WebBrowserTextureResource.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreTypes.h"
#include "Containers/Queue.h"
#include "Logging/LogMacros.h"
#include "Math/Color.h"
#include "Misc/Guid.h"
#include "Misc/Timespan.h"
#include "Templates/RefCounting.h"
#include "Templates/SharedPointer.h"
#include "TextureResource.h"
#include "UnrealClient.h"
#include "WebBrowserTextureSample.h"
 
class UWebBrowserTexture;
 
WEBBROWSERTEXTURE_API DECLARE_LOG_CATEGORY_EXTERN(LogWebBrowserTexture, Log, All);
 
class FWebBrowserTextureResource
    : public FRenderTarget
    , public FTextureResource
{
public:
 
    FWebBrowserTextureResource(UWebBrowserTexture& InOwner, FIntPoint& InOwnerDim, SIZE_T& InOwnerSize);
 
    virtual ~FWebBrowserTextureResource() { }
 
public:
 
    struct FRenderParams
    {
        FLinearColor ClearColor;
 
        FGuid PlayerGuid;
 
        TWeakPtr<FWebBrowserTextureSampleQueue, ESPMode::ThreadSafe> SampleSource;
 
    };
 
    void Render(FRHICommandList& RHICmdList, const FRenderParams& Params);
 
public:
 
    //~ FRenderTarget interface
 
    virtual FIntPoint GetSizeXY() const override;
 
public:
 
    //~ FTextureResource interface
 
    virtual FString GetFriendlyName() const override;
    virtual uint32 GetSizeX() const override;
    virtual uint32 GetSizeY() const override;
    virtual void InitRHI(FRHICommandListBase& RHICmdList) override;
    virtual void ReleaseRHI() override;
 
protected:
 
    void ClearTexture(FRHICommandList& RHICmdList, const FLinearColor& ClearColor);
 
    void CopySample(FRHICommandListBase& RHICmdList, const TSharedPtr<FWebBrowserTextureSample, ESPMode::ThreadSafe>& Sample, const FLinearColor& ClearColor);
 
    void UpdateResourceSize();
 
    void UpdateTextureReference(FRHICommandListBase& RHICmdList, FRHITexture* NewTexture);
 
private:
 
    bool Cleared;
 
    FLinearColor CurrentClearColor;
 
    TRefCountPtr<FRHITexture> InputTarget;
 
    TRefCountPtr<FRHITexture> OutputTarget;
 
    UWebBrowserTexture& Owner;
 
    FIntPoint& OwnerDim;
 
    SIZE_T& OwnerSize;
};