63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "Data/RawBuffer.h"
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#include "DeviceBuffer.h"
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#include <memory>
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#include <vector>
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#define UE_API TEXTUREGRAPHENGINE_API
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class Blob;
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class DeviceNativeTask;
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typedef std::shared_ptr<DeviceNativeTask> DeviceNativeTaskPtr;
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typedef std::weak_ptr<DeviceNativeTask> DeviceNativeTaskPtrW;
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struct JobResult;
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typedef std::shared_ptr<JobResult> JobResultPtr;
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typedef cti::continuable<JobResultPtr> AsyncJobResultPtr;
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//////////////////////////////////////////////////////////////////////////
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class DeviceObserverSource
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{
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public:
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struct HashNDesc {
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uint64 Raw = 0;
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HashType First = 0;
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BufferDescriptor Second;
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};
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using HashNDescArray = std::vector<HashNDesc>;
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using HashArray = std::vector<HashType>;
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UE_API void AddBuffer(const DeviceBuffer* Buffer, HashType Hash, const BufferDescriptor& Desc);
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UE_API void RemoveBuffer(const DeviceBuffer* buffer, HashType hash, HashType prevHash);
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protected:
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/// Protected interface of emitters called by the scheduler to notify the observers
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friend class Device;
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FCriticalSection ObserverLock;
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HashNDescArray AddedBufferStack;
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HashArray RemovedBufferStack;
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uint32 Version = 1;
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/// Trigger the broadcast of the changes, this call is issued from the Device::Update function
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UE_API void Broadcast();
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/// The customisable handler method triggered from Broadcast if any buffers were added or removed
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virtual void DeviceBuffersUpdated(HashNDescArray&& AddedBuffers, HashArray&& RemovedBuffers) {}
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public:
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DeviceObserverSource() = default;
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virtual ~DeviceObserverSource() {}
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uint32 GetVersion() const { return Version; } /// THe version of the current state of the Device Cache. Incremented when Broadcast trigger
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};
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typedef std::shared_ptr<DeviceObserverSource> DeviceObserverSourcePtr;
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#undef UE_API
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