Vray Lightcash problem

[jericho0131]

Hi,

 

I'm a student and started using Vray 1.47 with 3Dsmax 8 for just 1 month.

I'm trying to make an animation with a large exterior scene, but I keep getting weird results when i render.

 

My computer is Core2Duo E6600, 2GB RAM. And I rendered it with lightcache for first GI bounce.

 

First I thought it was because of lack of memory, since sometimes the application closed because of it, but even though i lowered the data, the rendering result didn't change. (managed to avoid applacation crash)

Sometimes I get the same weird results with smaller scene.

I tried 3GB option or other things to save memory but it didn't help either.

 

So next I tried to change the Gi method. Switching to QMC was totally successful but too slow. Switching to IR map was the same result (much better, though). I also changed the lightcache scale to world and was successful, but the image was not good.

 

So I'm confused with this problem.

Maybe I should go with QMC but since I don't have many computers, I'd like to render with Lighcache.

 

Somebody please help me on this.

Thanks in advanced.

 

Yosuke

[kippu]

this is definitely some raytrace materials or overbright materials .... check the vray log ...it will show the culprit materials... actually first try rendering with a default vray grey material and check it ...if that works then find out the wrong material

[jericho0131]

Thanks kippu for your advice.

 

Yes, I do have those warning messages in the log and if I overide with defaul Vray material, I get a normal result.

 

I looked into some thread about material overbright and learned to use Vray scene converter, and I did it but it didn'T change the result.

The log says like,

"Material returned overbright or Invalid color{object"box23",RGB:0.75,3.19e+17,.....} "

Or

"Invalid texture cordinates...."

Really too much of this...

 

I guess I should handle with this too.