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  3. NonNaniteVirtualShadowMapInvalidationHeightErrorThreshold

NonNaniteVirtualShadowMapInvalidationHeightErrorThreshold

For non-Nanite landscape, cached VSM pages need to be invalidated when continuous LOD morphing introduces a height difference that is too large between the current landscape component's profile and the one that was used when the shadow was shadow was last cached.

API > API/Runtime > API/Runtime/Landscape > API/Runtime/Landscape/ALandscapeProxy

Syntax

UPROPERTY (EditAnywhere, AdvancedDisplay, Category=Lighting,  
          Meta=(LandscapeOverridable, UIMin=0.0, ClampMin=0.0))  
float NonNaniteVirtualShadowMapInvalidationHeightErrorThreshold

Remarks

For non-Nanite landscape, cached VSM pages need to be invalidated when continuous LOD morphing introduces a height difference that is too large between the current landscape component's profile and the one that was used when the shadow was shadow was last cached. This height threshold (in Unreal units) controls this invalidation rate (a smaller threshold will reduce the likeliness of shadow artifacts, but will make the invalidations occur more frequently, which is not desirable in terms of performance. Disabled if 0.0. Only applies when using non-Nanite landscape and VSM.

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