Iray Programmer's Manual


Lighting features of Iray Interactive render mode include:

  • Ray-traced, accurate hard- and soft-shadows

  • Accurate reflections and refractions

  • Efficient direct light sampling, including light profiles

  • Efficient multi-scale environment sampling. Initial coarse-scale approximation with low noise level converges quickly over time to an accurate result

  • Approximated indirect lighting (diffuse and glossy but diffuse-only on primary hit).

  • Fast, smooth approximation of matte ground shadows

  • Two ambient-occlusion modes (diffuse AO, AO guided by environment)