SlateMaterialResource.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Textures/SlateShaderResource.h"
#include "Materials/MaterialInterface.h"
 
class FMaterialRenderProxy;
 
class FSlateMaterialResource : public FSlateShaderResource
{
public:
    FSlateMaterialResource(const UMaterialInterface& InMaterialResource, const FVector2f InImageSize, FSlateShaderResource* InTextureMask = nullptr );
    ~FSlateMaterialResource();
 
    //~ Begin FSlateShaderResource Interface.
    virtual uint32 GetWidth() const override { return Width; }
    virtual uint32 GetHeight() const override { return Height; }
    virtual ESlateShaderResource::Type GetType() const override { return ESlateShaderResource::Material; }
    virtual ESlatePostRT GetUsedSlatePostBuffers() const override;
    virtual bool RequiresVirtualTextureFeedback() const override;
    virtual bool IsResourceValid() const override;
    //~ End FSlateShaderResource Interface.
 
    void UpdateMaterial(const UMaterialInterface& InMaterialResource, const FVector2f InImageSize, FSlateShaderResource* InTextureMask );
    void ResetMaterial();
 
    FMaterialRenderProxy* GetRenderProxy() const { return MaterialProxy; }
 
    const UMaterialInterface* GetMaterialObject() const
    {
        return MaterialObject;
    }
 
    FSlateShaderResourceProxy* GetResourceProxy() const { return SlateProxy; }
 
    FSlateShaderResource* GetTextureMaskResource() const { return TextureMaskResource; }
 
#if SLATE_CHECK_UOBJECT_RENDER_RESOURCES
    virtual void CheckForStaleResources() const override;
#endif
 
private:
    const class UMaterialInterface* MaterialObject;
    class FMaterialRenderProxy* MaterialProxy;
 
#if SLATE_CHECK_UOBJECT_RENDER_RESOURCES
    // Used to guard against crashes when the material object is deleted.  This is expensive so we do not do it in shipping
    TWeakObjectPtr<const UMaterialInterface> MaterialObjectWeakPtr;
    FName DebugName;
#endif
 
    FSlateShaderResourceProxy* SlateProxy;
 
    FSlateShaderResource* TextureMaskResource;
    uint32 Width;
    uint32 Height;
 
    ESlatePostRT CachedSlatePostBuffers;
 
    bool CachedUsesVirtualTextures;
 
private:
#if SLATE_CHECK_UOBJECT_RENDER_RESOURCES
    void UpdateMaterialName();
#endif
};