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Cryptomatte RS object id for vertex map

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vertex map matte
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  • K
    KJC_creates last edited by Dr. Sassi Jul 8, 2023, 10:03 PM Jul 5, 2023, 10:11 PM

    I am looking to add a cryptomatte for every material in a scene, but some of my materials have a vertex map to reveal a second material. Can I add a material ID for the material being revealed with the vertext map in the node editor?

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    • Dr. Sassi
      Dr. Sassi last edited by Jul 6, 2023, 6:49 AM

      Hi KJC-creates,

      Not to my knowledge. I will check with Redshift directly. If there is anything, I will update the thread.

      Cheers

      Dr. Sassi Sassmannshausen Ph.D.
      Senior Trainer, Maxon Master Trainer, L&D - Strategist
      Cinema 4D mentor since 2004, Member of VES, DCS.

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      • K
        KJC_creates last edited by Jul 6, 2023, 5:25 PM

        Hmm. Well I am wondering if there is another way to matte out the vertex material then. If not in a cryptomatte AOV, then what about some other object ID (or similar) that I can apply to the material that is revealed?

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        • Dr. Sassi
          Dr. Sassi last edited by Dr. Sassi Jul 6, 2023, 6:58 PM Jul 6, 2023, 6:58 PM

          Hi KJC,

          I have asked, and there is currently no way with Cryptomatte.

          If all Vertex maps have the same name (yes, that is a significant limitation, but they can be copied and named all the same for this purpose), then create an overwrite Material with it.

          Have a look here:

          CV4_2023_drs_23_REsm_01.c4d

          Is that ideal? Perhaps not, but that is all I have at the moment.

          All the best

          Dr. Sassi Sassmannshausen Ph.D.
          Senior Trainer, Maxon Master Trainer, L&D - Strategist
          Cinema 4D mentor since 2004, Member of VES, DCS.

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          • K
            KJC_creates last edited by Jul 6, 2023, 8:56 PM

            What about NOT using the cryptomatte? But some other type of matte.
            Maybe another AOV where I can ID the vertex map information?

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            • Dr. Sassi
              Dr. Sassi last edited by Jul 7, 2023, 7:22 AM

              Hi, KJC_Creates; the idea with the material overwrite to create mattes, using only Emission as output, which should be fast (GI disabled).

              I'm unaware of an option other than creating a specific setup allowing mixed materials on a single object.

              Let me ask differently, what is the target? Could a position pass perhaps help?

              All the best

              Dr. Sassi Sassmannshausen Ph.D.
              Senior Trainer, Maxon Master Trainer, L&D - Strategist
              Cinema 4D mentor since 2004, Member of VES, DCS.

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              • V
                voice-item last edited by Mar 26, 2024, 4:07 PM

                I'm also looking for a way to export vertex maps as mattes. Did you ever figure this out or is this still not possible?

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                • Dr. Sassi
                  Dr. Sassi last edited by Dr. Sassi Mar 27, 2024, 4:59 AM Mar 27, 2024, 4:58 AM

                  Hi voice-item,

                  Your question is different. If I understand correctly, you would just like the Vertex map data as a mask.

                  Here is an example. Render the file. Then go to the Render Settings and use the Overwrite Material. Render again.

                  CV4_2024_drs_24_RSvm_01.c4d

                  I have set up a material that only shows the Vertex map. The material will show any Vertex map with the same name in the material entry.

                  If you have follow-up questions that are different, please open a new Forum Thread; otherwise, things become hard to search and read. Thank you.

                  All the best

                  Dr. Sassi Sassmannshausen Ph.D.
                  Senior Trainer, Maxon Master Trainer, L&D - Strategist
                  Cinema 4D mentor since 2004, Member of VES, DCS.

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