MaterialExpressionFresnel.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "MaterialExpressionIO.h"
#include "Materials/MaterialExpression.h"
#include "MaterialExpressionFresnel.generated.h"
 
UCLASS(MinimalAPI, collapsecategories, hidecategories=Object)
class UMaterialExpressionFresnel : public UMaterialExpression
{
    GENERATED_BODY()
 
public:
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to 'Exponent' if not specified"))
    FExpressionInput ExponentIn;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionFresnel, meta=(OverridingInputProperty = "ExponentIn"))
    float Exponent = 5.0f;
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to 'BaseReflectFraction' if not specified"))
    FExpressionInput BaseReflectFractionIn;
 
    UPROPERTY(EditAnywhere, Category=MaterialExpressionFresnel, meta=(OverridingInputProperty = "BaseReflectFractionIn"))
    float BaseReflectFraction = 0.04f;
 
    UPROPERTY(meta = (RequiredInput = "false", ToolTip = "Defaults to Pixel World Normal if not specified"))
    FExpressionInput Normal;
 
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual void Build(MIR::FEmitter& Emitter) override;
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override
    {
        OutCaptions.Add(FString(TEXT("Fresnel")));
    }
#endif
    //~ End UMaterialExpression Interface
};