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  3. FStaticMeshLODResources

FStaticMeshLODResources

Rendering resources needed to render an individual static mesh LOD.

API > API/Runtime > API/Runtime/Engine

Rendering resources needed to render an individual static mesh LOD. This structure is ref counted to allow the LOD streamer to evaluate the number of readers to it (readers that could access the CPU data). Because the stream out clears the CPU readable data, CPU code that samples it must ensure to only reference LODs above CurrentFirstLODIdx.

   
Name FStaticMeshLODResources
Type struct
Header File /Engine/Source/Runtime/Engine/Public/StaticMeshResources.h
Include Path #include "StaticMeshResources.h"

Syntax

struct FStaticMeshLODResources : public FRefCountBase

Inheritance Hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

FStaticMeshLODResources ( bool bAddRef
)

 Default constructor. StaticMeshResources.h  

Destructors

Name Remarks Include Path Unreal Specifiers

~FStaticMeshLODResources()

   StaticMeshResources.h  

Structs

Name Remarks
FStaticMeshBuffersSize Due to discard on load, size of an static mesh LOD is not known at cook time and this struct is used to keep track of all the information needed to compute LOD size at load time

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
AdditionalIndexBuffers FAdditionalStaticMeshIndexBuffers *   StaticMeshResources.h  
AreaWeightedSampler FStaticMeshAreaWeightedSectionSampler Allows uniform random selection of mesh sections based on their area. StaticMeshResources.h  
AreaWeightedSectionSamplers FStaticMeshSectionAreaWeightedTriangleSamplerArray Allows uniform random selection of triangles on each mesh section based on triangle area. StaticMeshResources.h  
AreaWeightedSectionSamplersBuffer FStaticMeshSectionAreaWeightedTriangleSamplerBuffer Allows uniform random selection of triangles on GPU. StaticMeshResources.h  
bBuffersInlined uint32 True if vertex and index data are serialized inline StaticMeshResources.h  
bHasColorVertexData uint32   StaticMeshResources.h  
bHasDepthOnlyIndices uint32 True if the depth only index buffers contained data at init. StaticMeshResources.h  
bHasReversedDepthOnlyIndices uint32 True if the reversed index buffers contained data at init. StaticMeshResources.h  
bHasReversedIndices uint32 True if the reversed index buffers contained data at init. StaticMeshResources.h  
bHasWireframeIndices uint32   StaticMeshResources.h  
bIsOptionalLOD uint32 True if this LOD is optional. That is, vertex and index data may not be available StaticMeshResources.h  
BuffersSize uint32 Sum of all vertex and index buffer sizes. Calculated in SerializeBuffers StaticMeshResources.h  
BulkData FByteBulkData   StaticMeshResources.h  
CardRepresentationData FCardRepresentationData * Card Representation data associated with this mesh, null if not present. StaticMeshResources.h  
DepthOnlyIndexBuffer FRawStaticIndexBuffer Index buffer resource for rendering in depth only passes. StaticMeshResources.h  
DepthOnlyNumTriangles uint32   StaticMeshResources.h  
DerivedDataKey FString   StaticMeshResources.h  
DistanceFieldData FDistanceFieldVolumeData * Distance field data associated with this mesh, null if not present. StaticMeshResources.h  
IndexBuffer FRawStaticIndexBuffer Index buffer resource for rendering. StaticMeshResources.h  
MaxDeviation float The maximum distance by which this LOD deviates from the base from which it was generated. StaticMeshResources.h  
RayTracingGeometry FRayTracingGeometry * Geometry for ray tracing. StaticMeshResources.h  
Sections FStaticMeshSectionArray Sections for this LOD. StaticMeshResources.h  
SourceMeshBounds FBoxSphereBounds The bounds of the source mesh data for this LOD StaticMeshResources.h  
StreamingBulkData FByteBulkData   StaticMeshResources.h  
VertexBuffers FStaticMeshVertexBuffers   StaticMeshResources.h  
WedgeMap TArray< int32 > Map of wedge index to vertex index. Each LOD need one StaticMeshResources.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

SIZE_T GetCPUAccessMemoryOverhead()

 Get the estimated memory overhead of buffers marked as NeedsCPUAccess. StaticMeshResources.h  

int32 GetNumTexCoords()

   StaticMeshResources.h  

int32 GetNumTriangles()

 Return the triangle count of this LOD. StaticMeshResources.h  

int32 GetNumVertices()

 Return the number of vertices in this LOD. StaticMeshResources.h  

void GetResourceSizeEx ( FResourceSizeEx& CumulativeResourceSize
) const

   StaticMeshResources.h  

void InitResources ( UStaticMesh* Parent,
int32 LODIndex
)

 Initializes all rendering resources. StaticMeshResources.h  

void ReleaseResources()

 Releases all rendering resources. StaticMeshResources.h  

void ReleaseRHIForStreaming ( TBatcher& Batcher
)

   StaticMeshResources.h  

void Serialize ( FArchive& Ar,
UObject* Owner,
int32 Idx
)

 Serialize. StaticMeshResources.h  

Static

Name Remarks Include Path Unreal Specifiers

static void AccumIndexBufferSize ( const FRawStaticIndexBuffer& IndexBuffer,
uint32& OutSize
)

 Compute the size of IndexBuffer and add the result to OutSize StaticMeshResources.h  

static void AccumRayTracingGeometrySize ( const FRayTracingGeometry& RayTracingGeometry,
uint32& OutSize
)

 Compute the size of RayTracingGeometry and add the result to OutSize StaticMeshResources.h  

static void AccumVertexBuffersSize ( const FStaticMeshVertexBuffers& VertexBuffers,
uint32& OutSize
)

 Compute the size of VertexBuffers and add the result to OutSize StaticMeshResources.h  

static uint8 GenerateClassStripFlags ( FArchive& Ar,
UStaticMesh* OwnerStaticMesh,
int32 Index
)

   StaticMeshResources.h  

static int32 GetNumOptionalLODsAllowed ( const ITargetPlatform* TargetPlatform,
UStaticMesh* StaticMesh
)

   StaticMeshResources.h  

static int32 GetPlatformMinLODIdx ( const ITargetPlatform* TargetPlatform,
UStaticMesh* StaticMesh
)

   StaticMeshResources.h  

static bool IsLODCookedOut ( const ITargetPlatform* TargetPlatform,
UStaticMesh* StaticMesh,
bool bIsBelowMinLOD
)

   StaticMeshResources.h  

static bool IsLODInlined ( const ITargetPlatform* TargetPlatform,
UStaticMesh* StaticMesh,
int32 LODIdx,
bool bIsBelowMinLOD
)

   StaticMeshResources.h  

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