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  3. FMeshElementCollector

FMeshElementCollector

Encapsulates the gathering of meshes from the various [FPrimitiveSceneProxy](API\Runtime\Engine\FPrimitiveSceneProxy) classes.

Unreal Engine C++ API Reference > Runtime > Engine

References

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

Syntax

class FMeshElementCollector

Remarks

Encapsulates the gathering of meshes from the various FPrimitiveSceneProxy classes.

Variables

  Type Name Description
Protected variable const bool bUseGPUScene  
Protected variable const ECommitFlags CommitFlags  
Protected variable TArray< FSimpleElementCollector *, TInlineAllocator< 2, SceneRenderingAllocator > > DebugSimpleElementCollectors  
Protected variable FGlobalDynamicIndexBuffer * DynamicIndexBuffer Dynamic buffer pools.
Protected variable TArray< FGPUScenePrimitiveCollector *, TInlineAllocator< 2, SceneRenderingAllocator > > DynamicPrimitiveCollectorPerView Tracks dynamic primitive data for upload to GPU Scene for every view, when enabled.
Protected variable FGlobalDynamicReadBuffer * DynamicReadBuffer  
Protected variable FGlobalDynamicVertexBuffer * DynamicVertexBuffer  
Protected variable const ERHIFeatureLevel::Type FeatureLevel  
Protected variable friend FSceneRenderingBulkObjectAllocator  
Protected variable TArray< FMaterialRenderProxy *, SceneRenderingAllocator > MaterialProxiesToDelete Material proxies that will be deleted at the end of the frame.
Protected variable TArray< TPair< FMaterialRenderProxy *, bool >, SceneRenderingAllocator > MaterialProxiesToInvalidate Material proxies to force uniform expression evaluation.
Protected variable TArray< const FMaterialRenderProxy *, SceneRenderingAllocator > MaterialProxiesToUpdate Material proxies to force uniform expression evaluation.
Protected variable TArray< TArray< FMeshBatchAndRelevance, SceneRenderingAllocator > *, TInlineAllocator< 2, SceneR... MeshBatches Meshes to render
Protected variable TArray< TPair< FGPUScenePrimitiveCollector *, FMeshBatch * >, SceneRenderingAllocator > MeshBatchesForGPUScene List of mesh batches that require GPU scene updates.
Protected variable TChunkedArray< FMeshBatch, 16384, FConcurrentLinearArrayAllocator > MeshBatchStorage Using TChunkedArray which will never realloc as new elements are added
Protected variable TArray< uint16, TInlineAllocator< 2, SceneRenderingAllocator > > MeshIdInPrimitivePerView Current Mesh Id In Primitive per view
Protected variable TArray< int32, TInlineAllocator< 2, SceneRenderingAllocator > > NumMeshBatchElementsPerView Number of elements in gathered meshes per view.
Protected variable FSceneRenderingBulkObjectAllocator & OneFrameResources Resources that will be deleted at the end of the frame.
Protected variable const FPrimitiveSceneProxy * PrimitiveSceneProxy Current primitive being gathered.
Protected variable FRHICommandList * RHICmdList  
Protected variable TArray< FSimpleElementCollector *, TInlineAllocator< 2, SceneRenderingAllocator > > SimpleElementCollectors PDIs
Protected variable TArray< const FSceneView *, TInlineAllocator< 2, SceneRenderingAllocator > > Views Views being collected for

Constructors

  Type Name Description
Protected function    

Destructors

  Type Name Description
Protected function    

Functions

  Type Name Description
Public function void

AddMesh ( int32 ViewIndex,
FMeshBatch& MeshBatch
)

 Adds a mesh batch to the collector for the specified view so that it can be rendered.
Public function void

AddTask ( TFunction< void()>&& Task
)

  
Public function void

AddTask ( const TFunction< void()>& Task
)

  
Protected function void

AddViewMeshArrays ( const FSceneView* InView,
TArray< FMeshBatchAndRelevance, SceneRenderingAllocator >* ViewMeshes,
FSimpleElementCollector* ViewSimpleElementCollector,
FGPUScenePrimitiveCollector* DynamicPrimitiveCollector,
FSimpleElementCollector* DebugSimpleElementCollector
)

  
Public function FMeshBatch & Allocates an FMeshBatch that can be safely referenced by the collector (lifetime will be long enough).
Public function T &

AllocateOneFrameResource ( ARGS&&... Args
)

 Allocates a temporary resource that is safe to be referenced by an FMeshBatch added to the collector.
Public function void

CacheUniformExpressions ( FMaterialRenderProxy* Proxy,
bool bRecreateUniformBuffer
)

 Adds a request to force caching of uniform expressions for a material render proxy.
Protected function void  
Protected function void

Commit ()

  
Protected function void

Finish ()

  
Protected function    
Public function FPrimitiveDrawInterface *

GetDebugPDI ( int32 ViewIndex
)

  
Public function FGlobalDynamicIndexBuffer & Return dynamic index buffer for this collector.
Public function FGlobalDynamicReadBuffer & Return dynamic read buffer for this collector.
Public function FGlobalDynamicVertexBuffer & Return dynamic vertex buffer for this collector.
Public function Const ERHIFeatureLevel::Type  
Public function Const uint32

GetMeshBatchCount ( uint32 ViewIndex
)

  
Public function Const uint32

GetMeshElementCount ( uint32 ViewIndex
)

  
Public function FPrimitiveDrawInterface *

GetPDI ( int32 ViewIndex
)

 Accesses the PDI for drawing lines, sprites, etc.
Public function FRHICommandList & Return the current RHI command list used to initialize resources.
Public function void  
Public function void Add a material render proxy that will be cleaned up automatically
Protected function void

SetPrimitive ( const FPrimitiveSceneProxy* InPrimitiveSceneProxy,
FHitProxyId DefaultHitProxyId
)

  
Public function Const bool  
Protected function void

Start ( FRHICommandList& RHICmdList,
FGlobalDynamicVertexBuffer& DynamicVertexBuffer,
FGlobalDynamicIndexBuffer& DynamicIndexBuffer,
FGlobalDynamicReadBuffer& DynamicReadBuffer
)

  

Enums

  Type Name Description
Protected enum ECommitFlags    

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