Please help!!

[ReNdEr3D]

Why i become this artifacts?

Sorry for my bad english

Thanks

[natty]

is that an extruded spline that you have self illuminated ?
rather than attaching the material to the whole object ... just attach it to just the face ..... then you will not get that bleeding (hopefully)
welcome to the forum by the way

[Gijs]

I think it has to do with low irradiance settings combined with high light multipliers (if these are vray lights ?)

Gijs

[natty]

it could also be your lights intersecting the ceiling

[Palee]

Some settings?
We could say more about your problem...
But I think you have very low irradmap rates...

[losbellos]

you can also try "check sample visibility" in the advanced imap settings

[ReNdEr3D]

Thank you for your quick answer.

The illumination is a exterior direct light mult. 2,5 and a exterior Vraylight in the south windows mult. 1. The mesh is totally fact in AutoCad

Excuse for my poor english.

[Da_elf]

usually i just use the same settings in almost all my stuff as defaut then tweek from here

min/max = -3/0
clr thresh 0.3
nrm thresh 0.3
disk thresh 0.3
Hsph. Subdiv 60
interp samples 60
i try never to go over 1 in my bounce multipliers and
try not to use 1 for your secondary bounce. 0.75 is usually nice.

Plus i usually use adaptive AA

[Josele]

To reduce the artifacts arround holes, try to set GI environment multiplies above 1 and up the Dark multiplier in the color mapping menu.

The floor reflection is a glossy probrem. try to up the mat. refl. subdivision

Are you using Vray Mats?

Bye from Córdoba

[ReNdEr3D]

Thank's Josele, yes all materials in the scene are Vray Mats,
I will apply your suggestions now and shortly post the result.

[natty]

i was just wondering because i have seen the same on my own render ....
are they self illuminated boxes in the holes ?

[ReNdEr3D]

Hi natty

They are not holes, they are self illuminated (material) boxes hit to the ceiling.
In the new render it seems that the problem of the boxes has been corrected thanks to your suggestions but it takes in the first prepass 2 hours and he still has left

Excuse for my poor english.

[doriziofilho]

only uncheked visibility in vray lights...

[natty]

it is the Illuminaited bits that is doing it ... ive seen it many times before ... im sure.

[ReNdEr3D]

Now it has finished the first prepass after 2 hours, and they still lack 3, I believe that the values min/max = -3/0 for a 3200 pixels image are too high,
but I will wait even this way.. my god gives me patience

I am thinking aloud should the irradiancemap of this image (360 degree solution) be theoretically valid for the same camera
without changing focal opening neither location, although changes the position, not?