Hello,

How can I render normals from a pyro simulation on houdini 16.
I have tried this : http://forums.odforce.net/topic/14661-normal-passes-on-volume-renders/ [forums.odforce.net]
but it doesn't work anymore.

Thank you !

You can still use that method (global N) x Of from densitytoOpacity. The length of the normal will be modified by the density though, so I'm not sure how useful it will be. To make N available in volume shaders, you need to add the render property “Compute Normals for Volumes” (vm_volumenormal) and set it True.

http://www.sidefx.com/docs/houdini/props/ [sidefx.com]

I'll ask extra in this topic.

This is what presentation shows (also attachment below):





this is what I get from rendering with compute normals to volumes:


What went wrong?