Light mixer corona 1.5 .... Vray 3.5???

[Nicinus]

I already started work on this a while ago; my plan is to include it in V-Ray 3.60 or V-Ray 4.

Best regards,
Vlado

Can anyone explain this to me like if I was a 5 year old, since there is already a VrayLightSelect element, what else is needed on the rendering core side? Can't I use these render elements and get the same effect in a 32-bit compositing tool?

[vlado]

The current implementation of the light select does not include indirect contributions of lights (reflections, GI, refractions etc). While there are tricks to get reflections and refractions, there is nothing for GI.

Best regards,
Vlado

[Nicinus]

Ok, so the implication above in the thread that somehow using Lightselect together PDplayer to get this functionality is incorrect then.

I'm fine with doing the compositing externally (PSD manager would probably pick this up quickly) until your new VFB is ready in a year, but when you say you are hoping to get it into 3.6 or 4, does that imply that there will be a 3.6 no matter what, or that you may go straight to calling the next update after 3.5 4 instead? Just trying to get an idea of the time scope.

When I think about it, my main reason for using RT is really to balance lights so this could certainly be significant.

[vlado]

I'm fine with doing the compositing externally (PSD manager would probably pick this up quickly) until your new VFB is ready in a year, but when you say you are hoping to get it into 3.6 or 4, does that imply that there will be a 3.6 no matter what, or that you may go straight to calling the next update after 3.5 4 instead? Just trying to get an idea of the time scope.

The new VFB is planned for V-Ray 4. The full light select is currently planned for V-Ray 3.60.

Best regards,
Vlado

[gregvfx]

Very good news!

[dlparisi]

The new VFB is planned for V-Ray 4. The full light select is currently planned for V-Ray 3.60.

Best regards,
Vlado

Thanks for being up front about this and not teasing it with a "coming soon" or "future". Even if it doesn't happen exactly then due to unforeseen difficulties I appreciate it. I'm sure there would be people screaming about it being "promised" for 3.6, 4.0, etc but please ignore them.

[Sbrusse]

With the full light select being (in theory) done for 3.6 will there be a light mixer planner for 4.0 integrated with the new VFB? In theory again

[vlado]

With the full light select being (in theory) done for 3.6 will there be a light mixer planner for 4.0 integrated with the new VFB? In theory again

The new VFB has a compositing engine that allows you to mix render elements, where each element with its own color corrections. So yes, you could mix the light selects right inside the VFB.

Best regards,
Vlado

[snivlem]

That. Would. Be. Awesome!

[Sbrusse]

The new VFB has a compositing engine that allows you to mix render elements, where each element with its own color corrections. So yes, you could mix the light selects right inside the VFB. Best regards, Vlado

Will there be some sort of "commit" button that apply the changes done from the vfb to the lights in the scene so the next render will reflect the changes that where done previously in that light mixer? That way we will have proper noise and aliasing across the render, plus we would not need to re-comp the elements again after.

[gregvfx]

we are doing a lot of 3D mapping on buildings so having "selected" render elements denoised and specifically a proper light select would be a must.
the possibility to tweak the pace of On and Off lights in sync with the soundtrack in post, without rerendering would save a lot of render time. Right now we are doing light passes "manually" and it takes very long to render...
the option to push back to the scene the tweaks done in vfb is not essential but would be a very welcome addition.

Thx Vray!

[mohammadreza_mohseni]

Great Frame Buffer. thanks, Vlado and Chaos Group developers. awesome
it would be great if frame buffer actually has bake button for LUT as well it make a whole lot easier to do this inside frame buffer and not shot by shot in post for still renders.

[jasonhuang1115]

Some videos/links of how other renderers trying or doing their ver. of light mixer. Hopefully provide some food for thoughts for devs and UI designers to cook up how in the near future V-Ray light mixer could be during interactive rendering or in post via the new VFB.

The 3Delight one in Katana is pretty cool I think.

Light Mixer in 3Delight for Katana: https://vimeo.com/174603702

Maxwell Multilight Standaone: https://vimeo.com/178167077

Arnold alshaders LightGroup AOV (limit of 8 groups?): https://vimeo.com/125999374

Corona LightMix: https://www.youtube.com/watch?v=AnA_gSDnSQE

Iray LPE: https://vimeo.com/86594869

PRMan LPE: https://renderman.pixar.com/resource...n/risLPEs.html

[vlado]

Thanks, but I'm actually quite well aware of all of these

Best regards,
Vlado

[jasonhuang1115]

Thanks, but I'm actually quite well aware of all of these

Best regards,
Vlado

Awesome, Vlado!