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diff --git a/src/plugins/renderers/rhi/managers/rhiresourcemanagers_p.h b/src/plugins/renderers/rhi/managers/rhiresourcemanagers_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2020 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D 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 QT3DRENDER_RENDER_RHI_RHIRESOURCEMANAGERS_P_H
+#define QT3DRENDER_RENDER_RHI_RHIRESOURCEMANAGERS_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <Qt3DRender/private/qt3drender_global_p.h>
+#include <Qt3DCore/private/qresourcemanager_p.h>
+#include <texture_p.h>
+#include <rhibuffer_p.h>
+#include <rhishader_p.h>
+#include <rhigraphicspipeline_p.h>
+#include <Qt3DRender/private/apishadermanager_p.h>
+#include <Qt3DRender/private/renderstateset_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DRender {
+
+namespace Render {
+
+namespace Rhi {
+
+class Q_AUTOTEST_EXPORT RHIBufferManager
+    : public Qt3DCore::QResourceManager<RHIBuffer, Qt3DCore::QNodeId, Qt3DCore::NonLockingPolicy>
+{
+};
+
+class Q_AUTOTEST_EXPORT RHITextureManager
+    : public Qt3DCore::QResourceManager<RHITexture, Qt3DCore::QNodeId, Qt3DCore::NonLockingPolicy>
+{
+public:
+    QHash<RHITexture *, Qt3DCore::QNodeId> texNodeIdForRHITexture;
+};
+
+class Q_AUTOTEST_EXPORT RHIShaderManager : public APIShaderManager<RHIShader>
+{
+public:
+    explicit RHIShaderManager() : APIShaderManager<RHIShader>() { }
+};
+
+// Geometry | Shader | RenderStateMask
+struct GraphicsPipelineIdentifier
+{
+    HGeometry geometry;
+    Qt3DCore::QNodeId shader;
+    int renderViewIndex;
+};
+
+class Q_AUTOTEST_EXPORT RHIGraphicsPipelineManager
+    : public Qt3DCore::QResourceManager<RHIGraphicsPipeline, GraphicsPipelineIdentifier,
+                                        Qt3DCore::NonLockingPolicy>
+{
+public:
+    RHIGraphicsPipelineManager() { }
+};
+
+class Q_AUTOTEST_EXPORT RHIResourceManagers
+{
+public:
+    RHIResourceManagers();
+    ~RHIResourceManagers();
+
+    inline RHIShaderManager *rhiShaderManager() const noexcept { return m_rhiShaderManager; }
+    inline RHITextureManager *rhiTextureManager() const noexcept { return m_rhiTextureManager; }
+    inline RHIBufferManager *rhiBufferManager() const noexcept { return m_rhiBufferManager; }
+    inline RHIGraphicsPipelineManager *rhiGraphicsPipelineManager() const noexcept
+    {
+        return m_rhiGraphicsPipelineManager;
+    }
+
+    void releaseAllResources();
+
+private:
+    RHIBufferManager *m_rhiBufferManager;
+    RHIShaderManager *m_rhiShaderManager;
+    RHITextureManager *m_rhiTextureManager;
+    RHIGraphicsPipelineManager *m_rhiGraphicsPipelineManager;
+};
+
+inline uint qHash(const GraphicsPipelineIdentifier &key, uint seed)
+{
+    const QPair<HGeometry, Qt3DCore::QNodeId> p = { key.geometry, key.shader };
+    using QT_PREPEND_NAMESPACE(qHash);
+    return qHash(p, seed) + qHash(key.renderViewIndex, seed);
+}
+
+inline bool operator==(const GraphicsPipelineIdentifier &a, const GraphicsPipelineIdentifier &b)
+{
+    return a.geometry == b.geometry && a.shader == b.shader
+            && a.renderViewIndex == b.renderViewIndex;
+}
+
+} // Rhi
+
+} // Render
+
+} // Qt3DRender
+
+Q_DECLARE_RESOURCE_INFO(Qt3DRender::Render::Rhi::RHIGraphicsPipeline, Q_REQUIRES_CLEANUP)
+Q_DECLARE_RESOURCE_INFO(Qt3DRender::Render::Rhi::RHITexture, Q_REQUIRES_CLEANUP)
+Q_DECLARE_RESOURCE_INFO(Qt3DRender::Render::Rhi::RHIBuffer, Q_REQUIRES_CLEANUP)
+Q_DECLARE_RESOURCE_INFO(Qt3DRender::Render::Rhi::RHIShader, Q_REQUIRES_CLEANUP)
+QT_END_NAMESPACE
+
+#endif // QT3DRENDER_RENDER_RHI_RHIRESOURCEMANAGERS_P_H