rt gpu and lightselect, includes GI contribution?!

[super gnu]

last i checked, lightselect only deals with the direct light contribution of a given light.

however ive just added it to an rt gpu render im doing, and it seems im getting the gi contribution of the light in the element too?

is that correct?

[savage309]

Yes, that is correct and is better compared to the CPU.
For example, you can render each light in separate LightSelect render element and after that when you combine those in post you will get the beauty pass. The good thing is that you can turn off lights in post by removing any of the elements, change colors, intensity by altering the render element, etc. The result image will be correct and exact to if you re-render with the light changed.
You can also combine multiple lights into one LightSelect render element. The LightSelect render element has few options (at least in Maya, I have to check in Max) to include only specific light contributions.

[super gnu]

thats really cool! i remember when lightselect first appeared, and everybody was dissapointed that you could not use it to properly relight a scene ala maxwell.

turns out, with RT you can! i missed the part where you guys made a big noise about this feature.



future feature idea...a relight rollout in the vfb (specific to RT if necessary) with a slider for each light in the scene.

[savage309]

Having them all the time is probably not good for everybody, since not everybody uses them. But yes, we can make UI button that automatically adds one LightSelect render element for each light in the scene.

[Sbrusse]

Nice!
I think he was referring to having slider for each multilight element a la multilight of maxwell.

I wasn't aware that the light select was updated to include GI. Even the secondary GI contribution from LC?
What about reflection and refraction info?

[savage309]

Nice! I think he was referring to having slider for each multilight element a la multilight of maxwell. I wasn't aware that the light select was updated to include GI. Even the secondary GI contribution from LC? What about reflection and refraction info?

Yes it has all the rays, so adding them together gives you the beauty pass and adjusting them gives the right result even for reflection and refraction.
It does not work with LC.