Before that I want it confirmed if you

[tawny berry]

(Sorry I had to make this here, I dont want to disturb the other devs)

So, I already find a way to have darkness in my scene, and it's about my exposure things in the HDRI sky, and my exposure in default HDRP file

here

and here, my default hdrp file

When you were talking about pre-bake, its about using some low configuration to make the bake quick right?

Okay it was that I think

And for the example you gave me, the BIG scene have just to wait more right?

(the indirect light control dont seems to change anything and I disable my HDRI Sky, Im not sure of his utility in an indoor scene)

[tawny berry]

So I was already making some of theses manipulation, maybe you can give me a nice low configuration to make pre-bake

[tawny berry]

@light tangle (sorry to mention you, I think you may have missed the topic)

[light tangle]

No worries, I was away from my machines

[light tangle]

I think sky type "none" does work but I usually prefer a black color just in case there might be any weirdness from having no sky defined at all

Indirect Lighting Controller can reduce sky / environment / probe influence towards black locally/temporarily
In this case it's already black so it'll have no effect

But since someone else suggested that I felt it necessary to point out what it really is for

[tawny berry]

oh yeah right, didnt think about it

[tawny berry]

I saw it has changes after the baking

[light tangle]

Baked lightmapping does produce indirect lighting as well, that's why it can also ensure that unilluminated areas do not have light in them for "no reason"

But that's more of a side effect
I would prefer baking if its unique benefits are needed

Namely bounce lighting and emissive materials

And the elimination of costly realtime lighting

If you're interested about SSGI:
https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@17.0/manual/Override-Screen-Space-GI.html
(that includes RTGI as well)

SSGI can somewhat give realtime lighting the bounce lighting you normally get only from baking, but in some circumstances it can improve the fidelity of both realtime and baked lighting

[tawny berry]

I took a look of the SSGI, isnt it pretty harsh on the performance ?

[tawny berry]

oh yeah okay

[light tangle]

It isn't cheap, but considering the cost of realtime global illumination it's a rather efficient approximation

As far as I understand in the case of RTGI, GPUs with RT cores do not really have to trade performance to enable ray tracing features, since they're processed separately
But I could be wrong on that

[tawny berry]

so SSGI is an alternative for having the indirect light I need to make light precisely in the editor ? (and after that I can bake for more precision?)

I prefer not using ray tracing

[light tangle]

Kind of
It adds bounces to lights on screen, which with finely detailed objects can beat baked lighting in quality, but baked lighting can much better handle illumination in areas that are too big to see from just one perspective

If you just want a preview of how baked lighting might look, you could use RTGI or even path tracing just to get glimpses

Even if you don't want to impose them upon your game's users

There are ways to speeed up light baking though

[tawny berry]

oooh, okay

I disable it right after taking a look

[light tangle]

If you:
Use GPU lightmapper
Exclude small or complex meshes from being lightmapped / from contributing to GI
Reduce samples and resolution for non-final bakes
Design and test lighting one room at a time to not re-bake everything each time

Following these steps my bake times range usually from ten seconds to up to a minute

[tawny berry]

Design and test lighting one room at a time to not re-bake everything each time
Oh! I can do that ? limited the zone of baking?

oh I missunderstand sorry

(am french, It may be visible)

[tawny berry]

yep okay

Im going to take a closer look on SSGI

[light tangle]

Unfortunately you can't exclude parts of a scene from a bake
But you can move parts of your level into another scene when you are designing lighting
You can also load multiple scenes at the same time with "additive scene loading", both in editor and in game