DummyViewport.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "UnrealClient.h"
 
class FDummyViewport : public FViewport
{
public:
    ENGINE_API FDummyViewport(FViewportClient* InViewportClient);
 
    ENGINE_API virtual ~FDummyViewport();
 
    //~ Begin FViewport Interface
    virtual void BeginRenderFrame(FRHICommandListImmediate& RHICmdList) override
    {
        check( IsInRenderingThread() );
        //SetRenderTarget(RHICmdList,  RenderTargetTextureRHI,  FTextureRHIRef() );
    };
 
    virtual void EndRenderFrame(FRHICommandListImmediate& RHICmdList, bool bPresent, bool bLockToVsync) override
    {
        check( IsInRenderingThread() );
    }
 
    void SetupHDR(EDisplayColorGamut InDisplayColorGamut, EDisplayOutputFormat InDisplayOutputFormat, bool bInSceneHDREnabled)
    {
        DisplayColorGamut = InDisplayColorGamut;
        DisplayOutputFormat = InDisplayOutputFormat;
        bSceneHDREnabled = bInSceneHDREnabled;
    }
 
    virtual void*   GetWindow() override { return 0; }
    virtual void    MoveWindow(int32 NewPosX, int32 NewPosY, int32 NewSizeX, int32 NewSizeY) override {}
    virtual void    Destroy() override {}
    virtual bool SetUserFocus(bool bFocus) override { return false; }
    virtual bool    KeyState(FKey Key) const override { return false; }
    virtual int32   GetMouseX() const override { return 0; }
    virtual int32   GetMouseY() const override { return 0; }
    virtual void    GetMousePos( FIntPoint& MousePosition, const bool bLocalPosition = true) override { MousePosition = FIntPoint(0, 0); }
    virtual void    SetMouse(int32 x, int32 y) override { }
    virtual void    ProcessInput( float DeltaTime ) override { }
    virtual FVector2D VirtualDesktopPixelToViewport(FIntPoint VirtualDesktopPointPx) const override { return FVector2D::ZeroVector; }
    virtual FIntPoint ViewportToVirtualDesktopPixel(FVector2D ViewportCoordinate) const override { return FIntPoint::ZeroValue; }
    virtual void InvalidateDisplay() override { }
    virtual void DeferInvalidateHitProxy() override { }
    virtual FViewportFrame* GetViewportFrame() override { return 0; }
    virtual FCanvas* GetDebugCanvas() override { return DebugCanvas; }
    ENGINE_API virtual EDisplayColorGamut GetDisplayColorGamut() const;
    ENGINE_API virtual EDisplayOutputFormat GetDisplayOutputFormat() const;
    ENGINE_API virtual bool GetSceneHDREnabled() const;
    //~ End FViewport Interface
 
    //~ Begin FRenderResource Interface
    ENGINE_API virtual void InitRHI(FRHICommandListBase& RHICmdList) override;
    virtual FString GetFriendlyName() const override { return FString(TEXT("FDummyViewport"));}
    //~ End FRenderResource Interface
private:
    FCanvas* DebugCanvas;
    EDisplayColorGamut DisplayColorGamut = EDisplayColorGamut::sRGB_D65;
    EDisplayOutputFormat DisplayOutputFormat = EDisplayOutputFormat::SDR_sRGB;
    bool bSceneHDREnabled = false;
};