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diff --git a/drawinglayer/inc/processor3d/zbufferprocessor3d.hxx b/drawinglayer/inc/processor3d/zbufferprocessor3d.hxx
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+++ b/drawinglayer/inc/processor3d/zbufferprocessor3d.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <processor3d/defaultprocessor3d.hxx>
+#include <basegfx/matrix/b3dhommatrix.hxx>
+#include <memory>
+
+namespace basegfx {
+    class BZPixelRaster;
+}
+
+namespace drawinglayer::attribute {
+        class SdrSceneAttribute;
+        class SdrLightingAttribute;
+        class MaterialAttribute3D;
+}
+
+
+class ZBufferRasterConverter3D;
+class RasterPrimitive3D;
+
+namespace drawinglayer::processor3d
+    {
+        /**
+            This 3D renderer derived from DefaultProcessor3D renders all fed primitives to a 2D
+            raster bitmap using a Z-Buffer based approach. It is able to supersample and to handle
+            transparent content.
+         */
+        class ZBufferProcessor3D final : public DefaultProcessor3D
+        {
+        private:
+            /// inverse of EyeToView for rasterconversion with evtl. Phong shading
+            basegfx::B3DHomMatrix maInvEyeToView;
+
+            /// The raster converter for Z-Buffer
+            std::unique_ptr<ZBufferRasterConverter3D> mpZBufferRasterConverter3D;
+
+            /*  AA value. Defines how many oversamples will be used in X and Y. Values 0, 1
+                will switch it off while e.g. 2 will use 2x2 pixels for each pixel to create
+              */
+            sal_uInt16 mnAntiAlialize;
+
+            /*  remembered RasterPrimitive3D's which need to be painted back to front
+                for transparent 3D parts
+             */
+            mutable std::vector< RasterPrimitive3D > maRasterPrimitive3Ds;
+
+            sal_uInt32 mnStartLine;
+            sal_uInt32 mnStopLine;
+
+            // rasterconversions for filled and non-filled polygons
+
+            virtual void rasterconvertB3DPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolygon& rHairline) const override;
+            virtual void rasterconvertB3DPolyPolygon(const attribute::MaterialAttribute3D& rMaterial, const basegfx::B3DPolyPolygon& rFill) const override;
+
+        public:
+            ZBufferProcessor3D(
+                const geometry::ViewInformation3D& rViewInformation3D,
+                const attribute::SdrSceneAttribute& rSdrSceneAttribute,
+                const attribute::SdrLightingAttribute& rSdrLightingAttribute,
+                const basegfx::B2DRange& rVisiblePart,
+                sal_uInt16 nAntiAlialize,
+                double fFullViewSizeX,
+                double fFullViewSizeY,
+                basegfx::BZPixelRaster& rBZPixelRaster,
+                sal_uInt32 nStartLine,
+                sal_uInt32 nStopLine);
+            virtual ~ZBufferProcessor3D() override;
+
+            void finish();
+        };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */