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    Black shadows along landscape seems

    Hello,

    I am playing around with importing height maps. I am sure I am no doing it right yet but one of the most obvious problems I seem to have is that there are obviously wrong shadows along the seems of my landscapes.
    After I hit "build" it builds the lighting and then the black shadows appear near the borders.
    I have added ImportanceVolumes for each of my tiles (there was an error at first which is fixed now).
    Am I missing something else ?

    Click image for larger version

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    #2
    My first guess is that they are overlapping. What happens when you distance them apart?
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      #3
      sorry for the delay, I didn't have time lately.
      It is not overlapping terrain.

      here another two screenshots

      Click image for larger version

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      Click image for larger version

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      all I do is create a new map , import two heightmaps (following the documentation rules regarding landscape sizes i.e. 1009x1009)
      then I align them and rebuild lights.

      on both landscapes I set the static light resolution from 1.0 to 4.0 (as suggested in some other forum threads)

      any suggestion would be appreciated!

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        #4
        It seems to be the lightmap resolution still not high enough, comparing the screenshots in your first and second posts. Instead of using separate 1k landscapes i'd go for a single 2k one though.

        Edit: Btw, try a single lightmass importance volume covering both landscape then build the lights again and see if it helps.
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          #5
          I have put an importance volume around the two terrains, didn't really change much.
          I have now put the static resolution from 4.0 to 10.0 not sure how long it will take to build.

          the reason why I use smaller terrains is just because its a test right now - eventually I want to setup a streamed terrain made of several chunks of landscapes.

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            #6
            okay so after my unreal crashed when trying to build with 10.0 I tried again with a resolution of 8.0 and the result is the same :-/

            Click image for larger version

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              #7
              Anyone knows how I can fix this? I tried again in the 4.3 preview and I still get these weird artefact shadows along the seems of my terrains

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                #8
                Is it possible for you to upload the map somewhere so that we can take a look at it/try some stuff ?

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                  #9
                  I sent you a private message with a simple test project.

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                    #10
                    Ok, I will take a look at it

                    Comment


                      #11
                      As far as I can see you just have to work more carefully Those shadows will appear when some of the landscape parts aren't connected very well:

                      Click image for larger version

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                      The red part was overworked by me and as you can see, no wrong shadows are there.

                      How I did it:
                      1. First of all import your landscapes
                      2. make sure that the part, where the landscapes are connected, is overlapping a little bit
                      3. now decrease (erosion tool), increase or smooth the overlapping seams so that they are connected very well

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                        #12
                        Oh oh that would be a problem though because my terrains are created in Wold machine.
                        That would mean I need to go through all my terrains and manually fix them... ouch!

                        What lighting resolution did you use?

                        Ps:nvm just saw its 1.0

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                          #13
                          Actually the standard resolution ^^ (1.0)

                          Edit:

                          Yep, you already saw it

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                            #14
                            Have you tried placing those landscapes with World Browser and see how lighting builds like that?
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                              #15
                              how did you modify both terrains with the smooth tool and guarantee that they share the same vertex height for each vertex along the seam ?

                              when I try use the smooth tool it only modifies the "current" terrain.

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