Only 1/4 of my heightmap is imported

Hello,

I’m just starting out and tried importing an heightmap as my base landscape but the editor only imports a quarter of the original heightmap.

What am I missing? ^^’


Non square landscapes are not a thing, so ehatver is letting you select different amount of components is at fault (could just be your heightmap file is not the right size).

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I see, but I have exactly the same problem with a square landscape using recommended sizes.
The problem seems to appear over 20172017 resolution. That works. When using 40334033 only a quarter of the heightmap is imported.

I’m using UE 5.5 released recently.

After testing further, importing a 4033*4033 terrain works if I touch nothing about the settings. But I end up with 4096 components.

If I follow the technical guide here and change to 2x2 sections and 32x32 components to limit myself to 1024 components… I end up with the original problem.

I feel like I’m not understanding something basic ^^'.

Creating the terrain (with exactly the same settings) and THEN importing the heightmap works. Weird, but that’ll do.

The map import is probably saying “screw you, this map is X pixels wide, im using the settings I want to use”.

Its like a trend you have to get used to with the engine…

2X2 is definitely best.
1024 components may still be a lot (1024 draw calls just for that landscape tile).

4033 is a bit off scale (they screwed the technical guide to where its not only non technical but also just wrong).

If you are ostinate about using landscape (instead of taking things to a DCC and having a much easier life + a lot better performance) I would suggest splitting the landscape into 4 tiles of around 2k max in size - if this is how big your landscape will ever get.

Now there are other considerations to this.

For instance, if you want your gameplay to happen in the center of the map, then you have to split things to where you have a full tile in the center and not a tile intersection (because then all landscapes are always loaded leading to poor performance).

In that case spit into 3x3 (of 1k each or just about?) Will do better. OR, and that is an option if you benchmark, you can stick to the single tile at 4k res (but it shouldn’t be 4033. Its a power of 2 number +1 usually).

I suggest getting the info off of way back machine (and just using the old system rather than the sorry replacement that doesnt work they came up with) when using tiles/landscape.