/*=============================================================================
	FogVolumeApplyVertexShader.usf
	Copyright 1998-2007 Epic Games, Inc. All Rights Reserved.
=============================================================================*/

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

void Main(
	FVertexFactoryInput Input,
	out FVertexFactoryInterpolants FactoryInterpolants,
	out float4	ScreenPosition	: TEXCOORD5,
	out float3	CameraVector	: TEXCOORD6,
	out half4	HeightFog		: TEXCOORD7,
	out float4	Position		: POSITION
	)
{
	float4	WorldPosition = VertexFactoryGetWorldPosition(Input,FactoryInterpolants);
	HeightFog = CalculateVertexHeightFog(WorldPosition.xyz, CameraPosition);
	ScreenPosition = Position = MulMatrix(ViewProjectionMatrix,WorldPosition);
	float3x3 TangentBasis = VertexFactoryGetTangentBasis(Input);
	CameraVector = VertexFactoryWorldToTangentSpace(Input,TangentBasis,CameraPosition.xyz - WorldPosition.xyz * CameraPosition.w);
}