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diff --git a/public/tier2/beamsegdraw.h b/public/tier2/beamsegdraw.h
new file mode 100644
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+++ b/public/tier2/beamsegdraw.h
@@ -0,0 +1,119 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//===========================================================================//
+#if !defined( BEAMSEGDRAW_H )
+#define BEAMSEGDRAW_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#define NOISE_DIVISIONS		128
+
+
+#include "mathlib/vector.h"
+#include "materialsystem/imesh.h"
+
+//-----------------------------------------------------------------------------
+// Forward declarations
+//-----------------------------------------------------------------------------
+struct BeamTrail_t;
+class IMaterial;
+
+
+//-----------------------------------------------------------------------------
+// CBeamSegDraw is a simple interface to beam rendering.
+//-----------------------------------------------------------------------------
+struct BeamSeg_t
+{
+	Vector		m_vPos;
+	Vector		m_vColor;
+	float		m_flTexCoord;	// Y texture coordinate
+	float		m_flWidth;
+	float		m_flAlpha;
+};
+
+class CBeamSegDraw
+{
+public:
+	CBeamSegDraw() : m_pRenderContext( NULL ) {}
+	// Pass null for pMaterial if you have already set the material you want.
+	void			Start( IMatRenderContext *pRenderContext, int nSegs, IMaterial *pMaterial=0, CMeshBuilder *pMeshBuilder = NULL, int nMeshVertCount = 0 );
+	virtual void	NextSeg( BeamSeg_t *pSeg );
+	void			End();
+
+protected:
+	void			SpecifySeg( const Vector &vecCameraPos, const Vector &vNextPos );
+	void			ComputeNormal( const Vector &vecCameraPos, const Vector &vStartPos, const Vector &vNextPos, Vector *pNormal );
+
+	CMeshBuilder	*m_pMeshBuilder;
+	int				m_nMeshVertCount;
+
+	CMeshBuilder	m_Mesh;
+	BeamSeg_t		m_Seg;	
+
+	int				m_nTotalSegs;
+	int				m_nSegsDrawn;
+
+	Vector			m_vNormalLast;
+	IMatRenderContext *m_pRenderContext;
+};
+
+class CBeamSegDrawArbitrary : public CBeamSegDraw
+{
+public:
+	void			SetNormal( const Vector &normal );
+	void			NextSeg( BeamSeg_t *pSeg );
+
+protected:
+	void			SpecifySeg( const Vector &vNextPos );
+
+	BeamSeg_t		m_PrevSeg;
+};
+
+#if 0
+int ScreenTransform( const Vector& point, Vector& screen );
+
+void DrawSegs( int noise_divisions, float *prgNoise, const model_t* spritemodel,
+				float frame, int rendermode, const Vector& source, const Vector& delta, 
+				float startWidth, float endWidth, float scale, float freq, float speed, int segments,
+				int flags, float* color, float fadeLength, float flHDRColorScale = 1.0f );
+void DrawTeslaSegs( int noise_divisions, float *prgNoise, const model_t* spritemodel,
+				float frame, int rendermode, const Vector& source, const Vector& delta, 
+				float startWidth, float endWidth, float scale, float freq, float speed, int segments,
+				int flags, float* color, float fadeLength, float flHDRColorScale = 1.0f );
+void DrawSplineSegs( int noise_divisions, float *prgNoise, 
+				const model_t* beammodel, const model_t* halomodel, float flHaloScale,
+				float frame, int rendermode, int numAttachments, Vector* attachment, 
+				float startWidth, float endWidth, float scale, float freq, float speed, int segments,
+				int flags, float* color, float fadeLength, float flHDRColorScale = 1.0f );
+void DrawHalo(IMaterial* pMaterial, const Vector& source, float scale, float const* color, float flHDRColorScale = 1.0f );
+void BeamDrawHalo( const model_t* spritemodel, float frame, int rendermode, const Vector& source, 
+				  float scale, float* color, float flHDRColorScale = 1.0f );
+void DrawDisk( int noise_divisions, float *prgNoise, const model_t* spritemodel,
+			  float frame, int rendermode, const Vector& source, const Vector& delta, 
+			  float width, float scale, float freq, float speed, 
+			  int segments, float* color, float flHDRColorScale = 1.0f );
+void DrawCylinder( int noise_divisions, float *prgNoise, const model_t* spritemodel, 
+				  float frame, int rendermode, const Vector& source, 
+				  const Vector&  delta, float width, float scale, float freq, 
+				  float speed, int segments, float* color, float flHDRColorScale = 1.0f );
+void DrawRing( int noise_divisions, float *prgNoise, void (*pfnNoise)( float *noise, int divs, float scale ), 
+			  const model_t* spritemodel, float frame, int rendermode, 
+			  const Vector& source, const Vector& delta, float width, float amplitude, 
+			  float freq, float speed, int segments, float* color, float flHDRColorScale = 1.0f );
+void DrawBeamFollow( const model_t* spritemodel, BeamTrail_t* pHead, int frame, int rendermode, Vector& delta, 
+					Vector& screen, Vector& screenLast, float die, const Vector& source, 
+					int flags, float width, float amplitude, float freq, float* color, float flHDRColorScale = 1.0f );
+
+void DrawBeamQuadratic( const Vector &start, const Vector &control, const Vector &end, float width, const Vector &color, float scrollOffset, float flHDRColorScale = 1.0f );
+#endif
+
+//-----------------------------------------------------------------------------
+// Assumes the material has already been bound
+//-----------------------------------------------------------------------------
+void DrawSprite( const Vector &vecOrigin, float flWidth, float flHeight, color32 color );
+
+#endif // BEAMDRAW_H