Houdini Vellum Grain / Sand / Dirt Fx - Siren Head

12th July 2020

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This is an old piece of work from 3 years ago that I decided to pick up & revive it with better visual quality.

The Siren Head model was made years go & I decided to put it to some good use with this Houdini Vfx piece.

The simple idea is simply to showcase a slightly more creative & more complex grain fx simulation in Houdini.

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Houdini Vfx break-down video

simple break-down video preview - Houdini Vfx (vid above)

• Left - rendered simulation

• Right - AO pass & vellum grains constraint clusters visualization

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Turn-around break-down video preview - Houdini Vfx (vid above)

• Left - rendered simulation

• Right - vellum grains constraint clusters visualization

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Visualization break-down video preview - Houdini Vfx (vid above)

• Left - layer 1 fx simulation driven by rising forces

• Mid- switched to custom suction forces

• Right - layer 2 fx grains transformation & falling apart simulation

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Siren head model preview

Siren head model preview - Marmoset render (img above)

Siren head model preview - Marmoset wire-frame render (img above)

Body close up model preview - Marmoset render (img above)

Body close up model preview - Marmoset wire-frame render (img above)

Upper body model preview - Marmoset render (img above)

Upper body model preview - Marmoset wire-frame render (img above)

• 3D model mainly sculpted & Zremesh in Zbrush

• Model then imported to Houdini for semi-procedural UV unwrap, rigged & animated for vfx stage

• Texture in Substance Painter

• Material & renders done using Redshift in Houdini

• Model previews prep & rendered in Marmoset

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