Vray GI Issue please help

[kenchen]

Hi Everyone First time posting here.

I'vegot a problem with one of my renders.

As you can see from the image my GI map has all these dark black spots everywhere.

This is a camera fly through of a bedroom/bathroom. Nothing too fancy. I've followed the basic set-up for an animation like this. I pre-baked the GI using these settings.

 

1st bounce Irradiance map

Pre-set min rate -4

max rate -1

subD 250

Interp samples 60

checked use camera path.

mode: incremental add to current map

 

2nd bounce light cache.

sub D 3200

checked show cal phase

world scale

use camera path

mode single frame

 

image sampler adaptive

min 1

max 8

threshold 0.005

 

the whole animation is 365 frames.

 

What really baffled me is i have other animations that's similar but different room with almost identical settings and they all render out fine. I did some test where I just baked out the first 10 frames of this animation and did a test render. Everything looked ok no black spots. When I go and bake out all 365 frames the black spots appear. Im using Maya 2014 vray 3.3

 

Some help would be greatly appreciated.

If i left out any information please let me know

Thanks,

[Francisco Penaloza]

Definitely you did something wrong here, hard to tell where, but from your settings I thing you are changing too many parameters that you are not sure how they works.

 

Just reset all the values of VRay, use a mediums settings for Irr, leave LC as default and you should get a better image.

Please referee the manual, and the basic tutorial that come with VRay, they'll explain with good detail how each parameter works.