Texture Filtering - different results between 2012 & 2013

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Old 12 December 2012   #1
Texture Filtering - different results between 2012 & 2013

Hello community,
I have a weirdness going on in one of my projects, which I would like to share and maybe there´s a solution for this.
I have to render a tablecloth scene and in one of the recent renders, I realized that there was some blurriness going on on the tablecloth. First I thought it was caused by a compression and file incompatibility of Maya 2013 (the project was started with 2011 then went thru 2012 and now is on 2013), but after a bit testing I found out that it was the version of Maya causing this issue.
Same scene rendered in 2012 came out fine, no matter if it was viewport or command line.
It also seems to be a fact that the angle of the cam to the geometry is relevant. Changing that, eliminates the effect. Same for filtering type. If turned off, it will look ok. But I can´t do that for all cases since turned off filtering causes moiré in some patterns.
So it seems there has been something changed in the texture filtering. Maybe anyone out there has encountered similar stuff ??
Thanks for reading.

(Please right click and view the image in full resolution to see the effect)

Cheers Duke

Old 12 December 2012   #2
No one interested or seen anything like this before??
Cheers Duke

Old 12 December 2012   #3
I just don't think a lot of people use quadratic filtering. I personally use 0.2 mipmap for all my filtering needs.
"No, the movement is good, it just has to travel faster from spot A to spot B in the same amount of time."
Old 12 December 2012   #4
Interestingly in 2012 the effect appears in Mipmap aswell. Im right now testing the other ones as well. Really weired.


It seems that Mipmap is the only one causing this issue also in 2012. All the others seem to work "fine".
Who the hell knows whats wrong of fine....
Cheers Duke


Last edited by THExDUKE : 12 December 2012 at 02:18 PM.
Old 12 December 2012   #5
I might suggest mipmapped and elliptical filtering with mipmapped and tiled EXRs.

But I would do this in the most recent 2013 since there was a bug in 2012 that caused the occasional loooong render when generating the filter.

Texture Publishing

Once tiled/mipmapped, these EXRs can typically be used in Vray, Renderman, Arnold, and mental ray even if you aren't using elliptical filtering. Saves some memory.
My opinions are always my own...and maybe a friend's, but never my employer's.
Old 12 December 2012   #6
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