Sample scenes for rendering are provided in sbf_scenes. Configurable parameters are:

• jouni: Should be adapted if you have very noisy/unnoisy scenes (default: 0.02)
• quality: How many pixels are considered when compiling neighbourhood. This impacts computing time by a large amount. Available options are high, medium, defaulting to medium.
• randomparams Which random params should be considered. Available options are frd (first reflection direction), lens, time and combinations of this (except time and frd, sorry)
• dumpfeaturebuffer For debugging, all feature buffers can be dumped (default: false)

This can be changed in rpf/SampleData.h.

• first hitpoint/second origin
• second hitpoint/third origin
• first normal
• second normal
• albedo/rho

While a random sampler makes most sense, you can also experiment with a low discrepancy sampler. See the report for more information.

This version of PBRT also allows filtering with SBF. See README.sbf.txt more information.