Contents
See Subdivision Surfaces for more information on subdivision surfaces.
Poorly tessellated (non-subdivision) surfaces may show artifacts when rendering like dark edges and outlines. It's recommended to render smooth subdivisions to avoid this artifact. You may also use polygons with no normals defined and then subdivide, RenderMan will compute the normals for you.
When rendering smooth surfaces from polygons in Houdini, you can add an option to render Polygons as Subdivision to your geometry node from the Edit Rendering Parameters...
Add ri_rendersubd from the Render Properties to your object's Render TAB.
The images below were rendered using the PxrVisualizer integrator in Houdini.
Interpolate Boundary
We also need to add the interpolate boundary and turn it on. It is off by default.
