Texture lines with distorted effects don't render properly

[Iajada]

Hello !

I am playing some mods that are GZDOOM compatible, and I found a texture rendering bug that was not present in the previous versions of GZDOOM I used before (3.7.1 and 4.3.3). I also quickly tried with version 4.6.1, no issues. So it appeared at version 4.7.0.

In the hub map of Skulldash v1.10 extended edition, there is a series of translucent lines (action 208 : Translucent line) that have a distorsion effect (linedef 26791 and the other linedefs behind) to simulate a hell portal. The texture seems to not be replicated at the top and the bottom of the linedefs, creating holes there.

On gzdoom 4.7.1 (and 4.7.0) :

On gzdoom 4.6.1 or older :

There is the same issue when rendering distorted textures like liquids with 3d floors, here in Golden Souls 2 map 42 (action 160 : Sector Set 3d Floor, linedefs of sector 559) :

What is strange is that in this map, some green liquids are rendered propoerly, and others not. It may be related to the sector's height.


I changed several parameters in the options (hardware and texture options), I also reset all the parameters to default, or downloaded the zip files again, nothing changed. It happens when playing on OPENGL, OPENGL ES and Vulkan renderers on Hardware mode. The software mode seems to be OK.

I searched in the Zdoom forum if this kind of issue is already in a topic, but didn't find anything.

It's my first post, I hope I didn't break the rules !

[Enjay]

Same as this I suspect: viewtopic.php?f=2&t=74035&p=1207287

[Iajada]

Ah yes, it's exactly what I encountered, I didn't search midtex topics. Thank you !

I will wait for a reply on your topic.