Domelight - exclude doesn't work

[LarsSonparsson]

If I try to exclude or include objects for vray light when the mode is dome,
it has no effect. Everything is lighten.

I'm using sp3, but I don't think that's the problem.

-LarsSon

[duke2]

I too have the same problem and using SP3 - so that's possibly the issue!

[LarsSonparsson]

Ok. Thanks for confirmation.
Maybe later version works already.

-LarsSon

[vlado]

Do you use GI also?

Best regards,
Vlado

[LarsSonparsson]

It doesn't matter do I use GI or not. Dome light was invisible.
I also tried to make it affecting diffuse only.

I tried to do even lighting to environment objects. Then those are
used as matte objects visible in reflections only.

[vlado]

Worked fine for me on a simple test... if you have a scene where it does not work, please send to vlado@chaosgroup.com

Best regards,
Vlado

[LarsSonparsson]

Thanks. I'll send you scene later today.

[LarsSonparsson]

Okay, it happens only when gi on. ir+lc.
So dome light is affecting gi to all objects even when it's invisible and
included to some objects only.

I can send test scene later if still needed, but I think this is easily redone.

-LarsSon

[RErender]

The dome light is a Skylight when GI is enabled, no way to exclude objects, not a bug it's a feature. You could however turn the GI receive to zero for the object you want to exclude.

[LarsSonparsson]

Thanks.

Well, maybe I have too tricky situation.
I need to light environment objects so that they can cast GI to "main object.
So I thought easiest way to light environment objects is dome light without shadows.
When it didn't work, I tried to use omni lights in ambient only mode. Those
doesn't work with Vray.

So what could be the best way to light environment in away that:
-is included in environment objects only
-won't be visible in gi or any other way to other objects
-gives even lighting to environment objects

-LarsSon

[RErender]

Not sure I understand exactly what you are trying to do, do the environment objects have bitmap textures? If so maybe set self illuminate to 100 and set generate GI to zero? Maybe post a screen cap of the setup?

[LarsSonparsson]

We are doing fx-shots where 3D-robot is going around supermarket.
We have done rough model and textures that match the background plate.
This is how we get perfect reflections and gi lighting from environment to robot.
I don't want to relight the environment because those textures have
lighting situation already.
Self illumination could work, but if I want to change
environment brightness afterward, it's too much job to adjust 20-30 materials.
So I thought if one light can light the environment objects, that's the easiest
way to have fast control. With VRay GI on I can't do that.
-Dome light is used as Sky light when gi on (lighting all objects)
-omni lights in ambient mode does not work

Now I have placed omni lights around the scene. They give almost enough even
light to environment objects.

It's not a big problem. I just didn't found perfect solution to this.


-LarsSon

[RErender]

ah ic , if it were me I'd probably use self illumination, run a reflection pass and adjust it in post. Sounds like a fun shot.