ParameterCollection.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    ParameterCollection.h: 
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "Misc/Guid.h"
#include "RHI.h"
 
static const uint32 MaxNumParameterCollectionsPerMaterial = 2;
 
class FMaterialParameterCollectionInstanceResource
{
public:
    
    void GameThread_UpdateContents(const FGuid& InId, const TArray<FVector4f>& Data, const FName& InOwnerName, bool bRecreateUniformBuffer);
 
    void GameThread_Destroy();
 
    FGuid GetId() const 
    { 
        return Id; 
    }
 
    FName GetOwnerName() const
    {
        return OwnerName;
    }
 
    FRHIUniformBuffer* GetUniformBuffer() const
    {
        return UniformBuffer;
    }
 
    FMaterialParameterCollectionInstanceResource();
 
private:
    ~FMaterialParameterCollectionInstanceResource();
 
    FGuid Id;
 
    FName OwnerName;
 
    FUniformBufferRHIRef UniformBuffer;
 
    FUniformBufferLayoutRHIRef UniformBufferLayout;
 
    void UpdateContents(const FGuid& InId, const TArray<FVector4f>& Data, const FName& InOwnerName, bool bRecreateUniformBuffer);
};
 
// Default instance resources used when rendering a material using a parameter collection but there's no FScene present to get a FMaterialParameterCollectionInstanceResource
extern ENGINE_API TMultiMap<FGuid, FMaterialParameterCollectionInstanceResource*> GDefaultMaterialParameterCollectionInstances;