Required For Houdini 16 Fur:In hairgen object's Render tab, we need to set Hair Generation to Use SOP Geometry so RiCurves will be generated. Otherwise, no fur will be rendered. |
To render Houdini fur with RenderMan, we need to add the required RenderMan curve attributes and use the PxrMarschnerHair hair Bxdf.
For Houdini 15.5, select the fur object node (e.g. the fur node inside grid_object1_fur), add the following RenderMan attributes.
For Houdini 16, add these attributes to the hair gen node. See Curves for more information on these attributes.
|
For cubic bezier curve interpolation, we need to set the Guide Groom node's Guide Creation/Segments as a multiple of 3, e.g. 3, 6, 9, etc. |
For hair, it is also recommended to add the following attribute.
|
For ROP, it is recommended to add ri_hairminwidth which sets the minimal width for the hair.
Dive into the fur's shopnet. Create a RIS Network and PxrMarschnerHair inside the RIS Network.
Set the Material of the fur object to point to this shader path.
Turn off display for other nodes so only fur is displayed.
Like rendering normal Curves in Houdini, we also need to add a width attribute.