Light select pass

[thanulee]

Hi. Is there any chance to add light select passes, so that the beauty can be composited only with them? Im not sure if i express it well. Right now the light select pass doesnt respond to gi or reflections/refraction, even if turn the light down cant get rid of it in reflections or doesnt contribute to the gi.

If we had light passes that are like a state set, burned on the gi and reflections so we can complete relight a scene in post would be awesome This is very useful for many cases. thank u very much.

[jasonhuang1115]

believe we are getting closer and closer to that if I remember Vlado's many comments on this correctly...

[Alex_M]

No, you can't create the beauty pass with just light select render elements. Light select only shows the diffuse light, it doesn't include GI, reflections, refractions, Specular, SSS etc. So I wouldn't use light select render elements to do a real light mixing similar to Corona and Maxwell.

What you can do is render your image many times and each time you turn on only the lights that you want to control separately. Then you can overlay these renders in your favorite compositing software with ADD blending mode and increase/decrease the strength of the different rendered images to your liking. Doing it the way I described is obviously more time consuming as you have to render your image more than once but you have the real contribution of light for each separate light (Diffuse, GI, Reflection, Refraction, Specular, SSS etc.).

For example if you have a room with a sun shining through the window + a vray plane light (which mimics the sky light), you will have to render the image twice - once with just the sun light turned on, and then once with just the vray plane light in the window turned on.

Hopefully Vlado and team will introduce a real light mixing feature soon.

[crazy homeless guy]

What you can do is render your image many times and each time you turn on only the lights that you want to control separately. Then you can overlay these renders in your favorite compositing software with ADD blending mode and increase/decrease the strength of the different rendered images to your liking. Doing it the way I described is obviously more time consuming as you have to render your image more than once but you have the real contribution of light for each separate light (Diffuse, GI, Reflection, Refraction, Specular, SSS etc.).

You actually do this? If you decide to do something as simple as move a chair do you then need to re-render all of those passes manually?

[thanulee]

No, you can't create the beauty pass with just light select render elements. Light select only shows the diffuse light, it doesn't include GI, reflections, refractions, Specular, SSS etc. So I wouldn't use light select render elements to do a real light mixing similar to Corona and Maxwell.

What you can do is render your image many times and each time you turn on only the lights that you want to control separately. Then you can overlay these renders in your favorite compositing software with ADD blending mode and increase/decrease the strength of the different rendered images to your liking. Doing it the way I described is obviously more time consuming as you have to render your image more than once but you have the real contribution of light for each separate light (Diffuse, GI, Reflection, Refraction, Specular, SSS etc.).

For example if you have a room with a sun shining through the window + a vray plane light (which mimics the sky light), you will have to render the image twice - once with just the sun light turned on, and then once with just the vray plane light in the window turned on.

Hopefully Vlado and team will introduce a real light mixing feature soon.

I know, that is what im asking, in octane works like t his. I never said u can use light select, i said we need a true light select pass

[Laserschwert]

Yeah, Vlado talked about this in this thread (where I requested this feature in a much more convoluted way than you did ):
http://forums.chaosgroup.com/showthr...tSelectGI-quot

In short: It's planned for V-Ray 3.6 next year.

[thanulee]

Yeah, Vlado talked about this in this thread (where I requested this feature in a much more convoluted way than you did ):
http://forums.chaosgroup.com/showthr...tSelectGI-quot

In short: It's planned for V-Ray 3.6 next year.

Oh so the default light select will have the option for now if u wanna include gi/refle ?! Awesome All i need i dont care for light mixer cheers

[vlado]

Oh so the default light select will have the option for now if u wanna include gi/refle ?!

That's the idea, yes.

Best regards,
Vlado

[thanulee]

Hey Vlado is this feature now in 3.5 release? Can i have refle/refract/gi in light select passes? thanks!

[vlado]

As I said earlier, it will probably come in 3.6

Best regards,
Vlado

[thanulee]

Ahhh my bad misread out of joy thanks for the reply