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diff --git a/linden/indra/llrender/llfontbitmapcache.h b/linden/indra/llrender/llfontbitmapcache.h
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+/** 
+ * @file llfontbitmapcache.h
+ * @brief Storage for previously rendered glyphs.
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * Copyright (c) 2008-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLFONTBITMAPCACHE_H
+#define LL_LLFONTBITMAPCACHE_H
+
+#include <vector>
+
+// Maintain a collection of bitmaps containing rendered glyphs.
+// Generalizes the single-bitmap logic from LLFont and LLFontGL.
+class LLFontBitmapCache: public LLRefCount
+{
+public:
+        LLFontBitmapCache();
+        ~LLFontBitmapCache();
+
+        // Need to call this once, before caching any glyphs.
+        void init(S32 num_components,
+                          S32 max_char_width,
+                          S32 max_char_height);
+
+        void reset();
+
+        BOOL nextOpenPos(S32 width, S32 &posX, S32 &posY, S32 &bitmapNum);
+        
+        void destroyGL();
+        
+        LLImageRaw *getImageRaw(U32 bitmapNum = 0) const;
+        LLImageGL *getImageGL(U32 bitmapNum = 0) const;
+        
+        S32 getMaxCharWidth() const { return mMaxCharWidth; }
+        S32 getNumComponents() const { return mNumComponents; }
+        S32 getBitmapWidth() const { return mBitmapWidth; }
+        S32 getBitmapHeight() const { return mBitmapHeight; }
+
+private:
+        S32 mNumComponents;
+        S32 mBitmapWidth;
+        S32 mBitmapHeight;
+        S32 mBitmapNum;
+        S32 mMaxCharWidth;
+        S32 mMaxCharHeight;
+        S32 mCurrentOffsetX;
+        S32 mCurrentOffsetY;
+        S32 mCurrentBitmapNum;
+        std::vector<LLPointer<LLImageRaw> >     mImageRawVec;
+        std::vector<LLPointer<LLImageGL> > mImageGLVec;
+};
+
+#endif //LL_LLFONTBITMAPCACHE_H