FSkeletalMeshLODInfo Struct Reference

Struct containing information for a particular LOD level, such as materials and info for when to use it. More...

Public Member Functions
Functions
void	SetbAllowCPUAccess (bool Value)
	Keeps this LODs data on the CPU so it can be used for things such as sampling in FX.
void	SetbBuildHalfEdgeBuffers (bool Value)
	If true, we will cache/cook half edge data that provides vertex connectivity information across material sections, which may be useful for other systems like Mesh Deformer.
void	SetbAllowMeshDeformer (bool Value)
	Whether a Mesh Deformer applied to the mesh asset or Skinned Mesh Component should be used on this LOD or not.
void	SetbSupportUniformlyDistributedSampling (bool Value)
	Mesh supports uniformly distributed sampling in constant time. Memory cost is 8 bytes per triangle. Example usage is uniform spawning of particles.
FSkeletalMeshLODInfo &	opAssign (FSkeletalMeshLODInfo Other)

Public Attributes
BuildSettings
FSkeletalMeshBuildSettings	BuildSettings
	build settings to apply when building render data.
ReductionSettings
TArray< FSectionReference >	SectionsToPrioritize
	Sections which should be prioritized for the quality, this will be weighted toward keeping source data. Use WeightOfPrioritization to control the value.
float32	WeightOfPrioritization
	How much to consideration to give BonesToPrioritize and SectionsToPrioritize. The weight is an additional vertex simplification penalty where 0 means nothing.
FSkeletalMeshOptimizationSettings	ReductionSettings
	Reduction settings to apply when building render data.
TArray< FBoneReference >	BonesToRemove
	Bones which should be removed from the skeleton for the LOD level.
TArray< FBoneReference >	BonesToPrioritize
	Bones which should be prioritized for the quality, this will be weighted toward keeping source data. Use WeightOfPrioritization to control the value.
UAnimSequence	BakePose
	Pose which should be used to reskin vertex influences for which the bones will be removed in this LOD level, uses ref-pose by default.
UAnimSequence	BakePoseOverride
	This is used when you are sharing the LOD settings, but you'd like to override the BasePose. This precedes prior to BakePose.
SkeletalMeshLODInfo
float32	LODHysteresis
	Used to avoid 'flickering' when on LOD boundary. Only taken into account when moving from complex->simple.
ESkinCacheUsage	SkinCacheUsage
	How this LOD uses the skin cache feature. Auto will defer to the default project global option. If Support Ray Tracing is enabled on the mesh, will imply Enabled.
float32	MorphTargetPositionErrorTolerance
	The Morph target position error tolerance in microns. Larger values result in better compression and lower memory footprint, but also lower quality.
TArray< FSkeletalMeshVertexAttributeInfo >	VertexAttributes
	List of vertex attributes to include for rendering and what type they should be.
FPerPlatformFloat	ScreenSize
	ScreenSize to display this LOD. The screen size is based around the projected diameter of the bounding sphere of the model. i.e. 0.5 means half the screen's maximum dimension.

Detailed Description

Struct containing information for a particular LOD level, such as materials and info for when to use it.

Member Function Documentation

opAssign()

FSkeletalMeshLODInfo & opAssign

(

FSkeletalMeshLODInfo

Other

)

SetbAllowCPUAccess()

void SetbAllowCPUAccess

(

bool

Value

)

Keeps this LODs data on the CPU so it can be used for things such as sampling in FX.

SetbAllowMeshDeformer()

void SetbAllowMeshDeformer

(

bool

Value

)

Whether a Mesh Deformer applied to the mesh asset or Skinned Mesh Component should be used on this LOD or not.

SetbBuildHalfEdgeBuffers()

void SetbBuildHalfEdgeBuffers

(

bool

Value

)

If true, we will cache/cook half edge data that provides vertex connectivity information across material sections, which may be useful for other systems like Mesh Deformer.

SetbSupportUniformlyDistributedSampling()

void SetbSupportUniformlyDistributedSampling

(

bool

Value

)

Mesh supports uniformly distributed sampling in constant time. Memory cost is 8 bytes per triangle. Example usage is uniform spawning of particles.

Member Data Documentation

BakePose

UAnimSequence BakePose

Pose which should be used to reskin vertex influences for which the bones will be removed in this LOD level, uses ref-pose by default.

BakePoseOverride

UAnimSequence BakePoseOverride

This is used when you are sharing the LOD settings, but you'd like to override the BasePose. This precedes prior to BakePose.

BonesToPrioritize

TArray<FBoneReference> BonesToPrioritize

Bones which should be prioritized for the quality, this will be weighted toward keeping source data. Use WeightOfPrioritization to control the value.

BonesToRemove

TArray<FBoneReference> BonesToRemove

Bones which should be removed from the skeleton for the LOD level.

BuildSettings

FSkeletalMeshBuildSettings BuildSettings

build settings to apply when building render data.

LODHysteresis

float32 LODHysteresis

Used to avoid 'flickering' when on LOD boundary. Only taken into account when moving from complex->simple.

MorphTargetPositionErrorTolerance

float32 MorphTargetPositionErrorTolerance

The Morph target position error tolerance in microns. Larger values result in better compression and lower memory footprint, but also lower quality.

ReductionSettings

FSkeletalMeshOptimizationSettings ReductionSettings

Reduction settings to apply when building render data.

ScreenSize

FPerPlatformFloat ScreenSize

ScreenSize to display this LOD. The screen size is based around the projected diameter of the bounding sphere of the model. i.e. 0.5 means half the screen's maximum dimension.

SectionsToPrioritize

TArray<FSectionReference> SectionsToPrioritize

Sections which should be prioritized for the quality, this will be weighted toward keeping source data. Use WeightOfPrioritization to control the value.

SkinCacheUsage

ESkinCacheUsage SkinCacheUsage

How this LOD uses the skin cache feature. Auto will defer to the default project global option. If Support Ray Tracing is enabled on the mesh, will imply Enabled.

VertexAttributes

TArray<FSkeletalMeshVertexAttributeInfo> VertexAttributes

List of vertex attributes to include for rendering and what type they should be.

WeightOfPrioritization

float32 WeightOfPrioritization

How much to consideration to give BonesToPrioritize and SectionsToPrioritize. The weight is an additional vertex simplification penalty where 0 means nothing.