MaterialExpressionMaterialSample.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Materials/MaterialExpression.h"
 
#include "MaterialExpressionMaterialSample.generated.h"
 
#define ENABLE_MATERIAL_SAMPLE_PROTOTYPE 0
 
class FMaterialCompiler;
 
UCLASS(MinimalAPI)
class UMaterialExpressionMaterialSample: public UMaterialExpression
{
    GENERATED_UCLASS_BODY()
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionMaterialSample)
    TObjectPtr<class UMaterialInterface> MaterialReference;
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR 
#if ENABLE_MATERIAL_SAMPLE_PROTOTYPE
    ENGINE_API virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    ENGINE_API virtual int32 CompilePreview(FMaterialCompiler* Compiler, int32 OutputIndex) override;
    ENGINE_API virtual EMaterialValueType GetOutputValueType(int32 OutputIndex) override;
    virtual bool IsResultSubstrateMaterial(int32 OutputIndex) override;
    virtual FSubstrateOperator * SubstrateGenerateMaterialTopologyTree(class FMaterialCompiler* Compiler, class UMaterialExpression* Parent, int32 OutputIndex) override; 
 
    int32 DynamicCompile(FMaterialCompiler* Compiler, int32 OutputIndex, bool bCompilePreview);
#endif
    ENGINE_API virtual void GetCaption(TArray<FString>& OutCaptions) const override;
#endif
 
    //~ End UMaterialExpression Interface
};