PostBufferUpdate.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Misc/Attribute.h"
#include "Widgets/SWidget.h"
#include "Components/Widget.h"
#include "Rendering/SlateRendererTypes.h"
 
#include "PostBufferUpdate.generated.h"
 
class SPostBufferUpdate;
class USlatePostBufferProcessorUpdater;
class FSlatePostProcessorUpdaterProxy ;
class FSlateRHIPostBufferProcessorProxy;
 
USTRUCT()
struct FSlatePostBufferUpdateInfo
{
    GENERATED_BODY()
 
    
    UPROPERTY(EditAnywhere, Category = "Behavior", meta = (AllowPrivateAccess = "true"))
    ESlatePostRT BufferToUpdate = ESlatePostRT::None;
 
    UPROPERTY(EditAnywhere, Instanced, Category = "Behavior", meta = (AllowPrivateAccess = "true"))
    TObjectPtr<USlatePostBufferProcessorUpdater> PostParamUpdater = nullptr;
};
 
UCLASS(MinimalAPI)
class UPostBufferUpdate : public UWidget
{
    GENERATED_BODY()
 
public:
    UMG_API UPostBufferUpdate();
 
private:
 
    UE_DEPRECATED(5.7, "Now always true. The value of bUpdateOnlyPaintArea is ignored")
    UPROPERTY(BlueprintReadOnly, Category = "Behavior", meta = (AllowPrivateAccess = "true"))
    bool bUpdateOnlyPaintArea;
 
    UE_DEPRECATED(5.7, "Default post buffer updates are no longer performed under any circumstances")
    UPROPERTY(BlueprintReadOnly, Category = "Behavior", meta = (AllowPrivateAccess = "true"))
    bool bPerformDefaultPostBufferUpdate;
 
    UE_DEPRECATED(5.5, "BuffersToUpdate is deprecated. Please use UpdateBufferInfos. This array will be ignored if UpdateBufferInfos is used")
    UPROPERTY(EditAnywhere, Category = "Behavior", meta = (AllowPrivateAccess = "true"))
    TArray<ESlatePostRT> BuffersToUpdate;
 
    UPROPERTY(EditAnywhere, Category = "Behavior", meta = (AllowPrivateAccess = "true"))
    TArray<FSlatePostBufferUpdateInfo> UpdateBufferInfos;
 
public:
 
#if WITH_EDITOR
    bool GetUpdateOnlyPaintArea() const { return true; }
 
    UMG_API bool DoesUpdateSlatePostRT(ESlatePostRT SlateBufferBits) const ;
#endif
 
protected:
    //~ Begin UWidget Interface
    UMG_API virtual TSharedRef<SWidget> RebuildWidget() override;
    UMG_API virtual void SynchronizeProperties() override;
    UMG_API virtual void ReleaseSlateResources(bool bReleaseChildren) override;
    //~ End UWidget Interface
 
protected:
    TSharedPtr<SPostBufferUpdate> MyPostBufferUpdate;
};
 
UCLASS(MinimalAPI, Abstract, Blueprintable, EditInlineNew, CollapseCategories)
class USlatePostBufferProcessorUpdater : public UObject
{
    GENERATED_BODY()
 
public:
 
    UE_DEPRECATED(5.7, "Now always false. The value of bSkipBufferUpdate is ignored")
    UPROPERTY()
    bool bSkipBufferUpdate = false;
 
public:
    virtual TSharedPtr<FSlatePostProcessorUpdaterProxy> GetRenderThreadProxy() const
    {
        return nullptr;
    };
};