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Optimize Animated Models bones updating with a batches memory pass and manual resource transitions batch

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#3917 #3827
This commit is contained in:
Wojtek Figat
2026-02-09 23:03:25 +01:00
parent 0f6c1aea62
commit 55f73b6cf7
4 changed files with 125 additions and 10 deletions
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83
Source/Engine/Level/Actors/AnimatedModel.cpp
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@@ -14,15 +14,84 @@
#include "Engine/Content/Deprecated.h"
#include "Engine/Graphics/GPUContext.h"
#include "Engine/Graphics/GPUDevice.h"
#include "Engine/Graphics/GPUPass.h"
#include "Engine/Graphics/RenderTask.h"
#include "Engine/Graphics/Models/MeshAccessor.h"
#include "Engine/Graphics/Models/MeshDeformation.h"
#include "Engine/Renderer/RenderList.h"
#include "Engine/Level/Scene/Scene.h"
#include "Engine/Level/SceneObjectsFactory.h"
#include "Engine/Profiler/ProfilerMemory.h"
#include "Engine/Renderer/RenderList.h"
#include "Engine/Profiler/Profiler.h"
#include "Engine/Serialization/Serialization.h"
// Implements efficient skinning data update within a shared GPUMemoryPass with manual resource transitions batched for all animated models.
class AnimatedModelRenderListExtension : public RenderList::IExtension
{
public:
struct Item
{
GPUBuffer* BoneMatrices;
void* Data;
int32 Size;
};
RenderListBuffer<Item> Items;
void PreDraw(GPUContext* context, RenderContextBatch& renderContextBatch) override
{
Items.Clear();
}
void PostDraw(GPUContext* context, RenderContextBatch& renderContextBatch) override
{
const int32 count = Items.Count();
if (count == 0)
return;
PROFILE_GPU_CPU_NAMED("Update Bones");
GPUMemoryPass pass(context);
Item* items = Items.Get();
// Special case for D3D11 backend that doesn't need transitions
if (context->GetDevice()->GetRendererType() <= RendererType::DirectX11)
{
for (int32 i = 0; i < count; i++)
{
Item& item = items[i];
context->UpdateBuffer(item.BoneMatrices, item.Data, item.Size);
}
}
else
{
// Batch resource barriers for buffer update
for (int32 i = 0; i < count; i++)
pass.Transition(items[i].BoneMatrices, GPUResourceAccess::CopyWrite);
// Update all buffers within Memory Pass (no barriers between)
for (int32 i = 0; i < count; i++)
{
Item& item = items[i];
context->UpdateBuffer(item.BoneMatrices, item.Data, item.Size);
}
// Batch resource barriers for reading in Vertex Shader
for (int32 i = 0; i < count; i++)
pass.Transition(items[i].BoneMatrices, GPUResourceAccess::ShaderReadGraphics);
}
#if COMPILE_WITH_PROFILER
// Insert amount of kilobytes of data updated into profiler trace
uint32 dataSize = 0;
for (int32 i = 0; i < count; i++)
dataSize += items[i].Size;
ZoneValue(dataSize / 1024);
#endif
Items.Clear();
}
};
AnimatedModelRenderListExtension RenderListExtension;
AnimatedModel::AnimatedModel(const SpawnParams& params)
: ModelInstanceActor(params)
, _actualMode(AnimationUpdateMode::Never)
@@ -1013,10 +1082,7 @@ void AnimatedModel::Draw(RenderContext& renderContext)
// Flush skinning data with GPU
if (_skinningData.IsDirty())
{
renderContext.List->AddDelayedDraw([this](GPUContext* context, RenderContextBatch& renderContextBatch, int32 renderContextIndex)
{
context->UpdateBuffer(_skinningData.BoneMatrices, _skinningData.Data.Get(), _skinningData.Data.Count());
});
RenderListExtension.Items.Add({ _skinningData.BoneMatrices, _skinningData.Data.Get(), _skinningData.Data.Count() });
_skinningData.OnFlush();
}
@@ -1059,10 +1125,7 @@ void AnimatedModel::Draw(RenderContextBatch& renderContextBatch)
// Flush skinning data with GPU
if (_skinningData.IsDirty())
{
renderContext.List->AddDelayedDraw([this](GPUContext* context, RenderContextBatch& renderContextBatch, int32 renderContextIndex)
{
context->UpdateBuffer(_skinningData.BoneMatrices, _skinningData.Data.Get(), _skinningData.Data.Count());
});
RenderListExtension.Items.Add({ _skinningData.BoneMatrices, _skinningData.Data.Get(), _skinningData.Data.Count() });
_skinningData.OnFlush();
}