralLayout = new QVBoxLayout;
centralLayout->addWidget(horizontalGroupBox);
centralLayout->addWidget(view, 1);
centralWidget->setLayout(centralLayout);
setCentralWidget(centralWidget);
view->setUrl(QUrl(QStringLiteral("http://webglsamples.org/aquarium/aquarium.html")));
setWindowTitle(tr("WebGL 1 and 2 examples"));
}
QSize MainWindow::sizeHint() const
{
const QRect desktopRect = QApplication::desktop()->screenGeometry();
const QSize size = desktopRect.size() * qreal(0.9);
return size;
}
bool isWindows()
{
return QOperatingSystemVersion::currentType() == QOperatingSystemVersion::Windows;
}
// Easy snippets to copy to command line for testing for UNIX only.
// QTWEBENGINE_GL_TYPE=desktop ./webgl
// QTWEBENGINE_GL_TYPE=gles ./webgl
// QTWEBENGINE_GL_TYPE=gles3 ./webgl
// QTWEBENGINE_GL_TYPE=software ./webgl
int main(int argc, char *argv[])
{
// Not all options are relevant for all platforms.
const QString desktopGL = QStringLiteral("desktop");
const QString angle = QStringLiteral("angle"); // Same as gles really, just an alias.
const QString gles = QStringLiteral("gles"); // ANGLE on Windows.
const QString gles3 = QStringLiteral("gles3"); // ANGLE on Windows.
const QString softwareGL = QStringLiteral("software");
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
QString glType = qEnvironmentVariable("QTWEBENGINE_GL_TYPE");
if (glType.isEmpty()) {
if (isWindows())
glType = gles3;
else
glType = desktopGL;
}
if (glType == desktopGL) {
QApplication::setAttribute(Qt::AA_UseDesktopOpenGL);
qInfo() << QStringLiteral("Trying to use Desktop OpenGL.\n");
} else if (glType == gles || glType == gles3 || glType == angle) {
QApplication::setAttribute(Qt::AA_UseOpenGLES);
if (glType == gles || glType == angle)
qInfo() << QStringLiteral("Trying to use OpenGL ES 2.\n");
if (glType == gles3)
qInfo() << QStringLiteral("Trying to use OpenGL ES 3.\n");
} else if (glType == softwareGL) {
QApplication::setAttribute(Qt::AA_UseSoftwareOpenGL);
qInfo() << QStringLiteral("Trying to use software OpenGL.\n");
}
if (glType == gles3) {
// Set OpenGL ES version 3.
QSurfaceFormat format;
format.setSamples(4);
format.setDepthBufferSize(24);
format.setStencilBufferSize(8);
format.setVersion(3, 0);
QSurfaceFormat::setDefaultFormat(format);
}
QApplication a(argc, argv);
QLoggingCategory::setFilterRules(QStringLiteral("qt.scenegraph.general=true"));
QOpenGLContext *globalSharedContext = QOpenGLContext::globalShareContext();
qInfo() << "Global OpenGL context format: " << globalSharedContext->format() << "\n";
MainWindow w;
// Move middle-ish.
const QRect desktopRect = QApplication::desktop()->screenGeometry();
const QSize pos = desktopRect.size() * qreal(0.1);
w.move(pos.width(), pos.height());
w.show();
return a.exec();
}
#include "main.moc"
|
