Update from SDK 2013

materialsystem/stdshaders/writez_dx6.cpp

@@ -0,0 +1,41 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "shaderlib/cshader.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+DEFINE_FALLBACK_SHADER( WriteZ, WriteZ_DX6 )
+
+BEGIN_SHADER_FLAGS( WriteZ_DX6, "Help for WriteZ_DX6", SHADER_NOT_EDITABLE )
+	BEGIN_SHADER_PARAMS
+	END_SHADER_PARAMS
+
+	SHADER_INIT_PARAMS()
+	{
+	}
+
+	SHADER_INIT
+	{
+	}
+
+	SHADER_DRAW
+	{
+		SHADOW_STATE
+		{
+			pShaderShadow->EnableColorWrites( false );
+			pShaderShadow->EnableAlphaWrites( false );
+			pShaderShadow->DrawFlags( SHADER_DRAW_POSITION );
+		}
+		DYNAMIC_STATE
+		{
+		}
+		Draw();
+	}
+END_SHADER
+