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diff --git a/util/fbcompose/OpenGLTexPartitioner.hh b/util/fbcompose/OpenGLTexPartitioner.hh
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+/** OpenGLTexPartitioner.hh file for the fluxbox compositor. */
+
+// Copyright (c) 2011 Gediminas Liktaras (gliktaras at gmail dot com)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+#ifndef FBCOMPOSITOR_OPENGLTEXPARTITIONER_HH
+#define FBCOMPOSITOR_OPENGLTEXPARTITIONER_HH
+
+
+#include "Exceptions.hh"
+#include "OpenGLResources.hh"
+
+#include "FbTk/RefCount.hh"
+
+#include <GL/glxew.h>
+#include <GL/glx.h>
+
+#include <X11/Xlib.h>
+
+#include <algorithm>
+#include <vector>
+
+
+namespace FbCompositor {
+
+    class OpenGLScreen;
+
+
+    //--- CONSTANTS ------------------------------------------------------------
+    
+    /** North border flag. */
+    const int BORDER_NORTH = 1 << 0;
+
+    /** East border flag. */
+    const int BORDER_EAST = 1 << 1;
+
+    /** South border flag. */
+    const int BORDER_SOUTH = 1 << 2;
+
+    /** West border flag. */
+    const int BORDER_WEST = 1 << 3;
+
+    /** A bitfield with all border flags set. */
+    const int BORDER_ALL = BORDER_NORTH | BORDER_EAST | BORDER_SOUTH | BORDER_WEST;
+
+
+    //--- SUPPORTING STRUCTURES ------------------------------------------------
+
+    /**
+     * A single 2D texture partition.
+     */
+    struct TexturePart {
+        OpenGL2DTexturePtr texture;     ///< Partition's contents.
+        unsigned int borders;           ///< A bitfield showing borders, adjacent to this partition.
+    };
+
+
+    //--- TEXTURE PARTITIONER --------------------------------------------------
+
+    /**
+     * A wrapper that automatically splits large textures into manageable (i.e.
+     * with supported size) parts.
+     */
+    class OpenGL2DTexturePartition {
+    public:
+        //--- CONSTRUCTORS AND DESTRUCTORS -------------------------------------
+
+        /** Constructor. */
+        OpenGL2DTexturePartition(const OpenGLScreen &screen, bool swizzle_alpha_to_one);
+
+        /** Destructor. */
+        ~OpenGL2DTexturePartition();
+
+
+        //--- ACCESSORS --------------------------------------------------------
+
+        /** \returns the partitions of the current texture. */
+        const std::vector<TexturePart> &partitions() const;
+
+
+        /** \returns the full height of the current texture. */
+        int fullHeight() const;
+
+        /** \returns the full width of the current texture. */
+        int fullWidth() const;
+
+
+        //--- MUTATORS ---------------------------------------------------------
+
+        /** Sets the texture's contents to the given pixmap. */
+        void setPixmap(Pixmap pixmap, bool manage_pixmap, int width, int height, int depth);
+
+
+    private:
+        //--- CONSTRUCTORS -----------------------------------------------------
+
+        /** Constructor. */
+        OpenGL2DTexturePartition(const OpenGL2DTexturePartition &other);
+
+        /** Assignment operator. */
+        OpenGL2DTexturePartition &operator=(const OpenGL2DTexturePartition &other);
+
+
+        //--- INTERNALS --------------------------------------------------------
+
+        /** Maximum supported texture size. */
+        int m_max_texture_size;
+
+        /** Whether alpha channel should be swizzled to one. */
+        bool m_swizzle_alpha_to_one;
+
+        
+        /** Partitions of the texture. */
+        std::vector<TexturePart> m_partitions;
+
+        /** Pixmap of the texture's contents. */
+        Pixmap m_pixmap;
+
+
+        /** Full texture height. */
+        int m_full_height;
+
+        /** Full texture width. */
+        int m_full_width;
+
+
+        /** Current connection to the X server. */
+        Display *m_display;
+
+        /** Screen that manages this texture. */
+        const OpenGLScreen &m_screen;
+    };
+
+    // Returns the full height of the current texture.
+    inline int OpenGL2DTexturePartition::fullHeight() const {
+        return m_full_height;
+    }
+
+    // Returns the full width of the current texture.
+    inline int OpenGL2DTexturePartition::fullWidth() const {
+        return m_full_width;
+    }
+
+    // Returns the partitions of the current texture.
+    inline const std::vector<TexturePart> &OpenGL2DTexturePartition::partitions() const {
+        return m_partitions;
+    }
+
+
+    //--- SUPPORTING FUNCTIONS -------------------------------------------------
+
+    /** Returns the border bitfield of the given partition. */
+    unsigned int getBorderBitfield(int unit_width, int unit_height, int x, int y);
+
+    /** Space partitioning function. */
+    std::vector<XRectangle> partitionSpace(int x, int y, int width, int height, int max_partition_size,
+                                           int *unit_width_return = 0, int *unit_height_return = 0);
+
+    /** Partitions space directly to buffers. */
+    std::vector<OpenGLBufferPtr> partitionSpaceToBuffers(const OpenGLScreen &screen, int x, int y,
+                                                         int width, int height);
+
+
+    //--- TYPEDEFS -------------------------------------------------------------
+
+    /** OpenGL texture partition smart pointer. */
+    typedef FbTk::RefCount<OpenGL2DTexturePartition> OpenGL2DTexturePartitionPtr;
+}
+
+#endif  // FBCOMPOSITOR_OPENGLTEXPARTITIONER_HH
+