Silverwing: Opal Shader

Last tutorial I asked you what Diffraction Grating use-cases you liked and a lot of you opted for the Opal Material 🪨 As last time, this will be a tut full of OSL shaders interesting tricks and workarounds and a lot of nodes to finally get it working. So buckle up and join me on the twisted path to the creation of a black opal. Opal Scene Assets (OSL Scripts & Textures) https://drive.google.com/drive/folders/1NY5XZKxB-FQT81fWWMXbf1r4xJQismfy?usp=sharing OSL Shaders Library: https://drive.google.com/open?id=1CbD3nsT9-JpZEtW9DSKrQCdgb2rSYqjy&usp=drive_fs PATREON: --------------------------------------------------- You can support me and the community by becoming a PATREON. This helps me to keep all my content free and accessible to everyone. https://patreon.com/silverwingvfx Thank you so much for all my existing PATREONs for your generosity 🙏 FOLLOW ME ON SOCIAL MEDIA: --------------------------------------------------- Twitter: https://twitter.com/RaphaelRau BluSky: @raphaelrau.bsky.social Instagram: https://www.instagram.com/silverwingvfx Behance: https://www.behance.net/silverwing-vfx Cara: https://cara.app/silverwing-vfx Mastodon: https://mastodon.social/@silverwing TRAINING: --------------------------------------------------- If you want to learn Shading / OSL, I also offer 1:1 training. Contact me, if you are interested. VIDEO RELATED LINKS: --------------------------------------------------- Maxons Official Website: https://www.maxon.net/ Octane C4D Otoy Official Website: https://render.otoy.com/forum/viewforum.php?f=85 Blender Foundations Official Website: https://www.blender.org/download/ Blender Octane Otoy Official Website: https://render.otoy.com/forum/viewforum.php?f=113 BlackMagic Official Website: https://www.blackmagicdesign.com/ CHAPTERS: --------------------------------------------------- 00:00 Intro 00:38 Scene Overview and Tips how to best start 03:01 Chapter 1: Diffraction Grating 06:07 Chapter 2.1: Structure - Voronoi OSL Node 10:43 Chapter 2.2 Structure - Implementation 13:09 Chapter 3.1 What is Opalescence / Shiller / Adularescence 14:50 Chapter 3.2 Opalescence Implementation 18:05 Chapter 3.3 Opalescence Bringing it home 19:33 Chapter 4 Organic Detail - Distortion 23:57 Chapter 5 Coating / Layering 26:00 Bonus: Tweaking the shader to look good! 31:45 Final look of the Shader 32:46 Conclusion 33:25 Patreon Thanks 24:40 Famous Last Words