Lets make Lightmass EPIC (and understandable)

anonymous_user_6096f04f · January 4, 2016, 2:05pm

I’m not sure if this is as good as the ones you mentioned but this is with .7 setting. I would try the scene with .2 but my computer can’t handle that setting. Watch in HD.

anonymous_user_fa875142 · January 4, 2016, 2:51pm

Very professional presentation, i think the realism factor can be better. Did you use low lightmap res ? what was your lighting set up, and did you use global illumination ?

anonymous_user_6096f04f · January 4, 2016, 3:39pm

It was my second try at UE4 so it needs improvement. I think the highest lightmap rez is 1024, can’t remember what I did for lighting, I’d have to look, and yes I used GI.

Edit I used an HDRI and bounce lights out the window, the floor lightmap is 2048 rez, walls 1024.

anonymous_user_fa875142 · January 4, 2016, 4:41pm

I’ve not tried a night scene yet but i was finding with my day scene, global illumination was drowning out everything making stuff look less defined (maybe i didn’t master it enough to get good results)
I’m currently getting good results with just a direct+skylight - better than i was getting with hdri in cubemap, and no real difference between bounce card and current method. I followed tutorial on ue4arch. The thing i would add is that indirect lighting plays a big part too, it goes above 10 for anyone who needs more. Your skill level obviously looks pro though, just my personal taste maybe.

anonymous_user_6096f04f · January 4, 2016, 5:08pm

Hmm, GI shouldn’t be the culprit. Maybe too much ambient lighting? There are just so many variables to tweak in the engine.

rafareis123 · January 4, 2016, 5:45pm

Just some tests with only skylight

I have used 0.15 in static lighting level scale and NumHemisphereSamples=128

anonymous_user_6096f04f · January 4, 2016, 6:00pm

Those look great! 4.11?

rafareis123 · January 4, 2016, 6:13pm

Yes. But I have not achieved the same beautiful small shadows as in 4.9 and I don’t know why. It’s not so sharpen anymore, but the rendering times are fine now.

anonymous_user_6096f04f · January 4, 2016, 6:32pm

What was the build time and your computer specs?

Also, I want your leather material!

anonymous_user_fa875142 · January 4, 2016, 7:53pm

Looking awesome rafareis, great lighting, reflections, colour balance - everything. This is the kind of stuff that inspires me to get better.

erodann · January 5, 2016, 11:07am

Hi !

i’m trying to create a simple scene with Lightmass Portal but I have some problem with some strange artecfact of the roof of my scene.
It’s the second scene that make this error. I have the same problem if I seperate my roof to the wall or not.
This is an example of my problem :

ZacD · January 5, 2016, 5:46pm

Is the lightmap resolution on that model large enough? Is the ceiling and roof one continuous mesh or are they separate floating parts?

TONOLITO · January 5, 2016, 10:19pm

Hi Guys!
Some WIP screenshots from my first archiviz Study (rendering and light) within the UE4 11. The design is based on a scene from “EvermotionArch30Vol.”.

First my parameters inside UE editor:
Static lighting level: 0.5
Num indirect light bounce : 3
Ind. Light qual : 1
Ind. Light smoothness : 1

Standard content material and light for the scene -> 1 lightsource and 3spotlights (1x station + 2x static).

Inside the baseconfiglighting.Ini :NumHemisphereSamples=64
Lightmaps : 1024 for walls, 512 for the floor, 64-128 for the props/asset
Build time: 1h05 for the lighting on “high quality”

I wonder how to improve the lighting ? Tweaking the number of “ind light bounce”/NumSphere", remove the standard skyPhere with an HDRImap (ie : tutorial from Rag3DViz website)? Add StaticProjector + cardboard for the lighting/emissive cardboard ??

Thanks for your feedbacks!

PS: the screens are sharper/smooth in “play” mode.

http://tof.canardpc.com/preview/dca6a79e-c74c-4625-942b-86bfe38b5692.jpg
http://tof.canardpc.com/preview/273cf345-1f78-4c96-92d1-8fc1779e3b3e.jpg
http://tof.canardpc.com/preview/f917de6d-8a83-4886-a5ea-e21501ab40a1.jpg
http://tof.canardpc.com/preview/7d03a2e4-ffbf-461e-8a13-d2040cd11284.jpg

heartlessphil · January 6, 2016, 5:56am

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!!!

heartlessphil · January 6, 2016, 7:29am

I’m having fun doing tests. Both have the same lightmap resolutions, production setup, etc.

Mihanix version with .07 / 50 / 10 / 1.3 + baselightmass.ini changes (he said 4 hours to build)

4.11 with portals with .15 / 30 / 4 / 1 and default baselightmass.ini (26 mins to build on a single i7)

ZacD · January 6, 2016, 7:56am

Yeah that 26 minute bake looks just as good.

heartlessphil · January 6, 2016, 8:34am

The new sequencer (matinee 2.0) is pretty dope too! Can’t wait to make the transition.

mihanix · January 6, 2016, 1:38pm

&stc=1&d=1451929309

Very nice work. How to make material curtains, if not secret?

anonymous_user_4379ef411 · January 6, 2016, 2:52pm

That looks awesome Can you tell the other values as well please Is the NumHem Value the only value you tweak in the .ini? Also are you using a custom hdri or just the basic bp skysphere? How do you achieve the burned out windows in white? I dont want my hdri showing in the windows. Also would you use a big box reflection capture for the whole scene or multiple sphere reflection captures like in koolas lightroom. Other opinions welcome as well

anonymous_user_6096f04f · January 6, 2016, 3:15pm

You can add an emissive plane out the windows that does not cast a shadow to get the bright white look.