A validation of a ray-tracing tool used to generate bi-directional scattering distribution functions for complex fenestration systems

•BSDF data characterize the solar-optical performance of complex fenestration.•A new, open-source ray-tracing tool was developed to generate BSDF datasets.•Simulated results agree with TracePro for a specular blind system.•Results agree with goniophotometer measurements for a micro-perforated mesh.•Output can be used in Radiance and EnergyPlus to determine building energy use.