Lumen - there should be DARKNESS - but it isn't - how to enable hidden shadow option for lumen?

Development Rendering
,
1

Hi,

is there a possibility to: in mesh options> lighting> advanced tab> ‘hidden shadow’ - make this option work for lumen

setup> I have a room with one sided mesh (so I can see inside, but when actually inside, I see the ceiling), on top of this mesh is a box shutter, which is hidden, but a ‘hidden shadow’ is turned on, but its not really working, if I am in the room, there is a total darkness (I want that). but when I get out of the room to look at it from the outside, Lumen starts light casting
I want to have total darkness also when I look into the room from the outside, how do I achieve this ‘hidden shadow’ with lumen?

Screenshot 2022-09-14 212020
Screenshot 2022-09-14 2120201531×965 178 KB

thx

2

There is no magic command. You have to make proper walls, or box it in with cubes :slight_smile:

3

thx for reply!

it is boxed, I just need to hide the box, to look inside, but when I do that light goes inside, I dont want that, is there a way how to tell lumen: ‘yo, dont go through here’, this works for raytracing nicely…

4

Not that I know of… :blush:

5

thx,

what I need to achieve is: in mesh options> lighting> advanced tab> ‘hidden shadow’ - make this option work for lumen

6

Really surprised it works when you’re inside the room honestly.

You can try disabling screen traces: r.Lumen.ScreenProbeGather.ScreenTraces 0

Though I suspect screen traces are probably the only reason why your interior is dark when you’re inside it so this may not work as desired.

1 Like
7

omg, this works, did not know there is also screen tracing involved with Lumen, thank you so much!