private void ExportSkeletalMeshLod(CSkelMeshLod lod, List <CSkelMeshBone> bones, FArchiveWriter Ar, List <MaterialExporter>?materialExports, ETexturePlatform platform = ETexturePlatform.DesktopMobile)
{
var share = new CVertexShare();
var infHdr = new VChunkHeader();
share.Prepare(lod.Verts);
foreach (var vert in lod.Verts)
{
var weightsHash = vert.PackedWeights;
for (var i = 0; i < vert.Bone.Length; i++)
{
weightsHash ^= (uint)vert.Bone[i] << i;
}
share.AddVertex(vert.Position, vert.Normal, weightsHash);
}
ExportCommonMeshData(Ar, lod.Sections.Value, lod.Verts, lod.Indices.Value, share, materialExports, platform);
ExportSkeletonData(Ar, bones);
var numInfluences = 0;
for (var i = 0; i < share.Points.Count; i++)
{
for (var j = 0; j < Constants.NUM_INFLUENCES_UE4; j++)
{
if (lod.Verts[share.VertToWedge.Value[i]].Bone[j] < 0)
{
break;
}
numInfluences++;
}
}
infHdr.DataCount = numInfluences;
infHdr.DataSize = 12;
Ar.SerializeChunkHeader(infHdr, "RAWWEIGHTS");
for (var i = 0; i < share.Points.Count; i++)
{
var v = lod.Verts[share.VertToWedge.Value[i]];
var unpackedWeights = v.UnpackWeights();
for (var j = 0; j < Constants.NUM_INFLUENCES_UE4; j++)
{
if (v.Bone[j] < 0)
{
break;
}
Ar.Write(unpackedWeights[j]);
Ar.Write(i);
Ar.Write((int)v.Bone[j]);
}
}
ExportVertexColors(Ar, lod.VertexColors, lod.NumVerts);
ExportExtraUV(Ar, lod.ExtraUV.Value, lod.NumVerts, lod.NumTexCoords);
}
public static void ExportSkelMeshSections(int index, CSkelMeshLod lod, CMeshSection sect, List <MaterialExporter>?materialExports, MeshBuilder <VERTEX, VertexColorXTextureX, VertexJoints4> mesh)
{
string materialName;
if (sect.Material?.Load <UMaterialInterface>() is { } tex)
{
materialName = tex.Name;
var materialExporter = new MaterialExporter(tex, true);
materialExports?.Add(materialExporter);
}
public Gltf(string name, CSkelMeshLod lod, List <CSkelMeshBone> bones, List <MaterialExporter>?materialExports)
{
var mesh = new MeshBuilder <VERTEX, VertexColorXTextureX, VertexJoints4>(name);
for (var i = 0; i < lod.Sections.Value.Length; i++)
{
ExportSkelMeshSections(i, lod, lod.Sections.Value[i], materialExports, mesh);
}
var sceneBuilder = new SceneBuilder();
var armatureNodeBuilder = new NodeBuilder(name + ".ao");
var armature = CreateGltfSkeleton(bones, armatureNodeBuilder);
sceneBuilder.AddSkinnedMesh(mesh, Matrix4x4.Identity, armature);
Model = sceneBuilder.ToGltf2();
}
private void ExportSkeletalMeshLod(CSkelMeshLod lod, CSkelMeshBone[] bones, FCustomArchiveWriter writer, List <MaterialExporter>?materialExports)
{
var share = new CVertexShare();
var boneHdr = new VChunkHeader();
var infHdr = new VChunkHeader();
share.Prepare(lod.Verts);
foreach (var vert in lod.Verts)
{
var weightsHash = vert.PackedWeights;
for (var i = 0; i < vert.Bone.Length; i++)
{
weightsHash ^= (uint)vert.Bone[i] << i;
}
share.AddVertex(vert.Position, vert.Normal, weightsHash);
}
ExportCommonMeshData(writer, lod.Sections.Value, lod.Verts, lod.Indices.Value, share, materialExports);
var numBones = bones.Length;
boneHdr.DataCount = numBones;
boneHdr.DataSize = 120;
writer.SerializeChunkHeader(boneHdr, "REFSKELT");
for (var i = 0; i < numBones; i++)
{
var numChildren = 0;
for (var j = 0; j < numBones; j++)
{
if (j != i && bones[j].ParentIndex == i)
{
numChildren++;
}
}
var bone = new VBone
{
Name = bones[i].Name.Text,
NumChildren = numChildren,
ParentIndex = bones[i].ParentIndex,
BonePos = new VJointPosPsk
{
Position = bones[i].Position,
Orientation = bones[i].Orientation
}
};
// MIRROR_MESH
bone.BonePos.Orientation.Y *= -1;
bone.BonePos.Orientation.W *= -1;
bone.BonePos.Position.Y *= -1;
bone.Serialize(writer);
}
var numInfluences = 0;
for (var i = 0; i < share.Points.Count; i++)
{
for (var j = 0; j < 4; j++)
{
if (lod.Verts[share.VertToWedge.Value[i]].Bone[j] < 0)
{
break;
}
numInfluences++;
}
}
infHdr.DataCount = numInfluences;
infHdr.DataSize = 12;
writer.SerializeChunkHeader(infHdr, "RAWWEIGHTS");
for (var i = 0; i < share.Points.Count; i++)
{
var v = lod.Verts[share.VertToWedge.Value[i]];
var unpackedWeights = v.UnpackWeights();
for (var j = 0; j < 4; j++)
{
if (v.Bone[j] < 0)
{
break;
}
writer.Write(unpackedWeights[j]);
writer.Write(i);
writer.Write((int)v.Bone[j]);
}
}
ExportVertexColors(writer, lod.VertexColors, lod.NumVerts);
ExportExtraUV(writer, lod.ExtraUV.Value, lod.NumVerts, lod.NumTexCoords);
}
