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> Unreal Engine API Reference > Runtime > Engine > Rendering > FSkelMeshSection

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FSkelMeshSection

A set of skeletal mesh triangles which use the same material

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References

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

Syntax

struct FSkelMeshSection

Remarks

A set of skeletal mesh triangles which use the same material

Variables

	Name	Description
uint32	BaseIndex	The offset of this section's indices in the LOD's index buffer.
uint32	BaseVertexIndex	The offset into the LOD's vertex buffer of this section's vertices.
bool	bCastShadow	This section will cast shadow
bool	bDisabled	If disabled, we won't render this section
TArray< FBoneIn...	BoneMap	The bones which are used by the vertices of this section.
bool	bRecomputeTangent	This section will recompute tangent in runtime
uint8: 1	bSelected	Is this mesh selected?
bool	bUse16BitBoneIndex	Whether to store bone indices as 16 bit or 8 bit in vertex buffer for rendering.
int32	ChunkedParentSectionIndex	If this section was produce because of BONE chunking, the parent section index will be valid.
FClothingSectio...	ClothingData	Clothing data for this section, clothing is only present if ClothingData.IsValid() returns true
TArray< FMeshTo...	ClothMappingData	The extra vertex data for mapping to an APEX clothing simulation mesh.
int16	CorrespondClothAssetIndex	INDEX_NONE if not set.
int32	GenerateUpToLodIndex	The LOD index at which any generated lower quality LODs will include this section.
uint16	MaterialIndex	Material (texture) used for this section.
int32	MaxBoneInfluences	Max # of bones used to skin the vertices in this section
uint32	NumTriangles	The number of triangles in this section.
int32	NumVertices	Number of vertices in this section (size of SoftVertices array). Available in non-editor builds.
int32	OriginalDataSectionIndex	This represent the original section index in the imported data.
TMap< int32, TA...	OverlappingVertices	Map between a vertex index and all vertices that share the same position
ESkinVertexColo...	RecomputeTangentsVertexMaskChannel	Vertex color channel to mask recompute tangents. R=0,G=1 (default),B=2
TArray< FSoftSk...	SoftVertices	The soft vertices of this section.

Constructors

	Name	Description
	FSkelMeshSection()

Functions

	Name	Description
void	CalcMaxBoneInfluences()	Calculate max # of bone influences used by this skel mesh section
void	CalcUse16BitBoneIndex()	Calculate if this skel mesh section needs 16-bit bone indices
int32	GetMaxBoneInfluences()
int32	GetNumVertices()
int32	GetVertexBufferIndex()
bool	HasClothingData()
bool	Use16BitBoneIndex()

Deprecated Variables

		Name	Description
	bool	bLegacyClothingSection_DEPRECATED	This is set for old 'duplicate' sections that need to get removed on load
	int16	CorrespondClothSectionIndex_DEPRECATED	Corresponding Section Index will be enabled when this section is disabled because corresponding cloth section will be shown instead of this or disabled section index when this section is enabled for cloth simulation

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