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Unreal Engine C++ API Reference > Runtime > Engine > Engine > FPostProcessSettings
Syntax
UPROPERTY (Interp, EditAnywhere, BlueprintReadWrite,
Category="Global Illumination|Lumen Global Illumination",
Meta=(ClampMin="1", UIMax="2097152", editcondition="bOverride_LumenMaxTraceDistance", DisplayName="Max Trace Distance"))
float LumenMaxTraceDistance
Remarks
Controls the maximum distance that Lumen should trace while solving lighting. Values that are too small will cause lighting to leak into large caves, while values that are large will increase GPU cost.