DisplayClusterDeviceBase.cpp

// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

#include "DisplayClusterDeviceBase.h"

#include "Cluster/IPDisplayClusterClusterManager.h"
#include "Cluster/Controller/IPDisplayClusterNodeController.h"
#include "Config/IPDisplayClusterConfigManager.h"
#include "Game/IPDisplayClusterGameManager.h"

#include "DisplayClusterScreenComponent.h"

#include "RHIStaticStates.h"
#include "Slate/SceneViewport.h"

#include "Misc/DisplayClusterHelpers.h"
#include "Misc/DisplayClusterLog.h"

#include "DisplayClusterGlobals.h"
#include "IPDisplayCluster.h"

#include <utility>


FDisplayClusterDeviceBase::FDisplayClusterDeviceBase() :
	FRHICustomPresent()
{
	UE_LOG(LogDisplayClusterRender, VeryVerbose, TEXT(".ctor FDisplayClusterDeviceBase"));
}

FDisplayClusterDeviceBase::~FDisplayClusterDeviceBase()
{
	UE_LOG(LogDisplayClusterRender, VeryVerbose, TEXT(".dtor FDisplayClusterDeviceBase"));
}

bool FDisplayClusterDeviceBase::Initialize()
{
	if (GDisplayCluster->GetOperationMode() == EDisplayClusterOperationMode::Disabled)
	{
		return false;
	}

	UE_LOG(LogDisplayClusterRender, Log, TEXT("Use swap interval: %d"), SwapInterval);

	return true;
}

void FDisplayClusterDeviceBase::WaitForBufferSwapSync(int32& InOutSyncInterval)
{
	// Perform SW synchronization
	UE_LOG(LogDisplayClusterRender, Verbose, TEXT("Waiting for swap sync..."));

	// Policies below are available for any render device type
	switch (SwapSyncPolicy)
	{
		case EDisplayClusterSwapSyncPolicy::None:
		{
			exec_BarrierWait();
			InOutSyncInterval = 0;
			break;
		}

		default:
		{
			UE_LOG(LogDisplayClusterRender, Warning, TEXT("Swap sync policy drop: %d"), (int)SwapSyncPolicy);
			InOutSyncInterval = 0;
			break;
		}
	}
}