// This file is part of the FidelityFX Super Resolution 3.1 Unreal Engine Plugin.
//
// Copyright (c) 2023-2025 Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once

#include "Engine/Engine.h"
#include "RHIResources.h"

#include "FFXShared.h"

class FViewport;
class FRHIViewport;
typedef TRefCountPtr<FRHIViewport> FViewportRHIRef;
class IFFXSharedBackend;
enum class EFFXBackendAPI : uint8;

enum EFFXFrameInterpolationPresentMode
{
	EFFXFrameInterpolationPresentModeRHI,
	EFFXFrameInterpolationPresentModeNative
};

class IFFXFrameInterpolationCustomPresent : public FRHICustomPresent
{
public:
	virtual void InitViewport(FViewport* InViewport, FViewportRHIRef ViewportRHI) = 0;
	virtual void SetMode(EFFXFrameInterpolationPresentMode Mode) = 0;
	virtual void SetUseFFXSwapchain(bool const bEnabled) = 0;
};

class IFFXFrameInterpolation
{
public:
	virtual IFFXFrameInterpolationCustomPresent* CreateCustomPresent(IFFXSharedBackend* Backend, uint32_t Flags, FIntPoint RenderSize, FIntPoint DisplaySize, FfxSwapchain RawSwapChain, FfxCommandQueue Queue, FfxApiSurfaceFormat Format, EFFXBackendAPI Api) = 0;
	virtual bool GetAverageFrameTimes(float& AvgTimeMs, float& AvgFPS) = 0;
};