fix for Mesh with StreamData

Author: AXiX-official

UnityAsset.NET.TypeTreeHelper/Compiler/Helper.cs

@@ -58,6 +58,7 @@ public static class Helper
         "Rectf",
         "SecondarySpriteTexture",
         "BoneWeights4",
+        "ChannelInfo",
     ];
 
     public static HashSet<string> NoInterfaceTypes =
@@ -76,6 +77,7 @@ public static class Helper
         "Quaternionf", // workaround
         "Rectf",
         "BoneWeights4",
+        "ChannelInfo",
     ];
 
     public static HashSet<string> IncludedPPTrGenricTypes =

UnityAsset.NET/AssetHelper/MeshHelper.cs

@@ -275,6 +275,13 @@ public static ProcessedMesh GetProcessedMesh(AssetManager assetManager, IMesh me
 
         // ReadVertexData
         var vertexData = mesh.m_VertexData;
+        var dataSize = vertexData.m_DataSize;
+        var streamData = mesh.m_StreamData;
+        if (streamData is not null && streamData.size > 0)
+        {
+            if (streamData.TryGetData(assetManager, out var data))
+                dataSize = data;
+        }
         var streams = vertexData.GetStreams(version!);
         var vertexCount = vertexData.m_VertexCount;
         processedMesh.m_VertexCount = (int)vertexCount;
@@ -305,7 +312,7 @@ public static ProcessedMesh GetProcessedMesh(AssetManager assetManager, IMesh me
                 for (int d = 0; d < dimension; d++)
                 {
                     var componentOffset = vertexOffset + componentByteSize * d;
-                    Buffer.BlockCopy(vertexData.m_DataSize.data, componentOffset, componentBytes, componentByteSize * (v * dimension + d), componentByteSize);
+                    Buffer.BlockCopy(dataSize.data, componentOffset, componentBytes, componentByteSize * (v * dimension + d), componentByteSize);
                 }
             }
 

UnityAsset.NET/TypeTree/PreDefined/Generated/Interfaces/IChannelInfo.g.cs

@@ -17,7 +17,7 @@ public int? m_CurrentChannels
         }
 
         public uint m_VertexCount { get; }
-        public IChannelInfo[] m_Channels { get; }
+        public ChannelInfo[] m_Channels { get; }
         public TypelessData m_DataSize { get; }
     }
 }

UnityAsset.NET/TypeTree/PreDefined/Generated/Interfaces/IVertexData.g.cs

@@ -0,0 +1,34 @@
+using UnityAsset.NET.IO;
+
+namespace UnityAsset.NET.TypeTree.PreDefined.Types;
+
+public struct ChannelInfo : IPreDefinedInterface
+{
+    public string ClassName => "ChannelInfo";
+    public byte stream { get; }
+    public byte offset { get; }
+    public byte format { get; }
+    public byte dimension { get; }
+    
+    public ChannelInfo(IReader reader)
+    {
+        stream = reader.ReadByte();
+        offset = reader.ReadByte();
+        format = reader.ReadByte();
+        dimension = (Byte)(reader.ReadByte() & 0xF);
+    }
+
+    public AssetNode? ToAssetNode(string name = "Base")
+    {
+        var rootAssetNode = new AssetNode
+        {
+            Name = name,
+            TypeName = "ChannelInfo"
+        };
+        rootAssetNode.Children.Add(new AssetNode { Name = "stream", TypeName = "UInt8", Value = stream });
+        rootAssetNode.Children.Add(new AssetNode { Name = "offset", TypeName = "UInt8", Value = offset });
+        rootAssetNode.Children.Add(new AssetNode { Name = "format", TypeName = "UInt8", Value = format });
+        rootAssetNode.Children.Add(new AssetNode { Name = "dimension", TypeName = "UInt8", Value = dimension });
+        return rootAssetNode;
+    }
+}

UnityAsset.NET/TypeTree/PreDefined/Types/ChannelInfo.cs

@@ -1,4 +1,4 @@
-using System.Text;
+using System.Diagnostics.CodeAnalysis;
 using UnityAsset.NET.Files;
 using UnityAsset.NET.IO;
 using UnityAsset.NET.IO.Reader;
@@ -32,4 +32,21 @@ public StreamingInfo(IReader reader)
         root.Children.Add(new AssetNode { Name = "path", TypeName = "string", Value = this.path });
         return root;
     }
+
+    public bool TryGetData(AssetManager mgr, [NotNullWhen(true)]out TypelessData? data)
+    {
+        data = null;
+        var filePath = path.Split("/")[^1];
+        if (mgr.LoadedFiles.TryGetValue(filePath, out var file))
+        {
+            if (file is IReaderProvider rp)
+            {
+                var reader = rp.CreateReader();
+                reader.Position = (long)offset;
+                data = new TypelessData((int)size, reader.ReadBytes((int)size));
+                return true;
+            }
+        }
+        return false;
+    }
 }

UnityAsset.NET/TypeTree/PreDefined/Types/StreamingInfo.cs

@@ -13,6 +13,12 @@ public TypelessData(IReader reader)
         size = reader.ReadInt32();
         data = reader.ReadBytes(size);
     }
+
+    public TypelessData(int size, byte[] data)
+    {
+        this.size = size;
+        this.data = data;
+    }
 
     public AssetNode? ToAssetNode(string name = "Base")
     {