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Learn Cinema 4D Forums Redshift – Forum Semi Transparent Materials

  • Semi Transparent Materials

    Posted by Matt on March 17, 2025 at 12:01 am

    Heya Dave,

    I came across this fantastic technical walk-through channel of how things work and wondered if you know how they make the semi transparent look with the middle completely see-through and a coloured edge to show the form of the objects. And how do you think the smokey air in the pipes is created?
    Cheers, Matt
    Animagraffs channel here – https://www.youtube.com/watch?v=F-Iugo2lqvk

    Dave replied 3 weeks, 3 days ago 2 Members · 3 Replies
  • 3 Replies
  • Dave

    Administrator
    March 18, 2025 at 10:29 pm

    Hey Matt,

    Great find! Animagraffs has some awesome breakdowns.

    For the semi-transparent material with colored edges, they’re likely using a Fresnel effect or a thin-film shader in their material setup. In Redshift (or any other renderer), you can achieve this by:

    1. Using Fresnel in the Opacity or Transmission – This makes the center fully transparent while keeping the edges visible.
    2. Adding a Rim Light or Subsurface Scattering – To enhance the glow around the edges.
    3. Using a Custom Shader – In Redshift, the RS Material with a Transmission color and a Fresnel node in the Opacity slot can help get that look.

    For the smokey air inside the pipes, it’s probably:

    • An animated texture mapped inside a transparent object.
    • A volumetric shader inside the pipes with noise-driven density.
    • A post-processing trick using compositing.

    You could try Redshift Volume with a noise texture or even an animated VDB if you want full control (Pyro can also give you very realistic looking smoke but you need a lot of RAM and storage).

    I think I might add this one to my list of tutorials to make too, a few people have contacted me about this kind of thing.

    Hope that helps

    Cheers,
    Dave

    • Matt

      Member
      March 24, 2025 at 2:08 am

      That’s fantastic! Thanks Dave.

      • Dave

        Administrator
        March 24, 2025 at 5:19 am

        No worries, did you get it working?

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