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diff --git a/linden/indra/llrender/llglimmediate.h b/linden/indra/llrender/llglimmediate.h
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+/** 
+ * @file llglimmediate.h
+ * @brief LLGLImmediate definition
+ *
+ *      This class acts as a wrapper for OpenGL immediate calls concerning glBegin and glEnd.
+ *      The goal of this class is to minimize the number of api calls due to legacy rendering
+ *      code, and to define an interface for a multiple rendering API abstraction of the UI
+ *      rendering.
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2008, 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_LLGLIMMEDIATE_H
+#define LL_LLGLIMMEDIATE_H
+
+#include "stdtypes.h"
+#include "llgltypes.h"
+#include "llglheaders.h"
+
+class LLGLImmediate
+{
+public:
+        LLGLImmediate();
+
+        void translatef(const GLfloat& x, const GLfloat& y, const GLfloat& z);
+        void pushMatrix();
+        void popMatrix();
+        void blendFunc(GLenum sfactor, GLenum dfactor);
+        void start();
+        void stop();
+        void flush();
+
+        void begin(const GLuint& mode);
+        void end();
+        void vertex2i(const GLint& x, const GLint& y);
+        void vertex2f(const GLfloat& x, const GLfloat& y);
+        void vertex3f(const GLfloat& x, const GLfloat& y, const GLfloat& z);
+        void vertex2fv(const GLfloat* v);
+        void vertex3fv(const GLfloat* v);
+        
+        void texCoord2i(const GLint& x, const GLint& y);
+        void texCoord2f(const GLfloat& x, const GLfloat& y);
+        void texCoord2fv(const GLfloat* tc);
+
+        void color4ub(const GLubyte& r, const GLubyte& g, const GLubyte& b, const GLubyte& a);
+        void color4f(const GLfloat& r, const GLfloat& g, const GLfloat& b, const GLfloat& a);
+        void color4fv(const GLfloat* c);
+        void color3f(const GLfloat& r, const GLfloat& g, const GLfloat& b);
+        void color3fv(const GLfloat* c);
+        void color4ubv(const GLubyte* c);
+
+        // switch clever mode GL immediate rendering on or off.  Setting to true builds
+        // client arrays manually, setting to false passes through the GL immediate mode
+        // commands to the GL implementation.  Controllable by the RenderUseCleverUI
+        // debug setting.
+        // *NOTE: I have measured that this has about a 9% performance cost (0.6ms) for the
+        // Render/UI fasttimer vs the old #if CLEVER compile time switch.  Dave Parks and I
+        // agreed that this was acceptable at the time due to it enabling better regression
+        // testing for QA.
+        // -Brad
+        void setClever(bool do_clever);
+
+        typedef struct Vertex
+        {
+                GLfloat v[3];
+                GLubyte c[4];
+                GLfloat uv[2];
+        };
+
+private:
+        static bool sClever;
+
+        U32 mCount;
+        U32 mMode;
+        Vertex mBuffer[4096];
+};
+
+extern LLGLImmediate gGL;
+
+#endif