Messed up Gzdoom UDMF map

Ask about mapping, UDMF, using DoomBuilder/editor of choice, etc, here!
Forum rules
Before asking on how to use a ZDoom feature, read the ZDoom wiki first. If you still don't understand how to use a feature, then ask here.
ericastro
Posts: 2
Joined: Sun Mar 29, 2026 7:50 pm
Preferred Pronouns: He/Him
Operating System Version (Optional): Ubuntu 20.04
Graphics Processor: ATI/AMD (Modern GZDoom)

Messed up Gzdoom UDMF map

Post by ericastro »

Hello,
I’m just getting started with GZDoom and using the UDMF map format. I’ve been using the GZDoom Builder editor to create the map. When I load the map in GZDoom, the architecture shows up as angled black lines against the sky texture, and the geometry looks completely messed up.

I feel like I’m missing a step related to properly compiling or saving the map. The map mostly uses a few 3D sectors, but otherwise it’s a fairly vanilla setup.

Any help or tips would be greatly appreciated.
User avatar
Kappes Buur
 
 
Posts: 4208
Joined: Thu Jul 17, 2003 12:19 am
Graphics Processor: nVidia (Legacy GZDoom)
Location: British Columbia, Canada

Re: Messed up Gzdoom UDMF map

Post by Kappes Buur »

In order to solve your puzzle it would help if you could post some screenshots, or better still, a link to your map, either zip or 7z.

The last revision of GZDoom Builder was in 2017, so it is not exactly up to par with the latest development of GZDoom or UZDoom. I would suggest to use Ultimate Doom Builder as your editor.

I made a map in both editors and see no immediate difference.



Return to “Mapping”