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Iray render ends too early (?)

staspstasp Posts: 13
in Daz Studio Discussion

I have a dark scene (no dome and no sun), only lit by a few primitive objects that have iray emissive surfaces.
When the render finishes (after 2.5 minutes), the render is not complete. Look at the attached image and look at her left foot, right arm and left hand... they are still full of 'noise' (white pixels).

I am using DAZ Studio 4.9.0.54 Pro Edition (64-bit) Public Build, the character is Elisse HD for Victoria 7.

The scene looks nice if I add a more lighting, but I want it to be dark.

I can not find a way to make Iray render until those noisy areas are complete. I come from the world of using Poser and Reality for Luxrender (which renders until I tell it to stop). I have tried to increase "Min samples" and "Max samples", but that did not help.

Can anyone please guide me to where (and what) I (hopefully) can modify some render settings to make Iray render more of the image before it thinks that the image is complete?

Thanks in advance

Stefan

elisse.jpg
768 x 1024 - 164K

Comments

  • mjc1016mjc1016 Posts: 15,001

    How long is it rendering for?

     

  • DAZ_SpookyDAZ_Spooky Posts: 3,100

    Iray relies on three stop conditions. (Under Progressive rendering on the render settings panel)

    1. Convergence (Default 95%)

    2. Iterations (Default 5000) 

    3. Time (Default 7200 Seconds)

    It will stop when it hits the first stop condition. 

    You can increase any/all of those (Using the gear even change the maximum). You can also change those during a render, or after a render stops to continue the render on the side of the render window. 

    rendersettings.png
    432 x 560 - 41K
    RenderWindowSettings.jpg
    1276 x 941 - 427K
  • staspstasp Posts: 13
    mjc1016 said:

    How long is it rendering for?

     

    It renders for about 2 minutes and 30 seconds (a few hundred iterations).

  • staspstasp Posts: 13
    DAZ_Spooky said:

    Iray relies on three stop conditions. (Under Progressive rendering on the render settings panel)

    1. Convergence (Default 95%)

    2. Iterations (Default 5000) 

    3. Time (Default 7200 Seconds)

    It will stop when it hits the first stop condition. 

    You can increase any/all of those (Using the gear even change the maximum). You can also change those during a render, or after a render stops to continue the render on the side of the render window. 

    Ok, I will try to increase the Convergence and see what happens.

    Thanks for helpful input :)

  • mjc1016mjc1016 Posts: 15,001

    Don't go higher than 99% on the Convergence...odd things can happen at 100%. 

    Also, there are some other things that you can do that may help...like adjusting the tone mapping settings.

  • staspstasp Posts: 13

    Well, just increasing convergence to get a longer render did not help much.

    But.... enabling the firefly filter did. Now I finally got a nice render without that noice.

  • ToborTobor Posts: 2,300

    I was going to say those are fireflies, not unconverged pixels. Fireflies generally have a brighter look -- hence the name.

    The firefly filter is on by default. You must have disabled it at some time.

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