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The Cycles Principled BSDF will support dispersion (projects.blender.org)
submitted 2 months ago by to c/blender@lemmy.world
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The patch was accepted and merged to main as of today 2026/08/18

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[–] 3 points 2 months ago* (1 child)

I don't usually do dispersion either. I forgot the detail and have to refresh my memory by building it.

This node setup is a simplified version of method in the video linked below basic dispersion setup

https://www.youtube.com/watch?v=lEPZ1IUkoB4

In this video, the author goes into detail as to why using white noise is superior - the dispersed colors are continuous.

And with this glorious feature update (assuming it will land in 5.3) we can skip all the riggamaroo demonstrated in the video and get even more physically "accurate" result.

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  • [–] 1 point 2 months ago

    Cheers, I'll take a look. From your capture I'm not sure I understand how it would create a continuous rainbow. I would expect homogeneous color noise. I suppose the video answers this

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