b3717fc7f0
Task-number: QTBUG-60626 Change-Id: I6d102327c89206fcdce10f3ac04e112270b11ad2 Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
130 lines
5.3 KiB
C++
130 lines
5.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** BSD License Usage
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** Alternatively, you may use this file under the terms of the BSD license
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** as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of The Qt Company Ltd nor the names of its
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** contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QApplication>
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#include <QMainWindow>
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#include <QDesktopWidget>
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#include <QSurfaceFormat>
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#include <QOpenGLContext>
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#include <QCommandLineParser>
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#include <QCommandLineOption>
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#include "mainwindow.h"
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#include "glwidget.h"
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static QString getGlString(QOpenGLFunctions *functions, GLenum name)
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{
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if (const GLubyte *p = functions->glGetString(name))
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return QString::fromLatin1(reinterpret_cast<const char *>(p));
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return QString();
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}
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int main( int argc, char ** argv )
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{
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QApplication a( argc, argv );
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QCoreApplication::setApplicationName("Qt Threaded QOpenGLWidget Example");
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QCoreApplication::setOrganizationName("QtProject");
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QCoreApplication::setApplicationVersion(QT_VERSION_STR);
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QCommandLineParser parser;
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parser.setApplicationDescription(QCoreApplication::applicationName());
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parser.addHelpOption();
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parser.addVersionOption();
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QCommandLineOption singleOption("single", "Single thread");
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parser.addOption(singleOption);
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parser.process(a);
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QSurfaceFormat format;
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format.setDepthBufferSize(16);
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QSurfaceFormat::setDefaultFormat(format);
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// Two top-level windows with two QOpenGLWidget children in each.
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// The rendering for the four QOpenGLWidgets happens on four separate threads.
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GLWidget topLevelGlWidget;
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QPoint pos = QApplication::desktop()->availableGeometry(&topLevelGlWidget).topLeft() + QPoint(200, 200);
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topLevelGlWidget.setWindowTitle(QStringLiteral("Threaded QOpenGLWidget example top level"));
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topLevelGlWidget.resize(200, 200);
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topLevelGlWidget.move(pos);
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topLevelGlWidget.show();
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const QString glInfo = getGlString(topLevelGlWidget.context()->functions(), GL_VENDOR)
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+ QLatin1Char('/') + getGlString(topLevelGlWidget.context()->functions(), GL_RENDERER);
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const bool supportsThreading = !glInfo.contains(QLatin1String("nouveau"), Qt::CaseInsensitive)
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&& !glInfo.contains(QLatin1String("ANGLE"), Qt::CaseInsensitive)
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&& !glInfo.contains(QLatin1String("llvmpipe"), Qt::CaseInsensitive);
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const QString toolTip = supportsThreading ? glInfo : glInfo + QStringLiteral("\ndoes not support threaded OpenGL.");
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topLevelGlWidget.setToolTip(toolTip);
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QScopedPointer<MainWindow> mw1;
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QScopedPointer<MainWindow> mw2;
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if (!parser.isSet(singleOption)) {
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if (supportsThreading) {
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pos += QPoint(100, 100);
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mw1.reset(new MainWindow);
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mw1->setToolTip(toolTip);
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mw1->move(pos);
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mw1->setWindowTitle(QStringLiteral("Threaded QOpenGLWidget example #1"));
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mw1->show();
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pos += QPoint(100, 100);
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mw2.reset(new MainWindow);
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mw2->setToolTip(toolTip);
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mw2->move(pos);
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mw2->setWindowTitle(QStringLiteral("Threaded QOpenGLWidget example #2"));
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mw2->show();
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} else {
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qWarning() << toolTip;
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}
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}
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return a.exec();
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}
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