Vray Sun system

[Drawehn]

It would be great to have a Vray sun system like the Max sunlight system where you can specify North, a time, day and location and get the correct sun position.

[Codi]

I think you can already do it using a daylight system. Create a daylight system and choose VRaySun from the Sunlight dropdown.

[vlado]

Yep, you can already plug the VRaySun into the 3ds Max Daylight system.

Best regards,
Vlado

[Sawyer]

Turn the max daylight off, link the 2 together and then you can use all the controls of the max system even animate it and it will change the vray sun.

[Drawehn]

Great! Thanks.

[trixian]

Would it be possible to choose a vray domelight as a sky light in the daylight system? right now you have to disable the skylight that is there and add your own separately. Mentalray has one built in, why not Vray?

[gavinwhelan3d]

cut and paste the vray sky map from the environment map slot to a vray dome light texture slot.
i think thats what you were asking.

[trixian]

No, I was explaining that the daylight system comes with a premade MR dome light for sky illumination, but not a vray domelight, yet the sun has a vray sun in its dropdown list.
This is regardless of what map one chooses to use, though logically one would use the vraysky map in these cases, so it should be there as default preferably.
So basically, it would be "better" and "easier" (more streamlined) than building one separately and assigning a vraysky map.

[max montana]

Turn the max daylight off, link the 2 together and then you can use all the controls of the max system even animate it and it will change the vray sun.

what do you mean with "link the 2 together"?
when i choose vraysun as sunlight in the daylight system, i am asked if i want to create a vraysky, aren`t vraysun, vraysky and daylight system linked from that moment?

[sv]

trixian; i'm with you.... I agree.
It would be nice to have the 'sunlight' as a Vraydome light option with the VraySky instanced to the dome light.

[^Lele^]

Why would you put a skymap in a dome?
My thoughts were that the one very good thing of the domelight is importance sampling (ie. finding the brightest spots in an hdri map to favour sampling those).
Whereas the skymap has the brightest spot where the sun is.
I would expect to see no difference whatsoever in quality or speed between a render with a 1 bounce brute force GI (no secondaries) with the sky as BG map, and an IBL render with the sky in the domelight.
Am i replying off-topic here, or did i get the wish right?

Edit: in fact, the sky in the (full) dome, for 8 subdivs, is slightly faster, at the expense of more noise, compared to the brute force primary-only GI. I don't know if it's me, but the IBL is also slightly darker in the shadowed areas. It bears the question if IBL is using the same sampling settings as the brute force GI, or even worse (for me XD) if IBL can be compared to a 1bounce brute force GI at all
Edit n.2 : Vlado replied here http://www.chaosgroup.com/forums/vbu...20&postcount=2

[vlado]

It bears the question if IBL is using the same sampling settings as the brute force GI, or even worse (for me XD) if IBL can be compared to a 1bounce brute force GI at all

They are not the same with respect to color bleeding. GI, even with one bounce, will produce color bleeding from directly lit objects. The dome light only produces environment lighting. See the attachments below of the difference - the dome light only image is visibly darker because it is missing the color bleeding from the direct light (however the environment lighting is still the same).

Best regards,
Vlado

[^Lele^]

Yes indeed, schooled!

Thanks so very much Vlado.