// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only

/*!
    \title QQuickWidget - QQuickView Comparison Example
    \example quickwidgets/qquickwidgetversuswindow_opengl
    \brief Demonstrates the benefits of QQuickWidget over a QQuickView embedded as a native window.
    \image qquickwidgetversuswindow-opengl-example.jpg

    The example allows showing the same Qt Quick scene within the same
    QWidget-based user interface using two different approaches: one is using a
    QQuickView and using it as a child window and
    QWidget::createWindowContainer(). The other is using QQuickWidget which
    acts as a true QWidget and supports, among others, better clipping and
    stacking, as is expected from a true QWidget.

    The Qt Quick scene also uses direct OpenGL rendering, proving that with
    QQuickWidget the rendering still happens using the accelerated 3D API. The
    implication of this is that the example is tied to OpenGL and will not work
    with other graphics APIs (Vulkan, Metal, Direct 3D).

    Clicking on the Show Overlay checkbox demonstrates a widget stacking case
    that is not rendering as expected when embedding a native window, while
    QQuickWidget makes it render as expected.

    Multisample antialiasing can also be exercised. When enabling it via the
    corresponding checkbox, QQuickWidget will internally render into a
    multisample renderbuffer, which is then resolved into a regular,
    non-multisample 2D texture after each render pass, thus enabling
    multisampling for the Qt Quick content without affecting the rest of the
    QWidget UI. With QQuickView the native window will request multisampling
    for its corresponding window surface, bringing similar results, if
    supported by the platform.

    The Qt Quick scene is interactive: typing into the text field is possible
    regardless of which embedding technology is used. QQuickWidget takes care
    of forwarding input events to the underlying Qt Quick scene automatically.
*/
