public 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);
}
}
// UE ref https://github.com/EpicGames/UnrealEngine/blob/26450a5a59ef65d212cf9ce525615c8bd673f42a/Engine/Source/Runtime/Engine/Private/SkeletalMeshLODRenderData.cpp#L710
public void SerializeRenderItem(FAssetArchive Ar, bool bHasVertexColors, byte numVertexColorChannels)
{
var stripDataFlags = Ar.Read <FStripDataFlags>();
var bIsLODCookedOut = false;
if (Ar.Game != EGame.GAME_Splitgate)
{
bIsLODCookedOut = Ar.ReadBoolean();
}
var bInlined = Ar.ReadBoolean();
RequiredBones = Ar.ReadArray <short>();
if (!stripDataFlags.IsDataStrippedForServer() && !bIsLODCookedOut)
{
Sections = new FSkelMeshSection[Ar.Read <int>()];
for (var i = 0; i < Sections.Length; i++)
{
Sections[i] = new FSkelMeshSection();
Sections[i].SerializeRenderItem(Ar);
}
ActiveBoneIndices = Ar.ReadArray <short>();
if (Ar.Game == EGame.GAME_KenaBridgeofSpirits)
{
Ar.ReadArray <byte>(); // EAssetType_array1
}
Ar.Position += 4; //var buffersSize = Ar.Read<uint>();
if (bInlined)
{
SerializeStreamedData(Ar, bHasVertexColors);
if (Ar.Game == EGame.GAME_RogueCompany)
{
Ar.Position += 12; // 1 (Long) + 2^16 (Int)
var elementSize = Ar.Read <int>();
var elementCount = Ar.Read <int>();
if (elementSize > 0 && elementCount > 0)
{
Ar.SkipBulkArrayData();
}
}
}
else
{
var bulk = new FByteBulkData(Ar);
if (bulk.Header.ElementCount > 0)
{
using (var tempAr = new FByteArchive("LodReader", bulk.Data, Ar.Versions))
{
SerializeStreamedData(tempAr, bHasVertexColors);
}
var skipBytes = 5;
if (FUE5ReleaseStreamObjectVersion.Get(Ar) < FUE5ReleaseStreamObjectVersion.Type.RemovingTessellation && !stripDataFlags.IsClassDataStripped((byte)EClassDataStripFlag.CDSF_AdjacencyData))
{
skipBytes += 5;
}
skipBytes += 4 * 4 + 2 * 4 + 2 * 4;
skipBytes += FSkinWeightVertexBuffer.MetadataSize(Ar);
Ar.Position += skipBytes;
if (HasClothData())
{
var clothIndexMapping = Ar.ReadArray <long>();
Ar.Position += 2 * 4;
}
var profileNames = Ar.ReadArray(Ar.ReadFName);
}
}
}
if (Ar.Game == EGame.GAME_ReadyOrNot)
{
Ar.Position += 4;
}
}