Hi!
I was wondering, if i can render sprites with renderman in Houdini?
I know how to render sprites with mantra by enabling Procedural, and choosing sprites, but for RIB i don't know what to type in.
I need your help, please!!!

The render procedural is for Mantra only. There is currently no RenderMan support

You'll have to copy grids to your particles and render those.

As an aside, watch out if you have lots of transparency in your sprite imagery (ie for volumetric-like stuff - clouds, etc) … RenderMan is not particularly good at rendering many many layers of transparent objects without consuming an enormous amount of memory.

Continuing to digress, if you want to do volumetric rendering, you're MUCH better off writing your own sprite renderer (OpenGL-based, for example). I don't remember the stats Sony quoted re SPLAT on Polar Express, but for our last project here we turned a 30min PRMan render (>1GB of RAM) into a 0.5sec GL render (<25MB of RAM) with comparable image quality.

Thanks!