Occlsuion not really smooth...can see poly edges

[ultrasonic]

My occlusion renders always look like the vertexnormals are ignored,as you can see here...


Is there a trick that i don't know,or is this a bug?

cheers
Oli

[waaazoo]

happens to me also sometimes, not sure why....

[vlado]

It may be normal; interpolated normals don't always hide the underlying geometry. For now, you can try a different distribution value, but it may be a good idea to add a threshold to ignore rays close to the surface.

Best regards,
Vlado

[ultrasonic]

OMG! I never noticed that distribution attribute....it does what i am after......puh! made my day.......for now!

It maybe a good idea to set the distribution default to 1.0 since i suppose nobody wants to see edges in the occlusion.

[vlado]

Ah, well, it is 1.0 by default in the 3ds Max version Will make a note to make it so for the Maya one as well.

Best regards,
Vlado

[ultrasonic]

I also sometimes see artifacts like the one described above in my reflection render elements...could this be a similar issue? It only happens with blurred reflections...is there maybe an attribute that i need to adjust in the VrayMtl?

cheers
Oliver

[vlado]

In newer builds there is an option "Fix dark glossy edges" in VRayMtl; it may help (but then again, it may not; depends on what causes the issue).

Best regards,
Vlado

[michae]

Is there a double sided option when rendering ao for single sided geo? For example I have pages in a book they ao looks fine but once they turn a page and you see the other side with the normals facing the other direction it becomes black.

[vlado]

Not for the moment, but it is somewhere on the "to do" list.

Best regards,
Vlado

[ultrasonic]

Is there a double sided option when rendering ao for single sided geo? For example I have pages in a book they ao looks fine but once they turn a page and you see the other side with the normals facing the other direction it becomes black.

That's simple....just take a condition node...a sampler info and 2 VrayDirt nodes....

sampleinfo.flippedNormal into condition if true plug in the Vray Dirt node with "invert normal" ON and inside the wring condition plug the standard VrayDirt Node.