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diff --git a/src/gui/vulkan/qvulkaninstance.h b/src/gui/vulkan/qvulkaninstance.h
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+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QVULKANINSTANCE_H
+#define QVULKANINSTANCE_H
+
+#include <QtGui/qtguiglobal.h>
+
+#if QT_CONFIG(vulkan) || defined(Q_CLANG_QDOC)
+
+#ifndef VK_NO_PROTOTYPES
+#define VK_NO_PROTOTYPES
+#endif
+#ifndef Q_CLANG_QDOC
+#include <vulkan/vulkan.h>
+#else
+typedef void* PFN_vkVoidFunction;
+typedef unsigned long VkSurfaceKHR;
+typedef unsigned long VkImage;
+typedef unsigned long VkImageView;
+#endif
+
+#include <QtCore/qhashfunctions.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qvector.h>
+#include <QtCore/qbytearraylist.h>
+#include <QtCore/qversionnumber.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+class QVulkanInstancePrivate;
+class QPlatformVulkanInstance;
+class QVulkanFunctions;
+class QVulkanDeviceFunctions;
+class QWindow;
+
+struct QVulkanLayer
+{
+    QByteArray name;
+    uint32_t version;
+    QVersionNumber specVersion;
+    QByteArray description;
+};
+Q_DECLARE_TYPEINFO(QVulkanLayer, Q_MOVABLE_TYPE);
+
+inline bool operator==(const QVulkanLayer &lhs, const QVulkanLayer &rhs) Q_DECL_NOTHROW
+{
+    return lhs.name == rhs.name && lhs.version == rhs.version && lhs.specVersion == rhs.specVersion;
+}
+inline bool operator!=(const QVulkanLayer &lhs, const QVulkanLayer &rhs) Q_DECL_NOTHROW
+{ return !(lhs == rhs); }
+
+inline uint qHash(const QVulkanLayer &key, uint seed = 0) Q_DECL_NOTHROW
+{
+    QtPrivate::QHashCombine hash;
+    seed = hash(seed, key.name);
+    seed = hash(seed, key.version);
+    seed = hash(seed, key.specVersion);
+    return seed;
+}
+
+struct QVulkanExtension
+{
+    QByteArray name;
+    uint32_t version;
+};
+Q_DECLARE_TYPEINFO(QVulkanExtension, Q_MOVABLE_TYPE);
+
+inline bool operator==(const QVulkanExtension &lhs, const QVulkanExtension &rhs) Q_DECL_NOTHROW
+{
+    return lhs.name == rhs.name && lhs.version == rhs.version;
+}
+inline bool operator!=(const QVulkanExtension &lhs, const QVulkanExtension &rhs) Q_DECL_NOTHROW
+{ return !(lhs == rhs); }
+
+inline uint qHash(const QVulkanExtension &key, uint seed = 0) Q_DECL_NOTHROW
+{
+    QtPrivate::QHashCombine hash;
+    seed = hash(seed, key.name);
+    seed = hash(seed, key.version);
+    return seed;
+}
+
+#ifndef QT_NO_DEBUG_STREAM
+Q_GUI_EXPORT QDebug operator<<(QDebug, const QVulkanLayer &);
+Q_GUI_EXPORT QDebug operator<<(QDebug, const QVulkanExtension &);
+#endif
+
+template<typename T>
+class QVulkanInfoVector : public QVector<T>
+{
+public:
+    bool contains(const QByteArray &name) const {
+        return std::any_of(this->cbegin(), this->cend(), [&](const T &entry) {
+            return entry.name == name; });
+    }
+    bool contains(const QByteArray &name, int minVersion) const {
+        return std::any_of(this->cbegin(), this->cend(), [&](const T &entry) {
+            return entry.name == name && entry.version >= minVersion; });
+    }
+};
+
+class Q_GUI_EXPORT QVulkanInstance
+{
+public:
+    QVulkanInstance();
+    ~QVulkanInstance();
+
+    enum Flag {
+        NoDebugOutputRedirect = 0x01
+    };
+    Q_DECLARE_FLAGS(Flags, Flag)
+
+    QVulkanInfoVector<QVulkanLayer> supportedLayers();
+    QVulkanInfoVector<QVulkanExtension> supportedExtensions();
+
+    void setVkInstance(VkInstance existingVkInstance);
+
+    void setFlags(Flags flags);
+    void setLayers(const QByteArrayList &layers);
+    void setExtensions(const QByteArrayList &extensions);
+    void setApiVersion(const QVersionNumber &vulkanVersion);
+
+    bool create();
+    void destroy();
+    bool isValid() const;
+    VkResult errorCode() const;
+
+    VkInstance vkInstance() const;
+
+    Flags flags() const;
+    QByteArrayList layers() const;
+    QByteArrayList extensions() const;
+    QVersionNumber apiVersion() const;
+
+    PFN_vkVoidFunction getInstanceProcAddr(const char *name);
+
+    QPlatformVulkanInstance *handle() const;
+
+    QVulkanFunctions *functions() const;
+    QVulkanDeviceFunctions *deviceFunctions(VkDevice device);
+    void resetDeviceFunctions(VkDevice device);
+
+    static VkSurfaceKHR surfaceForWindow(QWindow *window);
+
+    bool supportsPresent(VkPhysicalDevice physicalDevice, uint32_t queueFamilyIndex, QWindow *window);
+
+    void presentQueued(QWindow *window);
+
+private:
+    QScopedPointer<QVulkanInstancePrivate> d_ptr;
+    Q_DISABLE_COPY(QVulkanInstance)
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QVulkanInstance::Flags)
+
+QT_END_NAMESPACE
+
+#endif // QT_CONFIG(vulkan)
+
+#endif // QVULKANINSTANCE_H