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Refraction be excluded from global "Max ray intensity"?

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  • Refraction be excluded from global "Max ray intensity"?

    Can Refraction Ray be excluded from "Max ray intensity"?

    At "Max ray intensity" (default 20), looking at colord bright lights through Refraction glossiness 1.0 and 0.99 materials shows extreme differences in results.

    If I disable global "Max ray intensity" or increase the value to a large value (ex:100), I see no difference, but I don't want to increase the "Max ray intensity" to prevent FireFly reflections.

    sample scene is attached

    Click image for larger version  Name:	maxrayintensity_prob.jpg Views:	0 Size:	199.8 KB ID:	1144455
    Attached Files

    OakCorp Japan - Yuji Yamauchi
    oakcorp.net
    v-ray.jp

  • #2
    I don't think you can, since the parameter is global. What are you trying to achieve? Maybe there is another way of doing it.
    Aleksandar Hadzhiev | chaos.com
    Chaos Support Representative | contact us

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    • #3
      My question is simple.
      Is there a way to keep the default 20 Max ray intensity and not clamp the light intensity via the glossiness 0.99( or less) refracted Ray?
      (Without compositing or rendering twice)

      Or a feature request to add the "Reflection Ray Only" option to Max ray intensity.
      Last edited by flat; 05-04-2022, 08:19 PM.

      OakCorp Japan - Yuji Yamauchi
      oakcorp.net
      v-ray.jp

      Comment


      • #4
        I don't think there is.
        Aleksandar Hadzhiev | chaos.com
        Chaos Support Representative | contact us

        Comment


        • #5
          Very disappointed.
          Isn't it the support team that comes up with solutions?
          No thought for future improvements?

          This question was asked by one of my clients.
          I reply that Chaos support team did not offer any solution?


          OakCorp Japan - Yuji Yamauchi
          oakcorp.net
          v-ray.jp

          Comment


          • #6
            Every little problem can't be solved by ChaosGroup at the drop of a hat. Tell your client you'll figure out something. I'm sure you will
            www.DanielBuck.net - www.My46Willys.com - www.33Chevy.net - www.DNSFail.com

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            • #7
              flat I was too laconic with my previous post, excuse me. The difference is only visible because of the Exposure adjustment in the VFB2 (indeed, the pixel values of the glass are different). One way to solve it would be to clamp the image (0-1 values; i.e. through Exponential color mapping), however, this way a lot of information will be lost. Faking it with a second rendering may also work, though you wanted to avoid it.
              Aleksandar Hadzhiev | chaos.com
              Chaos Support Representative | contact us

              Comment


              • #8
                What I wanted was not an immediate solution.
                I wanted a comment that the developers are aware that this kind of problem occurs (and will mention it in the Issue Tracker) and that it will be remedied in the future, if possible.

                It was not clear from the comments so far if the Chaos developers are aware of this issue.

                The worst part is that the issue is forgotten in this thread.

                I would reply to my client that there is currently no solution other than 2-pass rendering, but that I expect Chaos developers to find a solution in the future.

                If I had the authority to write in the Issue tracker, I would not have had to report it in the forum.
                Last edited by flat; 07-04-2022, 09:35 PM.

                OakCorp Japan - Yuji Yamauchi
                oakcorp.net
                v-ray.jp

                Comment


                • #9
                  The thing is, there isn't a bug to be logged, and adding a "Refraction Ray only" would require far too many resources for an issue, which can be resolved by other means.
                  Aleksandar Hadzhiev | chaos.com
                  Chaos Support Representative | contact us

                  Comment

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