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> Unreal Engine API Reference > Runtime > Engine > Materials > UMaterial > UMaterial::RecursiveUpdateRealtimePreview

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UMaterial::RecursiveUpdateRealtimePreview

Recursively update the bRealtimePreview for each expression based on whether it is connected to something that is time-varying.

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References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Materials/Material.h
Include	#include "Materials/Material.h"
Source	/Engine/Source/Runtime/Engine/Private/Materials/Material.cpp

Syntax

void RecursiveUpdateRealtimePreview
(
UMaterialExpression * InExpression,
TArray< UMaterialExpression * > & InOutExpressionsToProcess
)

Remarks

Recursively update the bRealtimePreview for each expression based on whether it is connected to something that is time-varying. This is determined based on the result of UMaterialExpression::NeedsRealtimePreview();

Parameters

Parameter	Description
InExpression	The expression to start at.
InOutExpressionsToProcess	Array of expressions we still need to process.

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