#include "EngineDefines.h"
#include "HAL/LowLevelMemTracker.h"
#include "Math/Vector.h"
#include "RHIShaderPlatform.h"

Namespaces
namespace	Lumen

Enumerations
enum class	Lumen::ETracingPermutation { Lumen::Cards , Lumen::VoxelsAfterCards , Lumen::Voxels , Lumen::MAX }

enum class	Lumen::ESurfaceCacheSampling { Lumen::AlwaysResidentPagesWithoutFeedback , Lumen::AlwaysResidentPages , Lumen::HighResPages }

Functions
bool	ShouldRenderLumenDiffuseGI (const FScene *Scene, const FSceneView &View, bool bSkipTracingDataCheck=false, bool bSkipProjectCheck=false)

bool	ShouldRenderLumenReflections (const FSceneView &View, bool bSkipTracingDataCheck=false, bool bSkipProjectCheck=false, bool bIncludeStandalone=true)

bool	ShouldRenderLumenReflectionsWater (const FViewInfo &View, bool bSkipTracingDataCheck=false, bool bSkipProjectCheck=false)

bool	ShouldRenderLumenDirectLighting (const FScene *Scene, const FSceneView &View)

bool	ShouldRenderAOWithLumenGI ()

bool	ShouldUseStereoLumenOptimizations ()

double	BoxSurfaceArea (FVector Extent)

void	Lumen::DebugResetSurfaceCache ()

float	Lumen::GetMaxTraceDistance (const FViewInfo &View)

bool	Lumen::IsLumenFeatureAllowedForView (const FScene *Scene, const FSceneView &View, bool bSkipTracingDataCheck=false, bool bSkipProjectCheck=false)

bool	Lumen::ShouldVisualizeScene (const FEngineShowFlags &ShowFlags)

bool	Lumen::ShouldVisualizeHardwareRayTracing (const FSceneViewFamily &ViewFamily)

bool	Lumen::ShouldHandleSkyLight (const FScene *Scene, const FSceneViewFamily &ViewFamily)

bool	Lumen::ShouldUpdateLumenSceneViewOrigin ()

FVector	Lumen::GetLumenSceneViewOrigin (const FViewInfo &View, int32 ClipmapIndex)

int32	Lumen::GetGlobalDFResolution ()

float	Lumen::GetGlobalDFClipmapExtent (int32 ClipmapIndex)

int32	Lumen::GetNumGlobalDFClipmaps (const FSceneView &View)

bool	Lumen::UseAsyncCompute (const FViewFamilyInfo &ViewFamily)

bool	Lumen::UseWaveOps (EShaderPlatform ShaderPlatform)

bool	Lumen::UseThreadGroupSize32 ()

EPixelFormat	Lumen::GetLightingDataFormat ()

FVector3f	Lumen::GetLightingQuantizationError ()

float	Lumen::GetCachedLightingPreExposure ()

bool	Lumen::IsSurfaceCacheFrozen ()

bool	Lumen::IsSurfaceCacheUpdateFrameFrozen ()

bool	Lumen::IsSoftwareRayTracingSupported ()

bool	Lumen::UseMeshSDFTracing (const FEngineShowFlags &EngineShowFlags)

bool	Lumen::UseGlobalSDFTracing (const FEngineShowFlags &EngineShowFlags)

bool	Lumen::UseGlobalSDFSimpleCoverageBasedExpand ()

bool	Lumen::UseGlobalSDFObjectGrid (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHeightfieldTracing (const FSceneViewFamily &ViewFamily, const FLumenSceneData &LumenSceneData)

bool	Lumen::UseHeightfieldTracingForVoxelLighting (const FLumenSceneData &LumenSceneData)

int32	Lumen::GetHeightfieldMaxTracingSteps ()

bool	Lumen::IsUsingGlobalSDF (const FSceneViewFamily &ViewFamily)

bool	Lumen::IsUsingDistanceFieldRepresentationBit (const FViewInfo &View)

bool	Lumen::AnyLumenHardwareRayTracingPassEnabled (const FScene *Scene, const FViewInfo &View)

bool	Lumen::AnyLumenHardwareInlineRayTracingPassEnabled (const FScene *Scene, const FViewInfo &View)

bool	Lumen::UseHardwareRayTracing (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedSceneLighting (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedDirectLighting (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedReflections (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseReSTIRGather (const FSceneViewFamily &ViewFamily, EShaderPlatform ShaderPlatform)

bool	Lumen::UseHardwareRayTracedScreenProbeGather (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedShortRangeAO (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedRadianceCache (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedRadiosity (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseHardwareRayTracedVisualize (const FSceneViewFamily &ViewFamily)

bool	Lumen::IsUsingRayTracingLightingGrid (const FSceneViewFamily &ViewFamily, const FViewInfo &View, EDiffuseIndirectMethod DiffuseIndirectMethod)

bool	Lumen::ShouldRenderRadiosityHardwareRayTracing (const FSceneViewFamily &ViewFamily)

bool	Lumen::ShouldPrecachePSOs (EShaderPlatform Platform)

bool	Lumen::UseHardwareInlineRayTracing (const FSceneViewFamily &ViewFamily)

float	Lumen::GetHardwareRayTracingPullbackBias ()

bool	Lumen::UseFarField (const FSceneViewFamily &ViewFamily)

bool	Lumen::UseFarFieldOcclusionOnly ()

float	Lumen::GetFarFieldMaxTraceDistance ()

float	Lumen::GetNearFieldMaxTraceDistanceDitherScale (bool bUseFarField)

float	Lumen::GetNearFieldSceneRadius (const FViewInfo &View, bool bUseFarField)

uint32	Lumen::GetMeshCardDistanceBin (float Distance)

float	Lumen::GetHeightfieldReceiverBias ()

void	Lumen::Shutdown ()

bool	Lumen::WriteWarnings (const FScene Scene, const FEngineShowFlags &ShowFlags, const TArray< FViewInfo > &Views, FScreenMessageWriter Writer)

bool	Lumen::SupportsMultipleClosureEvaluation (EShaderPlatform ShaderPlatform)

bool	Lumen::SupportsMultipleClosureEvaluation (const FViewInfo &View)

	LLM_DECLARE_TAG (Lumen)

Function Documentation

◆ BoxSurfaceArea()

double BoxSurfaceArea ( FVector Extent )

inline

◆ LLM_DECLARE_TAG()

LLM_DECLARE_TAG ( Lumen )

◆ ShouldRenderAOWithLumenGI()

bool ShouldRenderAOWithLumenGI ( )

extern

◆ ShouldRenderLumenDiffuseGI()

bool ShouldRenderLumenDiffuseGI	(	const FScene *	Scene,
		const FSceneView &	View,
		bool	bSkipTracingDataCheck = `false`,
		bool	bSkipProjectCheck = `false`
	)

extern

◆ ShouldRenderLumenDirectLighting()

bool ShouldRenderLumenDirectLighting	(	const FScene *	Scene,
		const FSceneView &	View
	)

extern

◆ ShouldRenderLumenReflections()

bool ShouldRenderLumenReflections	(	const FSceneView &	View,
		bool	bSkipTracingDataCheck = `false`,
		bool	bSkipProjectCheck = `false`,
		bool	bIncludeStandalone = `true`
	)

extern

◆ ShouldRenderLumenReflectionsWater()

bool ShouldRenderLumenReflectionsWater	(	const FViewInfo &	View,
		bool	bSkipTracingDataCheck = `false`,
		bool	bSkipProjectCheck = `false`
	)

extern

◆ ShouldUseStereoLumenOptimizations()

bool ShouldUseStereoLumenOptimizations ( )

extern

Variable Documentation

◆ GLumenFastCameraMode

int32 GLumenFastCameraMode

extern

Variables
constexpr uint32	Lumen::PhysicalPageSize = 128

constexpr uint32	Lumen::VirtualPageSize = PhysicalPageSize - 1

constexpr uint32	Lumen::MinCardResolution = 8

constexpr uint32	Lumen::MinResLevel = 3

constexpr uint32	Lumen::MaxResLevel = 11

constexpr uint32	Lumen::SubAllocationResLevel = 7

constexpr uint32	Lumen::NumResLevels = MaxResLevel - MinResLevel + 1

constexpr uint32	Lumen::CardTileSize = 8

constexpr uint32	Lumen::CardTileShadowDownsampleFactorDwords = 8

constexpr uint32	Lumen::NumDistanceBuckets = 16

constexpr float	Lumen::MaxTraceDistance = 0.5f * UE_OLD_WORLD_MAX

int32	GLumenFastCameraMode

Namespaces

Enumerations

Functions

Variables

Function Documentation

◆ BoxSurfaceArea()

◆ LLM_DECLARE_TAG()

◆ ShouldRenderAOWithLumenGI()

◆ ShouldRenderLumenDiffuseGI()

◆ ShouldRenderLumenDirectLighting()

◆ ShouldRenderLumenReflections()

◆ ShouldRenderLumenReflectionsWater()

◆ ShouldUseStereoLumenOptimizations()

Variable Documentation

◆ GLumenFastCameraMode