Here I just go over the new volume nodes available in the Cycles Render Engine, and how to make some pretty marbles using the Volume Absorption node.
My text guide on Volumetric Lighting can be found here:
A great tutorial on smoke/fire rendering can be found here:
Check out this video and others at my website: www.enigmatoots.co.uk. Feel free to contact me there or by emailing me at firstname.lastname@example.org 🙂
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Good Luck with your Blenderations and have a nice day 🙂