How to smooth polygon lines?

[DaveK]

Hello, 

I have a hosted polygon layer of parcel boundaries in AGO. I added the polygon layer to both a scene and a webmap (classic). In both cases (more sever in the scene) the polygon boundaries appear jagged. Is there any way to smooth these lines? 

Image of polygons in scene: 

Polygons in webmap (classic)

Any help is appreciated.

Thanks. 

[jcarlson]

Are you pulling those into your maps using the MapService layer or the FeatureService?

[DaveK]

This is coming in as a feature service. 

[jcarlson]

Strange! I don't use the scene viewer much, but I know it caches tiles differently. As for the map viewer, does it look any better in the new map viewer?

[DaveK]

It's MUCH nicer in the new map viewer, good to know. 

[AndreasUlmer]

In SceneViewer, can you check the quality settings? Having the slider on quality could help.

However the screenshot of SceneViewer looks definitely worse than it should be. Is it possible to share the webscene, or the layer so we can have a closer look?

[AndreasUlmer · Accepted solution]

Identified as bug / regression in 3D SceneView (missing antialiasing). Fixed, lines are smooth again.
Will be shipped with next ArcGIS Online release, Feb 2024.