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Update render graph

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Misaki
2026-01-13 13:46:50 +09:00
parent 954e3756aa
commit 02df8d7732
11 changed files with 291 additions and 261 deletions
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162
Ghost.RenderGraph.Concept/RenderGraph.cs
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@@ -105,11 +105,32 @@ public sealed class RenderGraph
return _builder;
}
/// <summary>
/// Computes a _hasher of the render graph structure for caching.
/// Does NOT include pass names (they don't affect compilation).
/// Uses XxHash3 with SIMD optimizations for fast hashing.
/// </summary>
private unsafe int ComputeTextureHash(byte* pData, int offset, Identifier<RGTexture> texture)
{
if (texture.IsInvalid)
{
return offset;
}
var resource = _resources.GetResource(texture.AsResource());
// In real implementation, we typically need to handle imported resources differently.
*(pData + offset) = resource.isImported ? (byte)1 : (byte)0;
offset += sizeof(byte);
*(TextureFormat*)(pData + offset) = resource.descriptor.format;
offset += sizeof(TextureFormat);
*(int*)(pData + offset) = resource.descriptor.width;
offset += sizeof(int);
*(int*)(pData + offset) = resource.descriptor.height;
offset += sizeof(int);
return offset;
}
private unsafe ulong ComputeGraphHash()
{
using var scope = AllocationManager.CreateStackScope();
@@ -135,15 +156,14 @@ public sealed class RenderGraph
*(bool*)(pData + offset) = pass.asyncCompute;
offset += sizeof(bool);
*(TextureAccess*)(pData + offset) = pass.depthAccess;
offset += sizeof(TextureAccess);
// Hash depth attachment
offset = ComputeTextureHash(pData, offset, pass.depthAccess.id);
*(int*)(pData + offset) = pass.maxColorIndex;
offset += sizeof(int);
for (var j = 0; j <= pass.maxColorIndex; j++)
{
*(TextureAccess*)(pData + offset) = pass.colorAccess[j];
offset += sizeof(TextureAccess);
offset = ComputeTextureHash(pData, offset, pass.colorAccess[j].id);
}
*(int*)(pData + offset) = pass.resourceReads.Count;
@@ -171,23 +191,23 @@ public sealed class RenderGraph
}
}
// Hash resource descriptors
for (var i = 0; i < _resources.TextureResourceCount; i++)
{
var resource = _resources.GetTextureResourceByIndex(i);
//// Hash resource descriptors
//for (var i = 0; i < _resources.TextureResourceCount; i++)
//{
// var resource = _resources.GetTextureResourceByIndex(i);
*(int*)(pData + offset) = resource.Descriptor.Width;
offset += sizeof(int);
// *(int*)(pData + offset) = resource.descriptor.width;
// offset += sizeof(int);
*(int*)(pData + offset) = resource.Descriptor.Height;
offset += sizeof(int);
// *(int*)(pData + offset) = resource.descriptor.height;
// offset += sizeof(int);
*(TextureFormat*)(pData + offset) = resource.Descriptor.Format;
offset += sizeof(TextureFormat);
// *(TextureFormat*)(pData + offset) = resource.descriptor.format;
// offset += sizeof(TextureFormat);
*(bool*)(pData + offset) = resource.IsImported;
offset += sizeof(bool);
}
// *(bool*)(pData + offset) = resource.isImported;
// offset += sizeof(bool);
//}
var span = new Span<byte>(pData, offset);
return XxHash64.HashToUInt64(span);
@@ -208,7 +228,7 @@ public sealed class RenderGraph
#endif
// Step 0: Check cache
var graphHash = ComputeGraphHash(); // 1321433047288519964
var graphHash = ComputeGraphHash(); // 17020363347016000737
#if DEBUG
var hashTime = sw.Elapsed.TotalMicroseconds;
@@ -245,7 +265,7 @@ public sealed class RenderGraph
{
var writeHandle = pass.resourceWrites[j];
var resource = _resources.GetResource(writeHandle);
if (resource.IsImported)
if (resource.isImported)
{
pass.hasSideEffects = true;
break;
@@ -299,31 +319,31 @@ public sealed class RenderGraph
{
// Restore compiled pass list
_compiledPasses.Clear();
for (var i = 0; i < cached.CompiledPassIndices.Count; i++)
for (var i = 0; i < cached.compiledPassIndices.Count; i++)
{
var passIndex = cached.CompiledPassIndices[i];
var passIndex = cached.compiledPassIndices[i];
_compiledPasses.Add(_passes[passIndex]);
}
// Restore culling flags
for (var i = 0; i < _passes.Count && i < cached.PassCulledFlags.Count; i++)
for (var i = 0; i < _passes.Count && i < cached.passCulledFlags.Count; i++)
{
_passes[i].culled = cached.PassCulledFlags[i];
_passes[i].culled = cached.passCulledFlags[i];
}
// Restore aliasing mappings (need to update ResourceAliasingManager)
_aliasingManager.RestoreFromCache(cached.LogicalToPhysical, cached.PhysicalResources);
_aliasingManager.RestoreFromCache(cached.logicalToPhysical, cached.physicalResources);
// Restore barriers (deep copy to avoid shared references)
_barriers.Clear();
for (var i = 0; i < cached.Barriers.Count; i++)
for (var i = 0; i < cached.barriers.Count; i++)
{
_barriers.Add(cached.Barriers[i]);
_barriers.Add(cached.barriers[i]);
}
// Restore resource states
_resourceStates.Clear();
foreach (var kvp in cached.ResourceStates)
foreach (var kvp in cached.resourceStates)
{
_resourceStates[kvp.Key] = kvp.Value;
}
@@ -339,54 +359,75 @@ public sealed class RenderGraph
// Store compiled pass indices
for (var i = 0; i < _compiledPasses.Count; i++)
{
cacheData.CompiledPassIndices.Add(_compiledPasses[i].index);
cacheData.compiledPassIndices.Add(_compiledPasses[i].index);
}
// Store culling flags for all passes
for (var i = 0; i < _passes.Count; i++)
{
cacheData.PassCulledFlags.Add(_passes[i].culled);
cacheData.passCulledFlags.Add(_passes[i].culled);
}
// Store aliasing mappings
_aliasingManager.StoreToCache(cacheData.LogicalToPhysical, cacheData.PhysicalResources);
_aliasingManager.StoreToCache(cacheData.logicalToPhysical, cacheData.physicalResources);
// Store barriers
for (var i = 0; i < _barriers.Count; i++)
{
cacheData.Barriers.Add(_barriers[i]);
cacheData.barriers.Add(_barriers[i]);
}
// Store resource states
foreach (var kvp in _resourceStates)
{
cacheData.ResourceStates[kvp.Key] = kvp.Value;
cacheData.resourceStates[kvp.Key] = kvp.Value;
}
_compilationCache.Store(graphHash, cacheData);
}
/// <summary>
/// Recursively un-cull passes that a given pass depends on.
/// </summary>
private void UnculProducer(Identifier<RGResource> resource)
{
var res = _resources.GetResource(resource);
if (res.producerPass >= 0)
{
var producer = _passes[res.producerPass];
if (producer.culled)
{
producer.culled = false;
UnculDependencies(producer);
}
}
}
private void UnculDependencies(RenderGraphPassBase pass)
{
// Un-cull all producers of textures we read
// Un-cull producers of read resources
for (var i = 0; i < pass.resourceReads.Count; i++)
{
var readHandle = pass.resourceReads[i];
var resource = _resources.GetResource(readHandle);
UnculProducer(pass.resourceReads[i]);
}
if (resource.ProducerPass >= 0)
// Un-cull producers of color attachments
for (var i = 0; i <= pass.maxColorIndex; i++)
{
if (pass.colorAccess[i].id.IsValid)
{
var producer = _passes[resource.ProducerPass];
if (producer.culled)
{
producer.culled = false;
UnculDependencies(producer);
}
UnculProducer(pass.colorAccess[i].id.AsResource());
}
}
// Un-cull producer of depth attachment
if (pass.depthAccess.id.IsValid)
{
UnculProducer(pass.depthAccess.id.AsResource());
}
// Un-cull producers of UAV resources (if not already in reads/writes)
for (var i = 0; i < pass.randomAccess.Count; i++)
{
UnculProducer(pass.randomAccess[i]);
}
}
/// <summary>
@@ -431,11 +472,11 @@ public sealed class RenderGraph
var resource = _resources.GetResource(id);
// Skip imported resources
if (resource.IsImported)
if (resource.isImported)
continue;
// Check if this is the first use of this logical resource
if (resource.FirstUsePass == pass.index)
if (resource.firstUsePass == pass.index)
{
// Rent the physical resource
var physicalIndex = _aliasingManager.GetPhysicalResourceIndex(id.Value);
@@ -445,22 +486,22 @@ public sealed class RenderGraph
// If this physical resource has multiple aliased resources,
// we need an aliasing barrier when switching between them
if (physical != null && physical.AliasedLogicalResources.Count > 1)
if (physical != null && physical.aliasedLogicalResources.Count > 1)
{
// Find the resource that used this physical memory most recently before this pass
Identifier<RGResource> resourceBefore = default;
var mostRecentLastUse = -1;
foreach (var otherLogicalIndex in physical.AliasedLogicalResources)
foreach (var otherLogicalIndex in physical.aliasedLogicalResources)
{
if (otherLogicalIndex != id.Value)
{
var otherResource = _resources.GetTextureResourceByIndex(otherLogicalIndex);
// Check if this resource finished before our resource starts
if (otherResource.LastUsePass < pass.index &&
otherResource.LastUsePass > mostRecentLastUse)
if (otherResource.lastUsePass < pass.index &&
otherResource.lastUsePass > mostRecentLastUse)
{
mostRecentLastUse = otherResource.LastUsePass;
mostRecentLastUse = otherResource.lastUsePass;
resourceBefore = otherLogicalIndex;
}
}
@@ -596,6 +637,13 @@ public sealed class RenderGraph
barrier.StateAfter
);
}
else if (barrier.Type == BarrierType.Aliasing)
{
_commandBuffer.AliasBarrier(
barrier.ResourceBefore,
barrier.ResourceAfter
);
}
#endif
// In a real implementation, you would execute the barrier here:
// ExecuteBarrier(_barriers[barrierIndex]);