Houdini, Redshift

Fluffy Clouds – Snippet Vol.5

The goal was to achieve a simple cloud setup with Houdini & Redshift, just with fractals and without simulations.
To avoid one single huge VDB grid, i decided to pre-cache volume instances and scatter them back on geo.
Down belowe i summarise some steps for my simple fluffy cloud setup.

1.Started with one single piece to check fractal animation.


2.Create multiple static instances per frame and cache them out.


20 x 13.0 Mio-18.0 Mio VDB’s

3.Scatter points on a noised grid and add the dummy-geo to previz the cloud carpet. For randomness some stamps on pscale, orientation and shape (here 10 shape variations).


4.Point positions are used for instaces, based on the attributes. A rough fog VDB is added to fill some gaps and to mimic some kind of haze around the clouds.


5.Rendering output with the redshift volume shader. In Fusion i added rays, background, color-corrections.


6.Some test with a explicit form. A heart. Sweet…