/// <summary>
/// Decodes a Draco mesh
/// </summary>
/// <param name="mesh">MeshData used to create the mesh</param>
/// <param name="encodedData">Compressed Draco data</param>
/// <param name="requireNormals">If draco does not contain normals and this is set to true, normals are calculated.</param>
/// <param name="requireTangents">If draco does not contain tangents and this is set to true, tangents and normals are calculated.</param>
/// <param name="weightsAttributeId">Draco attribute ID that contains bone weights (for skinning)</param>
/// <param name="jointsAttributeId">Draco attribute ID that contains bone joint indices (for skinning)</param>
/// <param name="forceUnityLayout">Enforces vertex buffer layout with highest compatibility. Enable this if you want to use blend shapes on the resulting mesh</param>
/// <returns>A DecodeResult</returns>
public async Task <DecodeResult> ConvertDracoMeshToUnity(
Mesh.MeshData mesh,
byte[] encodedData,
bool requireNormals = false,
bool requireTangents = false,
int weightsAttributeId = -1,
int jointsAttributeId = -1,
bool forceUnityLayout = false
)
{
var encodedDataPtr = PinGCArrayAndGetDataAddress(encodedData, out var gcHandle);
var result = await ConvertDracoMeshToUnity(
mesh,
encodedDataPtr,
encodedData.Length,
requireNormals,
requireTangents,
weightsAttributeId,
jointsAttributeId,
forceUnityLayout
);
UnsafeUtility.ReleaseGCObject(gcHandle);
return(result);
}
/// <summary>
/// Decodes a Draco mesh
/// </summary>
/// <param name="mesh">MeshData used to create the mesh</param>
/// <param name="encodedData">Compressed Draco data</param>
/// <param name="requireNormals">If draco does not contain normals and this is set to true, normals are calculated.</param>
/// <param name="requireTangents">If draco does not contain tangents and this is set to true, tangents and normals are calculated.</param>
/// <param name="weightsAttributeId">Draco attribute ID that contains bone weights (for skinning)</param>
/// <param name="jointsAttributeId">Draco attribute ID that contains bone joint indices (for skinning)</param>
/// <param name="forceUnityLayout">Enforces vertex buffer layout with highest compatibility. Enable this if you want to use blend shapes on the resulting mesh</param>
/// <returns>A DecodeResult</returns>
public async Task <DecodeResult> ConvertDracoMeshToUnity(
Mesh.MeshData mesh,
NativeArray <byte> encodedData,
bool requireNormals = false,
bool requireTangents = false,
int weightsAttributeId = -1,
int jointsAttributeId = -1,
bool forceUnityLayout = false
#if UNITY_EDITOR
, bool sync = false
#endif
)
{
var encodedDataPtr = GetUnsafeReadOnlyIntPtr(encodedData);
return(await ConvertDracoMeshToUnity(
mesh,
encodedDataPtr,
encodedData.Length,
requireNormals,
requireTangents,
weightsAttributeId,
jointsAttributeId,
forceUnityLayout
#if UNITY_EDITOR
, sync
#endif
));
}
public void GenerateMeshes(GeneratedSurfaceList generatedMesh, Mesh.MeshData meshData)
{
for (int surfaceIndex = 0; surfaceIndex < generatedMesh.surfaceIndices.length; surfaceIndex++)
{
// get surface from surfaceGroup
// write to meshData, based on surface specific information
}
}
async Task <DecodeResult> ConvertDracoMeshToUnity(
Mesh.MeshData mesh,
IntPtr encodedData,
int size,
bool requireNormals,
bool requireTangents,
int weightsAttributeId = -1,
int jointsAttributeId = -1
#if UNITY_EDITOR
, bool sync = false
#endif
)
public DracoNative(
#if DRACO_MESH_DATA
Mesh.MeshData mesh,
#endif
bool convertSpace = true
)
{
this.convertSpace = convertSpace;
#if DRACO_MESH_DATA
this.mesh = mesh;
#endif
}
public void CreateMesh(
out bool calculateNormals,
bool requireNormals = false,
bool requireTangents = false,
int weightsAttributeId = -1,
int jointsAttributeId = -1
)
{
Profiler.BeginSample("CreateMesh");
var dracoMesh = (DracoMesh *)dracoTempResources[meshPtrIndex];
allocator = dracoMesh->numVertices > persistentDataThreshold ? Allocator.Persistent : Allocator.TempJob;
CalculateVertexParams(dracoMesh, requireNormals, requireTangents, weightsAttributeId, jointsAttributeId, out calculateNormals);
Profiler.BeginSample("SetParameters");
#if DRACO_MESH_DATA
indicesCount = dracoMesh->numFaces * 3;
#else
mesh = new Mesh();
#endif
mesh.SetIndexBufferParams(dracoMesh->numFaces * 3, IndexFormat.UInt32);
var vertexParams = new List <VertexAttributeDescriptor>(attributes.Count);
foreach (var map in attributes)
{
vertexParams.Add(map.GetVertexAttributeDescriptor());
}
mesh.SetVertexBufferParams(dracoMesh->numVertices, vertexParams.ToArray());
#if !DRACO_MESH_DATA
AllocateIndices(dracoMesh);
AllocateVertexBuffers(dracoMesh);
#endif
Profiler.EndSample(); // SetParameters
Profiler.EndSample(); // CreateMesh
}
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();
}
public JobHandle DecodeVertexData(
#if UNITY_EDITOR
bool sync = false
#endif
)
{
var decodeVerticesJob = new DecodeVerticesJob()
{
result = dracoDecodeResult,
dracoTempResources = dracoTempResources
};
var decodeVerticesJobHandle = decodeVerticesJob.Schedule();
#if UNITY_EDITOR
if (sync)
{
decodeVerticesJobHandle.Complete();
}
#endif
var indicesJob = new GetDracoIndicesJob()
{
result = dracoDecodeResult,
dracoTempResources = dracoTempResources,
flip = convertSpace,
#if DRACO_MESH_DATA
mesh = mesh
#else
indices = indices
#endif
};
NativeArray <JobHandle> jobHandles = new NativeArray <JobHandle>(attributes.Count + 1, allocator);
jobHandles[0] = indicesJob.Schedule(decodeVerticesJobHandle);
#if UNITY_EDITOR
if (sync)
{
jobHandles[0].Complete();
}
#endif
int jobIndex = 1;
foreach (var mapBase in attributes)
{
var map = mapBase as AttributeMap;
if (map == null)
{
continue;
}
if (streamMemberCount[map.stream] > 1)
{
var job = new GetDracoDataInterleavedJob()
{
result = dracoDecodeResult,
dracoTempResources = dracoTempResources,
attribute = map.dracoAttribute,
stride = streamStrides[map.stream],
flip = map.convertSpace,
#if DRACO_MESH_DATA
mesh = mesh,
streamIndex = map.stream,
offset = map.offset
#else
dstPtr = vDataPtr[map.stream] + map.offset
#endif
};
jobHandles[jobIndex] = job.Schedule(decodeVerticesJobHandle);
}
else
{
var job = new GetDracoDataJob()
{
result = dracoDecodeResult,
dracoTempResources = dracoTempResources,
attribute = map.dracoAttribute,
flip = map.convertSpace,
#if DRACO_MESH_DATA
mesh = mesh,
streamIndex = map.stream
#else
dstPtr = vDataPtr[map.stream] + map.offset
#endif
};
jobHandles[jobIndex] = job.Schedule(decodeVerticesJobHandle);
}
#if UNITY_EDITOR
if (sync)
{
jobHandles[jobIndex].Complete();
}
#endif
jobIndex++;
}
var jobHandle = JobHandle.CombineDependencies(jobHandles);
jobHandles.Dispose();
var releaseDracoMeshJob = new ReleaseDracoMeshJob {
dracoTempResources = dracoTempResources
};
var releaseDreacoMeshJobHandle = releaseDracoMeshJob.Schedule(jobHandle);
#if UNITY_EDITOR
if (sync)
{
releaseDreacoMeshJobHandle.Complete();
}
#endif
return(releaseDreacoMeshJobHandle);
}
/// <summary>
/// Get the actual index count of a <see cref="Mesh.MeshData"/> object.
/// </summary>
public static int GetIndexCount(this Mesh.MeshData md)
{
return(md.indexFormat == IndexFormat.UInt16
? md.GetIndexData <ushort>().Length
: md.GetIndexData <uint>().Length);
}
