/// <summary>
/// VrmLib.Mesh => UnityEngine.Mesh
/// </summary>
/// <param name="mesh"></param>
/// <param name="src"></param>
/// <param name="skin"></param>
public static Mesh LoadSharedMesh(VrmLib.Mesh src, Skin skin = null)
{
Profiler.BeginSample("MeshImporterShared.LoadSharedMesh");
var mesh = new Mesh();
var positions = src.VertexBuffer.Positions.Bytes.Reinterpret <Vector3>(1);
var normals = src.VertexBuffer.Normals?.Bytes.Reinterpret <Vector3>(1) ?? default;
var texCoords = src.VertexBuffer.TexCoords?.Bytes.Reinterpret <Vector2>(1) ?? default;
var colors = src.VertexBuffer.Colors?.Bytes.Reinterpret <Color>(1) ?? default;
var weights = src.VertexBuffer.Weights?.GetAsVector4Array() ?? default;
var joints = src.VertexBuffer.Joints?.GetAsSkinJointsArray() ?? default;
using (var vertices = new NativeArray <MeshVertex>(positions.Length, Allocator.TempJob))
{
// JobとBindPoseの更新を並行して行う
var jobHandle =
new InterleaveMeshVerticesJob(vertices, positions, normals, texCoords, colors, weights, joints)
.Schedule(vertices.Length, 1);
JobHandle.ScheduleBatchedJobs();
// BindPoseを更新
if (weights.IsCreated && joints.IsCreated)
{
if (weights.Length != positions.Length || joints.Length != positions.Length)
{
throw new ArgumentException();
}
if (skin != null)
{
mesh.bindposes = skin.InverseMatrices.GetSpan <Matrix4x4>().ToArray();
}
}
// Jobを完了
jobHandle.Complete();
// 頂点を更新
MeshVertex.SetVertexBufferParamsToMesh(mesh, vertices.Length);
mesh.SetVertexBufferData(vertices, 0, 0, vertices.Length);
// 出力のNativeArrayを開放
}
// Indexを更新
switch (src.IndexBuffer.ComponentType)
{
case AccessorValueType.UNSIGNED_BYTE:
{
var intIndices = src.IndexBuffer.GetAsIntArray();
mesh.SetIndexBufferParams(intIndices.Length, IndexFormat.UInt32);
mesh.SetIndexBufferData(intIndices, 0, 0, intIndices.Length);
break;
}
case AccessorValueType.UNSIGNED_SHORT:
{
var shortIndices = src.IndexBuffer.Bytes.Reinterpret <ushort>(1);
mesh.SetIndexBufferParams(shortIndices.Length, IndexFormat.UInt16);
mesh.SetIndexBufferData(shortIndices, 0, 0, shortIndices.Length);
break;
}
case AccessorValueType.UNSIGNED_INT:
{
var intIndices = src.IndexBuffer.Bytes.Reinterpret <uint>(1);
mesh.SetIndexBufferParams(intIndices.Length, IndexFormat.UInt32);
mesh.SetIndexBufferData(intIndices, 0, 0, intIndices.Length);
break;
}
default:
throw new NotImplementedException();
}
// SubMeshを更新
mesh.subMeshCount = src.Submeshes.Count;
for (var i = 0; i < src.Submeshes.Count; ++i)
{
var subMesh = src.Submeshes[i];
mesh.SetSubMesh(i, new SubMeshDescriptor(subMesh.Offset, subMesh.DrawCount));
}
// MorphTargetを更新
foreach (var morphTarget in src.MorphTargets)
{
var morphTargetPositions =
morphTarget.VertexBuffer.Positions != null
? morphTarget.VertexBuffer.Positions.GetSpan <Vector3>().ToArray()
: new Vector3[mesh.vertexCount] // dummy
;
mesh.AddBlendShapeFrame(morphTarget.Name, 100.0f, morphTargetPositions, null, null);
}
// 各種パラメーターを再計算
mesh.RecalculateBounds();
mesh.RecalculateTangents();
if (src.VertexBuffer.Normals == null)
{
mesh.RecalculateNormals();
}
Profiler.EndSample();
return(mesh);
}