I’ve used 4.26 Preview, and loaded up my project. The landscape I was working on is comprised of 400 tiles at 1009 resolution. in 4.26 Preview 1, I could quite happily load any number of tiles and work on texturing. Now with 4.26 Preview 4, the editor constantly crashes if I attempt to load 20 tiles. I do have landscape edit layers enabled.
Now the tiles I am trying to load haven’t been given a texture yet.
The crash is happening at:
Assertion failed: SizeY <= GetMax2DTextureDimension() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Texture.cpp] [Line: 571] Requested texture2d y size too large: 32768, 16384
i have the same issue for my map. My map is 2121 Tiles big, with each 1km². If i load tiles at Grid location x06_y10 everything works fine. If i open a tile at location x06_y17 it will crash. If i load a lot of tiles in the range from x06-x08 and y10-y13, resulting in a 34 Grid loading 3km*4km will work fine. My guess is that there is some calculation going on from location 0, 0 that will result in a crash. So if you want to work on your world you will, for now, need to work on a diffrent area. In unreal engine 5 they reworked the world composition system, i hope this will fix a lot of issues. Remeber you can upgrade your engine using ue5, but since its currently in early access its not save for deployment.
I’m experiencing the same crash issue. I’m trying to load in 25 tiles (4033 x 4033 each) for a 20.165km x 20.165km map from World Creator 2… with “Enable Edit Layers” selected too. UE4 (4.26) creates a single landscape actor for all tiles (levels). When attempting to edit the landscape (make simple sculpting changes with 3 or 4 of the tiles loaded, it crashes with the error:
Assertion failed: SizeX <= GetMax2DTextureDimension() [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Texture.cpp] [Line: 570] Requested texture2d x size too large: 32768, 16384
It sometimes deletes the landscape actor in the crash process and I haven’t been able to figure out yet how to recreate it without deleting all the tiles and reimporting the heightmaps… frustrating and preventing progress on my project.
This issue is happening because you have “Enable Edit Layers” enabled when importing the heightmaps. If you use this feature then it seems you’re out of luck, but if you can leave with it… at least for not then disabling this feature will allow you to keep progressing on your project.