Refactor asset streaming, error handling, and unit tests

- Add new compile-time constants and update package versions
- Refactor AssetEntry upload logic to return Result and propagate errors
- Enhance error handling in ResourceStreamingProcessor uploads
- Make ResourceStreamingContext a readonly struct
- Implement IDisposable and finalizers for resource cleanup
- Overhaul AssetManagerTest with async tests and improved mocks
- Add mock implementations for graphics interfaces for testing
- Refactor MockingCommandBuffer and MockingResourceDatabase for better simulation
- Update internals visibility for unit testing

src/Runtime/Ghost.Core/Ghost.Core.csproj

@@ -8,26 +8,26 @@
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-    <DefineConstants>$(DefineConstants);MHP_ENABLE_SAFETY_CHECKS;MHP_ENABLE_MIMALLOC</DefineConstants>
+    <DefineConstants>$(DefineConstants);MHP_ENABLE_SAFETY_CHECKS;MHP_ENABLE_STACKTRACE;MHP_ENABLE_MIMALLOC;MHP_FASTMATH</DefineConstants>
     <IsAotCompatible>True</IsAotCompatible>
     <IsTrimmable>True</IsTrimmable>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
-    <DefineConstants>$(DefineConstants);MHP_ENABLE_MIMALLOC</DefineConstants>
+    <DefineConstants>$(DefineConstants);MHP_ENABLE_MIMALLOC;MHP_FASTMATH</DefineConstants>
     <IsAotCompatible>True</IsAotCompatible>
     <IsTrimmable>True</IsTrimmable>
   </PropertyGroup>
 
   <ItemGroup>
     <PackageReference Include="Misaki.HighPerformance" Version="1.0.9" />
-    <PackageReference Include="Misaki.HighPerformance.Jobs" Version="3.1.3" />
+    <PackageReference Include="Misaki.HighPerformance.Jobs" Version="3.1.5" />
     <PackageReference Include="Misaki.HighPerformance.LowLevel" Version="1.6.17">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Misaki.HighPerformance.Mathematics" Version="1.3.3" />
-    <PackageReference Include="Misaki.HighPerformance.Mathematics.SPMD" Version="1.3.4" />
+    <PackageReference Include="Misaki.HighPerformance.Mathematics.SPMD" Version="1.3.5" />
     <PackageReference Include="System.IO.Hashing" Version="10.0.7" />
     <PackageReference Include="TerraFX.Interop.Mimalloc" Version="1.6.7.2" />
     <PackageReference Include="TerraFX.Interop.Windows" Version="10.0.26100.6" />

src/Runtime/Ghost.Engine/AssetManager.cs

@@ -1,7 +1,6 @@
 using Ghost.Core;
 using Ghost.Core.Utilities;
 using Ghost.Graphics;
-using Ghost.Graphics.Core;
 using Ghost.Graphics.RHI;
 using Misaki.HighPerformance.Jobs;
 using Misaki.HighPerformance.LowLevel;
@@ -54,7 +53,7 @@ internal partial class AssetEntry
 {
     private static readonly Action<AssetEntry>[] s_onCreation = new Action<AssetEntry>[(int)AssetType.Unknown + 1];
     private static readonly Func<AssetEntry, Result>[] s_onParseRawData = new Func<AssetEntry, Result>[(int)AssetType.Unknown + 1];
-    private static readonly Action<AssetEntry, ResourceStreamingContext>[] s_onRecordUpload = new Action<AssetEntry, ResourceStreamingContext>[(int)AssetType.Unknown + 1];
+    private static readonly Func<AssetEntry, ResourceStreamingContext, Result>[] s_onRecordUpload = new Func<AssetEntry, ResourceStreamingContext, Result>[(int)AssetType.Unknown + 1];
     private static readonly Action<AssetEntry, ResourceStreamingContext>[] s_onUploadComplete = new Action<AssetEntry, ResourceStreamingContext>[(int)AssetType.Unknown + 1];
     private static readonly Action<AssetEntry>[] s_onReleaseResource = new Action<AssetEntry>[(int)AssetType.Unknown + 1];
 
@@ -184,9 +183,9 @@ internal unsafe partial class AssetEntry
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public void OnRecordUploadCommands(ResourceStreamingContext context)
+    public Result OnRecordUploadCommands(ResourceStreamingContext context)
     {
-        s_onRecordUpload[(int)_assetType]?.Invoke(this, context);
+        return s_onRecordUpload[(int)_assetType]?.Invoke(this, context) ?? Result.Failure("Unsupported asset type.");
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -417,10 +416,10 @@ internal partial class AssetManager : IDisposable
 
         if (Interlocked.CompareExchange(ref entry.StateValue, (int)AssetState.Scheduled, (int)AssetState.Ready) == (int)AssetState.Ready)
         {
-            // Entry is in Ready state — the old texture is valid and will remain visible.
-            // Go directly to Scheduled → Loading → Loaded → Uploading → Ready again.
+            // Entry is in Ready state - the old texture is valid and will remain visible.
+            // Go directly to Scheduled -> Loading -> Loaded -> Uploading -> Ready again.
             // The swap cycle in RecordTextureUpload/OnTextureUploadComplete handles the 
-            // v1 → v2 transition exactly like the fallback → v1 transition.
+            // v1 to v2 transition exactly like the fallback to v1 transition.
             EnsureScheduled(entry);
         }
         else

src/Runtime/Ghost.Engine/ResourceStreamingProcessor.cs

@@ -62,17 +62,26 @@ internal class ResourceStreamingProcessor : IResourceStreamingProcessor
             }
 
             // Record copy commands into cmdCopy
-            entry.OnRecordUploadCommands(context);
+            if (entry.OnRecordUploadCommands(context).IsFailure)
+            {
+                Logger.Error($"Failed to record upload commands for asset {entry.AssetId}. Skipping upload.");
+                continue;
+            }
+
             entry.State = AssetState.Uploading;
 
             _pendingFinalize.Enqueue(entry);
             uploadCount++;
         }
 
-        var result = context.CopyPipeline.End();
-
         // 3. Submit the batch
-        if (uploadCount > 0 && result.IsSuccess)
+        if (context.CopyPipeline.End().IsFailure)
+        {
+            Logger.Error("Failed to submit copy command list for resource streaming.");
+            return;
+        }
+
+        if (uploadCount > 0)
         {
             _pendingCopyFenceValue = context.CopyPipeline.SignaledFenceValue();
         }

src/Runtime/Ghost.Graphics/AssemblyInfo.cs

@@ -5,6 +5,6 @@ using System.Runtime.CompilerServices;
 [assembly: InternalsVisibleTo("Ghost.Editor")]
 [assembly: InternalsVisibleTo("Ghost.Editor.Core")]
 [assembly: InternalsVisibleTo("Ghost.Graphics.Test")]
-[assembly: InternalsVisibleTo("Ghost.Graphics.Test-Winui")]
+[assembly: InternalsVisibleTo("Ghost.UnitTest")]
 
 [assembly: EngineAssembly]

src/Runtime/Ghost.Graphics/IResourceStreamingProcessor.cs

@@ -3,7 +3,7 @@ using Ghost.Graphics.Services;
 
 namespace Ghost.Graphics;
 
-internal ref struct ResourceStreamingContext
+internal readonly struct ResourceStreamingContext
 {
     public required AsyncCopyPipeline CopyPipeline
     {

src/Runtime/Ghost.Graphics/RenderSystem.cs

@@ -475,8 +475,12 @@ public class RenderSystem : IDisposable
 
         _renderPipeline.Dispose();
 
+        _fence.Dispose();
+
+        _shaderLibrary.Dispose();
         _resourceManager.Dispose();
         _swapChainManager.Dispose();
+        _asyncCopyPipeline.Dispose();
 
         _graphicsEngine.Dispose();
 

src/Runtime/Ghost.Graphics/Services/AsyncCopyPipeline.cs

@@ -3,7 +3,7 @@ using Ghost.Graphics.RHI;
 
 namespace Ghost.Graphics.Services;
 
-public class AsyncCopyPipeline
+public class AsyncCopyPipeline : IDisposable
 {
     private readonly IRenderDevice _device;
 
@@ -26,6 +26,11 @@ public class AsyncCopyPipeline
         _fence.Name = "AsyncCopyPipeline_Fence";
     }
 
+    ~AsyncCopyPipeline()
+    {
+        Dispose();
+    }
+
     internal void Begin()
     {
         _commandAllocator.Reset();
@@ -74,4 +79,13 @@ public class AsyncCopyPipeline
     {
         return _fence.WaitForValueAsync(_fenceValue);
     }
+
+    public void Dispose()
+    {
+        _commandAllocator.Dispose();
+        _commandBuffer.Dispose();
+        _fence.Dispose();
+
+        GC.SuppressFinalize(this);
+    }
 }

src/Runtime/Ghost.Graphics/Services/ResourceManager.cs

@@ -592,6 +592,7 @@ public sealed partial class ResourceManager : IDisposable
         _meshes.Dispose();
         _materials.Dispose();
         _shaders.Dispose();
+        _computeShaders.Dispose();
         _materialPalettes.Dispose();
 
         _resourceDatabase.ReleaseResource(_paletteOffsetBuffer.AsResource());