private void SerializeStreamedData(FArchive Ar, bool bHasVertexColors)
{
var stripDataFlags = Ar.Read <FStripDataFlags>();
Indices = new FMultisizeIndexContainer(Ar);
VertexBufferGPUSkin = new FSkeletalMeshVertexBuffer {
bUseFullPrecisionUVs = true
};
var positionVertexBuffer = new FPositionVertexBuffer(Ar);
var staticMeshVertexBuffer = new FStaticMeshVertexBuffer(Ar);
var skinWeightVertexBuffer = new FSkinWeightVertexBuffer(Ar, VertexBufferGPUSkin.bExtraBoneInfluences);
if (bHasVertexColors)
{
var newColorVertexBuffer = new FColorVertexBuffer(Ar);
ColorVertexBuffer = new FSkeletalMeshVertexColorBuffer(newColorVertexBuffer.Data);
}
if (FUE5ReleaseStreamObjectVersion.Get(Ar) < FUE5ReleaseStreamObjectVersion.Type.RemovingTessellation && !stripDataFlags.IsClassDataStripped((byte)EClassDataStripFlag.CDSF_AdjacencyData))
{
AdjacencyIndexBuffer = new FMultisizeIndexContainer(Ar);
}
if (HasClothData())
{
ClothVertexBuffer = new FSkeletalMeshVertexClothBuffer(Ar);
}
var skinWeightProfilesData = new FSkinWeightProfilesData(Ar);
if (Ar.Game >= EGame.GAME_UE5_0) // Note: This was added in UE4.27, but we're only reading it on UE5 for compatibility with Fortnite
{
var rayTracingData = Ar.ReadArray <byte>();
}
NumVertices = positionVertexBuffer.NumVertices;
NumTexCoords = staticMeshVertexBuffer.NumTexCoords;
VertexBufferGPUSkin.VertsFloat = new FGPUVertFloat[NumVertices];
for (var i = 0; i < VertexBufferGPUSkin.VertsFloat.Length; i++)
{
VertexBufferGPUSkin.VertsFloat[i] = new FGPUVertFloat
{
Pos = positionVertexBuffer.Verts[i],
Infs = skinWeightVertexBuffer.Weights[i],
Normal = staticMeshVertexBuffer.UV[i].Normal,
UV = staticMeshVertexBuffer.UV[i].UV
};
}
}
private void SerializeRenderItem_Legacy(FAssetArchive Ar, bool bHasVertexColors, byte numVertexColorChannels)
{
var stripDataFlags = Ar.Read <FStripDataFlags>();
Sections = new FSkelMeshSection[Ar.Read <int>()];
for (var i = 0; i < Sections.Length; i++)
{
Sections[i] = new FSkelMeshSection();
Sections[i].SerializeRenderItem(Ar);
}
Indices = new FMultisizeIndexContainer(Ar);
VertexBufferGPUSkin = new FSkeletalMeshVertexBuffer {
bUseFullPrecisionUVs = true
};
ActiveBoneIndices = Ar.ReadArray <short>();
RequiredBones = Ar.ReadArray <short>();
if (!stripDataFlags.IsDataStrippedForServer() && !stripDataFlags.IsClassDataStripped((byte)EClassDataStripFlag.CDSF_MinLodData))
{
var positionVertexBuffer = new FPositionVertexBuffer(Ar);
var staticMeshVertexBuffer = new FStaticMeshVertexBuffer(Ar);
var skinWeightVertexBuffer = new FSkinWeightVertexBuffer(Ar, VertexBufferGPUSkin.bExtraBoneInfluences);
if (!bHasVertexColors && Ar.Game == EGame.GAME_BORDERLANDS3)
{
for (var i = 0; i < numVertexColorChannels; i++)
{
var newColorVertexBuffer = new FColorVertexBuffer(Ar);
ColorVertexBuffer = new FSkeletalMeshVertexColorBuffer(newColorVertexBuffer.Data);
}
}
else if (bHasVertexColors)
{
var newColorVertexBuffer = new FColorVertexBuffer(Ar);
ColorVertexBuffer = new FSkeletalMeshVertexColorBuffer(newColorVertexBuffer.Data);
}
if (!stripDataFlags.IsClassDataStripped((byte)EClassDataStripFlag.CDSF_AdjacencyData))
{
AdjacencyIndexBuffer = new FMultisizeIndexContainer(Ar);
}
if (HasClothData())
{
ClothVertexBuffer = new FSkeletalMeshVertexClothBuffer(Ar);
}
NumVertices = positionVertexBuffer.NumVertices;
NumTexCoords = staticMeshVertexBuffer.NumTexCoords;
VertexBufferGPUSkin.VertsFloat = new FGPUVertFloat[NumVertices];
for (var i = 0; i < VertexBufferGPUSkin.VertsFloat.Length; i++)
{
VertexBufferGPUSkin.VertsFloat[i] = new FGPUVertFloat
{
Pos = positionVertexBuffer.Verts[i],
Infs = skinWeightVertexBuffer.Weights[i],
Normal = staticMeshVertexBuffer.UV[i].Normal,
UV = staticMeshVertexBuffer.UV[i].UV
};
}
}
if (Ar.Game >= EGame.GAME_UE4_23)
{
var skinWeightProfilesData = new FSkinWeightProfilesData(Ar);
}
}