MetalTransitionData.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*==============================================================================
    MetalTransitionData.h: Metal RHI Resource Transition Definitions.
==============================================================================*/
 
#pragma once
 
#include "RHITransition.h"
#include "MetalFence.h"
 
//------------------------------------------------------------------------------
 
#pragma mark - Metal RHI Resource Transition Info Array Type Definition -
 
 
typedef TArray<FRHITransitionInfo, TInlineAllocator<4> > FMetalTransitionInfoArray;
 
 
//------------------------------------------------------------------------------
 
#pragma mark - Metal RHI Resource Transition Data Class -
 
class FMetalCommandEncoder;
class FMetalTransitionData
{
public:
    explicit FMetalTransitionData(ERHIPipeline                         InSrcPipelines,
                                  ERHIPipeline                         InDstPipelines,
                                  ERHITransitionCreateFlags            InCreateFlags,
                                  TArrayView<const FRHITransitionInfo> InInfos);
 
    // The default destructor is sufficient.
    ~FMetalTransitionData() = default;
 
    // Disallow default, copy and move constructors.
    FMetalTransitionData()                             = delete;
    FMetalTransitionData(const FMetalTransitionData&)  = delete;
    FMetalTransitionData(const FMetalTransitionData&&) = delete;
 
    // Begin resource transitions.
    void BeginResourceTransitions() const;
 
    // End resource transitions.
    void EndResourceTransitions(FMetalCommandEncoder& CurrentEncoder, bool& UAVBarrier) const;
 
private:
    ERHIPipeline              SrcPipelines   = ERHIPipeline::Num;
    ERHIPipeline              DstPipelines   = ERHIPipeline::Num;
    ERHITransitionCreateFlags CreateFlags    = ERHITransitionCreateFlags::None;
    bool                      bCrossPipeline = false;
    FMetalTransitionInfoArray Infos          = {};
    TRefCountPtr<FMetalFence> Fence          = nullptr;
};