public void CombineMesh(ChunkMeshData chunkMeshData) { //获取输出meshData Mesh.MeshDataArray outMeshDataArray = Mesh.AllocateWritableMeshData(1); Mesh.MeshData outMesh = outMeshDataArray[0]; Mesh.MeshDataArray outMeshDataArrayCollider = Mesh.AllocateWritableMeshData(1); Mesh.MeshData outMeshCollider = outMeshDataArrayCollider[0]; Mesh.MeshDataArray outMeshDataArrayTrigger = Mesh.AllocateWritableMeshData(1); Mesh.MeshData outMeshTrigger = outMeshDataArrayTrigger[0]; int subMeshCount = 0; int subMeshIndexCount = 0; List <int> trisDataAll = new List <int>(); List <SubMeshDescriptor> listSubMeshDescriptor = new List <SubMeshDescriptor>(); for (int i = 0; i < chunkMeshData.dicTris.Length; i++) { List <int> trisData = chunkMeshData.dicTris[i]; if (trisData.IsNull()) { continue; } trisDataAll.AddRange(trisData); SubMeshDescriptor subMeshDesc = new SubMeshDescriptor { indexStart = subMeshIndexCount, indexCount = trisData.Count }; listSubMeshDescriptor.Add(subMeshDesc); subMeshCount++; subMeshIndexCount += trisData.Count; } VertexStruct[] listVertex = chunkMeshData.GetVertexStruct(); outMesh.SetVertexBufferParams(listVertex.Length, vertexAttributeDescriptors); VertexStruct[] listVertexCollider = chunkMeshData.GetVertexStructCollider(); outMeshCollider.SetVertexBufferParams(listVertexCollider.Length, vertexAttributeDescriptors); VertexStruct[] listVertexTrigger = chunkMeshData.GetVertexStructTrigger(); outMeshTrigger.SetVertexBufferParams(listVertexTrigger.Length, vertexAttributeDescriptors); //获取点信息 NativeArray <VertexStruct> vertexData = outMesh.GetVertexData <VertexStruct>(); NativeArray <VertexStruct> vertexDataCollider = outMeshCollider.GetVertexData <VertexStruct>(); NativeArray <VertexStruct> vertexDataTrigger = outMeshTrigger.GetVertexData <VertexStruct>(); //设置点信息 NativeArray <VertexStruct> .Copy(listVertex, vertexData); NativeArray <VertexStruct> .Copy(listVertexCollider, vertexDataCollider); NativeArray <VertexStruct> .Copy(listVertexTrigger, vertexDataTrigger); //设置三角数量 outMesh.SetIndexBufferParams(trisDataAll.Count, IndexFormat.UInt32); outMeshCollider.SetIndexBufferParams(chunkMeshData.trisCollider.Count, IndexFormat.UInt32); outMeshTrigger.SetIndexBufferParams(chunkMeshData.trisTrigger.Count, IndexFormat.UInt32); //获取三角下标 NativeArray <int> triangelData = outMesh.GetIndexData <int>(); NativeArray <int> triangelDataCollider = outMeshCollider.GetIndexData <int>(); NativeArray <int> triangelDataTrigger = outMeshTrigger.GetIndexData <int>(); NativeArray <int> .Copy(trisDataAll.ToArray(), triangelData); NativeArray <int> .Copy(chunkMeshData.trisCollider.ToArray(), triangelDataCollider); NativeArray <int> .Copy(chunkMeshData.trisTrigger.ToArray(), triangelDataTrigger); outMesh.subMeshCount = subMeshCount; outMeshCollider.subMeshCount = 1; outMeshTrigger.subMeshCount = 1; for (int i = 0; i < listSubMeshDescriptor.Count; i++) { outMesh.SetSubMesh(i, listSubMeshDescriptor[i]); } outMeshCollider.SetSubMesh(0, new SubMeshDescriptor { indexStart = 0, indexCount = chunkMeshData.trisCollider.Count }); outMeshTrigger.SetSubMesh(0, new SubMeshDescriptor { indexStart = 0, indexCount = chunkMeshData.trisTrigger.Count }); Mesh.ApplyAndDisposeWritableMeshData(outMeshDataArray, chunkMesh); Mesh.ApplyAndDisposeWritableMeshData(outMeshDataArrayCollider, chunkMeshCollider); Mesh.ApplyAndDisposeWritableMeshData(outMeshDataArrayTrigger, chunkMeshTrigger); chunkMesh.RecalculateNormals(); chunkMesh.RecalculateBounds(); //chunkMeshCollider.RecalculateNormals(); //chunkMeshCollider.RecalculateBounds(); //chunkMeshTrigger.RecalculateNormals(); //chunkMeshTrigger.RecalculateBounds(); vertexData.Dispose(); triangelData.Dispose(); vertexDataCollider.Dispose(); triangelDataCollider.Dispose(); vertexDataTrigger.Dispose(); triangelDataTrigger.Dispose(); }