Loading...
> >

Iray Canvasses and Convergence

SevrinSevrin Posts: 6,313
in The Commons

So, when rendering to canvasses, there are normally canvasses that have more and those that have less light.   Now it's normal that the canvasses with less light aren't as well converged, and yet my renders can finish showing 95% converged with some canvasses looking like what you expect and the ones with less light containing with a good deal of noise.

I know what I can do to get my canvasses better lit, and that I can increase convergence % or quality.

My question is, how does Iray calculate convergence when rendering to multiple canvasses?  Is it based on the most converged canvas, or an average, or something else?

Comments

  • JonnyRayJonnyRay Posts: 1,744

    I don't know the answer definitvely, but I just ran this test, and I think this is how it's working.

    1. Setup a simple scene
    2. Configured 4 canvases in the advanced Iray Render Settings
    3. Started the render
    4. Waited until it reported it's first convergence number
    5. Canceled the render, but did not save it (so I could resume if necessary)

    I then went to my Daz Studio temp folder (on a Windows PC, this is typically going to be c:\users\<your username>\AppData\Roaming\DAZ 3D\Studio4\temp\render)

    There is an "r.png" file there and a folder called "r_canvases"

    I believe that it is the "r.png" which represents the progress which Studio is using to calculate convergence. I'm not sure if that's the canvas I chose for the Active Canvas setting on the main Iray Render Settings tab or if it's another canvas which Studio is always creating in addition to the ones I had configured. It would take more experimenting to figure that out.

  • Richard HaseltineRichard Haseltine Posts: 109,065
    JonnyRay said:

    I don't know the answer definitvely, but I just ran this test, and I think this is how it's working.

    1. Setup a simple scene
    2. Configured 4 canvases in the advanced Iray Render Settings
    3. Started the render
    4. Waited until it reported it's first convergence number
    5. Canceled the render, but did not save it (so I could resume if necessary)

    I then went to my Daz Studio temp folder (on a Windows PC, this is typically going to be c:\users\<your username>\AppData\Roaming\DAZ 3D\Studio4\temp\render)

    There is an "r.png" file there and a folder called "r_canvases"

    I believe that it is the "r.png" which represents the progress which Studio is using to calculate convergence. I'm not sure if that's the canvas I chose for the Active Canvas setting on the main Iray Render Settings tab or if it's another canvas which Studio is always creating in addition to the ones I had configured. It would take more experimenting to figure that out.

    Daz Studio isn't calculating the convergence, that's done by Iray (and DS scrapes it from the reports Iray issues).

Sign In or Register to comment.