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  • Animation AA flicker

    I could use a quick and dirt tip about some AA settings for animations. By pre-rendering the irradiance map, i managed to create a pretty smooth animation. The only thing that's flickering or actually noisy, are the edges of 3d trees. palms, leaves and such. Both the geometry and their shadows are vibrating slightly. The architectural geometry seems to be fine.

    I am using adaptive QMC at 3/6 with the global qmc set at 0.08.

    Also, which filter would be a good choice for animations?
    Dusan Bosnjak
    http://www.dusanbosnjak.com/

  • #2
    Originally posted by pailhead View Post
    I am using adaptive QMC at 3/6 with the global qmc set at 0.08.

    Also, which filter would be a good choice for animations?
    3/6 @ 0.08 is pretty low.

    Generally speaking you never want to set min subdivisions higher then 1, unless in some specific cases (dark scenes).
    What you want to do instead is to give image sampler a range of samples to work with. The more range, the better AA result you will get. For example, experiment with such settings as 1/8, @ 0.003, 1/16 @ 0.008.
    By having noise thresh lower, you can give less max samples, or have the noise thresh higher, and give more max samples.
    Keep inmind that the settings I suggested are not written in stone, whatever you find works best for you...
    Dmitry Vinnik
    Silhouette Images Inc.
    ShowReel:
    https://www.youtube.com/watch?v=qxSJlvSwAhA
    https://www.linkedin.com/in/dmitry-v...-identity-name

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    • #3
      In case of a building complex which contains vegetation, it would generally be wiser to go with a higher threshold and higher range?

      In any case, adaptive DMC is the way to go? Area sampler as well? I won't have much time to experiment with this unfortunately, as i'm working on a really tight deadline. I am pre-rendering irradiance maps tonight, and ill have to spit out a number of sequences tommorow.
      Dusan Bosnjak
      http://www.dusanbosnjak.com/

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      • #4
        Originally posted by pailhead View Post
        In case of a building complex which contains vegetation, it would generally be wiser to go with a higher threshold and higher range?
        With high detailed scene, the higher dmc range is required. Thats just the nature of things. If you have render power, then there is no problem, if you dont, then small experiment of just 5 frames with various settings on most noticeble area of the image can tell you what are the settings you might need.
        Dmitry Vinnik
        Silhouette Images Inc.
        ShowReel:
        https://www.youtube.com/watch?v=qxSJlvSwAhA
        https://www.linkedin.com/in/dmitry-v...-identity-name

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        • #5
          I've always used 1-16 @ .008 and using Area filter. If anything flickers, it's usually something else like the GI or a texture or opacity map, in which case I tweak the individual texture filters. Anything over 1-16 is usually overkill.

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          • #6
            I got some good results with Quadratic Filter. But I didn't find yet a good balance between render time vs. AA flicker in a tight deadline.
            www.thefakeworld.net is back!

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            • #7
              Originally posted by HAWF View Post
              I got some good results with Quadratic Filter. But I didn't find yet a good balance between render time vs. AA flicker in a tight deadline.
              Animations and tight deadlines don't go well together unless Natty is involved!

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              • #8
                Originally posted by duke2 View Post
                I've always used 1-16 @ .008 and using Area filter. If anything flickers, it's usually something else like the GI or a texture or opacity map, in which case I tweak the individual texture filters. Anything over 1-16 is usually overkill.
                This is what I use, except no filter and sometimes down to 1-12 for scenes that take too long. Any slight flicker I get from taking it down is only really noticible by me, and after post/video compression even I can barely pick it out.

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