Qt Quick 3D - Custom Geometry Example

 // Copyright (C) 2020 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

 #include <QGuiApplication>
 #include <QQmlApplicationEngine>
 #include <QtQuick3D/qquick3d.h>

 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);

     QSurfaceFormat::setDefaultFormat(QQuick3D::idealSurfaceFormat());

     QQmlApplicationEngine engine;
     QObject::connect(&engine, &QQmlApplicationEngine::objectCreationFailed,
             &app, []() { QCoreApplication::exit(-1); },
             Qt::QueuedConnection);
     engine.loadFromModule("CustomGeometryExample", "Main");

     return app.exec();
 }