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Flashing/Flickering Basemap and Image Layers when playing in Editor

JosefStoeger

Hello! Firstly thanks for all the hard work on the sdk, I can see it has a lot of potential.

Although in the editor preview everything works fine, my main issue is that once I click play, parts of the basemap and image layers in a global scene flicker inbetween black and normal. This occurs even when the image layer is turned off. I have attached a screenshot below.

In a local scene I have created, the same sort of issue occurs, however it flickers to white. (This scene also has a basemap and image layer.) I tried to take a screenshot of this but when the windows key is hit in the local scene, there is no more flickering.

I really want to continue using the plugin but it's unusable right now! Please help!

Josef

ArcGIS_Error_1.JPG

JesseWickizer_0-1724180002229.png

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Matt_Nelson

Can you share a video. I can't really tell what you are describing from the image.

JosefStoeger

Hi Matt,

The issue has resolved itself on the local scene however it is persisting on the global scene. Although not shown in the video I have tried setting all other components in my scene to 'hidden' so I think it is definitely the basemap/image layer.

Matt_Nelson

Ok thanks for sharing that.

Matt_Nelson

Would it be possible for you to share a .umap for this level with us? It would make it easier to reproduce.

JosefStoeger

The filetype .umap is not supported for upload on this forum - is there an email I can send it to?

JosefStoeger

Hi Matt, not sure if you got my previous post, but .umap is not supported. May I have your email to send it to please?

Best,

Josef

LuisMorales1980

Hi! Another developer here, trying out the SDK on Unreal Engine. I'm experiencing something very similar, except that I'm trying to render out visuals using Unreal's Movie Render Queue. I have a camera that's being animated using Sequencer, and I've added the "ArcGISCamera" component to this camera. The animation starts very far from the scene origin, and is I get closer it will load different LODs for the basemap and some 3DGeometry layers I've added. Seems to me this is happening because it's getting the data from the server as it goes, and as it loads we see flickering due of the tiles being swapped out. Is there a way to cache or pre-load the layers? Or switch off dynamic loading?

Matt_Nelson

Hi @JosefStoeger I think I have a couple of things that can solve your issue.
1. Either disable occlusion culling https://esri-runtime.slack.com/archives/C03QPCPL0SV/p1668783159771629?thread_ts=1668076481.938819&cid=C03QPCPL0SV
2. Enable the heirarchical z buffer https://docs.unrealengine.com/5.1/en-US/visibility-and-occlusion-culling-in-unreal-engine/#hierarchicalz-bufferocclusion

I believe both can solve your issue of the z fighting we are seeing causing the tile to flicker.

We are investigating more proper solutions for this but in the meantime I think this should help you.

that_MichaelSmith

This is what the flickering looks like for me. It seems to be oscillating between levels of detail of the textures of the basemap.

that_MichaelSmith

found the issue, I had an extra ArcGIScamera component in the level. Flickering fixed!

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