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Sharp edges on heightmap

Hello,

I have been googling for days trying to find out why this happens, and was hoping that maybe someone knew how i can fix this. I have created a tiled height-map in world machine, once I imported all the tiles into the engine the overall height-map at a distance looks perfect but once you get close all the edges become sharp. I am using the highest quality that I have the patience for (8161x8161) just to rule that option out. I can use the smooth tool but that gets rid of the detail and for the scale i'm using, will take a very long time. I would prefer if anyone had a solution that doesn't involve the smooth tool.

Here are some examples of my problem:

([url]https://forums.unrealengine.com/attachment.php?attachmentid=8844&d=1408097507[/url]) someone with same problem with unsolved thread

My examples -------------------------------

[url]http://puu.sh/n5cAB/78749b3f0b.png[/url] [url]http://puu.sh/n5cCR/b418da6695.png[/url] [url]http://puu.sh/n5cDS/a6898972e8.png[/url]


Thanks a bunch

Matthew

Product Version: UE 4.10
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asked Feb 12 '16 at 02:27 PM in Using UE4

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Dark-_-Doppler
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4 answers: sort voted first

I would love a solution for this as well. Some sort of heightmap tesselation thingy would be awesome.

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answered Jun 27 '16 at 10:28 AM

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zxank
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You need to raise up component size (section size) and resampe it but beware of high memory usage.alt text alt text

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answered Sep 30 '16 at 01:28 PM

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A_Bishop
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These triangles occur simply because you are trying to put more details in a heightmap, that it can accommodate at given resolution.

The following are the solutions to handle the problem:

  • Increase heightmap resolution

  • Reduce Z scale of the landscape

  • Perform some sort of low pass filtering and/or smoothing on your heightmap before importing it in UE4**

The latter option should be your primary choice.

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answered Oct 04 '16 at 08:26 AM

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Deathrey
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Thanks for all the replies, I should try your suggestions, in the meantime however I've discovered that terrain tessellation solves it for me.

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answered Oct 05 '16 at 02:38 PM

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zxank
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