fixed generic types cannot have explicit layout issue

- JobScheduler: dynamic spin-wait thresholds for lower latency; removed SLEEP_THRESHOLD constant.
- SPMCQueue: switched to explicit struct layout, removed manual padding, fixed power-of-two capacity bug.
- WorkerThread: enhanced work-stealing with additional cascade loop.
- AllocationHandle: added IsValid property.
- VirtualMemoryBlock: fixed Dispose to pass correct size to Munmap.
- Added UnsafeString and UnsafeText for zero-allocation string/text handling.
- Updated project metadata, versions, and repository URLs.
- Minor inlining/optimization tweaks in GGXMipGenerationBenchmark.

src/Misaki.HighPerformance.Jobs/JobScheduler.cs

@@ -121,9 +121,6 @@ internal sealed class WaitAnyItem : IThreadPoolWorkItem
 /// </summary>
 public sealed unsafe partial class JobScheduler : IDisposable
 {
-    // Don't sleep indefinitely because that causes our 1ms job to become 15ms.
-    private const int SLEEP_THRESHOLD = -1;
-
     private readonly ConcurrentSlotMap<JobInfo> _jobInfoPool;
     private readonly ConcurrentQueue<JobHandle>[] _jobQueues;
     private readonly WorkerThread[] _workerThreads;
@@ -834,7 +831,7 @@ public sealed unsafe partial class JobScheduler : IDisposable
 
             if (!madeProgress)
             {
-                spin.SpinOnce(SLEEP_THRESHOLD);
+                spin.SpinOnce(-1); // Never sleep and yield to achieve lowest latency for single job completion.
             }
         }
     }
@@ -854,6 +851,7 @@ public sealed unsafe partial class JobScheduler : IDisposable
         }
 
         var spin = new SpinWait();
+        var sleepThreshold = handles.Length * 20;
         var completedCount = 0;
 
         while (true)
@@ -877,7 +875,7 @@ public sealed unsafe partial class JobScheduler : IDisposable
                 return;
             }
 
-            spin.SpinOnce(SLEEP_THRESHOLD);
+            spin.SpinOnce(sleepThreshold);
         }
     }
 
@@ -889,6 +887,7 @@ public sealed unsafe partial class JobScheduler : IDisposable
     public JobHandle WaitAny(params ReadOnlySpan<JobHandle> handles)
     {
         var spin = new SpinWait();
+        var sleepThreshold = handles.Length * 10;
 
         while (true)
         {
@@ -900,7 +899,7 @@ public sealed unsafe partial class JobScheduler : IDisposable
                 }
             }
 
-            spin.SpinOnce(SLEEP_THRESHOLD);
+            spin.SpinOnce(sleepThreshold);
         }
     }
 

src/Misaki.HighPerformance.Jobs/Misaki.HighPerformance.Jobs.csproj

@@ -6,13 +6,20 @@
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
-    <AssemblyVersion>3.1.7</AssemblyVersion>
+    <AssemblyVersion>3.1.8</AssemblyVersion>
     <Version>$(AssemblyVersion)</Version>
     <Authors>Misaki</Authors>
     <PackageProjectUrl>https://git.personalnas.com/Misaki/Misaki.HighPerformance.git</PackageProjectUrl>
-    <RepositoryUrl>https://git.personalnas.com/Misaki/Misaki.HighPerformance.git</RepositoryUrl>
+    <RepositoryUrl>https://github.com/misakieku/Misaki.HighPerformance.git</RepositoryUrl>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageReadmeFile>README.md</PackageReadmeFile>
+    <PackageTags>job-system;multithreading;concurrency;task-scheduler;work-stealing;zero-allocation;0gc;dag;dependency-graph;game-engine;ecs;high-performance;spmc</PackageTags>
+    <Description>
+      A high-performance, zero-allocation (0 GC), and zero-closure job system designed for custom game engines and data-oriented design (DOD).
+      Features a lock-free Work-Stealing scheduler (SPMC) with DAG-based multi-dependency resolution.
+      Includes a blazingly fast O(1) branchless priority queue (High/Normal/Low) using Cascade LUTs.
+      Uniquely supports both unmanaged and managed jobs seamlessly via internal pooling, offering maximum flexibility without compromising C# GC performance.
+    </Description>
   </PropertyGroup>
 
   <ItemGroup>

src/Misaki.HighPerformance.Jobs/SPMCQueue.cs

@@ -7,16 +7,16 @@ namespace Misaki.HighPerformance.Jobs;
 [StructLayout(LayoutKind.Sequential)]
 public class SPMCQueue<T>
 {
-    private unsafe struct padding
+    private struct __padding
     {
-        private fixed byte _padding[64];
+        private unsafe fixed byte _padding[64];
     }
 
     private readonly T[] _queue;
     private readonly int _mask;
 
     private int _head;
-    private padding _padding; // Prevent false sharing between head and tail
+    private __padding _padding;
     private int _tail;
 
     public bool IsEmpty => Volatile.Read(ref _tail) - Volatile.Read(ref _head) <= 0;
@@ -30,8 +30,9 @@ public class SPMCQueue<T>
     /// <param name="capacity">The capacity of the queue.</param>
     public SPMCQueue(int capacity)
     {
-        _queue = new T[(int)BitOperations.RoundUpToPowerOf2((uint)capacity)];
+        var powerOfTwoCapacity = (int)BitOperations.RoundUpToPowerOf2((uint)capacity);
-        _mask = capacity - 1;
+        _queue = new T[powerOfTwoCapacity];
+        _mask = powerOfTwoCapacity - 1;
     }
 
     /// <summary>

src/Misaki.HighPerformance.Jobs/WorkerThread.cs

@@ -84,6 +84,11 @@ internal class WorkerThread : IDisposable
             {
                 return true;
             }
+        }
+
+        for (var offset = 0; offset < helperThreadCount; offset++)
+        {
+            var p = cascade[index + offset];
 
             for (var i = 1; i < _scheduler.WorkerCount; i++)
             {

src/Misaki.HighPerformance.LowLevel/Buffer/IAllocator.cs

@@ -143,6 +143,8 @@ public readonly unsafe struct AllocationHandle
     private readonly ReallocFunc _realloc;
     private readonly FreeFunc _free;
 
+    public bool IsValid => _alloc != null && _realloc != null && _free != null;
+
     public AllocationHandle(void* state, AllocFunc alloc, ReallocFunc realloc, FreeFunc free)
     {
         _state = state;

src/Misaki.HighPerformance.LowLevel/Buffer/VirtualMemoryBlock.cs

@@ -23,10 +23,12 @@ public unsafe struct VirtualMemoryBlock : IDisposable
         }
 
         var addr = _baseAddress;
+        var size = _size;
+
         _baseAddress = null;
         _size = 0;
         _committed = 0;
 
-        MemoryUtility.Munmap(addr, _size);
+        MemoryUtility.Munmap(addr, size);
     }
 }

src/Misaki.HighPerformance.LowLevel/Collections/Contracts/IUnsafeCollection.cs

@@ -78,3 +78,21 @@ public interface IUnsafeHashCollection<T> : IDisposable
     /// <param name="option">Specifies allocation options that may affect how memory is managed during the resize operation.</param>
     void Resize(int newSize, AllocationOption option);
 }
+
+public interface IUnsafeBitSet
+{
+    int Count
+    {
+        get;
+    }
+
+    int NextSetBit(int startIndex);
+    void SetBit(int index);
+    void ClearBit(int index);
+    bool IsSet(int index);
+
+    void SetAll();
+    void ClearAll();
+
+    Span<uint> AsSpan();
+}

src/Misaki.HighPerformance.LowLevel/Collections/UnsafeBitSet.cs

@@ -1,4 +1,5 @@
 using Misaki.HighPerformance.LowLevel.Buffer;
+using Misaki.HighPerformance.LowLevel.Collections.Contracts;
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
 using System.Numerics;
@@ -33,7 +34,7 @@ internal class UnsafeBitSetDebugView
 }
 
 [DebuggerTypeProxy(typeof(UnsafeBitSetDebugView))]
-public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
+public unsafe struct UnsafeBitSet : IUnsafeBitSet, IDisposable, IEquatable<UnsafeBitSet>
 {
     public ref struct Iterator
     {
@@ -54,9 +55,9 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
         }
     }
 
-    internal const int _BIT_SIZE = sizeof(uint) * 8 - 1;           // 31
+    internal const int BIT_SIZE = sizeof(uint) * 8 - 1;           // 31
-    internal const int _INDEX_SIZE = 5;                              // log_2(BitSize + 1)
+    internal const int INDEX_SIZE = 5;                              // log_2(BitSize + 1)
-    internal const int _MASK = (1 << 5) - 1;                         // 0x1F, the mask to get the bit index inside a uint
+    internal const int MASK = (1 << 5) - 1;                         // 0x1F, the mask to get the bit index inside a uint
     internal static readonly int s_padding = Vector<uint>.Count;      // The padding used for vectorization, the amount of uints required for being vectorized basically
 
     private UnsafeArray<uint> _bits;
@@ -76,7 +77,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     /// <summary>
     /// Gets the total number of bits represented by the current instance.
     /// </summary>
-    public readonly int Count => _bits.Count << _INDEX_SIZE;
+    public readonly int Count => _bits.Count << INDEX_SIZE;
 
     public readonly bool IsCreated => _bits.IsCreated;
 
@@ -96,7 +97,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     /// <param name="option">The allocation option.</param>
     public UnsafeBitSet(int minimalLength, AllocationHandle handle, AllocationOption option = AllocationOption.None)
     {
-        var uints = (minimalLength >> _INDEX_SIZE) + int.Sign(minimalLength & _BIT_SIZE);
+        var uints = (minimalLength >> INDEX_SIZE) + int.Sign(minimalLength & BIT_SIZE);
         var length = RoundToPadding(uints);
 
         _bits = new UnsafeArray<uint>(length, handle, option);
@@ -113,12 +114,12 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
         _bits.CopyFrom(bits);
 
         _highestBit = 0;
-        _max = _bits.Count * (_BIT_SIZE + 1) - 1; // Calculate the maximum index in use
+        _max = _bits.Count * (BIT_SIZE + 1) - 1; // Calculate the maximum index in use
         for (var i = 0; i < _bits.Count; i++)
         {
             if (_bits[i] != 0)
             {
-                _highestBit = Math.Max(_highestBit, i * (_BIT_SIZE + 1) + BitOperations.Log2(_bits[i]) + 1);
+                _highestBit = Math.Max(_highestBit, i * (BIT_SIZE + 1) + BitOperations.Log2(_bits[i]) + 1);
             }
         }
     }
@@ -137,7 +138,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static int RequiredLength(int id)
     {
-        return (id >> _INDEX_SIZE) + int.Sign(id & _BIT_SIZE);
+        return (id >> INDEX_SIZE) + int.Sign(id & BIT_SIZE);
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -155,13 +156,13 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public readonly bool IsSet(int index)
     {
-        var b = index >> _INDEX_SIZE;
+        var b = index >> INDEX_SIZE;
         if (b >= _bits.Count)
         {
             return false;
         }
 
-        return (_bits[b] & 1 << (index & _BIT_SIZE)) != 0;
+        return (_bits[b] & 1 << (index & BIT_SIZE)) != 0;
     }
 
     /// <summary>
@@ -172,7 +173,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public void SetBit(int index)
     {
-        var b = index >> _INDEX_SIZE;
+        var b = index >> INDEX_SIZE;
         if (b >= _bits.Count)
         {
             _bits.Resize(index);
@@ -181,8 +182,8 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
 
         // Track highest set bit
         _highestBit = Math.Max(_highestBit, index);
-        _max = _highestBit / (_BIT_SIZE + 1) + 1;
+        _max = _highestBit / (BIT_SIZE + 1) + 1;
-        _bits[b] |= 1u << (index & _BIT_SIZE);
+        _bits[b] |= 1u << (index & BIT_SIZE);
     }
 
     /// <summary>
@@ -192,13 +193,13 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public void ClearBit(int index)
     {
-        var b = index >> _INDEX_SIZE;
+        var b = index >> INDEX_SIZE;
         if (b >= _bits.Count)
         {
             return;
         }
 
-        _bits[b] &= ~(1u << (index & _BIT_SIZE));
+        _bits[b] &= ~(1u << (index & BIT_SIZE));
     }
 
     /// <summary>
@@ -209,8 +210,8 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     {
         _bits.AsSpan().Fill(0xffffffff);
 
-        _highestBit = _bits.Count * (_BIT_SIZE + 1) - 1;
+        _highestBit = _bits.Count * (BIT_SIZE + 1) - 1;
-        _max = _highestBit / (_BIT_SIZE + 1) + 1;
+        _max = _highestBit / (BIT_SIZE + 1) + 1;
     }
 
     /// <summary>
@@ -229,21 +230,21 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     /// </summary>
     public readonly int NextSetBit(int startIndex)
     {
-        var wordIndex = startIndex >> _BIT_SIZE;
+        var wordIndex = startIndex >> BIT_SIZE;
         if (wordIndex >= _bits.Count)
         {
             return -1;
         }
 
         // Mask off bits below startIndex in the first word:
-        var word = _bits[wordIndex] & ~0u << (startIndex & _MASK);
+        var word = _bits[wordIndex] & ~0u << (startIndex & MASK);
         while (true)
         {
             if (word != 0)
             {
                 // get the least-significant set bit
                 var bit = BitOperations.TrailingZeroCount(word);
-                return (wordIndex << _BIT_SIZE) + bit;
+                return (wordIndex << BIT_SIZE) + bit;
             }
 
             wordIndex++;
@@ -259,7 +260,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     public void Resize(int minimalLength, AllocationOption option = AllocationOption.None)
     {
         var oldSize = _bits.Count;
-        var uints = (minimalLength >> _INDEX_SIZE) + int.Sign(minimalLength & _BIT_SIZE);
+        var uints = (minimalLength >> INDEX_SIZE) + int.Sign(minimalLength & BIT_SIZE);
         var length = RoundToPadding(uints);
 
         _bits.Resize(length, option);
@@ -712,7 +713,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
     /// <returns>The <see cref="Span{T}"/>.</returns>
     public readonly Span<uint> AsSpan()
     {
-        var max = _highestBit / (_BIT_SIZE + 1) + 1;
+        var max = _highestBit / (BIT_SIZE + 1) + 1;
         return _bits.AsSpan()[..max];
     }
 
@@ -824,7 +825,7 @@ public unsafe struct UnsafeBitSet : IDisposable, IEquatable<UnsafeBitSet>
 /// represents a non resizable collection of bits.
 /// Used to set, check and clear bits on a allocated <see cref="UnsafeBitSet"/> or on the stack.
 /// </summary>
-public readonly ref struct SpanBitSet : IEquatable<SpanBitSet>
+public readonly ref struct SpanBitSet : IUnsafeBitSet, IEquatable<SpanBitSet>
 {
     public ref struct Iterator
     {
@@ -845,15 +846,17 @@ public readonly ref struct SpanBitSet : IEquatable<SpanBitSet>
         }
     }
 
-    private const int _BIT_SIZE = sizeof(uint) * 8 - 1; // 31
+    private const int BIT_SIZE = sizeof(uint) * 8 - 1; // 31
     // NOTE: Is a byte not 8 bits?
-    private const int _BYTE_SIZE = 5; // log_2(BitSize + 1)
+    private const int BYTE_SIZE = 5; // log_2(BitSize + 1)
 
     /// <summary>
     /// The bits from the bitset.
     /// </summary>
     private readonly Span<uint> _bits;
 
+    public int Count => _bits.Length << BYTE_SIZE;
+
     /// <summary>
     /// Initializes a new instance of the <see cref="UnsafeBitSet" /> class.
     /// </summary>
@@ -874,13 +877,13 @@ public readonly ref struct SpanBitSet : IEquatable<SpanBitSet>
     /// <returns>True if it is, otherwise false</returns>
     public bool IsSet(int index)
     {
-        var b = index >> _BYTE_SIZE;
+        var b = index >> BYTE_SIZE;
         if (b >= _bits.Length)
         {
             return false;
         }
 
-        return (_bits[b] & 1 << (index & _BIT_SIZE)) != 0;
+        return (_bits[b] & 1 << (index & BIT_SIZE)) != 0;
     }
 
     /// <summary>
@@ -890,13 +893,13 @@ public readonly ref struct SpanBitSet : IEquatable<SpanBitSet>
     /// <param name="index">The index.</param>
     public void SetBit(int index)
     {
-        var b = index >> _BYTE_SIZE;
+        var b = index >> BYTE_SIZE;
         if (b >= _bits.Length)
         {
             return;
         }
 
-        _bits[b] |= 1u << (index & _BIT_SIZE);
+        _bits[b] |= 1u << (index & BIT_SIZE);
     }
 
     /// <summary>
@@ -905,13 +908,13 @@ public readonly ref struct SpanBitSet : IEquatable<SpanBitSet>
     /// <param name="index">The index.</param>
     public void ClearBit(int index)
     {
-        var b = index >> _BYTE_SIZE;
+        var b = index >> BYTE_SIZE;
         if (b >= _bits.Length)
         {
             return;
         }
 
-        _bits[b] &= ~(1u << (index & _BIT_SIZE));
+        _bits[b] &= ~(1u << (index & BIT_SIZE));
     }
 
     /// <summary>
@@ -936,21 +939,21 @@ public readonly ref struct SpanBitSet : IEquatable<SpanBitSet>
 
     public int NextSetBit(int startIndex)
     {
-        var wordIndex = startIndex >> _BIT_SIZE;
+        var wordIndex = startIndex >> BIT_SIZE;
         if (wordIndex >= _bits.Length)
         {
             return -1;
         }
 
         // Mask off bits below startIndex in the first word:
-        var word = _bits[wordIndex] & ~0u << (startIndex & UnsafeBitSet._MASK);
+        var word = _bits[wordIndex] & ~0u << (startIndex & UnsafeBitSet.MASK);
         while (true)
         {
             if (word != 0)
             {
                 // get the least-significant set bit
                 var bit = BitOperations.TrailingZeroCount(word);
-                return (wordIndex << _BIT_SIZE) + bit;
+                return (wordIndex << BIT_SIZE) + bit;
             }
 
             wordIndex++;

src/Misaki.HighPerformance.LowLevel/Collections/UnsafeString.cs

@@ -0,0 +1,101 @@
+using Misaki.HighPerformance.LowLevel.Buffer;
+using System.Text;
+
+namespace Misaki.HighPerformance.LowLevel.Collections;
+
+public unsafe struct UnsafeString : IDisposable
+{
+    private UnsafeArray<char> _chars;
+
+    public readonly int Length => _chars.Length;
+
+    public readonly char this[int index] => _chars[index];
+
+    public UnsafeString(ReadOnlySpan<char> span, AllocationHandle handle)
+    {
+        _chars = new UnsafeArray<char>(span.Length, handle);
+        span.CopyTo(_chars.AsSpan());
+    }
+
+    public UnsafeString(UnsafeString other)
+    {
+        _chars = new UnsafeArray<char>(other.Length, other._chars.AllocationHandle);
+        other.AsSpan().CopyTo(_chars.AsSpan());
+    }
+
+    public readonly UnsafeString Copy(AllocationHandle handle = default)
+    {
+        handle = handle.IsValid ? handle : _chars.AllocationHandle;
+        var clone = new UnsafeString(AsSpan(), handle);
+        return clone;
+    }
+
+    public readonly ReadOnlySpan<char> AsSpan()
+    {
+        return _chars.AsSpan();
+    }
+
+    public readonly void* GetUnsafePtr()
+    {
+        return _chars.GetUnsafePtr();
+    }
+
+    public readonly override string ToString()
+    {
+        return new string(_chars.AsSpan());
+    }
+
+    public void Dispose()
+    {
+        _chars.Dispose();
+    }
+}
+
+
+public unsafe struct UnsafeText : IDisposable
+{
+    private UnsafeArray<byte> _chars;
+
+    public readonly int Length => _chars.Length;
+
+    public readonly byte this[int index] => _chars[index];
+
+    public UnsafeText(ReadOnlySpan<byte> span, AllocationHandle handle)
+    {
+        _chars = new UnsafeArray<byte>(span.Length, handle);
+        span.CopyTo(_chars.AsSpan());
+    }
+
+    public UnsafeText(UnsafeText other)
+    {
+        _chars = new UnsafeArray<byte>(other.Length, other._chars.AllocationHandle);
+        other.AsSpan().CopyTo(_chars.AsSpan());
+    }
+
+    public readonly UnsafeText Copy(AllocationHandle handle = default)
+    {
+        handle = handle.IsValid ? handle : _chars.AllocationHandle;
+        var clone = new UnsafeText(AsSpan(), handle);
+        return clone;
+    }
+
+    public readonly ReadOnlySpan<byte> AsSpan()
+    {
+        return _chars.AsSpan();
+    }
+
+    public readonly void* GetUnsafePtr()
+    {
+        return _chars.GetUnsafePtr();
+    }
+
+    public readonly override string ToString()
+    {
+        return Encoding.UTF8.GetString(_chars.AsSpan());
+    }
+
+    public void Dispose()
+    {
+        _chars.Dispose();
+    }
+}

src/Misaki.HighPerformance.LowLevel/Misaki.HighPerformance.LowLevel.csproj

@@ -7,12 +7,19 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <Authors>Misaki</Authors>
-    <AssemblyVersion>1.7.3</AssemblyVersion>
+    <AssemblyVersion>1.7.4</AssemblyVersion>
     <Version>$(AssemblyVersion)</Version>
     <PackageProjectUrl>https://git.personalnas.com/Misaki/Misaki.HighPerformance.git</PackageProjectUrl>
-    <RepositoryUrl>https://git.personalnas.com/Misaki/Misaki.HighPerformance.git</RepositoryUrl>
+    <RepositoryUrl>https://github.com/misakieku/Misaki.HighPerformance.git</RepositoryUrl>
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <PackageReadmeFile>README.md</PackageReadmeFile>
+    <PackageTags>native;unsafe;memory;allocator;mmap;arena;tlsf;freelist;high-performance;dod;ecs;native-collections;native-array;game-engine</PackageTags>
+    <Description>
+      A true high-performance, low-level native memory and collection library for C#.
+      Features a pluggable memory allocation architecture (AllocationHandle) with built-in allocators: Arena, FreeList, TLSF, and Malloc (mimalloc support).
+      Includes fully unmanaged native collections (UnsafeArray, UnsafeList, UnsafeHashMap, etc.) and cross-platform mmap/munmap wrappers.
+      Designed for Data-Oriented Design (DOD), custom game engines, and zero-allocation systems.
+    </Description>
     <IncludeBuildOutput>false</IncludeBuildOutput>
     <ContentTargetFolders>contentFiles</ContentTargetFolders>
   </PropertyGroup>

src/Misaki.HighPerformance.Test/Benchmark/GGXMipGenerationBenchmark.cs

@@ -172,7 +172,7 @@ internal unsafe struct GGXMipGenerationJobSPMD : IJobSPMD<float, int>
     }
 }
 
-internal unsafe struct GGXMipGenerationJobSPMD<TFloat, TInt> : IJobParallelFor
+internal unsafe struct GGXMipGenerationJobSPMD<TFloat, TInt> : IJobParallel
     where TFloat : unmanaged, ISPMDLane<TFloat, float>
     where TInt : unmanaged, ISPMDLane<TInt, int>
 {
@@ -249,21 +249,12 @@ internal unsafe struct GGXMipGenerationJobSPMD<TFloat, TInt> : IJobParallelFor
     }
 
     [MethodImpl(MethodImplOptions.AggressiveOptimization)]
-    public void Execute(int loopIndex, ref readonly JobExecutionContext ctx)
+    private readonly void ProcessPixel(int local_i, MipLevel* pLevel)
     {
-        var m = 0;
-        while (m < numMipLevels - 1 && loopIndex >= pMipLevels[m + 1].offset)
-        {
-            m++;
-        }
-
-        var pLevel = &pMipLevels[m];
-
         var w = (int)pLevel->width;
         var h = (int)pLevel->height;
         var pData = pLevel->data;
 
-        var local_i = loopIndex - pLevel->offset;
         var x = local_i % w;
         var y = local_i / w;
         var u = (float)x / (w - 1);
@@ -358,6 +349,33 @@ internal unsafe struct GGXMipGenerationJobSPMD<TFloat, TInt> : IJobParallelFor
         pData[out_idx + 1] = prefilteredColor.y;
         pData[out_idx + 2] = prefilteredColor.z;
     }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining | MethodImplOptions.AggressiveOptimization)]
+    public void Execute(int startIndex, int endIndex, ref readonly JobExecutionContext ctx)
+    {
+        var m = 0;
+        while (m < numMipLevels - 1 && startIndex >= pMipLevels[m + 1].offset)
+        {
+            m++;
+        }
+
+        var i = startIndex;
+
+        while (i < endIndex)
+        {
+            var pLevel = &pMipLevels[m];
+            var next = m + 1 < numMipLevels ? pMipLevels[m + 1].offset : int.MaxValue;
+            var stop = Math.Min(endIndex, next);
+
+            for (; i < stop; i++)
+            {
+                var local_i = i - pLevel->offset;
+                ProcessPixel(local_i, pLevel);
+            }
+
+            m++;
+        }
+    }
 }
 
 [SimpleJob(RunStrategy.ColdStart, launchCount: 1, warmupCount: 0, iterationCount: 1, invocationCount: 1, id: "QuickRun")]
@@ -388,8 +406,8 @@ public unsafe class GGXMipGenerationBenchmark
     [GlobalSetup]
     public void Setup()
     {
-        //const string imagePath = "F:\\c\\SimpleRayTracer\\native\\assets\\hdri\\golden_gate_hills_1k.hdr";
+        const string imagePath = "F:\\c\\SimpleRayTracer\\native\\assets\\hdri\\golden_gate_hills_1k.hdr";
-        const string imagePath = "C:\\Users\\Misaki\\Downloads\\grasslands_sunset_4k.hdr";
+        //const string imagePath = "C:\\Users\\Misaki\\Downloads\\grasslands_sunset_4k.hdr";
         using var stream = new FileStream(imagePath, FileMode.Open, FileAccess.Read);
         _image = ImageResultFloat.FromStream(stream, ColorComponents.RGB);
 
@@ -517,7 +535,7 @@ public unsafe class GGXMipGenerationBenchmark
                 radicalInverse_VdCLut = _radicalInverse_VdCLut
             };
 
-            handle = _jobScheduler.ScheduleParallelFor(in job, _totalPixel, 64);
+            handle = _jobScheduler.ScheduleParallel(in job, _totalPixel, 64);
         }
         else
         {
@@ -529,7 +547,7 @@ public unsafe class GGXMipGenerationBenchmark
                 radicalInverse_VdCLut = _radicalInverse_VdCLut
             };
 
-            handle = _jobScheduler.ScheduleParallelFor(in job, _totalPixel, 64);
+            handle = _jobScheduler.ScheduleParallel(in job, _totalPixel, 64);
         }
 
         _jobScheduler.Wait(handle);