Lets make Lightmass EPIC (and understandable)

[Norman3D]

Epic Games Japan hold a workshop with a focus on Lightmass named "Lightmass Deep Dive" last year. A Japanese architectural artist, Kenichi Makaya, created Casa Barragan on UE4. And he gave a presentation about making of the scene with Lightmass. Our translators translated the slides for the presentations to English. Actually the presentations were based on 4.13, so some of the information might be somewhat out of date. But I believe their concepts and knowledge of their workflow are very useful and interesting.


Practical usage of Lightmass in Architectural Visualization
[ATTACH=CONFIG]138039[/ATTACH]

CASA BARRAGAN Unreal Engine4
https://www.youtube.com/watch?v=Y7r2...ature=youtu.be

SlideShare
https://www.slideshare.net/EpicGames...mass-deep-dive

This presentation is based on "Only One Bounced Sky Lighting". Many Japanese artists are looking forward to officially support to multi bounced sky lighting like this thread: "Lightmass: multi-bounced sky lighting"
https://forums.unrealengine.com/show...ight=lightmass


We posted another presentation about Lightmass on this thread.
Lightmass Deep Dive Presentations

Unfortunately most of your links are broken!

[Nori Shinoyama]

Epic Games Japan hold a workshop with a focus on Lightmass named "Lightmass Deep Dive" last year. A Japanese architectural artist, Kenichi Makaya, created Casa Barragan on UE4. And he gave a presentation about making of the scene with Lightmass. Our translators translated the slides for the presentations to English. Actually the presentations were based on 4.13, so some of the information might be somewhat out of date. But I believe their concepts and knowledge of their workflow are very useful and interesting.


Practical usage of Lightmass in Architectural Visualization


CASA BARRAGAN Unreal Engine4
https://www.youtube.com/watch?v=Y7r2...ature=youtu.be

SlideShare
https://www.slideshare.net/EpicGames...mass-deep-dive

This presentation is based on "Only One Bounced Sky Lighting". Many Japanese artists are looking forward to officially support to multi bounced sky lighting like this thread: "Lightmass: multi-bounced sky lighting"
https://forums.unrealengine.com/show...ight=lightmass


We posted another presentation about Lightmass on this thread.
Lightmass Deep Dive Presentations

[TemporalDrift]

Hi, I'm using latest ue4 4.15, are the lightmass portals working, they don't seem to be contributing to me scene.

[TAXI]

SciFiHallway with my config.

[studiobeyaz]

I think you could do better without even touching the baselightmass.ini.

You just have too much lighting in your scene imo. Use a HDRI skylight with a subtle directional light for the sun. That should be enough. Use the new lightmass portals and drop the spot lights :-)
Raise lighting quality a bit.. try 4. See how it looks.

Also, use static lights!!!

what is the lightmass portals????? i cant found anything lightmass portals(((

[tc22]

nice setting!

[Bigodon]

Are the light map resolutions on all the assets reasonable?

from 64 to 1024
2048 for floors, walls, roof

[ZacD]

i was getting like 13 to 15h for bake the light on production
tried the indirect on 10 and takes a whole day for 0.5 percent on swarm, lol (32gb of ram @2800mhz and i7 5820k @4ghz)

Are the light map resolutions on all the assets reasonable?

[Bigodon]

anything above 2 on Indirect Lighting Quality
is giving me some crazy irreal baking time, ok... the scene is not that simple

this is a big interior, full of props, with many rooms with windows and artificial lights, there are 7 light portals only on window
i'm going to try a slight increased value to 4 or 5 and see if thing still getting ugly on baking time, with:

Static Lighting Level Scale = 0.15
Num Indirect Lighting Bounces = 100
Indirect Lighting Quality = 2
Indirect Lighting Smoothness = 1.0

i was getting like 13 to 15h for bake the light on production
tried the indirect on 10 and takes a whole day for 0.5 percent on swarm, lol (32gb of ram @2800mhz and i7 5820k @4ghz)

the ini edit wasn't anything to scary about, i used the [MENTION=9000]TAXI[/MENTION] experiment, and before that i only changed the NumHemisphereSamplesScale = 64

[emreonder]

More realistic shadows

Hello,

I red the whole post and try to do things said in this post. However, meshes look like flying still. How can i get shadows more realistic with below settings? I'm using just skylight with ambient occlusion settings in world settings

[Luoshuang]

Lightmass needs this feature!! It's something similar to what was used in The Last of Us to fix seams

https://github.com/ands/seamoptimizer

In addition to that, the author has another interesting thing, https://github.com/ands/lightmapper, which is a GPU-accelerated lightmap baker.

[ZhenyaChistovsky]

Lightmass needs this feature!! It's something similar to what was used in The Last of Us to fix seams

https://github.com/ands/seamoptimizer

I have never seen this problem in the UE4

[AndrewM47]

Lightmass needs this feature!! It's something similar to what was used in The Last of Us to fix seams

https://github.com/ands/seamoptimizer

Wow, i just read "lighting techniques of the last of us" and that seam optimizer technology is something epic should consider implementing. +1

[Norman3D]

Lightmass needs this feature!! It's something similar to what was used in The Last of Us to fix seams

https://github.com/ands/seamoptimizer

[lobachevscki]

Looking for general advices in this scene.

No Post process.

One Skylight (with HDRI) and Directional light, a number of interior lights.

For this bake i just used the Medium Quality and toned down my World Scale to .2, bounces to 15 and Quality to 10.

We feel the light is not quite balanced yet, and there is a noticeable contrast, but cranking up the settings on the lights washes out everything.

Any advice?

https://www.youtube.com/watch?v=57b1CiL0A9k

Thanks.