Vray Light Select Bug ?

[bernhard]

if you want to use the VrayLightSelect Render Pass... and if you want to make sure that if you change the Color of a selected light in post... that the color change will also take effect in the

- Reflection and
- Refraction

How the heck do you use it then ?

First I thought there might be a bug .. but now I can tell, that it's all about the settings of the lights.
Menaing, Difuse, Raw, Spec, or normal.

If I set the light to normal, I have am also changing automatically the color of the Spec pass... it's baked in.
But I am not able to control the Reflection or Refraction separated.

Really wondering how you handle that ?

[Moriah]

From what i understand, you want to have the control of the diffuse and spec pass separately for a certain light? If so, you have to do 2 light select passes for the same light, one in diffuse mode, the other in spec mode, and comp it together. At least that's what i do when i need that kind of control.

[bernhard]

Hmmm.. the problem is
- Refraction
- Reflection

Made this short video to better explain:
https://youtu.be/AL6IU6vSSSA

[vlado]

You can make the reflective and refractive materials propagate all render elements and then it will be possible to adjust the light color in reflections/refractions as well.

Best regards,
Vlado

[bernhard]

hmmm.. propagate... can't follow you vlado... you mean, making sure I do have for each light all 4 render passes ? Normal, Raw, Diffuse, and Spec ?
if you have any short video tut or page explaining it in more detail... that would rock !

like always.. thx a lot and keep rocking !

[vlado]

In the VRayMtl material, there are options "Affect channels" for reflections and refractions. Set those to "All channels" to make the materials reflect/refract other render elements as well, including the light select.

Best regards,
Vlado