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diff --git a/src/gui/rhi/qshaderdescription_p_p.h b/src/gui/rhi/qshaderdescription_p_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Gui module
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QSHADERDESCRIPTION_P_H
+#define QSHADERDESCRIPTION_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of a number of Qt sources files.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qshaderdescription_p.h"
+#include <QtCore/QVector>
+#include <QtCore/QAtomicInt>
+#include <QtCore/QJsonDocument>
+
+QT_BEGIN_NAMESPACE
+
+struct Q_GUI_EXPORT QShaderDescriptionPrivate
+{
+    QShaderDescriptionPrivate()
+        : ref(1)
+    {
+        localSize[0] = localSize[1] = localSize[2] = 0;
+    }
+
+    QShaderDescriptionPrivate(const QShaderDescriptionPrivate *other)
+        : ref(1),
+          inVars(other->inVars),
+          outVars(other->outVars),
+          uniformBlocks(other->uniformBlocks),
+          pushConstantBlocks(other->pushConstantBlocks),
+          storageBlocks(other->storageBlocks),
+          combinedImageSamplers(other->combinedImageSamplers),
+          storageImages(other->storageImages),
+          localSize(other->localSize)
+    {
+    }
+
+    static QShaderDescriptionPrivate *get(QShaderDescription *desc) { return desc->d; }
+    static const QShaderDescriptionPrivate *get(const QShaderDescription *desc) { return desc->d; }
+
+    QJsonDocument makeDoc();
+    void loadDoc(const QJsonDocument &doc);
+
+    QAtomicInt ref;
+    QVector<QShaderDescription::InOutVariable> inVars;
+    QVector<QShaderDescription::InOutVariable> outVars;
+    QVector<QShaderDescription::UniformBlock> uniformBlocks;
+    QVector<QShaderDescription::PushConstantBlock> pushConstantBlocks;
+    QVector<QShaderDescription::StorageBlock> storageBlocks;
+    QVector<QShaderDescription::InOutVariable> combinedImageSamplers;
+    QVector<QShaderDescription::InOutVariable> storageImages;
+    std::array<uint, 3> localSize;
+};
+
+QT_END_NAMESPACE
+
+#endif