TemporalUpscaler.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "ScreenPass.h"
 
namespace UE::Renderer::Private
{
 
class ITemporalUpscaler : public ISceneViewFamilyExtention
{
public:
 
    class IHistory : public IRefCountedObject
    {
    public:
        virtual ~IHistory() {}
 
        virtual const TCHAR* GetDebugName() const = 0;
 
        virtual uint64 GetGPUSizeBytes() const = 0;
    };
 
    struct FInputs
    {
        FIntRect OutputViewRect;
 
        FVector2f TemporalJitterPixels;
 
        float PreExposure = 1.0f;
 
        FScreenPassTexture SceneColor;
 
        FScreenPassTexture SceneDepth;
 
        FScreenPassTexture SceneVelocity;
 
        FRDGTextureRef EyeAdaptationTexture = nullptr;
 
        TRefCountPtr<IHistory> PrevHistory;
    };
 
    struct FOutputs
    {
        FScreenPassTexture FullRes;
 
        TRefCountPtr<IHistory> NewHistory;
    };
 
    virtual ~ITemporalUpscaler() {};
 
    virtual const TCHAR* GetDebugName() const = 0;
 
    virtual FOutputs AddPasses(
        FRDGBuilder& GraphBuilder,
        const FSceneView& View,
        const FInputs& Inputs) const = 0;
 
 
    virtual float GetMinUpsampleResolutionFraction() const = 0;
    virtual float GetMaxUpsampleResolutionFraction() const = 0;
 
    virtual ITemporalUpscaler* Fork_GameThread(const class FSceneViewFamily& ViewFamily) const = 0;
};
 
} // namespace UE::Renderer::Private