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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/UPrimitiveComponent
Description
Invalidates Lumen surface cache and forces it to be refreshed. Useful to make material updates more responsive.
| Name | InvalidateLumenSurfaceCache |
| Type | function |
| Header File | /Engine/Source/Runtime/Engine/Classes/Components/PrimitiveComponent.h |
| Include Path | #include "Components/PrimitiveComponent.h" |
| Source | /Engine/Source/Runtime/Engine/Private/Components/PrimitiveComponent.cpp |
UFUNCTION (BlueprintCallable, Category="Rendering|Lighting")
void InvalidateLumenSurfaceCache()