UDocumentation UE5.7 10.02.2026 (Source)
API documentation for Unreal Engine 5.7
Namespaces | Enumerations | Functions
LumenReflections.h File Reference
#include "CoreTypes.h"
#include "BlueNoise.h"
#include "ShaderParameterMacros.h"

Go to the source code of this file.

Namespaces

namespace  LumenRadianceCache
 
namespace  LumenReflections
 

Enumerations

enum  LumenReflections::ETraceCompactionMode { LumenReflections::Default , LumenReflections::FarField , LumenReflections::HitLighting , LumenReflections::MAX }
 

Functions

void LumenReflections::SetupCompositeParameters (const FViewInfo &View, EReflectionsMethod ReflectionsMethod, LumenReflections::FCompositeParameters &OutParameters)
 
bool LumenReflections::UseAsyncCompute (const FViewFamilyInfo &ViewFamily, EDiffuseIndirectMethod DiffuseIndirectMethod, EReflectionsMethod ReflectionsMethod)
 
bool LumenReflections::UseFarField (const FSceneViewFamily &ViewFamily)
 
bool LumenReflections::UseHitLighting (const FViewInfo &View, EDiffuseIndirectMethod DiffuseIndirectMethod)
 
bool LumenReflections::UseTranslucentRayTracing (const FViewInfo &View)
 
bool LumenReflections::IsHitLightingForceEnabled (const FViewInfo &View, EDiffuseIndirectMethod DiffuseIndirectMethod)
 
bool LumenReflections::UseSurfaceCacheFeedback ()
 
bool LumenReflections::UseScreenTraces (const FViewInfo &View)
 
bool LumenReflections::UseDistantScreenTraces (const FViewInfo &View, bool bUseFarField, bool bUseRadianceCache)
 
float LumenReflections::GetDistantScreenTraceStepOffsetBias ()
 
bool LumenReflections::UseRadianceCache ()
 
bool LumenReflections::UseRadianceCacheSkyVisibility ()
 
bool LumenReflections::UseRadianceCacheStochasticInterpolation ()
 
float LumenReflections::GetSampleSceneColorDepthTreshold ()
 
float LumenReflections::GetSampleSceneColorNormalTreshold ()
 
float LumenReflections::GetFarFieldSampleSceneColorDepthTreshold ()
 
float LumenReflections::GetFarFieldSampleSceneColorNormalTreshold ()
 
uint32 LumenReflections::GetMaxReflectionBounces (const FViewInfo &View)
 
uint32 LumenReflections::GetMaxRefractionBounces (const FViewInfo &View)
 
FCompactedReflectionTraceParameters LumenReflections::CompactTraces (FRDGBuilder &GraphBuilder, const FViewInfo &View, const FLumenCardTracingParameters &TracingParameters, const FLumenReflectionTracingParameters &ReflectionTracingParameters, const FLumenReflectionTileParameters &ReflectionTileParameters, bool bCullByDistanceFromCamera, float CompactionTracingEndDistanceFromCamera, float CompactionMaxTraceDistance, ERDGPassFlags ComputePassFlags, ETraceCompactionMode TraceCompactionMode=ETraceCompactionMode::Default, bool bSortByMaterial=false)
 
void TraceReflections (FRDGBuilder &GraphBuilder, const FScene *Scene, const FViewInfo &View, const FLumenSceneFrameTemporaries &FrameTemporaries, bool bTraceMeshObjects, const FSceneTextures &SceneTextures, const FLumenReflectionTracingParameters &ReflectionTracingParameters, const FLumenReflectionTileParameters &ReflectionTileParameters, const FLumenMeshSDFGridParameters &InMeshSDFGridParameters, bool bUseRadianceCache, EDiffuseIndirectMethod DiffuseIndirectMethod, const LumenRadianceCache::FRadianceCacheInterpolationParameters &RadianceCacheParameters, const FBoxSphereBounds &FirstPersonWorldSpaceRepresentationViewBounds, ERDGPassFlags ComputePassFlags)
 
void RenderLumenHardwareRayTracingReflections (FRDGBuilder &GraphBuilder, const FSceneTextures &SceneTextures, const FSceneTextureParameters &SceneTextureParameters, const FScene *Scene, const FViewInfo &View, const FLumenCardTracingParameters &TracingParameters, const FLumenReflectionTracingParameters &ReflectionTracingParameters, const FLumenReflectionTileParameters &ReflectionTileParameters, float MaxTraceDistance, bool bUseRadianceCache, const LumenRadianceCache::FRadianceCacheInterpolationParameters &RadianceCacheParameters, bool bSampleSceneColorAtHit, EDiffuseIndirectMethod DiffuseIndirectMethod, ERDGPassFlags ComputePassFlags)
 

Function Documentation

◆ RenderLumenHardwareRayTracingReflections()

void RenderLumenHardwareRayTracingReflections ( FRDGBuilder &  GraphBuilder,
const FSceneTextures &  SceneTextures,
const FSceneTextureParameters &  SceneTextureParameters,
const FScene *  Scene,
const FViewInfo &  View,
const FLumenCardTracingParameters &  TracingParameters,
const FLumenReflectionTracingParameters &  ReflectionTracingParameters,
const FLumenReflectionTileParameters &  ReflectionTileParameters,
float  MaxTraceDistance,
bool  bUseRadianceCache,
const LumenRadianceCache::FRadianceCacheInterpolationParameters &  RadianceCacheParameters,
bool  bSampleSceneColorAtHit,
EDiffuseIndirectMethod  DiffuseIndirectMethod,
ERDGPassFlags  ComputePassFlags 
)
extern

◆ TraceReflections()

void TraceReflections ( FRDGBuilder &  GraphBuilder,
const FScene *  Scene,
const FViewInfo &  View,
const FLumenSceneFrameTemporaries &  FrameTemporaries,
bool  bTraceMeshObjects,
const FSceneTextures &  SceneTextures,
const FLumenReflectionTracingParameters &  ReflectionTracingParameters,
const FLumenReflectionTileParameters &  ReflectionTileParameters,
const FLumenMeshSDFGridParameters &  InMeshSDFGridParameters,
bool  bUseRadianceCache,
EDiffuseIndirectMethod  DiffuseIndirectMethod,
const LumenRadianceCache::FRadianceCacheInterpolationParameters &  RadianceCacheParameters,
const FBoxSphereBounds &  FirstPersonWorldSpaceRepresentationViewBounds,
ERDGPassFlags  ComputePassFlags 
)
extern