Live 2022.09.16

Bismuth hopper crystal [1] patterns in nature iridescence in nature

Iridescent Metallics

https://en.wikipedia.org/wiki/Bismuth

https://en.wikipedia.org/wiki/Iridescence

References

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Bruno Militelli Bismuth photographs

bismuth 3d model

Scene File

2022_09_11_greeble_techniques.hiplc

Modeling with Find Shortest Path

The Labs Lot Subdivision node is quite useful to quickly build detail to geometry.

References

For more inspiration on how this type of workflow could be extended, check out Holden Haotian Zhang's Houdini Greeble Tool

Video On Demand

• 0:00:00 introduction
• 0:01:00 MaterialX shaderball
• 0:04:50 creating MaterialX shader
• 0:05:40 adding a dome light
• 0:08:40 loading a .mtlx example shader
• 0:10:00 graphing the .mtlx shader
• 0:12:40 examine the .mtlx file text
• 0:21:00 adjusting thin film thickness and for
• 0:32:30 using noise to drive thin film
• 0:37:00 using facing ratio to drive thin film
• 0:40:00 procedural modeling in SOPs
• 0:41:00 find shortest path
• 0:48:00 sweeping a custom font profile
• 0:53:40 applying our shader
• 0:58:00 duplicating and instancing
• 0:59:00 adding camera and area lights
• 1:04:40 extending the instancing workflow
• 1:06:50 sphere packing with vdbtospheres SOP
• 1:15:00 rendering
• 1:20:00 adjusting lights for better highlights
• 1:28:00 adding depth of field
• 1:44:00 adding physical lens shader
• 1:56:00 final render
• 1:59:00 wrapping up