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  3. FSkelMeshSection

FSkelMeshSection

A set of skeletal mesh triangles which use the same material

Unreal Engine C++ API Reference > Runtime > Engine > Rendering

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

  Type Name Description
Public variable uint32 BaseIndex The offset of this section's indices in the LOD's index buffer.
Public variable uint32 BaseVertexIndex The offset into the LOD's vertex buffer of this section's vertices.
Public variable bool bCastShadow This section will cast shadow
Public variable bool bDisabled If disabled, we won't render this section
Public variable TArray< FBoneIndexType > BoneMap The bones which are used by the vertices of this section.
Public variable bool bRecomputeTangent This section will recompute tangent in runtime
Public variable uint8: 1 bSelected Is this mesh selected?
Public variable bool bUse16BitBoneIndex Whether to store bone indices as 16 bit or 8 bit in vertex buffer for rendering.
Public variable bool bVisibleInRayTracing If true, this section will be visible in ray tracing effects.
Public variable int32 ChunkedParentSectionIndex If this section was produce because of BONE chunking, the parent section index will be valid.
Public variable FClothingSectionData ClothingData Clothing data for this section, clothing is only present if ClothingData.IsValid() returns true
Public variable TArray< TArray< FMeshToMeshVertData > > ClothMappingDataLODs The cloth deformer mapping data to each required cloth LOD.
Public variable int16 CorrespondClothAssetIndex INDEX_NONE if not set.
Public variable int32 GenerateUpToLodIndex The LOD index at which any generated lower quality LODs will include this section.
Public variable uint16 MaterialIndex Material (texture) used for this section.
Public variable int32 MaxBoneInfluences Max # of bones used to skin the vertices in this section
Public variable uint32 NumTriangles The number of triangles in this section.
Public variable int32 NumVertices Number of vertices in this section (size of SoftVertices array). Available in non-editor builds.
Public variable int32 OriginalDataSectionIndex This represent the original section index in the imported data.
Public variable TMap< int32, TArray< int32 > > OverlappingVertices Map between a vertex index and all vertices that share the same position
Public variable ESkinVertexColorChannel RecomputeTangentsVertexMaskChannel Vertex color channel to mask recompute tangents. R=0,G=1,B=2,A=None=3
Public variable TArray< FSoftSkinVertex > SoftVertices The soft vertices of this section.

Constructors

  Type Name Description
Public function    

Functions

  Type Name Description
Public function void Calculate max # of bone influences used by this skel mesh section
Public function void Calculate if this skel mesh section needs 16-bit bone indices
Public function Static void  
Public function Const int32  
Public function Const int32  
Public function Const int32  
Public function Const bool  
Public function Const bool  

Deprecated Variables

  Type Name Description
Public variable bool bLegacyClothingSection_DEPRECATED This is set for old 'duplicate' sections that need to get removed on load
Public variable 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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