Overriding ROP Settings - shadeops/houdini-pbrt-v4 GitHub Wiki

The base ROP settings, shown below, has a handful of commonly used parameters however not every option is exposed by default.

To access a particular class's full parameter set you can create a VOP Node version which exposes everything then link it to the ROP. Once linked, the VOPs parameters will be used instead of the ROPs.

This is an instance of the pbrt_integrator_mtl VOP.

Here is the ROP linked to that pbrt_integrator_mtl VOP.