public static int MetadataSize(FArchive Ar)
{
var numBytes = 0;
var bNewWeightFormat = FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.UnlimitedBoneInfluences;
if (!Ar.Versions["SkeletalMesh.UseNewCookedFormat"])
{
numBytes = 2 * 4;
}
else if (!bNewWeightFormat)
{
numBytes = 3 * 4;
}
else
{
numBytes = 4 * 4;
if (FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.IncreaseBoneIndexLimitPerChunk)
{
numBytes += 4;
}
}
if (bNewWeightFormat)
{
numBytes += 4;
}
return(numBytes);
}
public static int MetadataSize(FArchive Ar)
{
var numBytes = 0;
var bNewWeightFormat = FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.UnlimitedBoneInfluences;
if (Ar.Game < EGame.GAME_UE4_24)
{
numBytes = 2 * 4;
}
else if (!bNewWeightFormat)
{
numBytes = 3 * 4;
}
else
{
numBytes = 4 * 4;
if (FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.IncreaseBoneIndexLimitPerChunk)
{
numBytes += 4;
}
}
if (bNewWeightFormat)
{
numBytes += 4;
}
return(numBytes);
}
public override void Deserialize(FAssetArchive Ar, long validPos)
{
base.Deserialize(Ar, validPos);
// UObject Properties
BoneTree = GetOrDefault <FBoneNode[]>(nameof(BoneTree));
VirtualBoneGuid = GetOrDefault <FGuid>(nameof(VirtualBoneGuid));
if (Ar.Ver >= EUnrealEngineObjectUE4Version.REFERENCE_SKELETON_REFACTOR)
{
ReferenceSkeleton = new FReferenceSkeleton(Ar);
}
if (Ar.Ver >= EUnrealEngineObjectUE4Version.FIX_ANIMATIONBASEPOSE_SERIALIZATION)
{
var numOfRetargetSources = Ar.Read <int>();
AnimRetargetSources = new Dictionary <FName, FReferencePose>(numOfRetargetSources);
for (var i = 0; i < numOfRetargetSources; i++)
{
var name = Ar.ReadFName();
var pose = new FReferencePose(Ar);
ReferenceSkeleton.AdjustBoneScales(pose.ReferencePose);
AnimRetargetSources[name] = pose;
}
}
else
{
Log.Warning(""); // not sure what to put here
}
if (Ar.Ver >= EUnrealEngineObjectUE4Version.SKELETON_GUID_SERIALIZATION)
{
Guid = Ar.Read <FGuid>();
}
if (Ar.Ver >= EUnrealEngineObjectUE4Version.SKELETON_ADD_SMARTNAMES)
{
var mapLength = Ar.Read <int>();
NameMappings = new Dictionary <FName, FSmartNameMapping>(mapLength);
for (var i = 0; i < mapLength; i++)
{
NameMappings[Ar.ReadFName()] = new FSmartNameMapping(Ar);
}
}
if (FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.StoreMarkerNamesOnSkeleton)
{
var stripDataFlags = Ar.Read <FStripDataFlags>();
if (!stripDataFlags.IsEditorDataStripped())
{
ExistingMarkerNames = Ar.ReadArray(Ar.ReadFName);
}
}
}
public FSkinWeightVertexBuffer(FArchive Ar, bool numSkelCondition)
{
var bNewWeightFormat = FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.UnlimitedBoneInfluences;
#region FSkinWeightDataVertexBuffer
var dataStripFlags = Ar.Read <FStripDataFlags>();
#region FSkinWeightDataVertexBuffer::SerializeMetaData
bool bVariableBonesPerVertex;
bool bExtraBoneInfluences;
uint maxBoneInfluences;
bool bUse16BitBoneIndex;
uint numVertices;
uint numBones;
if (Ar.Game < EGame.GAME_UE4_24)
{
bExtraBoneInfluences = Ar.ReadBoolean();
numVertices = Ar.Read <uint>();
maxBoneInfluences = bExtraBoneInfluences ? 8u : 4u;
}
else if (!bNewWeightFormat)
{
bExtraBoneInfluences = Ar.ReadBoolean();
if (FSkeletalMeshCustomVersion.Get(Ar) >= FSkeletalMeshCustomVersion.Type.SplitModelAndRenderData)
{
Ar.Position += 4; // var stride = Ar.Read<uint>();
}
numVertices = Ar.Read <uint>();
maxBoneInfluences = bExtraBoneInfluences ? 8u : 4u;
numBones = maxBoneInfluences * numVertices;
bVariableBonesPerVertex = false;
}
else
{
bVariableBonesPerVertex = Ar.ReadBoolean();
maxBoneInfluences = Ar.Read <uint>();
numBones = Ar.Read <uint>();
numVertices = Ar.Read <uint>();
bExtraBoneInfluences = maxBoneInfluences > _NUM_INFLUENCES_UE4;
// bUse16BitBoneIndex doesn't exist before version IncreaseBoneIndexLimitPerChunk
if (FAnimObjectVersion.Get(Ar) >= FAnimObjectVersion.Type.IncreaseBoneIndexLimitPerChunk)
{
bUse16BitBoneIndex = Ar.ReadBoolean();
}
}
#endregion
byte[] newData = Array.Empty <byte>();
if (!dataStripFlags.IsDataStrippedForServer())
{
if (!bNewWeightFormat)
{
Weights = Ar.ReadBulkArray(() => new FSkinWeightInfo(Ar, bExtraBoneInfluences));
}
else
{
newData = Ar.ReadBulkArray <byte>();
}
}
else
{
bExtraBoneInfluences = numSkelCondition;
}
#endregion
if (bNewWeightFormat)
{
#region FSkinWeightLookupVertexBuffer
var lookupStripFlags = Ar.Read <FStripDataFlags>();
#region FSkinWeightLookupVertexBuffer::SerializeMetaData
//if (bNewWeightFormat)
//{
var numLookupVertices = Ar.Read <int>();
//}
#endregion
if (!lookupStripFlags.IsDataStrippedForServer())
{
Ar.ReadBulkArray <uint>(); // LookupData
}
#endregion
// Convert influence data
if (newData.Length > 0)
{
using var tempAr = new FByteArchive("WeightsReader", newData, Ar.Versions);
Weights = new FSkinWeightInfo[numVertices];
for (var i = 0; i < Weights.Length; i++)
{
Weights[i] = new FSkinWeightInfo(tempAr, bExtraBoneInfluences);
}
}
}
}