Landscape Spline render totally Deforming with Distance

General Issues and Bug Reporting UEFN Validation
, , , , , , , , ,
1

Hello, I would like to know how to fix my problem on UEFN that affects my entire project.

I would like to make road splines on my landscape with custom meshes containing a certain number of vertices & triangles. However, from the moment we move away from the spline segments, they begin to deform strangely.

I understood that the more complex a mesh was by its number of vertices and triangles, the more the spline could have defects, however I have never had and seen this problem elsewhere.

To add more context here’s the video of the problem in a session :

And thats the problem in the viewport of the mesh in UEFN ; as you can see, I didn’t use LODs (and I didn’t reduce triangles on the mesh anyway)

So I was previously informed that adding a lot more subdivisions should fix the problem but it doesn’t change anything at all (what you see in the videos are the meshes with a lot of subdivisions) and here are a screen of the normal road…

Road No subdivisions
Road No subdivisions1920×1080 236 KB

and a screen of the road with a lot of subdivisions…
Road With subdivisions
Road With subdivisions1920×1080 274 KB

If you could help me find a solution or if you want to have more details, please answer me directly on this post,
Thank you!

1 Like
2

@Volviik Thank you for your report! Can you please re-post using the “New Issue” option on the Issues and Bug Reporting forums? Posts with this feature are connected directly into our development team so we can quickly get to them!

For more information, such as how to get the reference ID, please check out the article here: Using the Creative and UEFN Bug Reporting Form

3

Hi Volviik,

In your video I’m seeing ‘Number of LODs’ set to 2 - If you set that to 0 and click ‘Apply’ does that solve the problem?

4

Sadly It doesn’t change anything with 1,2 or 5 LODs, even by setting a special LOD group like I used too (for roads I usually set LargeProp) :face_with_diagonal_mouth:

5

He, I just post it in the right place this time!

Just hope someone will find a solution :pray:

6

Hi Volviik,
thanks for using my Product!

For everyone else (I send you a reply ^^) , this product was not tested for UEFN, but since the meshes look like weird on these screenshots, I recommend to download and use the lastest Version of Road Essentials.

  1. The Wireframes are to dense, even for LOD0.
  2. Adding more LODs (“1,2 or 5 LODs, even by setting a special LOD group”) don’t help you to solve this Problem. You could try to delete the LODs and just use LOD0. If this doesn’t solve your problem, then it’s a UEFN Problem.
  3. These LODs jump to fast to the next LOD Level → Wrong Settings? Did you made any changes?

For me the Problem is:
a) maybe UEFN ?
b) The Landscape Spline Settings. Did you change the Scale of the Landscape Spline Meshes? on X or Y? The middle Road Lines are to close to each other. I know a lot of people doing this, to achieve better curved roads, but here you don’t need to do this, because I made the meshes for this.

image-1
image-1407×422 21.2 KB

Something is wrong with your meshes, since this is how the wireframes whould look like on LOD0, your ones are too dense and I only can imagine that you changed the Scale of your Spline:

image
image502×396 103 KB

The Solution

  • Download the lastest Version of Road Essentials.
  • Create a test project with a new version of Road Essentials.
  • Open the Showcase Map and check the existing Landscape Splines → do they also seem to be weird?
  • Create a test project in the Unreal Engine (4.26, 4.27, 5.0, 5.1, 5.2, 5.3, 5.4 or 5.5), test it there too.
  • Check your Landscape Spline Settings

Just removing the LODs don’t help us, since the meshes looking in general weird comparing to the ones in my Pack.

So if someone has a similar problem with their own spline, my product or other creators products, make sure that you check your Landscape Spline Settings → Scale (1,1,1)

_

Good luck!
I hope this helps you guys!

Edit: Also, the Meshes edges looking weird - does the Road Master Material work correctly in your project? :open_mouth: