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diff --git a/src/ftgl/FTGlyph/FTTextureGlyphImpl.h b/src/ftgl/FTGlyph/FTTextureGlyphImpl.h
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+++ b/src/ftgl/FTGlyph/FTTextureGlyphImpl.h
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+/*
+ * FTGL - OpenGL font library
+ *
+ * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
+ * Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
+ *
+ * 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 __FTTextureGlyphImpl__
+#define __FTTextureGlyphImpl__
+
+#include "FTGlyphImpl.h"
+
+class FTTextureGlyphImpl : public FTGlyphImpl
+{
+    friend class FTTextureGlyph;
+    friend class FTTextureFontImpl;
+
+    protected:
+        FTTextureGlyphImpl(FT_GlyphSlot glyph, int id, int xOffset,
+                           int yOffset, int width, int height);
+
+        virtual ~FTTextureGlyphImpl();
+
+        virtual const FTPoint& RenderImpl(const FTPoint& pen, int renderMode);
+
+    private:
+        /**
+         * Reset the currently active texture to zero to get into a known
+         * state before drawing a string. This is to get round possible
+         * threading issues.
+         */
+        static void ResetActiveTexture() { activeTextureID = 0; }
+
+        /**
+         * The width of the glyph 'image'
+         */
+        int destWidth;
+
+        /**
+         * The height of the glyph 'image'
+         */
+        int destHeight;
+
+        /**
+         * Vector from the pen position to the topleft corner of the pixmap
+         */
+        FTPoint corner;
+
+        /**
+         * The texture co-ords of this glyph within the texture.
+         */
+        FTPoint uv[2];
+
+        /**
+         * The texture index that this glyph is contained in.
+         */
+        int glTextureID;
+
+        /**
+         * The texture index of the currently active texture
+         *
+         * We keep track of the currently active texture to try to reduce the
+         * number of texture bind operations.
+         */
+        static GLint activeTextureID;
+};
+
+#endif  //  __FTTextureGlyphImpl__
+