Need help with 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.
lauriking
Posts: 1
Joined: Thu Feb 26, 2026 3:13 am
Preferred Pronouns: She/Her
Operating System Version (Optional): Ubuntu 20.04
Graphics Processor: ATI/AMD (Modern GZDoom)

Need help with Gzdoom UDMF map

Post by lauriking »

Hello,
I’ve been experimenting with GZDoom using the UDMF map format (I built the map in GZDoom Builder). When I load it in GZDoom, the level’s geometry renders as thin black angled lines against the sky and the architecture is completely broken. I suspect I’m missing a step when compiling or saving the map. The level only uses a few 3D sectors and is otherwise a vanilla-style map.

Any tips or advice would be much appreciated.
Top
User avatar
Kappes Buur
 
 
Posts: 4204
Joined: Thu Jul 17, 2003 12:19 am
Graphics Processor: nVidia (Legacy GZDoom)
Location: British Columbia, Canada

Re: Need help with Gzdoom UDMF map

Post by Kappes Buur »

3D sectors (160) are easy enough.
manually https://www.youtube.com/watch?v=iM7qOXN0Lpw&t=53s
3D mode https://www.youtube.com/watch?v=jdMHTGhpmpc&t=24s
If needed the heights can be tweeked in Visual Mode.

But, for your map, more info is needed.
The best would be to provide a link to the map.
Top
User avatar
Enjay
 
 
Posts: 27550
Joined: Tue Jul 15, 2003 4:58 pm
Location: Scotland

Re: Need help with Gzdoom UDMF map

Post by Enjay »

Yep, providing a link to the map would be best.

Have you tried running the error checker? (Hit F4 to bring it up.)

Also, you mentioned GZDoom Builder. It became Ultimate Doom Builder some years ago now. So, if you are still on GZDB, it might be worth upgrading to UDB as it contains lots of fixes and improvements. viewtopic.php?t=66745
Top

Return to “Mapping”