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  3. FMergeRenderContext

FMergeRenderContext

Utility class that contains everything necessary to perform the batched merge : scratch render targets, list of batches, etc.

API > API/Runtime > API/Runtime/Landscape

References

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

Syntax

class FMergeRenderContext

Remarks

Utility class that contains everything necessary to perform the batched merge : scratch render targets, list of batches, etc.

Constructors

  Type Name Description
Public function    
Public function    
Public function  

FMergeRenderContext ( ALandscape* InLandscape,
bool bInIsHeightmapMerge
)

  

Destructors

  Type Name Description
Public function Virtual    

Functions

  Type Name Description
Public function Const FTransform

ComputeVisualLogTransform ( const FTransform& InTransform
)

  
Public function Const TArray< ULandscapeLayerInfoObject * >

ConvertTargetLayerBitIndicesToLayerInfos ( const TBitArray<>& InTargetLayerBitIndices
)

  
Public function Const TArray< ULandscapeLayerInfoObject * >

ConvertTargetLayerBitIndicesToLayerInfosChecked ( const TBitArray<>& InTargetLayerBitIndices
)

  
Public function Const TArray< FName >

ConvertTargetLayerBitIndicesToNames ( const TBitArray<>& InTargetLayerBitIndices
)

  
Public function Const TArray< FName >

ConvertTargetLayerBitIndicesToNamesChecked ( const TBitArray<>& InTargetLayerBitIndices
)

  
Public function Const TBitArray

ConvertTargetLayerNamesToBitIndices ( TConstArrayView< FName > InTargetLayerNames
)

  
Public function Const TBitArray

ConvertTargetLayerNamesToBitIndicesChecked ( TConstArrayView< FName > InTargetLayerNames
)

  
Public function void

CycleBlendRenderTargets ( ERHIAccess InDesiredWriteAccess
)

 Cycle between the 3 render targets used for blending: Write becomes Read -> Read becomes ReadPrevious -> ReadPrevious becomes Write The new Write RT will be transitioned to state == InWriteAccess The new Read RT will be transitioned to state ERHIAccess::SRVMask The new ReadPrevious RT will stay in state ERHIAccess::SRVMask
Public function Const void

ForEachTargetLayer ( const TBitArray<>& InTargetLayerBitIndices,
TFunctionRef< bool(int32, FName)> Fn
)

 Runs the given function for each all valid target layer in the bit indices in parameters, with the possibility of early exit Most easily used with a lambda as follows: ForEachTargetLayer(int32 InTargetLayerIndex, FName InTargetLayerName -> bool { return continueLoop ? true : false; });
Public function Const void

ForEachTargetLayerChecked ( const TBitArray<>& InTargetLayerBitIndices,
TFunctionRef< bool(int32, FName)> Fn
)

  
Public function Const const TArray< FName > &  
Public function Const ULandscapeScratchRenderTarget *  
Public function Const ULandscapeScratchRenderTarget *  
Public function Const ULandscapeScratchRenderTarget *  
Public function Const const FMergeRenderBatch *  
Public function Const const TBitArray &  
Public function Const ALandscape *  
Public function Const FIntPoint  
Public function Const const TArray< FMergeRenderBatch > &  
Public function Const int32

GetTargetLayerIndexForName ( const FName& InName
)

  
Public function Const int32

GetTargetLayerIndexForNameChecked ( const FName& InName
)

  
Public function Const FName

GetTargetLayerNameForIndex ( int32 InIndex
)

  
Public function Const FName  
Public function Const ULandscapeScratchRenderTarget *

GetValidityRenderTarget ( const FName& InTargetLayerName
)

  
Public function Static int32  
Public function void  
Public function Const bool  
Public function Const bool

IsValid ()

  
Public function Const bool  
Public function void

Render ( TFunction< void(const FOnRenderBatchTargetGroupDoneParams&)> OnRenderBatchTargetGroupDone
)

  
Public function void Duplicates the vertex data from the (sub-)sections of the batch, assuming GetBlendRenderTargetRead() is the RT that is read from and GetBlendRenderTargetWrite() the one that is written to
Public function void Render the stencil render targets for each target layer in this merge for this batch
Public function void  

Operators

  Type Name Description
Public function FMergeRenderContext &

operator= ( const FMergeRenderContext& Other
)

  
Public function FMergeRenderContext &  

Classes

  Type Name Description
Public struct FOnRenderBatchTargetGroupDoneParams    

Constants

Name Description
NumBlendRenderTargets Blending is pretty much what we only do during the merge.

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