How radiosity affects your 3D scene

There are few 3D graphics features that I wouldn´t want to be without. Radiosity is definitelly one of them. What it does, is to add natural lighting all over your scene – as it lets all the lights bounce around several times.

I often avoid using it in animations though, since it adds to the render time. Those times call for faking it with some well aimed lights.

What I found to be extremely important when dealing with radiosity, is the position of the lights. Since everything bounces off everything, the key is really to place a few lights – but do it well – and let the technology do the rest.

In a way, radiosity makes 3D lights behave like real world rays – with all the pros and cons that comes with them.

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11 Responses to “How radiosity affects your 3D scene”

  1. Elton May 1, 2010 at 4:11 pm #

    I’d better plan on getting some new 3D apps. 😉

  2. esha May 1, 2010 at 5:07 pm #

    Nice informative video tutorial 🙂
    But the background music drives me crazy, it makes it hard for me to concentrate on the voice.

  3. nDelphi May 1, 2010 at 5:38 pm #

    I use LDP2 with DAZ Studio as much as possible. I think it does well to fake such lighting as radiosity. In many scenes, just upping the ambient value will do.

    And as you guys have mentioned many times, a few well placed lights can help fake it, as well.

  4. Gerhard B May 1, 2010 at 6:06 pm #

    Great demonstration. I’d like to see some demos of lighting techniques of DAZ content in Vue or using IBL in Daz.

    Also I bought the 3d Graphics Basic Course and even though I’ve been doing 3d and using lightwave for ten years I learn a lot of great stuff, especially about Daz that I didn’t know. I wanted to email you but couldn’t find an email on your site. But I didn’t get the email lessons and think I must have misspelled my email address when I filled out the form since there wasn’t a confirmation email box. But you have my email with this comment.

    Anyway, great job with all the content! I highly recommend the 3d Graphics Basic Course to everyone, especially the included section on using layers which is worth the price of admission and revolutionized my Daz rendering techniques. Keep up the good work!

  5. Waldemar Belwon May 1, 2010 at 11:29 pm #

    Esha, thanks and good point about the music!

  6. Waldemar Belwon May 1, 2010 at 11:44 pm #

    Gerhard, glad a Lightwave artist found that course userful! 🙂 I´ve emailed you the download link…

  7. sandman_max May 2, 2010 at 5:03 pm #

    Walle, what software packages can handle radiosity?

  8. Waldemar Belwon May 2, 2010 at 5:46 pm #

    Sandman_max: Frankly, most of them! 🙂 DAZ Studio Advanced has UberEnv2. Poser has IBL, and all the more advanced 3D packages have this built in – such as Lightwave, Vue, 3D Max Studio, Carrara and so on.

  9. Robert Stevenson May 31, 2010 at 5:07 am #

    Waldemar – where did the Warehouse model come from in the “How Radiosity affects your 3d scene” video? Is it available at DAZ or Dreamlight?

    Thanks for the 3d graphics basic course and ALL the cool tutorials and eBooks at Dreamlight. They’ve all helped me very much.

    Robert S.

  10. Waldemar Belwon May 31, 2010 at 10:32 am #

    Hey Robert, thank you very much. The warehouse model is from the fantastic modeller Stefan Morell a.k.a Stonemason.

    You can get it at DAZ 3D in his DAZ store.

  11. forex robot June 6, 2010 at 8:53 am #

    nice post. thanks.

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