void FD3D12BuddyAllocator::Initialize()
{
FD3D12Device* Device = GetParentDevice();
FD3D12Adapter* Adapter = Device->GetParentAdapter();
if (AllocationStrategy == eBuddyAllocationStrategy::kPlacedResourceStrategy)
{
D3D12_HEAP_PROPERTIES HeapProps = CD3DX12_HEAP_PROPERTIES(HeapType);
HeapProps.CreationNodeMask = GetNodeMask();
HeapProps.VisibleNodeMask = GetVisibilityMask();
D3D12_HEAP_DESC Desc = {};
Desc.SizeInBytes = MaxBlockSize;
Desc.Properties = HeapProps;
Desc.Alignment = 0;
Desc.Flags = HeapFlags;
ID3D12Heap* Heap = nullptr;
VERIFYD3D12RESULT(Adapter->GetD3DDevice()->CreateHeap(&Desc, IID_PPV_ARGS(&Heap)));
SetName(Heap, L"Placed Resource Allocator Backing Heap");
BackingHeap = new FD3D12Heap(GetParentDevice(), GetVisibilityMask());
BackingHeap->SetHeap(Heap);
if (IsCPUWritable(HeapType) == false)
{
BackingHeap->BeginTrackingResidency(Desc.SizeInBytes);
}
}
else
{
VERIFYD3D12RESULT(Adapter->CreateBuffer(HeapType, GetNodeMask(), GetVisibilityMask(), MaxBlockSize, BackingResource.GetInitReference(), ResourceFlags));
SetName(BackingResource, L"Resource Allocator Underlying Buffer");
if (IsCPUWritable(HeapType))
{
BackingResource->Map();
}
}
}
inline FD3D12UnorderedAccessView* CreateUAV(D3D12_UNORDERED_ACCESS_VIEW_DESC& Desc, ResourceType* Resource, bool bNeedsCounterResource)
{
if (Resource == nullptr)
{
return nullptr;
}
FD3D12Adapter* Adapter = Resource->GetParentDevice()->GetParentAdapter();
return Adapter->CreateLinkedViews<ResourceType, FD3D12UnorderedAccessView>(Resource, [bNeedsCounterResource, &Desc](ResourceType* Resource)
{
FD3D12Device* Device = Resource->GetParentDevice();
FD3D12Resource* CounterResource = nullptr;
if (bNeedsCounterResource)
{
const GPUNodeMask Node = Device->GetNodeMask();
Device->GetParentAdapter()->CreateBuffer(D3D12_HEAP_TYPE_DEFAULT, Node, Node, 4, &CounterResource, D3D12_RESOURCE_FLAG_ALLOW_UNORDERED_ACCESS);
}
return new FD3D12UnorderedAccessView(Device, &Desc, &Resource->ResourceLocation, CounterResource);
});
}