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Subtle seams in connected terrain

Discussion in '2018.3 Beta' started by DougRichardson, Oct 4, 2018.

  1. DougRichardson

    DougRichardson

    Joined:
    Oct 7, 2017
    Posts:
    74
    I'm seeing some subtle seams in auto-connected terrain with imported heightmaps. I've taken care to make sure the overlapping edges of each heightmap matches it's neighbors identically, and did hex dumps/diffs of the edges to confirm they match exactly.

    In the 2018.3.0b4 release notes there are two issues related to auto connect and seams between terrains:

    Terrain: Fixed issue where smoothing along terrain seams would create lines/creases along the seam. (1061923)
    Terrain: Fixed terrain auto connect​

    However, the seams I'm seeing still appear in 2018.3.0b4. I've filed a bug report (1087844).

    Here you can see a subtle edge in the terrain. It's pretty hard to see in a static image, but when you are moving around the scene it is more obvious.

    1 seam.png

    This image shows where the edges of the terrain are (I've moved the terrain to make it clear).
    2 split so you can see where the tiles are.png
     
  2. LeonhardP

    LeonhardP

    Unity Technologies

    Joined:
    Jul 4, 2016
    Posts:
    3,125
    Thanks a lot for this report! It's been reproduced and forwarded to the developers.
    https://issuetracker.unity3d.com/is...ubtle-seams-at-certain-distances-slash-angles