public readonly FStaticMeshUVItem[] UV; // TangentsData ?
public FStaticMeshVertexBuffer(FArchive Ar)
{
var stripDataFlags = new FStripDataFlags(Ar, (int)UE4Version.VER_UE4_STATIC_SKELETAL_MESH_SERIALIZATION_FIX);
// SerializeMetaData
NumTexCoords = Ar.Read <int>();
Strides = Ar.Game < EGame.GAME_UE4_19 ? Ar.Read <int>() : -1;
NumVertices = Ar.Read <int>();
UseFullPrecisionUVs = Ar.ReadBoolean();
UseHighPrecisionTangentBasis = Ar.Game >= EGame.GAME_UE4_12 && Ar.ReadBoolean();
if (!stripDataFlags.IsDataStrippedForServer())
{
if (Ar.Game < EGame.GAME_UE4_19)
{
UV = Ar.ReadBulkArray(() => new FStaticMeshUVItem(Ar, UseHighPrecisionTangentBasis, NumTexCoords, UseFullPrecisionUVs));
}
else
{
// BulkSerialize
var itemSize = Ar.Read <int>();
var itemCount = Ar.Read <int>();
var position = Ar.Position;
if (itemCount != NumVertices)
{
throw new ParserException($"NumVertices={itemCount} != NumVertices={NumVertices}");
}
var tempTangents = Ar.ReadArray(NumVertices, () => FStaticMeshUVItem.SerializeTangents(Ar, UseHighPrecisionTangentBasis));
if (Ar.Position - position != itemCount * itemSize)
{
throw new ParserException($"Read incorrect amount of tangent bytes, at {Ar.Position}, should be: {position + itemSize * itemCount} behind: {position + (itemSize * itemCount) - Ar.Position}");
}
itemSize = Ar.Read <int>();
itemCount = Ar.Read <int>();
position = Ar.Position;
if (itemCount != NumVertices * NumTexCoords)
{
throw new ParserException($"NumVertices={itemCount} != {NumVertices * NumTexCoords}");
}
var uv = Ar.ReadArray(NumVertices, () => FStaticMeshUVItem.SerializeTexcoords(Ar, NumTexCoords, UseFullPrecisionUVs));
if (Ar.Position - position != itemCount * itemSize)
{
throw new ParserException($"Read incorrect amount of Texture Coordinate bytes, at {Ar.Position}, should be: {position + itemSize * itemCount} behind: {position + (itemSize * itemCount) - Ar.Position}");
}
UV = new FStaticMeshUVItem[NumVertices];
for (var i = 0; i < NumVertices; i++)
{
UV[i] = new FStaticMeshUVItem(tempTangents[i], uv[i]);
}
}
}
else
{
UV = new FStaticMeshUVItem[0];
}
}
public readonly FStaticMeshUVItem[] UV; // TangentsData ?
public FStaticMeshVertexBuffer(FArchive Ar)
{
var stripDataFlags = new FStripDataFlags(Ar, FPackageFileVersion.CreateUE4Version(EUnrealEngineObjectUE4Version.STATIC_SKELETAL_MESH_SERIALIZATION_FIX));
// SerializeMetaData
NumTexCoords = Ar.Read <int>();
Strides = Ar.Game < EGame.GAME_UE4_19 ? Ar.Read <int>() : -1;
NumVertices = Ar.Read <int>();
UseFullPrecisionUVs = Ar.ReadBoolean();
UseHighPrecisionTangentBasis = Ar.Game >= EGame.GAME_UE4_12 && Ar.ReadBoolean();
if (!stripDataFlags.IsDataStrippedForServer())
{
if (Ar.Game < EGame.GAME_UE4_19)
{
UV = Ar.ReadBulkArray(() => new FStaticMeshUVItem(Ar, UseHighPrecisionTangentBasis, NumTexCoords, UseFullPrecisionUVs));
}
else
{
var tempTangents = Array.Empty <FPackedNormal[]>();
if (Ar.Game == EGame.GAME_StarWarsJediFallenOrder && Ar.ReadBoolean()) // bDropNormals
{
goto texture_coordinates;
}
// BulkSerialize
var itemSize = Ar.Read <int>();
var itemCount = Ar.Read <int>();
var position = Ar.Position;
if (itemCount != NumVertices)
{
throw new ParserException($"NumVertices={itemCount} != NumVertices={NumVertices}");
}
tempTangents = Ar.ReadArray(NumVertices, () => FStaticMeshUVItem.SerializeTangents(Ar, UseHighPrecisionTangentBasis));
if (Ar.Position - position != itemCount * itemSize)
{
throw new ParserException($"Read incorrect amount of tangent bytes, at {Ar.Position}, should be: {position + itemSize * itemCount} behind: {position + (itemSize * itemCount) - Ar.Position}");
}
texture_coordinates:
itemSize = Ar.Read <int>();
itemCount = Ar.Read <int>();
position = Ar.Position;
if (itemCount != NumVertices * NumTexCoords)
{
throw new ParserException($"NumVertices={itemCount} != {NumVertices * NumTexCoords}");
}
var uv = Ar.ReadArray(NumVertices, () => FStaticMeshUVItem.SerializeTexcoords(Ar, NumTexCoords, UseFullPrecisionUVs));
if (Ar.Position - position != itemCount * itemSize)
{
throw new ParserException($"Read incorrect amount of Texture Coordinate bytes, at {Ar.Position}, should be: {position + itemSize * itemCount} behind: {position + (itemSize * itemCount) - Ar.Position}");
}
UV = new FStaticMeshUVItem[NumVertices];
for (var i = 0; i < NumVertices; i++)
{
if (Ar.Game == EGame.GAME_StarWarsJediFallenOrder && tempTangents.Length == 0)
{
UV[i] = new FStaticMeshUVItem(new [] { new FPackedNormal(0), new FPackedNormal(0), new FPackedNormal(0) }, uv[i]);
}
else
{
UV[i] = new FStaticMeshUVItem(tempTangents[i], uv[i]);
}
}
}
}
else
{
UV = Array.Empty <FStaticMeshUVItem>();
}
}
