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materialsystem/stdshaders/shadow_vs20.fxc

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+//	DYNAMIC: "DOWATERFOG"				"0..1"
+
+#include "common_vs_fxc.h"
+
+static const int g_FogType = DOWATERFOG;
+
+const float4 cBaseTexCoordTransform[2]			:  register( SHADER_SPECIFIC_CONST_0 );
+const float4 cTextureJitter[2]					: register( SHADER_SPECIFIC_CONST_2 );
+
+struct VS_INPUT
+{
+	// This is all of the stuff that we ever use.
+	float4 vPos				: POSITION;
+	float4 vColor			: COLOR0;
+	float4 vTexCoord0		: TEXCOORD0;
+};
+
+struct VS_OUTPUT
+{
+    float4 projPos					: POSITION;	
+#if !defined( _X360 )
+	float  fog						: FOG;
+#endif
+	float2 texCoord0				: TEXCOORD0;
+	float2 texCoord1				: TEXCOORD1;
+	float2 texCoord2				: TEXCOORD2;
+	float2 texCoord3				: TEXCOORD3;
+	float2 texCoord4				: TEXCOORD4;
+	HALF4 worldPos_projPosZ		    : TEXCOORD5;
+	float4 shadowColor				: COLOR0;
+	float4 fogFactorW				: COLOR1;
+};
+
+VS_OUTPUT main( const VS_INPUT v )
+{
+	VS_OUTPUT o = ( VS_OUTPUT )0;
+
+	float3 worldNormal, worldPos;
+	float2 texCoord;
+	worldPos = mul( v.vPos, cModel[0] );
+	float4 projPos = mul( float4( worldPos, 1 ), cViewProj );
+	o.projPos = projPos;
+	projPos.z = dot( float4( worldPos, 1 ), cViewProjZ );
+	
+	// NOTE: CalcFog returns 1 for non-water fog, so it's ok to use fog
+	// It returns the real fog for range fog, since we do vertex fog
+	o.fogFactorW = CalcFog( worldPos, projPos, g_FogType );
+#if !defined( _X360 )
+	o.fog = o.fogFactorW;	
+#endif
+	o.shadowColor = v.vColor;
+	o.worldPos_projPosZ = float4( worldPos, projPos.z );
+
+	texCoord.x = dot( v.vTexCoord0, cBaseTexCoordTransform[0] );
+	texCoord.y = dot( v.vTexCoord0, cBaseTexCoordTransform[1] );
+
+	o.texCoord0.xy = texCoord;
+	o.texCoord1.xy = texCoord + cTextureJitter[0];
+	o.texCoord2.xy = texCoord - cTextureJitter[0];
+	o.texCoord3.xy = texCoord + cTextureJitter[1];
+	o.texCoord4.xy = texCoord - cTextureJitter[1];
+
+	return o;
+}
+
+