Interior Rendering - Light Build

Development Rendering
1

Hi,
I’m preparing some interior scene. Before buliding light it looks rather okay. After building (production quality) whole scene is much more darker, like there is no indirect light. I use direction light(Sun) and 2 spotlights that are turned to plane placed behind windows.

Thanks!

https://1drv.ms/i/s!AipMUvfLlmIdhG5bafFBjV9ntu33
https://1drv.ms/i/s!AipMUvfLlmIdhG32T8Aw3LZXpJOE

2

Looks fine to me, though you need to increase the lightmap resolution on some of your meshes. Also, the chairs aren’t showing up properly, the lightmap UV’s might be wrong on those.

3

Some questions:

Did you use lightmass portals?
Why not use a skylight?
How many bounces did you set for the Lightmass?
Directional Light Indirect light quality?

Regards

4

  1. I haven’t use Lightmass Portal, in fact thanks to your post, I’ve learned about them, now I’ve one inside window

  2. There was no skylight, because I was making similar scene as Xoio, now i have one(intesivity 2), on simple preview it looks better, but after building it is the same dark.

  3. 10

  4. Indirect Lighting Quality from World Settings is 1. Indir. Lighting Intensivity from directional light is 4.2

The problem is that increasing intensivity light is not affecting how dark is the room. Should I use it much much more, not looking for preview? Min. lightmass resolution for meshes is 1024.

Thanks

https://1drv.ms/f/s!AipMUvfLlmIdhH_QBe6G-cNQRyEq
This is how the lights are placed, with downgraded exposure

5

Ok, can you post the settings of your lightmass, directional and skylight to see where may be the problem? Also, did you modify in the post process volume the auto exposure values? The ceilign is black. Are the UV’s correctly assigned in the static meshes?

Regards

6

The xoio scene is very old (before lightmass portals) and is not the newest and correct workflow.
Try a default stationary skylight, a default stationary sun light and add a lightmass portal. Should give much better results.

Download the Lightroom demo scene in the marketplace. It has been updated one or two weeks and it represent the correct way to lit interior scene!