05fc3aef53
Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
// Copyright (C) 2022 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include <QApplication>
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#include <QMainWindow>
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#include <QScreen>
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#include <QShortcut>
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#include <QSurfaceFormat>
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#include <QOpenGLContext>
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#include <QOpenGLFunctions>
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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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#include <memory>
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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 = topLevelGlWidget.screen()->availableGeometry().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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auto *closeShortcut = new QShortcut(Qt::CTRL | Qt::Key_Q, &a, QApplication::closeAllWindows);
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closeShortcut->setContext(Qt::ApplicationShortcut);
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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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std::unique_ptr<MainWindow> mw1;
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std::unique_ptr<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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