internal FSkelMeshSection(BinaryReader reader, FNameEntrySerialized[] name_map)
{
var flags = new FStripDataFlags(reader);
material_index = reader.ReadUInt16();
base_index = reader.ReadUInt32();
num_triangles = reader.ReadUInt32();
var _recompute_tangent = reader.ReadUInt32() != 0;
var _cast_shadow = reader.ReadUInt32() != 0;
base_vertex_index = reader.ReadUInt32();
cloth_mapping_data = reader.ReadTArray(() => new FApexClothPhysToRenderVertData(reader));
bool HasClothData = cloth_mapping_data.Length > 0;
bone_map = reader.ReadTArray(() => reader.ReadUInt16());
num_vertices = reader.ReadInt32();
max_bone_influences = reader.ReadInt32();
var _correspond_cloth_asset_index = reader.ReadInt16();
clothing_data = new FClothingSectionData(reader);
var _vertex_buffer = new FDuplicatedVerticesBuffer(reader);
disabled = reader.ReadUInt32() != 0;
}
//public FStaticMeshVertexDataUV? uvs;
public FStaticMeshVertexBuffer(BinaryReader reader)
{
high_precision_tangent_basis = false;
var flags = new FStripDataFlags(reader);
num_tex_coords = reader.ReadInt32();
num_vertices = reader.ReadInt32();
full_precision_uvs = reader.ReadInt32() != 0;
high_precision_tangent_basis = reader.ReadInt32() != 0;
if (!flags.server_data_stripped)
{
int ItemSize, ItemCount;
uv = new FStaticMeshUVItem4[num_vertices];
// Tangents
ItemSize = reader.ReadInt32();
ItemCount = reader.ReadInt32();
if (ItemCount != num_vertices)
{
throw new FileLoadException("Invalid item count/num_vertices at pos " + reader.BaseStream.Position);
}
var pos = reader.BaseStream.Position;
for (int i = 0; i < num_vertices; i++)
{
uv[i].SerializeTangents(reader, high_precision_tangent_basis);
}
if (reader.BaseStream.Position - pos != ItemCount * ItemSize)
{
throw new FileLoadException("Didn't read static mesh uvs correctly at pos " + reader.BaseStream.Position);
}
// Texture coordinates
ItemSize = reader.ReadInt32();
ItemCount = reader.ReadInt32();
if (ItemCount != num_vertices * num_tex_coords)
{
throw new FileLoadException("Invalid item count/num_vertices at pos " + reader.BaseStream.Position);
}
pos = reader.BaseStream.Position;
for (int i = 0; i < num_vertices; i++)
{
uv[i].SerializeTexcoords(reader, num_tex_coords, full_precision_uvs);
}
if (reader.BaseStream.Position - pos != ItemCount * ItemSize)
{
throw new FileLoadException("Didn't read static mesh texcoords correctly at pos " + reader.BaseStream.Position);
}
}
else
{
uv = null;
}
}
internal FStaticLODModel(BinaryReader reader, FNameEntrySerialized[] name_map, bool has_vertex_colors)
{
var flags = new FStripDataFlags(reader);
Sections = reader.ReadTArray(() => new FSkelMeshSection(reader, name_map));
Indices = new FMultisizeIndexContainer(reader);
ActiveBoneIndices = reader.ReadTArray(() => reader.ReadInt16());
RequiredBones = reader.ReadTArray(() => reader.ReadInt16());
if (flags.server_data_stripped || flags.class_data_stripped(2))
{
throw new FileLoadException("Could not read FSkelMesh, no renderable data");
}
var position_vertex_buffer = new FPositionVertexBuffer(reader);
var static_mesh_vertex_buffer = new FStaticMeshVertexBuffer(reader);
var skin_weight_vertex_buffer = new FSkinWeightVertexBuffer(reader);
if (has_vertex_colors)
{
var colour_vertex_buffer = new FColorVertexBuffer(reader);
}
AdjacencyIndexBuffer = default;
if (!flags.class_data_stripped(1))
{
AdjacencyIndexBuffer = new FMultisizeIndexContainer(reader);
}
ClothVertexBuffer = default;
if (HasClothData(Sections))
{
ClothVertexBuffer = new FSkeletalMeshVertexClothBuffer(reader);
}
SkinWeightProfilesData = new FSkinWeightProfilesData(reader, name_map);
VertexBufferGPUSkin = new FSkeletalMeshVertexBuffer();
VertexBufferGPUSkin.bUseFullPrecisionUVs = true;
NumVertices = position_vertex_buffer.num_verts;
NumTexCoords = static_mesh_vertex_buffer.num_tex_coords;
VertexBufferGPUSkin.VertsFloat = new FGPUVert4Float[NumVertices];
for (int i = 0; i < NumVertices; i++)
{
var V = new FGPUVert4Float();
var SV = static_mesh_vertex_buffer.uv[i];
V.Pos = position_vertex_buffer.verts[i];
V.Infs = skin_weight_vertex_buffer.weights[i];
V.Normal = SV.Normal; // i mean, we're not using it for anything else, are we?
V.UV = SV.UV;
VertexBufferGPUSkin.VertsFloat[i] = V;
}
}
public FColorVertexBuffer(BinaryReader reader)
{
var flags = new FStripDataFlags(reader);
stride = reader.ReadInt32();
num_verts = reader.ReadInt32();
colors = null;
if (!flags.server_data_stripped && num_verts > 0)
{
var _element_size = reader.ReadInt32();
colors = reader.ReadTArray(() => new FColor(reader));
}
}
public FSkinWeightVertexBuffer(BinaryReader reader)
{
var flags = new FStripDataFlags(reader);
var bExtraBoneInfluences = reader.ReadInt32() != 0;
var num_vertices = reader.ReadInt32();
if (flags.server_data_stripped)
{
weights = null;
return;
}
var _element_size = reader.ReadInt32();
var num_influences = bExtraBoneInfluences ? 8 : 4;
weights = reader.ReadTArray(() => new FSkinWeightInfo(reader, num_influences));
}
public FSkeletalMeshVertexClothBuffer(BinaryReader reader)
{
var flags = new FStripDataFlags(reader);
if (!flags.server_data_stripped)
{
// umodel: https://github.com/gildor2/UModel/blob/9a1fe8c77d136f018ba18c9e5c445fdcc5f374ae/Unreal/UnMesh4.cpp#L924
// https://github.com/gildor2/UModel/blob/39c635c13d61616297fb3e47f33e3fc20259626e/Unreal/UnCoreSerialize.cpp#L320
// ue4: https://github.com/EpicGames/UnrealEngine/blob/master/Engine/Source/Runtime/Engine/Private/SkeletalMeshLODRenderData.cpp#L758
// https://github.com/EpicGames/UnrealEngine/blob/master/Engine/Source/Runtime/Engine/Public/Rendering/SkeletalMeshLODRenderData.h#L119
int elem_size = reader.ReadInt32(); // umodel has this, might want to actually serialize this like how ue4 has it
int count = reader.ReadInt32();
reader.BaseStream.Seek(elem_size * count, SeekOrigin.Current);
cloth_index_mapping = reader.ReadTArray(() => reader.ReadUInt64());
}
cloth_index_mapping = null;
}
internal USkeletalMesh(BinaryReader reader, FNameEntrySerialized[] name_map, FObjectImport[] import_map)
{
BaseObject = new UObject(reader, name_map, import_map, "SkeletalMesh", true);
bool has_vertex_colors = false;
foreach (var prop in BaseObject.properties)
{
if (prop.name == "bHasVertexColors" && prop.tag == FPropertyTagType.BoolProperty)
{
has_vertex_colors = (bool)prop.tag_data;
}
else if (prop.name == "LODInfo")
{
var data = ((UScriptArray)prop.tag_data).data;
LODInfo = new FSkeletalMeshLODInfo[data.Length];
for (int i = 0; i < data.Length; i++)
{
var info = (UScriptStruct)data[i];
if (info.struct_name != "SkeletalMeshLODInfo")
{
throw new FileLoadException("Invalid lod info type");
}
var props = ((FStructFallback)info.struct_type).properties;
var newInfo = new FSkeletalMeshLODInfo();
foreach (var lodProp in props)
{
switch (lodProp.name)
{
case "DisplayFactor":
newInfo.DisplayFactor = (float)lodProp.tag_data;
break;
case "LODHysteresis":
newInfo.LODHysteresis = (float)lodProp.tag_data;
break;
case "LODMaterialMap":
newInfo.LODMaterialMap = ((UScriptArray)lodProp.tag_data).data.Cast <int>().ToArray();
break;
case "bEnableShadowCasting":
newInfo.bEnableShadowCasting = ((UScriptArray)lodProp.tag_data).data.Cast <bool>().ToArray();
break;
}
}
LODInfo[i] = newInfo;
}
}
}
var flags = new FStripDataFlags(reader);
Bounds = new FBoxSphereBounds(reader);
Materials = reader.ReadTArray(() => new FSkeletalMaterial(reader, name_map, import_map));
RefSkeleton = new FReferenceSkeleton(reader, name_map);
if (!flags.editor_data_stripped)
{
Console.WriteLine("Editor data still present!");
}
if (reader.ReadUInt32() == 0)
{
throw new FileLoadException("No cooked data");
}
LODModels = reader.ReadTArray(() => new FStaticLODModel(reader, name_map, has_vertex_colors));
uint serialize_guid = reader.ReadUInt32();
MaterialAssets = new string[Materials.Length];
for (int i = 0; i < Materials.Length; i++)
{
if (Materials[i].Material.import == null)
{
continue;
}
for (int j = 0; j < import_map.Length; j++)
{
if (import_map[j].class_name != "MaterialInstanceConstant" && import_map[j].object_name.EndsWith(Materials[i].Material.import))
{
MaterialAssets[i] = import_map[j].object_name;
break;
}
}
}
}