MaterialExpressionSobol.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "UObject/ObjectMacros.h"
#include "Materials/MaterialExpression.h"
#include "MaterialExpressionSobol.generated.h"
 
UCLASS(MinimalAPI)
class UMaterialExpressionSobol : public UMaterialExpression
{
    GENERATED_BODY()
 
public:
 
    UPROPERTY()
    FExpressionInput Cell;
 
    UPROPERTY(meta = (
        RequiredInput = "false", 
        Tooltip="Sobol point number. Use Const Index if not connected."))
    FExpressionInput Index;
 
    UPROPERTY(meta = (
        RequiredInput = "false",
        Tooltip="2D Seed for sequence randomization (0,0)-(1,1). Use Const Seed if not connected."))
    FExpressionInput Seed;
 
    UPROPERTY(EditAnywhere, Category = MaterialExpressionSobol, meta = (
        OverridingInputProperty = "Index", 
        Tooltip="Sobol point number. Only used if Index is not connected."))
    uint32 ConstIndex = 0;
    
    UPROPERTY(EditAnywhere, Category = MaterialExpressionSobol, meta = (
        OverridingInputProperty = "Seed",
        Tooltip="2D Seed for sequence randomization. Only used if Seed is not connected."))
    FVector2D ConstSeed = FVector2D(0.f, 0.f);
 
    //~ Begin UMaterialExpression Interface
#if WITH_EDITOR
    virtual int32 Compile(class FMaterialCompiler* Compiler, int32 OutputIndex) override;
    virtual void GetCaption(TArray<FString>& OutCaptions) const override;
#endif
    //~ End UMaterialExpression Interface
};