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diff --git a/src/ftgl/FTFont/FTBufferFontImpl.h b/src/ftgl/FTFont/FTBufferFontImpl.h
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+++ b/src/ftgl/FTFont/FTBufferFontImpl.h
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+/*
+ * FTGL - OpenGL font library
+ *
+ * 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 __FTBufferFontImpl__
+#define __FTBufferFontImpl__
+
+#include "FTFontImpl.h"
+
+class FTGlyph;
+class FTBuffer;
+
+class FTBufferFontImpl : public FTFontImpl
+{
+    friend class FTBufferFont;
+
+    protected:
+        FTBufferFontImpl(FTFont *ftFont, const char* fontFilePath);
+
+        FTBufferFontImpl(FTFont *ftFont, const unsigned char *pBufferBytes,
+                         size_t bufferSizeInBytes);
+
+        virtual ~FTBufferFontImpl();
+
+        virtual FTPoint Render(const char *s, const int len,
+                               FTPoint position, FTPoint spacing,
+                               int renderMode);
+
+        virtual FTPoint Render(const wchar_t *s, const int len,
+                               FTPoint position, FTPoint spacing,
+                               int renderMode);
+
+        virtual bool FaceSize(const unsigned int size,
+                              const unsigned int res);
+
+    private:
+        /**
+         * Create an FTBufferGlyph object for the base class.
+         */
+        FTGlyph* MakeGlyphImpl(FT_GlyphSlot ftGlyph);
+
+        /* Internal generic Render() implementation */
+        template <typename T>
+        inline FTPoint RenderI(const T *s, const int len,
+                               FTPoint position, FTPoint spacing, int mode);
+
+        /* Pixel buffer */
+        FTBuffer *buffer;
+
+        static const int BUFFER_CACHE_SIZE = 16;
+        /* Texture IDs */
+        GLuint idCache[BUFFER_CACHE_SIZE];
+        void *stringCache[BUFFER_CACHE_SIZE];
+        FTBBox bboxCache[BUFFER_CACHE_SIZE];
+        FTPoint advanceCache[BUFFER_CACHE_SIZE];
+        int lastString;
+};
+
+#endif  //  __FTBufferFontImpl__
+