Using Cel Shader to Cast Shadows on 100% Luminant Objects

In this tutorial I’m going to show you how you can use Cinema 4D’s Cel Shader to allow for shadows to be cast onto objects with 100% luminance.  I covered the Cel Shader in a previous tutorial but had a lot of people ask me about how this specific task is done so I wanted to go a little more in depth and highlight just the Shadow function in the Cel Shader.

To learn how I recreated this line art style of illustration in Cinema 4D,check out my Creating Line Art Animations Using Sketch and Toon tutorial.


  1. Thank you for this insight tutorial, I learned so much about Sketch and Toon shader for my new project, and below is what I came up. However I have a question that when I applied an image texture (cup noodle label) on the luminance channel, the image overrides the single color shader, and shadow doesn’t cast on the label. Is there a way to have layer shader within the luminance channel? My current solution is to render 2 different versions (one with mapping and one with shadow) and then composite in After Effects…


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