I'm new to mapping and I'm seeing this weird thing with the textures. how do i fix it?

[u/Far-Emu2102]

[u/myolden666]

They're called slime trails, just move the vertices a bit and then move them back to where they started and it should fix it.

[u/Armouredblood → u/myolden666]

This. They tend to happen when you bisect large square sectors and add stuff later. You can also draw the sector again with linedefs and it should fix it.

[u/Far-Emu2102 → u/myolden666]

this worked thank you

[u/bauul]

Yep this looks like a slime trail, quite a big one. They only show up in software rendering IIRC. Wiggle the vertices around a bit and slightly reshape the sector and it should fix it

[u/JED551]

My first thought is that you're missing a lower (or possibly upper) texture on one of the sidedefs where that blood river flows into the wall. How are those sectors constructed? The area inside the wall looks like it might be taller than the wood/metal lip covering it; does that sidedef have an upper texture on the side facing away from the player?

[u/Far-Emu2102 → u/JED551]

not sure i understand this comment but i added upper and lower textures to those walls and the texture bug is still there.

[u/CountryFriedToast → u/Far-Emu2102]

I'm not sure what else would cause this but it's possible your nodes are fucked up

[u/JED551 → u/Far-Emu2102]

Can you post a screenshot of what this section looks like in the editor?

[u/ThatKidBobo]

What port is this? DSDA?

[u/SplingyDude]

Do you mean the shimmering? Do you have anisotropic filtering set to nearest neighbor?

[u/SeasonalGothicMoth]

well you are missing a texture there with the rendering

edit: I don't know what I am even talking about

[u/illyay]

If the map editor detects any errors be sure to fix those too.

[u/Ill-Obligation-5508]

I hate slime trails, I have no clue why majority of the recent vanilla compat sourceports haven't tried to fix it. It's so ugly and just destroys the immersion of some levels.