DynamicResolutionState.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    StereoRendering.h: Abstract stereoscopic rendering interface
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "Engine/EngineTypes.h"
#include "DynamicRenderScaling.h"
#include "TemporalUpscaler.h"
 
 
extern ENGINE_API DynamicRenderScaling::FBudget GDynamicPrimaryResolutionFraction;
 
 
enum class EDynamicResolutionStateEvent : uint8
{
    // Fired at the very begining of the frame.
    BeginFrame,
 
    // Fired at the very end of the frame.
    EndFrame
};
 
 
class IDynamicResolutionState
{
public:
    virtual ~IDynamicResolutionState() { };
 
    virtual void ResetHistory() = 0;
 
    virtual bool IsSupported() const = 0;
 
    virtual void SetupMainViewFamily(class FSceneViewFamily& ViewFamily) = 0;
 
    virtual void SetTemporalUpscaler(const UE::Renderer::Private::ITemporalUpscaler* InTemporalUpscaler) = 0;
 
protected:
 
    virtual DynamicRenderScaling::TMap<float> GetResolutionFractionsApproximation() const = 0;
 
    virtual DynamicRenderScaling::TMap<float> GetResolutionFractionsUpperBound() const = 0;
 
    virtual DynamicRenderScaling::TMap<float> GetResolutionFractionsUpperBoundBudgetValue() const
    {
        return GetResolutionFractionsUpperBound();
    }
 
    virtual void SetEnabled(bool bEnable) = 0;
 
    virtual bool IsEnabled() const = 0;
 
    virtual void ProcessEvent(EDynamicResolutionStateEvent Event) = 0;
 
    // Only GEngine can actually enable/disable and emit dynamic resolution event, to force consistency across all implementations.
    friend class UEngine;
};