shadow bias problem

[thieuma]

Hello,

I have a problem with the VraySun shadows on the trunk :


I first thank it was a bias problem but changing the bias on the VraySun doesn't help anything.

The tree is an imported mesh, so I tank a units problem, but a Rest X-form + collapse stack on the tree gives the same problem !
There is no GI and no other sources of light.

What is missing ?
Thanks for your help

[tashko.zashev]

Hi,

Can you post the scene file here or send it to support at chaosgroup.com?

[super gnu]

is your bump map turned up too high? it can cause issues as it warps the normals too far.

[thieuma]

Thank you for help !
It was just a problem of smoothing !
The mesh was too edgy, problem disappears with a Turbosmooth modifier. I missed that...

Anyway, thank you very much !

[tashko.zashev]

Glad to hear that you 've found solution for this.
The shadow cast by the V-Ray sun are very crisp and such results are expected with low poly objects.