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feat: implement core graphics rendering system and D3D12 RHI backend infrastructure

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Misaki
2026-04-18 21:03:05 +09:00
parent abd5ad74d5
commit 4f5556ee1b
25 changed files with 1072 additions and 924 deletions
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61
src/Runtime/Ghost.Graphics.D3D12/D3D12ResourceDatabase.cs
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@@ -7,7 +7,6 @@ using Misaki.HighPerformance.LowLevel.Collections;
using System.Diagnostics;
using System.Runtime.InteropServices;
using TerraFX.Interop.DirectX;
using TerraFX.Interop.Windows;
namespace Ghost.Graphics.D3D12;
@@ -115,7 +114,7 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
private UnsafeQueue<ReleaseEntry> _releaseQueue;
private int _writeLock;
private readonly Lock _writeLock;
private ulong _cpuFrame;
private bool _disposed;
@@ -133,6 +132,7 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
#endif
_releaseQueue = new UnsafeQueue<ReleaseEntry>(32, AllocationHandle.Persistent);
_writeLock = new Lock();
}
~D3D12ResourceDatabase()
@@ -152,13 +152,10 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
return Handle<GPUResource>.Invalid;
}
var spinner = new SpinWait();
while (Interlocked.CompareExchange(ref _writeLock, 1, 0) != 0)
{
spinner.SpinOnce();
}
try
// It's fine here to use lock. System.Threading.Lock use LowLevelSpinWaiter internally before it escalates to a kernel lock, so it should be very cheap in the uncontended case.
// And adding resources is not a very frequent operation, so we can afford the potential overhead here for the sake of simplicity and correctness.
// We do not choose a concurrent collection here because we want maximum access speed for read operations.
lock (_writeLock)
{
var id = _resources.Add(new ResourceRecord(pResource, initialBarrierData, viewGroup, desc), out var generation);
var handle = new Handle<GPUResource>(id, generation);
@@ -173,10 +170,6 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
return handle;
}
finally
{
Interlocked.Exchange(ref _writeLock, 0);
}
}
internal Handle<GPUResource> AddAllocation(D3D12MA_Allocation* allocation, ResourceBarrierData initialBarrierData, ResourceViewGroup resourceDescriptor, ResourceDesc desc, string? name = null)
@@ -191,13 +184,7 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
return Handle<GPUResource>.Invalid;
}
var spinner = new SpinWait();
while (Interlocked.CompareExchange(ref _writeLock, 1, 0) != 0)
{
spinner.SpinOnce();
}
try
lock (_writeLock)
{
var id = _resources.Add(new ResourceRecord(allocation, initialBarrierData, resourceDescriptor, desc), out var generation);
var handle = new Handle<GPUResource>(id, generation);
@@ -217,22 +204,6 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
return handle;
}
finally
{
Interlocked.Exchange(ref _writeLock, 0);
}
}
public void EnterParallelRead()
{
Logger.DebugAssert(!_disposed);
Interlocked.Exchange(ref _writeLock, 1);
}
public void ExitParallelRead()
{
Logger.DebugAssert(!_disposed);
Interlocked.Exchange(ref _writeLock, 0);
}
public bool HasResource(Handle<GPUResource> handle)
@@ -416,30 +387,20 @@ internal unsafe class D3D12ResourceDatabase : IResourceDatabase
return Handle<GPUResource>.Invalid;
}
var spinner = new SpinWait();
while (Interlocked.CompareExchange(ref _writeLock, 1, 0) != 0)
var (srcRecord, error) = GetResourceRecord(src);
if (error.IsFailure)
{
spinner.SpinOnce();
return Handle<GPUResource>.Invalid;
}
try
lock (_writeLock)
{
var (srcRecord, error) = GetResourceRecord(src);
if (error.IsFailure)
{
return Handle<GPUResource>.Invalid;
}
var newRecord = srcRecord.Get();
newRecord.isShared = true;
var id = _resources.Add(newRecord, out var generation);
return new Handle<GPUResource>(id, generation);
}
finally
{
Interlocked.Exchange(ref _writeLock, 0);
}
}
public void* MapResource(Handle<GPUResource> handle, uint subResource, ResourceRange? readRange)