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> Unreal Engine API Reference > Runtime > Engine > Materials > UMaterialExpressionPrecomputedAOMask

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UMaterialExpressionPrecomputedAOMask

A material expression that allows access to the precomputed AO mask generated when bGenerateAmbientOcclusionMaterialMask is enabled in Lightmass World settings.

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Inheritance Hierarchy

UObjectBase

UObjectBaseUtility

UObject

UMaterialExpression

UMaterialExpressionPrecomputedAOMask

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionPrecomputedAOMask.h
Include	#include "Materials/MaterialExpressionPrecomputedAOMask.h"

Syntax

class UMaterialExpressionPrecomputedAOMask : public UMaterialExpression

Remarks

A material expression that allows access to the precomputed AO mask generated when bGenerateAmbientOcclusionMaterialMask is enabled in Lightmass World settings.

Constructors

	Name	Description
	UMaterialExpressionPrecomputedAOMask ( const FObjectInitializer& ObjectIn... )

Overridden from UMaterialExpression

		Name	Description
	int32	Compile ( FMaterialCompiler* Compiler, int32 OutputIndex )	Create the new shader code chunk needed for the Abs expression
	void	GetCaption ( TArray< FString >& OutCaptions )	Returns the text to display on the material expression (in the material editor).

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