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  3. FLandscapeRenderSystem

FLandscapeRenderSystem

[FLandscapeRenderSystem](API\Runtime\Landscape\FLandscapeRenderSystem)

API > API/Runtime > API/Runtime/Landscape

FLandscapeRenderSystem

   
Name FLandscapeRenderSystem
Type struct
Header File /Engine/Source/Runtime/Landscape/Public/LandscapeRender.h
Include Path #include "LandscapeRender.h"

Syntax

struct FLandscapeRenderSystem

Constructors

Name Remarks Include Path Unreal Specifiers

FLandscapeRenderSystem ( uint32 InLandscapeKey,
FSceneInterface* InScene
)

   LandscapeRender.h  

Destructors

Name Remarks Include Path Unreal Specifiers

~FLandscapeRenderSystem()

   LandscapeRender.h  

Structs

Name Remarks
LODSettingsComponent  

Typedefs

Name Type Remarks Include Path
FViewKey uint32   LandscapeRender.h
SectionKeyToLODValueMap TMap< FIntPoint, float > This map allows to track, for each FLandscapeSectionInfo that triggered a shadow invalidation, the LOD value that was used when the invalidation occurred Key = SectionInfo's RenderCoord (we cannot use a linear index like the TMaps above because these might change as new sections get added/removed dynamically and this needs to be tracked across frames) Value = LOD value of the section when the last shadow invalidation occurred LandscapeRender.h

Constants

Name Type Remarks Include Path
LandscapeIndexAllocator TBitArray   LandscapeRender.h

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
ComponentOrigin FVector   LandscapeRender.h  
ComponentResolution int32 Resolution, Origin and Size, for use in LOD Groups to verify that all landscapes are of matching resolutions, orientation and scale. LandscapeRender.h  
ComponentXVector FVector   LandscapeRender.h  
ComponentYVector FVector   LandscapeRender.h  
ForcedLODOverride int8 Forced LOD level which overrides the ForcedLOD level of all the sections under this LandscapeRenderSystem. LandscapeRender.h  
LandscapeIndex int32   LandscapeRender.h  
LandscapeKey uint32   LandscapeRender.h  
Min FIntPoint   LandscapeRender.h  
PerViewCachedSectionLODValues TMap< const FSceneView *, TResourceArray< float > > For a given view, we use those 2 maps to store, for each FLandscapeSectionInfo in SectionInfos, the current LOD Values so that it can be passed down to the renderer These are only really valid for a given render since the list of sections can change in the next frame. LandscapeRender.h  
PerViewStateCachedSectionLODValues TMap< uint32, TResourceArray< float > >   LandscapeRender.h  
PerViewStateLastShadowInvalidationSectionLODValues TMap< uint32, SectionKeyToLODValueMap >   LandscapeRender.h  
ReferenceCount int32 Number of sections with resources created. LandscapeRender.h  
RegisteredCount int32 Number of sections registered. LandscapeRender.h  
Scene FSceneInterface *   LandscapeRender.h  
SectionInfos TArray< FLandscapeSectionInfo * >   LandscapeRender.h  
SectionLODBiasBuffer FBufferRHIRef   LandscapeRender.h  
SectionLODBiases TResourceArray< float >   LandscapeRender.h  
SectionLODBiasSRV FShaderResourceViewRHIRef   LandscapeRender.h  
SectionLODUniformBuffer FUniformBufferRHIRef   LandscapeRender.h  
SectionsRemovedSinceLastCompact int32 Counter used to reduce how often we call compact on the map when removing sections. LandscapeRender.h  
ShadowInvalidationRequests TMap< UE::Renderer::Private::IShadowInvalidatingInstances *, TArray< const FPrimitiveSceneInfo * > > List of shadow invalidations to perform this frame (because IShadowInvalidatingInstances is not parallel-render thread-safe, we have to store them temporarily and issue them on the render thread later on) : LandscapeRender.h  
Size FIntPoint   LandscapeRender.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

bool AnySectionsInRangeInclusive ( FIntPoint RangeMin,
FIntPoint RangeMax
)

   LandscapeRender.h  

void CompactMap()

   LandscapeRender.h  

const TResourceArray< float > & ComputeSectionsLODForView ( const FSceneView& InView,
UE::Renderer::Private::IShadowInvalidatingInstances* InShadowInvalidatingInstances
)

   LandscapeRender.h  

void FetchHeightmapLODBiases()

   LandscapeRender.h  

const TResourceArray< float > & GetCachedSectionLODValues ( const FSceneView& InView
) const

   LandscapeRender.h  

FLandscapeSectionInfo * GetSectionInfo ( FIntPoint InRenderCoord
)

   LandscapeRender.h  

int32 GetSectionLinearIndex ( FIntPoint InRenderCoord
) const

   LandscapeRender.h  

float GetSectionLODBias ( FIntPoint InRenderCoord
) const

   LandscapeRender.h  

float GetSectionLODValue ( const FSceneView& InView,
FIntPoint InRenderCoord
) const

   LandscapeRender.h  

bool IsValidCoord ( FIntPoint InRenderCoord
) const

   LandscapeRender.h  

void PerformShadowInvalidations ( UE::Renderer::Private::IShadowInvalidatingInstances& InShadowInvalidatingInstances
)

   LandscapeRender.h  

void ResizeAndMoveTo ( FIntPoint NewMin,
FIntPoint NewMax
)

   LandscapeRender.h  

void ResizeToInclude ( const FIntPoint& NewCoord
)

   LandscapeRender.h  

void SetSectionInfo ( FIntPoint InRenderCoord,
FLandscapeSectionInfo* InSectionInfo
)

   LandscapeRender.h  

void UpdateBuffers ( FRHICommandListBase& RHICmdList
)

   LandscapeRender.h  

Static

Name Remarks Include Path Unreal Specifiers

static float ComputeLODFromScreenSize ( const LODSettingsComponent& InLODSettings,
float InScreenSizeSquared
)

   LandscapeRender.h  

static void CreateResources ( FRHICommandListBase& RHICmdList,
FLandscapeSectionInfo* SectionInfo
)

   LandscapeRender.h  

static void DestroyResources ( FLandscapeSectionInfo* SectionInfo
)

   LandscapeRender.h  

static void RegisterSection ( FLandscapeSectionInfo* SectionInfo
)

   LandscapeRender.h  

static void UnregisterSection ( FLandscapeSectionInfo* SectionInfo
)

   LandscapeRender.h  

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