OTOY Forums

Hi,

I have a model where with default rayepsilon some faces are completely black

If I increase rayepsilon then they become right.

Can someone explain why? Which other side-effect can have increasing rayepsilon value?

Thanks

areyal wrote:Hi,

I have a model where with default rayepsilon some faces are completely black

If I increase rayepsilon then they become right.

Can someone explain why? Which other side-effect can have increasing rayepsilon value?

Thanks

If you have to increase the ray epsilon, your scene got exported too large.

The ray epsilon hides numerical errors, but can introduce incorrect shading and reflections, if it's too large (usually 2-3 magnitudes larger than it should be). A good rule of thumb: Try to minimize the ray epsilon as much as possible as long as you don't see artifacts. Then it's about right and there is still a lot of margin above.

Cheers,
Marcus