v-ray mat reflections

[jccloutier]

In the chaos help section it describes a setting of 1.0 for 'refl. glossiness' as that of a mirror and lower values are less glossy/sharp.

 

In a test scene with a sphere and 2 omni lights, the lights are reflected as expected on the sphere from 0 to 0.95 but when set to 1.0 the light reflections disappear. Shouldn't they be sharpest/glossiest at 1.0? What is causing them to disappear during the change from 0.95 to 1.0? Shouldn't they produce almost identical results?

 

It does reflect objects properly, the issue is with lights.

 

[BrianKitts]

my guess would be based on the fact that an omni is more or less just an emitter with a size attenuation set to a certain size in contrast a vray light is created more to a geometrical state... when you take you're glossiness value to 1.0 the omni emitter's glow is doing a calculation on such a small source that it isn't even visible . Whereas when the gloss value is multiplying the apparent size of the emitters glow it has an appearance large enough to be visible. In contrast the vraylight will show up with a glossiness value of 1.0 because it actually has the physical size to show up. Think of it this way... you take the vraylight's diameter down to 1/10" it won't show up either in the specular reflection @ 1.0

 

attached image: omni on left / vraylight (sphere) on right.... glosiness = 1

[jccloutier]

my guess ...

 

Believe it or not I do understand. You are gentleman and scholar.

 

This is me right now:

 

[BrianKitts]

heck ya! nice GIF post.... I'll get some mileage out of that one.....

 

glad to help