White dot on IRmap pass

[fraggle]

Hello,
What's the meaning of white dot visible during the IRmap pass?
Does it means that the LC was not good enough?



Thanks

[zeronove]

do you have LC for glossy checked?

[fraggle]

yes, to speed up the rendering.

[zeronove]

then similar issue happens here when we have any bump map with high values and strong light source (ex. sun)
just to nail the issue try a region render with glossy effect unchecked (global switches panel)

[tashko.zashev]

You can also post here or send to support part of the scene for further troubleshoot.

[fraggle]

thanks,
Yes there is a direct sun entering in the room.
Seems that there is no issue while rendering, but I will check without glossy effect turn Off.

[vlado]

What's the meaning of white dot visible during the IRmap pass?

It's probably a reflection ray; during the irradiance map pass, V-Ray calculates glossy reflections and direct illumination at really low settings (they are not needed for the irradiance map), so this may be normal for your scene.

Does it means that the LC was not good enough?

Nope. The rendering should be fine.

Best regards,
Vlado

[zeronove]

It's probably a reflection ray; during the irradiance map pass, V-Ray calculates glossy reflections and direct illumination at really low settings (they are not needed for the irradiance map), so this may be normal for your scene. Nope. The rendering should be fine. Best regards, Vlado

Ops, never know about reflection being calculated during IM; could you elaborate a bit about it? Ex. What's the scope?

[vlado]

Ops, never know about reflection being calculated during IM; could you elaborate a bit about it? Ex. What's the scope?

Well, V-Ray needs to calculate the irradiance map also for objects that are seen in reflections and refractions - f.e. you may have a mirror reflecting something behind the camera. Which is why V-Ray also traces reflections/refractions in order to check what surfaces are visible and to compute the irradiance map for those surfaces as well. It's not needed to compute those reflections/refractions to the same precision as a final render, V-Ray just needs to trace a few rays to see what happens.

Best regards,
Vlado