Architectural viz - closed

Posiadala · Post by **Posiadala** » Sun Jan 06, 2008 12:46 am

Hi everyone
I've baked this one:

By kamilp

My employer wont me to add some volumetric lights from sun. I can't achive good efects about that. I've tried placing up all building in box witch paricipating media material, but it just coused fog in scene, but no volume light.
Any advices?
THX in Advance.

dougal2 · Post by **dougal2** » Sun Jan 06, 2008 12:48 am

You did the right thing, except you need to lower the scattering value. You only need very little scattering to get subtle sun rays.
Try dividing your scattering value by 100,250 or 1000.

Kram1032 · Post by **Kram1032** » Sun Jan 06, 2008 1:28 am

O.o I don't see any scattering xD

Behrendt · Post by **Behrendt** » Sun Jan 06, 2008 1:53 am

Maybe because it's the version without participating media?

Posiadala · Post by **Posiadala** » Sun Jan 06, 2008 2:07 am

THX for quick reply, I'm working on it. I'll post results later. And yes, there is no media on posted picture.

Posiadala · Post by **Posiadala** » Sun Jan 06, 2008 5:17 am

ok, so here is first render: sssColor R=G=B=0,014, gain=10

By kamilp

it is too foggy, so next is: sssColor R=G=B=0,007, gain=10

By kamilp

it's less foggy, but still no visible volumetric light. What am I doing wrong??

dougal2 · Post by **dougal2** » Sun Jan 06, 2008 5:21 am

the second one looks about right. I can see streaks coming down through the middle of the picure. Just let it cook longer.

Posiadala · Post by **Posiadala** » Sun Jan 06, 2008 5:48 am

thx dougal2, I'll let it run all today night, and post restults tomorrow.

BbB · Post by **BbB** » Sun Jan 06, 2008 6:08 am

Yes you need a long time for those rays to appear. The "fog" also dissipates a bit after a while as the details sharpen.
Beautiful scene by the way. Amazing!

Posiadala · Post by **Posiadala** » Sun Jan 06, 2008 11:41 am

Thx BbB. I'm a silent admirer of Your works on this forum, so I'm very glad You like It.

Before setting up render for night I've made one more:

this time sssColor is R=G=B=0.005. It baked for 5h, and no streaks appeard.
So for night render I'm getting back to 0.007. Hope it will work

btw: does the IOR of my participating media matters for streaks to appear? And what is atmospheric media type for?

dougal2 · Post by **dougal2** » Sun Jan 06, 2008 11:54 am

IOR should remain at 1.0 for atmospheric scattering.
I'm not sure what you mean by atmospheric media type.

Posiadala · Post by **Posiadala** » Sun Jan 06, 2008 12:39 pm

in blendigo there is a combo box titled Medium type ( specular material ), contains options:basic ( I'm using it currently for volumetric effect ), dermis, epidermis and atmosphere.

Kram1032 · Post by **Kram1032** » Sun Jan 06, 2008 12:40 pm

I can see first rays

Patience, young Padawan ^^
Well, anyway ^^
the atmospheric media is for a different, more complex but also far slower sky system. It's not useful, in this case, because
1) It'd take more than ages (longer than a week, under circumstances)
2) The scattering is very very weak. It's scattering as strong as real air, which means, it only visible over extreme distances

safely ignore it, for now.

dougal2 · Post by **dougal2** » Sun Jan 06, 2008 12:54 pm

kram, do you know the XML, or where the reference is for this feature ?

GODDAMIT ONO WHERE'S THIS UPDATED MANUAL ?

Kram1032 · Post by **Kram1032** » Sun Jan 06, 2008 12:57 pm

In the clouds-thread and also scattered in other threads, all over the forum, sadly

Did you notice? Ono didn't reply to anything since a few days...
And he also is/wasn't in the IRC...

Three possibilities:

He makes a break
He'll *BOOM* surprise us with something amazing and entirely unexpected
He stopped development O.o

Architectural viz - closed

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