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***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Fri Jan 27, 2012 4:42 pm
by gabrielefx
Hi Refractive team,

hi found a bad bug in the Octane for Max accuracy

Octane for Max doesn't respect the 3ds Max accuracy, check yourself with the accuracy calculator.

The conclusion is that if you have a room distant 50 meters from the origin you have to move every time your scene on the origin because Octane will render triangles with gaps and black areas.

I've posted here some examples and the Max scene.
This scene is drawn in centimeters and if you merge it in a new scene setting the units in meters you will get the same results.

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Fri Jan 27, 2012 4:48 pm
by t_3
why did you attach a photo at the bottom? proves that nature has some bugs too?
scnr ;)
you'r renderings amaze me every time. perfect down to the detail, like pieces showing weld lines...

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Fri Jan 27, 2012 7:09 pm
by pixelrush
You have sharp eyes to notice, I was too busy looking at your nice picture... 8-)
Doesnt seem like it would be too serious until 100m radius, I guess, still that's good to know, a few of my scenes have been 25m away, but they are nothing like your standard, so it wouldnt have mattered anyway. :roll:
Lucky we have you, with your attention to detail, finding these things for us. :)

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Fri Jan 27, 2012 9:29 pm
by Karba
gabrielefx wrote:Hi Refractive team,

hi found a bad bug in the Octane for Max accuracy

Octane for Max doesn't respect the 3ds Max accuracy, check yourself with the accuracy calculator.

The conclusion is that if you have a room distant 50 meters from the origin you have to move every time your scene on the origin because Octane will render triangles with gaps and black areas.

I've posted here some examples and the Max scene.
This scene is drawn in centimeters and if you merge it in a new scene setting the units in meters you will get the same results.
Can you try to increase rayepsilon?

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Fri Jan 27, 2012 10:46 pm
by gabrielefx
Karba wrote:
gabrielefx wrote:Hi Refractive team,

hi found a bad bug in the Octane for Max accuracy

Octane for Max doesn't respect the 3ds Max accuracy, check yourself with the accuracy calculator.

The conclusion is that if you have a room distant 50 meters from the origin you have to move every time your scene on the origin because Octane will render triangles with gaps and black areas.

I've posted here some examples and the Max scene.
This scene is drawn in centimeters and if you merge it in a new scene setting the units in meters you will get the same results.
Can you try to increase rayepsilon?
obviously yes, it doesn't help.

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Mon Jan 30, 2012 7:22 am
by mbetke
Almo Nature - very good cat food. :)

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Mon Jan 30, 2012 9:43 pm
by hadouken
This isn't so much an octane thing as much as the nature of 3d apps. The farther you work from the point of origin, the less accurate the system will run. The same thing happens in max. This is why choosing the correct unit scale for your scene is really important. You might want to change to inches, although doing this mid-workflow is never a good idea.

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Tue Jan 31, 2012 3:14 am
by roeland
Yes, this is a problem with reduced precision. I have looked at it and it seems to be worse than in 2.52, so the new geometry processing introduced in 2.55 is probably less precise than the previous system.

--
Roeland

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Tue Jan 31, 2012 4:03 am
by siriolsd666
Yes, a real problem! :cry: :cry: :cry:

Re: ***BAD BUG (Octane accuracy)...PAY ATTENTION!***

Posted: Tue Jan 31, 2012 4:36 am
by Karba
siriolsd666 wrote:Yes, a real problem! :cry: :cry: :cry:
This is not a problem. You have to work with proper unit scale.