set rendertime limit for progressive?

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    Holger Tesch

    such a feature would be nice, especially for previewing stuff. sure, i can limit unified settings, but it would be more easy with a time limit.

    Richard Levene

    Well you could try and use string options for progressive.

    “progressive max time” seconds int
    Set time in seconds when to stop progressive rendering and iray.
    If progressive rendering and iray has run the given number of seconds it gets stopped automatically. If set to 0 or lower then the passed time is never considered to stop rendering.
    The default is 0 for unlimited.


    Holger Tesch

    ah, yeah, of course. totally forgot this. 😉


    The best practice I’ve found at least for myself to deal with progressive is this:

    I first trace a full image and then spot the part of the rendered image that are more difficult to sample and that take longer than others to converge. Then I run a renderregion on that and see how many passes it needs to be artifact free. Then I set that number of passes for the final render.

    Generally if you set a min and max to: 100, 10000.. you’ll get around 100 passes; 200, 20000.. 200passes and so on. You can take a look at how much each pass takes to get an estimated render time.

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