  New algorithmic and hardware developments over the past two decades have
enabled interactive ray tracing of small to modest sized scenes, and are
finding growing popularity in scientific visualization and games. However,
interactive ray tracing has not been as widely explored in the context of
production film rendering, where challenges due to the complexity of the models
and, from a practical standpoint, their unavailability to the wider research
community, have posed significant challenges. The recent release of the Disney
Moana Island Scene has made one such model available to the community for
experimentation. In this paper, we detail the challenges posed by this scene to
an interactive ray tracer, and the solutions we have employed and developed to
enable interactive path tracing of the scene with full geometric and shading
detail, with the goal of providing insight and guidance to other researchers.
