render elements documentation

[chuckie7413]

Hi all,

I wanted to know if there is any more documentation regarding the render elements. I am keen to know more about the Light Select render element.

I have looked at the docs for 3d max and they contain a bit more information than the maya render elements docs but nothing on the above elements.

I search the forums but only found a post from quite a few months ago asking for more documentation on render elements and a post from Vlado about the Light Select render element when he was just implementing it. But not really detailed way of using it.

Many thanks,

Richard

[jasonhuang1115]

Hi, Richard,

AFAIK, the RE_Light_Select let you extract the "direct" lighting contribution on a per-light basis. i.e. if you got a scene with a sphere and two lights, then the Beauty = RE_Light_Select one + RE_Light_Select_B + GI. Currently, the indirect lighting contribution cannot be isolated on a per-light basis. Actually, if you do a research on "light select" or multilight on all forums (not just the Maya ones), you should be able to find quite some discussions and requests regarding a Light_Select render element that can be used as Maxwell's multi-light feature. Hope to see this coming in future releases of Vray.

To use it, simply create the RE_Light_Select (as many as you wish). The created RE_Light_Select will be shown in the outliner. Then drag the light(s) onto the RE_Light_Select you want it(them) to be associated with. Alternatively, you can associate the light(s) and RE_Light_Select through the set relationship editor. It's pretty straight forward once you get a hang of it.

Btw, you can choose to only extract the diffuse or specular components of the RE_Light_Select.

cheers,
Jason

[chuckie7413]

Thanks Jason for the info. Will try it out now.

Best,

Richard

[chuckie7413]

this works really nicely and it works for geometry lights (VrayMeshLights) which is great.

is it possible to get this working for geometry that just has a lightMtl attached to it?

thanks,

rich

[Zdravko]

We added your request to our "to do" list.

[sharktacos]

I set this up (as described above in post #2) and it appears black in the VFB. What am I missing?

[vlado]

What kind of lights are you using?

Best regards,
Vlado

[sharktacos]

They were Maya directional lights.

[ivaylo.ivanov]

I think directional lights were not supported in SP1. Get a nightly build.

[Yannick]

Sorry to revive this thread on light select.
is suppose to only show the diffuse from the light? Could we also have the reflection.
I have a light on a side of a car, which doesn't appear the lights on the car (which is made of chrome and glass) as it doesn't have any diffuse.

Thanks,

Yannick

[chuckie7413]

+1 on that request

Cheers,

Rich

[vlado]

Yep, this will be done.

Best regards,
Vlado

[Yannick]

Excellent!
Thanks.

Yannick