UDocumentation UE5.7 10.02.2026 (Source)
API documentation for Unreal Engine 5.7
Classes | Namespaces | Functions | Variables
LumenSceneRendering.cpp File Reference
#include "RendererPrivate.h"
#include "ScenePrivate.h"
#include "SceneProxies/SkyLightSceneProxy.h"
#include "SceneUtils.h"
#include "PipelineStateCache.h"
#include "ShaderParameterStruct.h"
#include "LightSceneProxy.h"
#include "GPUScene.h"
#include "Rendering/NaniteResources.h"
#include "Nanite/Nanite.h"
#include "Nanite/NaniteShading.h"
#include "PixelShaderUtils.h"
#include "Lumen.h"
#include "LumenMeshCards.h"
#include "LumenSurfaceCacheFeedback.h"
#include "LumenSceneLighting.h"
#include "LumenSceneCardCapture.h"
#include "LumenTracingUtils.h"
#include "GlobalDistanceField.h"
#include "DistanceFieldAmbientOcclusion.h"
#include "HAL/LowLevelMemStats.h"
#include "PostProcess/SceneRenderTargets.h"
#include "ProfilingDebugging/CpuProfilerTrace.h"
#include "DataDrivenShaderPlatformInfo.h"
#include "StaticMeshBatch.h"
#include "LumenReflections.h"
#include "RayTracedTranslucency.h"
#include "LumenRadiosity.h"
#include "StereoRendering.h"
#include "SkyAtmosphereRendering.h"
#include "ComponentRecreateRenderStateContext.h"
#include "VT/VirtualTextureFeedbackResource.h"

Classes

struct  FMeshCardsAdd
 
struct  FMeshCardsRemove
 
struct  FInstanceRange
 
struct  FCardAllocationOutput
 
struct  FLumenSurfaceCacheCullPrimitivesTask
 
struct  FLumenSurfaceCacheCullInstancesTask
 
struct  FSurfaceCacheRemove
 
struct  FLumenSurfaceCacheUpdateMeshCardsTask
 
class  FResampleLightingHistoryToCardCaptureAtlasCS
 
class  FLumenCardResamplePS
 
class  FClearLumenCardCapturePS
 

Namespaces

namespace  LumenScene
 

Functions

FAutoConsoleVariableRef CVarLumenFastCameraMode (TEXT("r.LumenScene.FastCameraMode"), GLumenFastCameraMode, TEXT("Whether to update the Lumen Scene for fast camera movement - lower quality, faster updates so lighting can keep up with the camera."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneParallelUpdate (TEXT("r.LumenScene.ParallelUpdate"), GLumenSceneParallelUpdate, TEXT("Whether to run the Lumen Scene update in parallel."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenScenePrimitivePerTask (TEXT("r.LumenScene.PrimitivesPerTask"), GLumenScenePrimitivesPerTask, TEXT("How many primitives to process per single surface cache update task."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneMeshCardsPerTask (TEXT("r.LumenScene.MeshCardsPerTask"), GLumenSceneMeshCardsPerTask, TEXT("How many mesh cards to process per single surface cache update task."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheFreeze (TEXT("r.LumenScene.SurfaceCache.Freeze"), GLumenSurfaceCacheFreeze, TEXT("Freeze surface cache updates for debugging.\n"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheFreezeUpdateFrame (TEXT("r.LumenScene.SurfaceCache.FreezeUpdateFrame"), GLumenSurfaceCacheFreezeUpdateFrame, TEXT("Keep updating the same subset of surface cache for debugging and profiling.\n"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheReset (TEXT("r.LumenScene.SurfaceCache.Reset"), GLumenSceneSurfaceCacheReset, TEXT("Reset all atlases and captured cards.\n"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheResetEveryNthFrame (TEXT("r.LumenScene.SurfaceCache.ResetEveryNthFrame"), GLumenSceneSurfaceCacheResetEveryNthFrame, TEXT("Continuously reset all atlases and captured cards every N-th frame.\n"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneCardCapturesPerFrame (TEXT("r.LumenScene.SurfaceCache.CardCapturesPerFrame"), GLumenSceneCardCapturesPerFrame, TEXT(""), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneCardCaptureFactor (TEXT("r.LumenScene.SurfaceCache.CardCaptureFactor"), GLumenSceneCardCaptureFactor, TEXT("Controls how many texels can be captured per frame. Texels = SurfaceCacheTexels / Factor."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneCardFixedDebugResolution (TEXT("r.LumenScene.SurfaceCache.CardFixedDebugResolution"), GLumenSceneCardFixedDebugResolution, TEXT("Lumen card resolution"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneCardMaxTexelDensity (TEXT("r.LumenScene.SurfaceCache.CardMaxTexelDensity"), GLumenSceneCardMaxTexelDensity, TEXT("Lumen card texels per world space distance"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
FAutoConsoleVariableRef CVarLumenSceneCardMaxResolution (TEXT("r.LumenScene.SurfaceCache.CardMaxResolution"), GLumenSceneCardMaxResolution, TEXT("Maximum card resolution in Lumen Scene"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
int32 GetCardMaxResolution ()
 
int32 GetMaxLumenSceneCardCapturesPerFrame ()
 
bool LumenScene::AllowSurfaceCacheCardSharing ()
 
int32 LumenScene::GetMaxMeshCardsToAddPerFrame ()
 
int32 LumenScene::GetMaxMeshCardsRemovesPerFrame ()
 
int32 GetMaxTileCapturesPerFrame ()
 
void AddLumenStreamingViewOrigins (const FSceneViewFamily &ViewFamily, TArray< FVector, TInlineAllocator< LUMEN_MAX_VIEWS > > &OutOrigins)
 
 DECLARE_GPU_STAT (LumenSceneUpdate)
 
 DECLARE_GPU_STAT (UpdateLumenSceneBuffers)
 
 IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT (FLumenCardPassUniformParameters, "LumenCardPass", SceneTextures)
 
bool UpdateStaticMeshes (const FLumenPrimitiveGroup &PrimitiveGroup, FLumenCardRenderer &LumenCardRenderer)
 
void ProcessSceneRemoveOpsReadbackData (FLumenSceneData &LumenSceneData, const FLumenSceneReadback::FRemoveOp *RemoveOpsData)
 
void ProcessSceneAddOpsReadbackData (FLumenSceneData &LumenSceneData, const FLumenSceneReadback::FAddOp *AddOpsData)
 
void UpdateSurfaceCachePrimitives (FLumenSceneData &LumenSceneData, const TArray< FVector, TInlineAllocator< 2 > > &LumenSceneCameraOrigins, bool bOrthographicCamera, float LumenSceneDetail, float MaxCardUpdateDistanceFromCamera, FLumenCardRenderer &LumenCardRenderer, bool bAddTranslucentToCache)
 
void UpdateSurfaceCacheMeshCards (FLumenSceneData &LumenSceneData, FLumenSceneData::FFeedbackData LumenFeedbackData, const TArray< FVector, TInlineAllocator< 2 > > &LumenSceneCameraOrigins, bool bOrthographicCamera, float LumenSceneDetail, float MaxCardUpdateDistanceFromCamera, TArray< FSurfaceCacheRequest, SceneRenderingAllocator > &SurfaceCacheRequests, const FViewFamilyInfo &ViewFamily)
 
void UpdateLumenScenePrimitives (FRHIGPUMask GPUMask, FScene *Scene)
 
void AllocateResampledCardCaptureAtlas (FRDGBuilder &GraphBuilder, FIntPoint CardCaptureAtlasSize, FResampledCardCaptureAtlas &CardCaptureAtlas)
 
 IMPLEMENT_GLOBAL_SHADER (FResampleLightingHistoryToCardCaptureAtlasCS, "/Engine/Private/Lumen/LumenSceneLighting.usf", "ResampleLightingHistoryToCardCaptureAtlasCS", SF_Compute)
 
 IMPLEMENT_GLOBAL_SHADER (FLumenCardResamplePS, "/Engine/Private/Lumen/SurfaceCache/LumenSurfaceCache.usf", "LumenCardResamplePS", SF_Pixel)
 
void ResampleLumenCards (FRDGBuilder &GraphBuilder, const FViewInfo &View, const FScene *Scene, const FLumenSceneData &LumenSceneData, const FLumenSceneFrameTemporaries &FrameTemporaries, TConstArrayView< FCardPageRenderData > CardPagesToRender, bool bHasAnyCardCopy, FCardCaptureAtlas &OutCardCaptureAtlas, FResampledCardCaptureAtlas &OutCardCaptureLightingAtlas, FRDGBufferSRVRef &OutCardCaptureRectBufferSRV, int32 &OutNumPagesNeedDilation)
 
 IMPLEMENT_GLOBAL_SHADER_PARAMETER_STRUCT (FLumenCardScene, "LumenCardScene")
 
void UpdateLumenCardSceneUniformBuffer (FRDGBuilder &GraphBuilder, FScene *Scene, const FLumenSceneData &LumenSceneData, FLumenSceneFrameTemporaries &FrameTemporaries)
 
 DECLARE_GPU_STAT (UpdateCardSceneBuffer)
 
 IMPLEMENT_GLOBAL_SHADER (FClearLumenCardCapturePS, "/Engine/Private/Lumen/LumenSceneLighting.usf", "ClearLumenCardCapturePS", SF_Pixel)
 
void ClearLumenCardCapture (FRDGBuilder &GraphBuilder, const FGlobalShaderMap *GlobalShaderMap, const FCardCaptureAtlas &Atlas, FRDGBufferSRVRef RectCoordBufferSRV, uint32 NumRects)
 
bool UpdateGlobalLightingState (const FScene *Scene, const FViewInfo &View, FLumenSceneData &LumenSceneData)
 

Variables

int32 GLumenFastCameraMode = 0
 
int32 GLumenSceneParallelUpdate = 1
 
int32 GLumenScenePrimitivesPerTask = 128
 
int32 GLumenSceneMeshCardsPerTask = 128
 
int32 GLumenSurfaceCacheFreeze = 0
 
int32 GLumenSurfaceCacheFreezeUpdateFrame = 0
 
int32 GLumenSceneSurfaceCacheReset = 0
 
int32 GLumenSceneSurfaceCacheResetEveryNthFrame = 0
 
int32 GLumenSceneCardCapturesPerFrame = 300
 
int32 GLumenSceneCardCaptureFactor = 64
 
TAutoConsoleVariable< int32 > CVarLumenSceneSurfaceCacheRemovesPerFrame (TEXT("r.LumenScene.SurfaceCache.RemovesPerFrame"), 512, TEXT("How many mesh cards removes can be done per frame."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
TAutoConsoleVariable< float > CVarLumenSceneCardCaptureRefreshFraction (TEXT("r.LumenScene.SurfaceCache.CardCaptureRefreshFraction"), 0.125f, TEXT("0 disables card refresh."), ECVF_Scalability|ECVF_RenderThreadSafe)
 
TAutoConsoleVariable< int32 > CVarLumenSceneCardCaptureEnableInvalidation (TEXT("r.LumenScene.SurfaceCache.CardCaptureEnableInvalidation"), 1, TEXT("Whether to enable manual card recapture through InvalidateSurfaceCacheForPrimitive().\n"), ECVF_Scalability|ECVF_RenderThreadSafe)
 
float GLumenSceneCardFixedDebugResolution = -1
 
float GLumenSceneCardMaxTexelDensity = .2f
 
int32 GLumenSceneCardMaxResolution = 512
 
int32 GSurfaceCacheNumFramesToKeepUnusedPages = 256
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheNumFramesToKeepUnusedPages (TEXT("r.LumenScene.SurfaceCache.NumFramesToKeepUnusedPages"), GSurfaceCacheNumFramesToKeepUnusedPages, TEXT("Num frames to keep unused pages in surface cache."), ECVF_RenderThreadSafe)
 
int32 GLumenSceneForceEvictHiResPages = 0
 
FAutoConsoleVariableRef CVarLumenSceneForceEvictHiResPages (TEXT("r.LumenScene.SurfaceCache.ForceEvictHiResPages"), GLumenSceneForceEvictHiResPages, TEXT("Evict all optional hi-res surface cache pages."), ECVF_RenderThreadSafe)
 
int32 GLumenSceneRecaptureLumenSceneEveryFrame = 0
 
FAutoConsoleVariableRef CVarLumenGIRecaptureLumenSceneEveryFrame (TEXT("r.LumenScene.SurfaceCache.RecaptureEveryFrame"), GLumenSceneRecaptureLumenSceneEveryFrame, TEXT(""), ECVF_RenderThreadSafe)
 
int32 GLumenSceneSurfaceCacheLogUpdates = 0
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheLogUpdates (TEXT("r.LumenScene.SurfaceCache.LogUpdates"), GLumenSceneSurfaceCacheLogUpdates, TEXT("2 - will log mesh names."), ECVF_RenderThreadSafe)
 
int32 GLumenSceneSurfaceCacheResampleLighting = 1
 
FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheResampleLighting (TEXT("r.LumenScene.SurfaceCache.ResampleLighting"), GLumenSceneSurfaceCacheResampleLighting, TEXT("Whether to resample card lighting when cards are reallocated. This is needed for Radiosity temporal accumulation but can be disabled for debugging."), ECVF_RenderThreadSafe)
 
int32 GAllowLumenDiffuseIndirect
 
int32 GAllowLumenReflections
 

Function Documentation

◆ AddLumenStreamingViewOrigins()

void AddLumenStreamingViewOrigins ( const FSceneViewFamily &  ViewFamily,
TArray< FVector, TInlineAllocator< LUMEN_MAX_VIEWS > > &  OutOrigins 
)

◆ AllocateResampledCardCaptureAtlas()

void AllocateResampledCardCaptureAtlas ( FRDGBuilder &  GraphBuilder,
FIntPoint  CardCaptureAtlasSize,
FResampledCardCaptureAtlas &  CardCaptureAtlas 
)

◆ ClearLumenCardCapture()

void ClearLumenCardCapture ( FRDGBuilder &  GraphBuilder,
const FGlobalShaderMap *  GlobalShaderMap,
const FCardCaptureAtlas &  Atlas,
FRDGBufferSRVRef  RectCoordBufferSRV,
uint32  NumRects 
)

◆ CVarLumenFastCameraMode()

FAutoConsoleVariableRef CVarLumenFastCameraMode ( TEXT("r.LumenScene.FastCameraMode")  ,
GLumenFastCameraMode  ,
TEXT("Whether to update the Lumen Scene for fast camera movement - lower quality, faster updates so lighting can keep up with the camera.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneCardCaptureFactor()

FAutoConsoleVariableRef CVarLumenSceneCardCaptureFactor ( TEXT("r.LumenScene.SurfaceCache.CardCaptureFactor")  ,
GLumenSceneCardCaptureFactor  ,
TEXT("Controls how many texels can be captured per frame. Texels = SurfaceCacheTexels / Factor.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneCardCapturesPerFrame()

FAutoConsoleVariableRef CVarLumenSceneCardCapturesPerFrame ( TEXT("r.LumenScene.SurfaceCache.CardCapturesPerFrame")  ,
GLumenSceneCardCapturesPerFrame  ,
TEXT("")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneCardFixedDebugResolution()

FAutoConsoleVariableRef CVarLumenSceneCardFixedDebugResolution ( TEXT("r.LumenScene.SurfaceCache.CardFixedDebugResolution")  ,
GLumenSceneCardFixedDebugResolution  ,
TEXT("Lumen card resolution")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneCardMaxResolution()

FAutoConsoleVariableRef CVarLumenSceneCardMaxResolution ( TEXT("r.LumenScene.SurfaceCache.CardMaxResolution")  ,
GLumenSceneCardMaxResolution  ,
TEXT("Maximum card resolution in Lumen Scene")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneCardMaxTexelDensity()

FAutoConsoleVariableRef CVarLumenSceneCardMaxTexelDensity ( TEXT("r.LumenScene.SurfaceCache.CardMaxTexelDensity")  ,
GLumenSceneCardMaxTexelDensity  ,
TEXT("Lumen card texels per world space distance")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneMeshCardsPerTask()

FAutoConsoleVariableRef CVarLumenSceneMeshCardsPerTask ( TEXT("r.LumenScene.MeshCardsPerTask")  ,
GLumenSceneMeshCardsPerTask  ,
TEXT("How many mesh cards to process per single surface cache update task.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneParallelUpdate()

FAutoConsoleVariableRef CVarLumenSceneParallelUpdate ( TEXT("r.LumenScene.ParallelUpdate")  ,
GLumenSceneParallelUpdate  ,
TEXT("Whether to run the Lumen Scene update in parallel.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenScenePrimitivePerTask()

FAutoConsoleVariableRef CVarLumenScenePrimitivePerTask ( TEXT("r.LumenScene.PrimitivesPerTask")  ,
GLumenScenePrimitivesPerTask  ,
TEXT("How many primitives to process per single surface cache update task.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneSurfaceCacheFreeze()

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheFreeze ( TEXT("r.LumenScene.SurfaceCache.Freeze")  ,
GLumenSurfaceCacheFreeze  ,
TEXT("Freeze surface cache updates for debugging.\n")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneSurfaceCacheFreezeUpdateFrame()

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheFreezeUpdateFrame ( TEXT("r.LumenScene.SurfaceCache.FreezeUpdateFrame")  ,
GLumenSurfaceCacheFreezeUpdateFrame  ,
TEXT("Keep updating the same subset of surface cache for debugging and profiling.\n")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneSurfaceCacheReset()

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheReset ( TEXT("r.LumenScene.SurfaceCache.Reset")  ,
GLumenSceneSurfaceCacheReset  ,
TEXT("Reset all atlases and captured cards.\n")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneSurfaceCacheResetEveryNthFrame()

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheResetEveryNthFrame ( TEXT("r.LumenScene.SurfaceCache.ResetEveryNthFrame")  ,
GLumenSceneSurfaceCacheResetEveryNthFrame  ,
TEXT("Continuously reset all atlases and captured cards every N-th frame.\n")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ DECLARE_GPU_STAT() [1/3]

DECLARE_GPU_STAT ( LumenSceneUpdate  )

◆ DECLARE_GPU_STAT() [2/3]

DECLARE_GPU_STAT ( UpdateCardSceneBuffer  )

◆ DECLARE_GPU_STAT() [3/3]

DECLARE_GPU_STAT ( UpdateLumenSceneBuffers  )

◆ GetCardMaxResolution()

int32 GetCardMaxResolution ( )

◆ GetMaxLumenSceneCardCapturesPerFrame()

int32 GetMaxLumenSceneCardCapturesPerFrame ( )

◆ GetMaxTileCapturesPerFrame()

int32 GetMaxTileCapturesPerFrame ( )

◆ IMPLEMENT_GLOBAL_SHADER() [1/3]

IMPLEMENT_GLOBAL_SHADER ( FClearLumenCardCapturePS  ,
"/Engine/Private/Lumen/LumenSceneLighting.usf"  ,
"ClearLumenCardCapturePS"  ,
SF_Pixel   
)

◆ IMPLEMENT_GLOBAL_SHADER() [2/3]

IMPLEMENT_GLOBAL_SHADER ( FLumenCardResamplePS  ,
"/Engine/Private/Lumen/SurfaceCache/LumenSurfaceCache.usf"  ,
"LumenCardResamplePS"  ,
SF_Pixel   
)

◆ IMPLEMENT_GLOBAL_SHADER() [3/3]

IMPLEMENT_GLOBAL_SHADER ( FResampleLightingHistoryToCardCaptureAtlasCS  ,
"/Engine/Private/Lumen/LumenSceneLighting.usf"  ,
"ResampleLightingHistoryToCardCaptureAtlasCS"  ,
SF_Compute   
)

◆ IMPLEMENT_GLOBAL_SHADER_PARAMETER_STRUCT()

IMPLEMENT_GLOBAL_SHADER_PARAMETER_STRUCT ( FLumenCardScene  ,
"LumenCardScene"   
)

◆ IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT()

IMPLEMENT_STATIC_UNIFORM_BUFFER_STRUCT ( FLumenCardPassUniformParameters  ,
"LumenCardPass"  ,
SceneTextures   
)

◆ ProcessSceneAddOpsReadbackData()

void ProcessSceneAddOpsReadbackData ( FLumenSceneData &  LumenSceneData,
const FLumenSceneReadback::FAddOp *  AddOpsData 
)

◆ ProcessSceneRemoveOpsReadbackData()

void ProcessSceneRemoveOpsReadbackData ( FLumenSceneData &  LumenSceneData,
const FLumenSceneReadback::FRemoveOp *  RemoveOpsData 
)

◆ ResampleLumenCards()

void ResampleLumenCards ( FRDGBuilder &  GraphBuilder,
const FViewInfo &  View,
const FScene *  Scene,
const FLumenSceneData &  LumenSceneData,
const FLumenSceneFrameTemporaries &  FrameTemporaries,
TConstArrayView< FCardPageRenderData >  CardPagesToRender,
bool  bHasAnyCardCopy,
FCardCaptureAtlas &  OutCardCaptureAtlas,
FResampledCardCaptureAtlas &  OutCardCaptureLightingAtlas,
FRDGBufferSRVRef &  OutCardCaptureRectBufferSRV,
int32 &  OutNumPagesNeedDilation 
)

◆ UpdateGlobalLightingState()

bool UpdateGlobalLightingState ( const FScene *  Scene,
const FViewInfo &  View,
FLumenSceneData &  LumenSceneData 
)

◆ UpdateLumenCardSceneUniformBuffer()

void UpdateLumenCardSceneUniformBuffer ( FRDGBuilder &  GraphBuilder,
FScene *  Scene,
const FLumenSceneData &  LumenSceneData,
FLumenSceneFrameTemporaries &  FrameTemporaries 
)

◆ UpdateLumenScenePrimitives()

void UpdateLumenScenePrimitives ( FRHIGPUMask  GPUMask,
FScene *  Scene 
)
extern

◆ UpdateStaticMeshes()

bool UpdateStaticMeshes ( const FLumenPrimitiveGroup &  PrimitiveGroup,
FLumenCardRenderer &  LumenCardRenderer 
)

Make sure that all mesh rendering data is prepared before we render this primitive group

Returns
Will return true it primitive group is ready to render or we need to wait until next frame

◆ UpdateSurfaceCacheMeshCards()

void UpdateSurfaceCacheMeshCards ( FLumenSceneData &  LumenSceneData,
FLumenSceneData::FFeedbackData  LumenFeedbackData,
const TArray< FVector, TInlineAllocator< 2 > > &  LumenSceneCameraOrigins,
bool  bOrthographicCamera,
float  LumenSceneDetail,
float  MaxCardUpdateDistanceFromCamera,
TArray< FSurfaceCacheRequest, SceneRenderingAllocator > &  SurfaceCacheRequests,
const FViewFamilyInfo &  ViewFamily 
)

◆ UpdateSurfaceCachePrimitives()

void UpdateSurfaceCachePrimitives ( FLumenSceneData &  LumenSceneData,
const TArray< FVector, TInlineAllocator< 2 > > &  LumenSceneCameraOrigins,
bool  bOrthographicCamera,
float  LumenSceneDetail,
float  MaxCardUpdateDistanceFromCamera,
FLumenCardRenderer &  LumenCardRenderer,
bool  bAddTranslucentToCache 
)

Variable Documentation

◆ CVarLumenGIRecaptureLumenSceneEveryFrame

FAutoConsoleVariableRef CVarLumenGIRecaptureLumenSceneEveryFrame(TEXT("r.LumenScene.SurfaceCache.RecaptureEveryFrame"), GLumenSceneRecaptureLumenSceneEveryFrame, TEXT(""), ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.RecaptureEveryFrame")  ,
GLumenSceneRecaptureLumenSceneEveryFrame  ,
TEXT("")  ,
ECVF_RenderThreadSafe   
)

◆ CVarLumenSceneCardCaptureEnableInvalidation

TAutoConsoleVariable< int32 > CVarLumenSceneCardCaptureEnableInvalidation(TEXT("r.LumenScene.SurfaceCache.CardCaptureEnableInvalidation"), 1, TEXT("Whether to enable manual card recapture through InvalidateSurfaceCacheForPrimitive().\n"), ECVF_Scalability|ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.CardCaptureEnableInvalidation")  ,
1  ,
TEXT("Whether to enable manual card recapture through InvalidateSurfaceCacheForPrimitive().\n")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneCardCaptureRefreshFraction

TAutoConsoleVariable< float > CVarLumenSceneCardCaptureRefreshFraction(TEXT("r.LumenScene.SurfaceCache.CardCaptureRefreshFraction"), 0.125f, TEXT("0 disables card refresh."), ECVF_Scalability|ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.CardCaptureRefreshFraction")  ,
0.  125f,
TEXT("0 disables card refresh.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneForceEvictHiResPages

FAutoConsoleVariableRef CVarLumenSceneForceEvictHiResPages(TEXT("r.LumenScene.SurfaceCache.ForceEvictHiResPages"), GLumenSceneForceEvictHiResPages, TEXT("Evict all optional hi-res surface cache pages."), ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.ForceEvictHiResPages")  ,
GLumenSceneForceEvictHiResPages  ,
TEXT("Evict all optional hi-res surface cache pages.")  ,
ECVF_RenderThreadSafe   
)

◆ CVarLumenSceneSurfaceCacheLogUpdates

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheLogUpdates(TEXT("r.LumenScene.SurfaceCache.LogUpdates"), GLumenSceneSurfaceCacheLogUpdates, TEXT("2 - will log mesh names."), ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.LogUpdates")  ,
GLumenSceneSurfaceCacheLogUpdates  ,
TEXT("2 - will log mesh names.")  ,
ECVF_RenderThreadSafe   
)

◆ CVarLumenSceneSurfaceCacheNumFramesToKeepUnusedPages

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheNumFramesToKeepUnusedPages(TEXT("r.LumenScene.SurfaceCache.NumFramesToKeepUnusedPages"), GSurfaceCacheNumFramesToKeepUnusedPages, TEXT("Num frames to keep unused pages in surface cache."), ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.NumFramesToKeepUnusedPages")  ,
GSurfaceCacheNumFramesToKeepUnusedPages  ,
TEXT("Num frames to keep unused pages in surface cache.")  ,
ECVF_RenderThreadSafe   
)

◆ CVarLumenSceneSurfaceCacheRemovesPerFrame

TAutoConsoleVariable< int32 > CVarLumenSceneSurfaceCacheRemovesPerFrame(TEXT("r.LumenScene.SurfaceCache.RemovesPerFrame"), 512, TEXT("How many mesh cards removes can be done per frame."), ECVF_Scalability|ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.RemovesPerFrame")  ,
512  ,
TEXT("How many mesh cards removes can be done per frame.")  ,
ECVF_Scalability|  ECVF_RenderThreadSafe 
)

◆ CVarLumenSceneSurfaceCacheResampleLighting

FAutoConsoleVariableRef CVarLumenSceneSurfaceCacheResampleLighting(TEXT("r.LumenScene.SurfaceCache.ResampleLighting"), GLumenSceneSurfaceCacheResampleLighting, TEXT("Whether to resample card lighting when cards are reallocated. This is needed for Radiosity temporal accumulation but can be disabled for debugging."), ECVF_RenderThreadSafe) ( TEXT("r.LumenScene.SurfaceCache.ResampleLighting")  ,
GLumenSceneSurfaceCacheResampleLighting  ,
TEXT("Whether to resample card lighting when cards are reallocated. This is needed for Radiosity temporal accumulation but can be disabled for debugging.")  ,
ECVF_RenderThreadSafe   
)

◆ GAllowLumenDiffuseIndirect

int32 GAllowLumenDiffuseIndirect
extern

◆ GAllowLumenReflections

int32 GAllowLumenReflections
extern

◆ GLumenFastCameraMode

int32 GLumenFastCameraMode = 0

◆ GLumenSceneCardCaptureFactor

int32 GLumenSceneCardCaptureFactor = 64

◆ GLumenSceneCardCapturesPerFrame

int32 GLumenSceneCardCapturesPerFrame = 300

◆ GLumenSceneCardFixedDebugResolution

float GLumenSceneCardFixedDebugResolution = -1

◆ GLumenSceneCardMaxResolution

int32 GLumenSceneCardMaxResolution = 512

◆ GLumenSceneCardMaxTexelDensity

float GLumenSceneCardMaxTexelDensity = .2f

◆ GLumenSceneForceEvictHiResPages

int32 GLumenSceneForceEvictHiResPages = 0

◆ GLumenSceneMeshCardsPerTask

int32 GLumenSceneMeshCardsPerTask = 128

◆ GLumenSceneParallelUpdate

int32 GLumenSceneParallelUpdate = 1

◆ GLumenScenePrimitivesPerTask

int32 GLumenScenePrimitivesPerTask = 128

◆ GLumenSceneRecaptureLumenSceneEveryFrame

int32 GLumenSceneRecaptureLumenSceneEveryFrame = 0

◆ GLumenSceneSurfaceCacheLogUpdates

int32 GLumenSceneSurfaceCacheLogUpdates = 0

◆ GLumenSceneSurfaceCacheResampleLighting

int32 GLumenSceneSurfaceCacheResampleLighting = 1

◆ GLumenSceneSurfaceCacheReset

int32 GLumenSceneSurfaceCacheReset = 0

◆ GLumenSceneSurfaceCacheResetEveryNthFrame

int32 GLumenSceneSurfaceCacheResetEveryNthFrame = 0

◆ GLumenSurfaceCacheFreeze

int32 GLumenSurfaceCacheFreeze = 0

◆ GLumenSurfaceCacheFreezeUpdateFrame

int32 GLumenSurfaceCacheFreezeUpdateFrame = 0

◆ GSurfaceCacheNumFramesToKeepUnusedPages

int32 GSurfaceCacheNumFramesToKeepUnusedPages = 256