Engine/Shaders/ModShadowMeshAttenuationVS.usf

/*=============================================================================
	ModShadowMeshAttenuationVS.usf: Mesh attenutation VS for modulated shadows
	Copyright 1998-2008 Epic Games, Inc. All Rights Reserved.
=============================================================================*/

#include "Common.usf"
#include "Material.usf"
#include "VertexFactory.usf"

float4 LightPosition;

void Main(
	FVertexFactoryInput Input,
	out FVertexFactoryInterpolants OutFactoryInterpolants,
	out float3 OutTangentLightVector : TEXCOORD4,
	out float3 OutCameraVector : TEXCOORD5,
	out float4 OutPixelPosition : TEXCOORD6,
	out float4 OutPosition : POSITION
	)
{
	float4 WorldPosition = VertexFactoryGetWorldPosition(Input);
	OutPosition = MulMatrix(ViewProjectionMatrix,WorldPosition);
	OutFactoryInterpolants = VertexFactoryGetInterpolants(Input);
#if WORLD_POS
	OutPixelPosition = WorldPosition;
#else
	OutPixelPosition = OutPosition;
#endif
	float3x3 TangentBasis = VertexFactoryGetTangentBasis(Input);
	OutCameraVector = VertexFactoryWorldToTangentSpace(Input,TangentBasis,CameraPosition.xyz - WorldPosition.xyz * CameraPosition.w);
	OutTangentLightVector = VertexFactoryWorldToTangentSpace(Input,TangentBasis,LightPosition.xyz - WorldPosition.xyz);
}