Announcement

Collapse
No announcement yet.

Shadow Bias at 0

Collapse
X
Collapse
 
  • Page of 1
  • Filter
  • Time
  • Show
Clear All
new posts
Previous template Next
  • #1

    Shadow Bias at 0

    Hi. I was using a shadow bias of 0 for all my VrayLights for about 2 years or so. This was actually by accident when I was creating my templates, and I'm guessing it's because of a rounding error when using meters and a different decimal seperator. I've never actually encountered issues, or I never paid attention to it.

    As the default is normally 0.02, I'm not sure which units this is supposed to be in, the documentation doesn't say anything about it. What are the implications when using the bias at 0? Will there be errors? Does it have an impact on rendering times?

    Would be usefull to add this information to the documentation as for now the it is a bit meager.

    Thank you.
    A.

    ---------------------
    www.digitaltwins.be
    Tags: None
  • #2
    There was a post in which I think it was generally considered to be an old optimisation, so it isn't really necessary to use a value of anything but 0.0, as any potential overhead is negligible, yet the
    accidental penalty for having it set to the default is that people are always asking why they have perceived errors with e.g. water meeting land.
    I don't know whether that is mentioned in the docs but it should be
    https://www.behance.net/bartgelin

    Comment

    • #3
      Ah, thank you. Would be good if the default is at 0 then!
      A.

      ---------------------
      www.digitaltwins.be

      Comment

      • #4
        Actually I see that you already saw this post but maybe missed the relevant bit...https://forums.chaos.com/forum/v-ray...s-still-useful
        https://www.behance.net/bartgelin

        Comment

        • #5
          Originally posted by fixeighted View Post
          Actually I see that you already saw this post but maybe missed the relevant bit...https://forums.chaos.com/forum/v-ray...s-still-useful
          Aaah now I vagely remember . Oops. Thanks!

          In any case I was working on scenes (in meters) that span about 2km in size, with the bias at 0 and haven't had any noticeable problems.
          A.

          ---------------------
          www.digitaltwins.be

          Comment

          • #6
            Yeah they will get around to updating it at some point. They're only a small company so, y'know
            https://www.behance.net/bartgelin
            • Likes 1

            Comment

            • #7
              Originally posted by fixeighted View Post
              Yeah they will get around to updating it at some point. They're only a small company so, y'know
              Tiny in fact! https://finance.yahoo.com/news/ta-sa...165410143.html
              Sorry for the off topic but I just couldn't resist with that kind of statement

              Comment

              Previous template Next
              Working...
              X