ZDoom

This is a follow up to this old bug report:
viewtopic.php?f=7&t=63018

I know I've seen this working properly in the past with an older version on my older machine but it seems to have broken at some point recently. I've attached a sample wad here.

Tested on Gzdoom 4.4.2 running the openGl renderer with an nvidia GeForce RTX 2080 Super with Max-Q Design.

Here's a short video showing what I see on my end:
https://drive.google.com/file/d/1DPoIlC ... sp=sharing

Just to add my 2 cents.

It seems this bug appeared as early as 4.4.0. It used to work as intended in 4.3.3.
It doesn't seem to matter if it's OpenGL or Vulkan.

EDIT: To be clear, in 4.3.3 the shadows would get updated as the polyobject moves where now the shadow never changes.

fixed.