I've created an area using vertexes to set my slopes in GZDOOM Builder. Looks great in 3D mode, and works great in GZDOOM, all seems well... however.
I want the mod to work with Zandronum as well, and so far all GZDoom features have worked great! (Dynamic Lights, 3D floors, etc etc) until now. I've attached an image to show the problem, I was hoping someone might know a way around this or is this something that Zandronum just can't do yet??
p.s. ignore the missing back wall in the picture, that's just bad ceiling placement on my part! I'm only concerned about the lack of slopes in Zandronum! :)

Thanks in advance!
Adam