// Copyright Epic Games, Inc. All Rights Reserved.

#include "../Common.ush"

// Reroute SceneTexturesStruct uniform buffer references to the appropriate pass uniform buffer
#define SceneTexturesStruct LumenCardPass.SceneTextures

#include "/Engine/Generated/Material.ush"
#include "/Engine/Generated/VertexFactory.ush"

struct FLumenCardInterpolantsVSToPS
{

};

struct FLumenCardVSToPS
{
	FVertexFactoryInterpolantsVSToPS FactoryInterpolants;
	FLumenCardInterpolantsVSToPS PassInterpolants;
	float4 Position : SV_POSITION;
};

void Main(
	FVertexFactoryInput Input,
	out FLumenCardVSToPS Output
	)
{
	ResolvedView = ResolveView();

	FVertexFactoryIntermediates VFIntermediates = GetVertexFactoryIntermediates(Input);
	float4 WorldPositionExcludingWPO = VertexFactoryGetWorldPosition(Input, VFIntermediates);
	float4 WorldPosition = WorldPositionExcludingWPO;
	float4 ClipSpacePosition;

	float3x3 TangentToLocal = VertexFactoryGetTangentToLocal(Input, VFIntermediates);	
	FMaterialVertexParameters VertexParameters = GetMaterialVertexParameters(Input, VFIntermediates, WorldPosition.xyz, TangentToLocal);

	ISOLATE
	{
		// Don't use WPO as Lumen cards and mesh SDF are computed without them
		//WorldPosition.xyz += GetMaterialWorldPositionOffset(VertexParameters);
		float4 RasterizedWorldPosition = VertexFactoryGetRasterizedWorldPosition(Input, VFIntermediates, WorldPosition);
		ClipSpacePosition = mul(RasterizedWorldPosition, ResolvedView.TranslatedWorldToClip);
		Output.Position = ClipSpacePosition;
	}

	Output.FactoryInterpolants = VertexFactoryGetInterpolantsVSToPS(Input, VFIntermediates, VertexParameters);
}