Dirt map/AO only producing lines

V-Ray V-Ray for Rhino General
1

Hi ya

I can’t get AO or dirt map working effectively.

It’s obviously working because when I add it as an extra texture-dirt map then I get a thin line around the bottom of objects but that’s all. I’ve attached some renders to show. I played with the sliders and just get a darker line but no shadowy corners. Also played with exposure but get the same, material override on or off - get the same

Thanks

Extra texture with Dirt map. Rad 5 Dis 4.png
Extra texture with Dirt map. Rad 5 Dis 4.png943×530 11.4 KB

.png.jpg
.png.jpg943×530 62.2 KB

2

Hi,

Could you please use the Dir command to check the normals of the geometry and flip them if necessary?

3

@shapebubble Maybe it helps to find a solution if you post a screenshot of your dirt setup and where you place it. Is the radius large enough?

4

Hi Micha

Yeah I added so I have it as an extra layer for post production but if just turn on AO I get the same effect. I don’t really want to have to add AO to every layer I would rather it just worked as it should. I’ve followed the tutorials I have found and simple don’t get the same results, just a strong black line.

Thanks

5

If you work in mm than you get 10mm dirt effects only at the moment. Also you use fallof 0 and maybe this cause a focused effect. So, the AO could be looking like a black line. I think, it’s a question of adjustment only. For example I would try radius 100 and falloff 1.

6

Great, thanks Micha that seems to be getting results now :slight_smile: