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Render Time Question

KamaroticaKamarotica Posts: 60
in New Users

So, I have a scene with a single female figure in a space suit walking down a sci fi corridor. I set it to run overnight and in the morning after running for over 7 hours, it still shows at 0%.  Is this something to be expected from scenes? Multi day render times given the nature of the scene and computer capacity? Or is it glitching somehow?  Is there a way to know beyond just letting the program run for a couple of days?

Comments

  • Richard HaseltineRichard Haseltine Posts: 100,804

    How is the scene lit? Are there a lot of shiny surfaces?

  • KamaroticaKamarotica Posts: 60
    The only lighting is the emmissive lights in the scene. No additional lights. It's a sci fi corridor, so quite a bit of metal.
  • Richard HaseltineRichard Haseltine Posts: 100,804

    Depending on the polygon count of the emitting surfaces they could be slow, while shiny surfaces means each path takes a lot more bounces until it reaches a final value and so takes lomnger - multiply the two together to get an idea of how llong each iteration will take. Then there's the placement of the lights - the more areas there are reling on indirect light the slower the render to converge. if the light sources are high poly you could replace them with simpler primitive shapes, and set their opacity low so they aren' really visible. To tame the number of bounces use Max Path Length in Render Settings - you will probably need at least 6 if you can see a Daz human's eyes.

  • Catherine3678abCatherine3678ab Posts: 8,337

    Somewhere in the Render Settings panel one can set for how many passes and/or time to run. I would never let anything run for 7 hours but then I'm using a laptop.

    Read somewhere that if one doesn't make a reasonable cutoff direction for Iray renders, they would go on forever. One can click on the reset to default settings ... I think it goes for 2 hours max then. Iray loves light, the more the better. Anything not visible can be removed from the scene [so time is not wasted calculating] unless one is wanting the reflection to appear in something. I'm not an expert renderer ... but I like my laptop ;-)

  • KamaroticaKamarotica Posts: 60

    Thanks for the advice. I will work on adjusting settings and see what happens.

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