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diff --git a/materialsystem/shaderapidx9/ShaderShadowDx10.h b/materialsystem/shaderapidx9/ShaderShadowDx10.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//===========================================================================//
+
+#ifndef SHADERSHADOWDX10_H
+#define SHADERSHADOWDX10_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "shaderapi/ishaderapi.h"
+#include "shaderapi/ishadershadow.h"
+
+
+//-----------------------------------------------------------------------------
+// The empty shader shadow
+//-----------------------------------------------------------------------------
+class CShaderShadowDx10 : public IShaderShadow
+{
+public:
+	CShaderShadowDx10();
+	virtual ~CShaderShadowDx10();
+
+	// Sets the default *shadow* state
+	void SetDefaultState();
+
+	// Methods related to depth buffering
+	void DepthFunc( ShaderDepthFunc_t depthFunc );
+	void EnableDepthWrites( bool bEnable );
+	void EnableDepthTest( bool bEnable );
+	void EnablePolyOffset( PolygonOffsetMode_t nOffsetMode );
+
+	// Suppresses/activates color writing 
+	void EnableColorWrites( bool bEnable );
+	void EnableAlphaWrites( bool bEnable );
+
+	// Methods related to alpha blending
+	void EnableBlending( bool bEnable );
+	void BlendFunc( ShaderBlendFactor_t srcFactor, ShaderBlendFactor_t dstFactor );
+
+	// Alpha testing
+	void EnableAlphaTest( bool bEnable );
+	void AlphaFunc( ShaderAlphaFunc_t alphaFunc, float alphaRef /* [0-1] */ );
+
+	// Wireframe/filled polygons
+	void PolyMode( ShaderPolyModeFace_t face, ShaderPolyMode_t polyMode );
+
+	// Back face culling
+	void EnableCulling( bool bEnable );
+
+	// constant color + transparency
+	void EnableConstantColor( bool bEnable );
+
+	// Indicates the vertex format for use with a vertex shader
+	// The flags to pass in here come from the VertexFormatFlags_t enum
+	// If pTexCoordDimensions is *not* specified, we assume all coordinates
+	// are 2-dimensional
+	void VertexShaderVertexFormat( unsigned int flags, 
+		int numTexCoords, int* pTexCoordDimensions,
+		int userDataSize );
+
+	// Indicates we're going to light the model
+	void EnableLighting( bool bEnable );
+	void EnableSpecular( bool bEnable );
+
+	// vertex blending
+	void EnableVertexBlend( bool bEnable );
+
+	// per texture unit stuff
+	void OverbrightValue( TextureStage_t stage, float value );
+	void EnableTexture( Sampler_t stage, bool bEnable );
+	void EnableTexGen( TextureStage_t stage, bool bEnable );
+	void TexGen( TextureStage_t stage, ShaderTexGenParam_t param );
+
+	// alternate method of specifying per-texture unit stuff, more flexible and more complicated
+	// Can be used to specify different operation per channel (alpha/color)...
+	void EnableCustomPixelPipe( bool bEnable );
+	void CustomTextureStages( int stageCount );
+	void CustomTextureOperation( TextureStage_t stage, ShaderTexChannel_t channel, 
+		ShaderTexOp_t op, ShaderTexArg_t arg1, ShaderTexArg_t arg2 );
+
+	// indicates what per-vertex data we're providing
+	void DrawFlags( unsigned int drawFlags );
+
+	// A simpler method of dealing with alpha modulation
+	void EnableAlphaPipe( bool bEnable );
+	void EnableConstantAlpha( bool bEnable );
+	void EnableVertexAlpha( bool bEnable );
+	void EnableTextureAlpha( TextureStage_t stage, bool bEnable );
+
+	// GR - Separate alpha blending
+	void EnableBlendingSeparateAlpha( bool bEnable );
+	void BlendFuncSeparateAlpha( ShaderBlendFactor_t srcFactor, ShaderBlendFactor_t dstFactor );
+
+	// Sets the vertex and pixel shaders
+	void SetVertexShader( const char *pFileName, int vshIndex );
+	void SetPixelShader( const char *pFileName, int pshIndex );
+
+	// Convert from linear to gamma color space on writes to frame buffer.
+	void EnableSRGBWrite( bool bEnable )
+	{
+	}
+
+	void EnableSRGBRead( Sampler_t stage, bool bEnable )
+	{
+	}
+
+	virtual void FogMode( ShaderFogMode_t fogMode )
+	{
+	}
+	virtual void SetDiffuseMaterialSource( ShaderMaterialSource_t materialSource )
+	{
+	}
+
+	virtual void SetMorphFormat( MorphFormat_t flags )
+	{
+	}
+
+	virtual void EnableStencil( bool bEnable )
+	{
+	}
+	virtual void StencilFunc( ShaderStencilFunc_t stencilFunc )
+	{
+	}
+	virtual void StencilPassOp( ShaderStencilOp_t stencilOp )
+	{
+	}
+	virtual void StencilFailOp( ShaderStencilOp_t stencilOp )
+	{
+	}
+	virtual void StencilDepthFailOp( ShaderStencilOp_t stencilOp )
+	{
+	}
+	virtual void StencilReference( int nReference )
+	{
+	}
+	virtual void StencilMask( int nMask )
+	{
+	}
+	virtual void StencilWriteMask( int nMask )
+	{
+	}
+
+	virtual void DisableFogGammaCorrection( bool bDisable )
+	{
+		//FIXME: empty for now.
+	}
+	virtual void FogMode( ShaderFogMode_t fogMode, bool bVertexFog ) 
+	{
+		//FIXME: empty for now.
+	}
+
+	// Alpha to coverage
+	void EnableAlphaToCoverage( bool bEnable );
+
+	void SetShadowDepthFiltering( Sampler_t stage );
+
+	// More alpha blending state
+	void BlendOp( ShaderBlendOp_t blendOp );
+	void BlendOpSeparateAlpha( ShaderBlendOp_t blendOp );
+
+	bool m_IsTranslucent;
+	bool m_IsAlphaTested;
+	bool m_bIsDepthWriteEnabled;
+	bool m_bUsesVertexAndPixelShaders;
+};
+
+
+extern CShaderShadowDx10* g_pShaderShadowDx10;
+
+#endif // SHADERSHADOWDX10_H
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