Only one irradiance map pass ... ?!

[AltoR]

Hi,

I recently face a simple but annoying problem with the last scene I am working on: although I set Irradiance map Min/max rate to -5 / -2, VRay calculates only one prepass ...
I can't figure out why: does anyone have an idea ?

Thank you

[Companioncube]

is 'multipass' unchecked in the 'advanced options' of the irradiance map?

[AltoR]

No it is checked:

[Pixelcon]

Is distributed rendering turned on in the settings tab?

[AltoR]

Yes it is.

[svetlozar.draganov]

When DR is active IM is calculated in a single pass.

[AltoR]

I didn't know that, thank you.
How does it work ? Let's say I set Min Max rate to -5 /-2 for the IM and I turn On DR. IM will be calculated in one pass with a rate of -5 ? -2 ? I am curious to learn more about that.

[vlado]

IM will be calculated in one pass with a rate of -5 ? -2 ? I am curious to learn more about that.

Yes - each bucket will do its own prepasses.

Best regards,
Vlado

[AltoR]

OK so can you please confirm that calculating a -5/-2 non DR IM will give the same result as calculating a -5/-2 DR IM ?

[vlado]

OK so can you please confirm that calculating a -5/-2 non DR IM will give the same result as calculating a -5/-2 DR IM ?

It will be very similar, yes.

Best regards,
Vlado

[AltoR]

Thank you.