public FSoftVertex(FAssetArchive Ar, bool isRigid = false)
{
SerializeForEditor(Ar);
UV = new FMeshUVFloat[MAX_SKELETAL_UV_SETS_UE4];
for (var i = 0; i < UV.Length; i++)
{
UV[i] = Ar.Read <FMeshUVFloat>();
}
Color = Ar.Read <FColor>();
if (!isRigid)
{
Infs = new FSkinWeightInfo(Ar, Ar.Ver >= EUnrealEngineObjectUE4Version.SUPPORT_8_BONE_INFLUENCES_SKELETAL_MESHES);
}
else
{
Infs = new FSkinWeightInfo();
Infs.BoneIndex[0] = Ar.Read <byte>();
Infs.BoneWeight[0] = 255;
}
}
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);
}
}
}
}