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  3. FMergeRenderBatch

FMergeRenderBatch

Defines an individual render batch when merging the landscape.

API > API/Runtime > API/Runtime/Landscape

References

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

Syntax

struct FMergeRenderBatch

Remarks

Defines an individual render batch when merging the landscape. A batch corresponds to a render group on a world's region, i.e. a set of weightmaps (or the heightmap) to render on a portion of the world. Each batch is composed of a series of render steps.

Variables

  Type Name Description
Public variable TSet< ULandscapeComponent * > ComponentsToRender List of all components involved in this batch
Public variable TMap< ULandscapeComponent *, TBitArray<> > ComponentToTargetLayerBitIndices List of components involved in this batch and the target layers they're writing to (redundant with ComponentsToRender but we keep the latter for convenience) (each bit corresponds to a target layer name in FMergeRenderContext's AllTargetLayerNames)
Public variable ALandscape * Landscape  
Public variable FIntPoint MaxComponentKey  
Public variable FIntPoint MinComponentKey  
Public variable TArray< FMergeRenderStep > RenderSteps Sequential list of rendering operations that need to be performed to fully render this batch
Public variable FIntPoint Resolution TODO [jonathan.bard] : rename EffectiveResolution and make private maybe?
Public variable FIntRect SectionRect Section of the landscape being covered by this batch (in landscape vertex coordinates, inclusive bounds)
Public variable TBitArray TargetLayerNameBitIndices List of all target layers being rendered in this batch (i.e. bitwise OR of all of the render steps' RenderGroupBitIndices).
Public variable TArray< TSet< ULandscapeComponent * > > TargetLayersToComponents Reverse lookup of ComponentToTargetLayerBitIndices : one entry per element in ComponentToTargetLayerBitIndices, each entry containing all of the components involved in this merge for this target layer

Functions

  Type Name Description
Public function Const void

ComputeAllSubsectionRects ( TArray< FIntRect >& OutSubsectionRects,
TArray< FIntRect >& OutSubsectionRectsWithDuplicateBorders
)

 Compute the rects corresponding to the sub-sections that need to be read from and written to when expanding the render target (inclusive bounds)
Public function Const FIntRect

ComputeSectionRect ( ULandscapeComponent* InComponent,
bool bInWithDuplicateBorders
)

 Find the area in the render batch render target corresponding to this component
Public function Const int32

ComputeSubsectionRects ( ULandscapeComponent* InComponent,
TArray< FIntRect, TInlineAllocator< 4 > >& OutSubsectionRects,
TArray< FIntRect, TInlineAllocator< 4 > >& OutSubsectionRectsWithDuplicateBorders
)

 Find the area in the render batch render target corresponding to each of the subsections of this component
Public function Const FIntPoint

GetRenderTargetResolution ( bool bInWithDuplicateBorders
)

  

Operators

  Type Name Description
Public function Const bool

operator< ( const FMergeRenderBatch& InOther
)

  

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