HDRP - Dark Interior

[unreal cliff]

How can I get the interior area to actually be dark?

I've tried using Exposure, but I kind of want the opposite effect.

[shut shell]

Baked lights with light probes and reflection probes would allow you to get "correct" lighting in there
But alternatively you can use the indirect lighting controller override to simply darken ambient light and reflections in that area

[unreal cliff]

Thanks for the reply

Which of these overrides would you suggest using

Ohh wait, I know what you're suggesting. It's half of what I want. Now it's dark inside which is good. But it still looks bright from outside.

[shut shell]

All multipliers equally

[shut shell]

What does that mean?

[unreal cliff]

It's now dark when the camera is inside the trigger, but still looks bright from the outside.

[shut shell]

I seem to remember this particular override affected meshes rather than cameras, but it's been a number of years since the last time

I guess then you might need baked lighting

[unreal cliff]

I'll give it a whirl

A reflection probe seems to do the trick

Seems the scene was reflecting the sky even though it was inside

[unreal cliff]

Yeah I played around a bunch and got it exactly how I want it

[timid wind]

it shouldn't be completely dark

bake lighting

[shut shell]

Reflections/specular and diffuse lighting are two parts that make up the lighting
The first is controlled by reflection probes, the second by light probes or lightmaps

I notice your shadows on the outside have become fully black which suggests you lost diffuse indirect lighting entirely at some point

[tulip musk]

I use ray traced GI to solve this, and I shove a black fog volume in there as a fallback.

Just an alternative in case light baking doesn’t work.

[unreal cliff]

Didn’t know you could ray trace that

Is it as simple as clicking the option at the bottom of the directional light for the raytracing?

[unreal cliff]

It’s perfect, I can play with exposure to micro adjust

But that’s pretty much exactly as I want it

I just can’t stand it when you see an interior from the outside as well lit then suddenly fades to darkness only when you enter.

Windows and holes will work well to allow light into where I need it, but that pipe is for a sewer / drainage system which is supposed to be obtusely dark.