Followed the directions and enabled the Extend default luminance range in Auto Exposure settings
I do know the scene is there because removing it and using basic lighting does reveal it if not very well.
I would appreciate some trouble shooting steps on this
Hi @HungryRobotics ,
That’s strange, that usually seems to happen only when Extend default luminance… is disabled. If for some reason enabling the that option doesn’t fix it, you may be able to reduce the Lux intensity of the CesiumSunSky by going to it’s directional light. This will bring the light intensity down into the normal range instead of dynamically expanding the luminance range.
I’ve run into this when using an older pawn blueprints that don’t have auto exposure turned on. Suggest checking the view camera on your pawn to make sure your view camera is auto exposing.
I’ve reproduced this when migrating a project from a previous version into 4.26.x
No matter what I tried the scene was always washed out. If you selected Unlit you could see the tiles but Lit just white.
I recommend starting with a fresh 4.26.x project, get cesium setup, and then migrate in your older content.
I created a new scene in 4.27 and got the same white out effect. I can not see if terrain data is coming in ? prefer a UE 5 version,. but this does make it abit hard to see what Cesium can do.
Hi @Thomas4D, can you confirm that you checked “Extend default luminance range in Auto Exposure settings” in your project settings? That’s usually the cause of a washed-out white scene. If that doesn’t fix it, can you share your project so we can take a look?
Also, Cesium for Unreal is available for the official Unreal Engine 5 that was released today. It will be on the Epic Marketplace soon (as soon as Epic is able to approve it), but in the meantime you can get it from GitHub and extract it to your Engine/Plugins/Marketplace directory:
Kevin
Hi Kevin, I’ve found a way to reproduce the “washed-out” white scene, even if after checked “Extend default luminance range in Auto Exposure settings”.
I use UE 5.0.1, CesiumForUnreal plugin from Epic Marketplace.
If I create a new empty UE desktop project, after I checked the “Extend default luminance range in Auto Exposure settings”, In PlayMode, the scene start all white and gradually become normal.
If I create a new empyt UE mobile project, after I checked the “Extend default luminance range in Auto Exposure settings”, it still a washed-out white scene. If I replace CesiumSunSky with a normal DirectionalLight, the scene is not all white.
Hi, I was facing this problem too.
I was pretty early on in development so I just started a fresh project, and it worked. Hopefully this helps anyone that needs support.
If you guys have already checked “Extend default luminance” in the Project Settings and you’re still getting wash-out:
Grab the Cesium Sunsky in your Ouliner.
Select the directional light component of Cesium Sunsky in the lower panel.
Set Lux to 10 or 15.
The default Lux setting with mess with emissive particles, etc. Extending luminance seems to generate a realistic amount of light regardless of Lux setting as well.
Hello @zhaojun ,
We have an option on the CesiumSunSy for mobile rendering. My understanding is that the CesiumSunSky in its normal configuration doesn’t work on mobile for a number of reasons, but it should work after enabling the “Use Mobile Rendering” option. It will looks different though.
Let me know if that fixes your specific issue, even though it might not fit some of the other people’s issues on this thread.
-Nithin