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  3. FLandscapeRenderSystem

FLandscapeRenderSystem

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

API > API/Runtime > API/Runtime/Landscape

References

   
Module Landscape
Header /Engine/Source/Runtime/Landscape/Public/LandscapeRender.h
Include #include "LandscapeRender.h"

Syntax

struct FLandscapeRenderSystem

Remarks

FLandscapeRenderSystem

Variables

  Type Name Description
Public variable FVector ComponentOrigin  
Public variable int32 ComponentResolution Resolution, Origin and Size, for use in LOD Groups to verify that all landscapes are of matching resolutions, orientation and scale.
Public variable FVector ComponentXVector  
Public variable FVector ComponentYVector  
Public variable int8 ForcedLODOverride Forced LOD level which overrides the ForcedLOD level of all the sections under this LandscapeRenderSystem.
Public variable int32 LandscapeIndex  
Public variable uint32 LandscapeKey  
Public variable FIntPoint Min  
Public variable TMap< const FSceneView *, TResourceArray< float > > PerViewCachedSectionLODValues 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.
Public variable TMap< uint32, TResourceArray< float > > PerViewStateCachedSectionLODValues  
Public variable TMap< uint32, SectionKeyToLODValueMap > PerViewStateLastShadowInvalidationSectionLODValues  
Public variable int32 ReferenceCount Number of sections with resources created.
Public variable int32 RegisteredCount Number of sections registered.
Public variable FSceneInterface * Scene  
Public variable TArray< FLandscapeSectionInfo * > SectionInfos  
Public variable FBufferRHIRef SectionLODBiasBuffer  
Public variable TResourceArray< float > SectionLODBiases  
Public variable FShaderResourceViewRHIRef SectionLODBiasSRV  
Public variable FUniformBufferRHIRef SectionLODUniformBuffer  
Public variable int32 SectionsRemovedSinceLastCompact Counter used to reduce how often we call compact on the map when removing sections.
Public variable TMap< UE::Renderer::Private::IShadowInvalidatingInstances *, TArray< const FPrimitiveSceneInfo &... ShadowInvalidationRequests 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) :
Public variable FIntPoint Size  

Constructors

  Type Name Description
Public function  

FLandscapeRenderSystem ( uint32 InLandscapeKey,
FSceneInterface* InScene
)

  

Destructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function bool

AnySectionsInRangeInclusive ( FIntPoint RangeMin,
FIntPoint RangeMax
)

  
Public function void  
Public function Static float

ComputeLODFromScreenSize ( const LODSettingsComponent& InLODSettings,
float InScreenSizeSquared
)

  
Public function const TResourceArray< float > &

ComputeSectionsLODForView ( const FSceneView& InView,
UE::Renderer::Private::IShadowInvalidatingInstances* InShadowInvalidatingInstances
)

  
Public function Static void

CreateResources ( FRHICommandListBase& RHICmdList,
FLandscapeSectionInfo* SectionInfo
)

  
Public function Static void  
Public function void  
Public function Const const TResourceArray< float > &

GetCachedSectionLODValues ( const FSceneView& InView
)

  
Public function FLandscapeSectionInfo *

GetSectionInfo ( FIntPoint InRenderCoord
)

  
Public function Const int32

GetSectionLinearIndex ( FIntPoint InRenderCoord
)

  
Public function Const float

GetSectionLODBias ( FIntPoint InRenderCoord
)

  
Public function Const float

GetSectionLODValue ( const FSceneView& InView,
FIntPoint InRenderCoord
)

  
Public function Const bool

IsValidCoord ( FIntPoint InRenderCoord
)

  
Public function void

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

  
Public function Static void  
Public function void

ResizeAndMoveTo ( FIntPoint NewMin,
FIntPoint NewMax
)

  
Public function void

ResizeToInclude ( const FIntPoint& NewCoord
)

  
Public function void

SetSectionInfo ( FIntPoint InRenderCoord,
FLandscapeSectionInfo* InSectionInfo
)

  
Public function Static void  
Public function void

UpdateBuffers ( FRHICommandListBase& RHICmdList
)

  

Classes

  Type Name Description
Public struct LODSettingsComponent    

Typedefs

Name Description
FViewKey  
SectionKeyToLODValueMap 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

Constants

Name Description
LandscapeIndexAllocator  

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