LightFunctionRendering.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "Math/MathFwd.h"
 
class FViewInfo;
struct FViewMatrices;
class FLightSceneInfo;
 
// Computes a matrix to transform float4(SvPosition.xyz,1) directly to coordinate system of the given light
void LightFunctionSvPositionToLightTransform(FMatrix44f& OutMatrix, const FViewInfo& View, const FLightSceneInfo& LightSceneInfo);
 
FVector3f GetCamRelativeLightPosition(const FViewMatrices& ViewMatrices, const FLightSceneInfo& LightSceneInfo);
 
// Returns a fade fraction for a light function and a given view based on the appropriate fade settings.
float GetLightFunctionFadeFraction(const FViewInfo& View, FSphere LightBounds);