ZDoom

When I say single-file, I'm referring to those in textures directory or inside TX_ markers.
Example wad attached. The image should be translucent.

It only looks correct with vid_rendermode 3, in all other renderers it's differently non-translucent.
Rendermode 1: https://i.imgur.com/3ydKM9F.png
Rendermode 4,0,2: https://i.imgur.com/xdowJep.png
Rendermode 3: https://i.imgur.com/3IypTsk.png

Reported against cc52f8937

Fixed for the hardware renderer. Why the true color software renderer isn't doing this right, but the softpoly renderer is, is something to be answered by someone else, preferably dpJudas.

I have no idea why it does this for the true color software renderer. It probably picks the wrong drawer.