Antialiasing

Started by nick angus, February 15, 2007, 01:47:31 AM

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nick angus

Hi Folks, I am doing an animated earth pullout shot, things are getting pretty noisy as I get further out, I am getting quite alot of antialiasing type sizzling.
The thing is when I wind up the antialiasing, its not really improving.

My initial settings were detail .75 and antialiasing 5, I have tried aa as high as 11 but get a barely perceivable reduction in 'sizzle'

Is there something else that may be causing this, or is it just the details are getting down to single pixel level and need filtering at a sub-pixel level?

Cheers, Nick

viche12345

Try increasing atmosphere samples.

dhavalmistry

as Viche said atmosphere samples could be you solution...posting a screenshot would be good...


and by the way...welcome aboard...
"His blood-terragen level is 99.99%...he is definitely drunk on Terragen!"

nick angus

Wow that was quick, thanks for the awesome welcome!

I will give that a try, currently my atmos samples are at 12 which may be low, but then I really have no idea!
This is a commercial job for a Toshiba ad and is looking sweet!

Cheers, Nick


dhavalmistry

ya...12 samples are a bit low...even the default samples are set to 16
"His blood-terragen level is 99.99%...he is definitely drunk on Terragen!"

Adam Chrystie

I was about to post this same question because i was doing a fly in to the earth and had sizzles and odd banding effects...I'll crank up my atmosphere samples as well.

--------------------
Adam Chrystie
3D Artist & Infrastructure/Pipeline Developer

nick angus

Interestingly it appears my problem is not aa after all, what I thought was aa issues is actually the planet surface shader, the little black shimmering dots appear to be tiny landmasses in the ocean outside the main continents. Ironically turning up the continent roughness to 12 has almost completely solved the problem as it seems to have cleared up any stray land outside the continent boundaries.

Cheers, Nick

Will

Welcome, glad you fixed it.

BTW check out MeltingIces Gallery: http://www.meltingice.net/usergallery/index.php
                                                   The .TGD Repository: http://www.meltingice.net/userdownload/index.php?direction=0&order=&
                                                   PATHS: http://designpaths.com/
                                                    Ashundar: http://www.ashundar.com/

regards,

Will
The world is round... so you have to use spherical projection.

Oshyan

I would have guessed atmosphere too, or clouds. With full planetary shots if you have an atmosphere at all you are likely to run into noise either in the atmosphere itself or the clouds and it will be particularly noticeable when animating. Using atmosphere samples of 24-32 should be good enough. Cloud samples will depend on how dense, sharp, and deep your cloud layers are, but I would start at least at 32 and go up from there. Detail and AA should be fine where you had them, although higher detail levels *do* effectively give you antialiasing for certain situations, particularly with small terrain features and whatnot (higher detail = more micropolyon sudivisions, basically).

- Oshyan