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-/****************************************************************************
-**
-** Copyright (C) 2017 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:FDL$
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-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
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-** and conditions see https://www.qt.io/terms-conditions. For further
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-** GNU Free Documentation License Usage
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-** Documentation License version 1.3 as published by the Free Software
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-** this file. Please review the following information to ensure
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-****************************************************************************/
-
-/*!
-    \example hellovulkanwindow
-    \meta installpath vulkan
-    \title Hello Vulkan Window Example
-    \ingroup examples-vulkan
-    \brief Shows the basics of using QVulkanWindow.
-
-    The \e{Hello Vulkan Window Example} shows the basics of using QVulkanWindow
-    in order to display rendering with the Vulkan graphics API on systems that
-    support this.
-
-    \image hellovulkanwindow.png
-
-    In this example there will be no actual rendering: it simply begins and
-    ends a render pass, which results in clearing the buffers to a fixed value.
-    The color buffer clear value changes on every frame.
-
-    \section1 Startup
-
-    Each Qt application using Vulkan will have to have a \c{Vulkan instance}
-    which encapsulates application-level state and initializes a Vulkan library.
-
-    A QVulkanWindow must always be associated with a QVulkanInstance and hence
-    the example performs instance creation before the window. The
-    QVulkanInstance object must also outlive the window.
-
-    \snippet hellovulkanwindow/main.cpp 0
-
-    The example enables validation layers, when supported. When the requested
-    layers are not present, the request will be ignored. Additional layers and
-    extensions can be enabled in a similar manner.
-
-    \snippet hellovulkanwindow/main.cpp 1
-
-    Once the instance is ready, it is time to create a window. Note that \c w
-    lives on the stack and is declared after \c inst.
-
-    \section1 The QVulkanWindow Subclass
-
-    To add custom functionality to a QVulkanWindow, subclassing is used. This
-    follows the existing patterns from QOpenGLWindow and QOpenGLWidget.
-    However, QVulkanWindow utilizes a separate QVulkanWindowRenderer object.
-    This resembles QQuickFramebufferObject, and allows better separation of the
-    functions that are supposed to be reimplemented.
-
-    \snippet hellovulkanwindow/hellovulkanwindow.h 0
-
-    The QVulkanWindow subclass reimplements the factory function
-    QVulkanWindow::createRenderer(). This simply returns a new instance of the
-    QVulkanWindowRenderer subclass. In order to be able to access various
-    Vulkan resources via the window object, a pointer to the window is passed
-    and stored via the constructor.
-
-    \snippet hellovulkanwindow/hellovulkanwindow.cpp 0
-
-    Graphics resource creation and destruction is typically done in one of the
-    init - resource functions.
-
-    \snippet hellovulkanwindow/hellovulkanwindow.cpp 1
-
-    \section1 The Actual Rendering
-
-    QVulkanWindow subclasses queue their draw calls in their reimplementation
-    of QVulkanWindowRenderer::startNextFrame(). Once done, they are required to
-    call back QVulkanWindow::frameReady(). The example has no asynchronous
-    command generation, so the frameReady() call is made directly from
-    startNextFrame().
-
-    \snippet hellovulkanwindow/hellovulkanwindow.cpp 2
-
-    To get continuous updates, the example simply invokes
-    QWindow::requestUpdate() in order to schedule a repaint.
-
-    \include examples-run.qdocinc
-*/