spec disappear in reflection when glossiness isn't set to 1 - bug ?

[fabien Guiliani]

Hello
I can't get highlights on reflect objects if the reflective objects is not 100% glossy.
wall glossiness set to 1

wall glossiness set to 0.999


I use point lights and VRayMLT.
I get the same thing with a Blinn material, but if I render with MayaSoftware or Mental highlights are here.

The workaround I use is to replace point lights with VraySphereLights. I get reflection of the reflection contribution of lights but not their specular contribution.
The limit of this workaround is to denoise the reflection of a reflection with small powerfull lights.

I think I need to reflect specular, I don't know if it's a bug or if there is a method to get it.

[vlado]

Turn on "reflective GI caustics"; if you don't use GI, then just enable it for a moment, change the option, and then disable it.

Best regards,
Vlado

[fabien Guiliani]

Yes ! Thank a lot Vlado !