Fireflies, bright pixels seemingly out of place compared to neighboring pixels, are a common artifact in Monte Carlo ray traced images. They arise from low-probability events, and would be resolved in the limit as more samples are taken. However, these…
Continue Reading→This paper presents MoonRay, a high performance production rendering architecture using Monte Carlo path tracing developed at DreamWorks. MoonRay is the first production path tracer, to our knowledge, designed to fully leverage Single Instruction/Multiple Data (SIMD) vector units throughout. To…
Continue Reading→We present a multi-species model for the simulation of gravity driven landslides and debris flows with porous sand and water interactions. We use continuum mixture theory to describe individual phases where each species individually obeys conservation of mass and momentum…
Continue Reading→Rendering explosions with self-illumination is a challenging problem. Explosions contain animated volumetric light sources immersed in animated smoke that cast volumetric shadows, which play an essential role and are expensive to compute. We propose an efficient solution that redefines this…
Continue Reading→We present a new efficient algorithm for computing signed distance fields by means of the Fast Sweeping Method. Unlike existing algorithms ours is explicitly designed to explore the benefits of sparse (vs dense) grids as well as concurrency, i.e. mutli-threading. Research…
Continue Reading→We present FurCollide, a fast, robust, and artist friendly tool used for collision detection and collision resolution of fur curves with meshes. e tool helps artists interact with and control tens of thousands of curves with ease while providing high…
Continue Reading→The Material Point Method has proven itself to be a versatile tool for animation of natural phenomena, like sand [Klar et al. 2016], snow [Stomakhin et al. 2013], and even lava [Stomakhin et al. 2014]. The main benefits of MPM…
Continue Reading→Since Shrek 2, DreamWorks artists have used the fabric model developed by [Glumac and Doepp 2004] extensively on cloth material shading. Even after we developed the physically based microcylinderical cloth model by [Sadeghi et al. 2013], they continued to prefer…
Continue Reading→Hair plays a feature role in the film Trolls. It is a crucial part of the overall character design of the Trolls themselves, typically composing over half the silhouette of the character. However, the use of hair on the show…
Continue Reading→This talk presents the techniques used to create the hair for ‘The Fashionista Twins’, Satin and Chenille, from the film Trolls. The conjoined twins are uniquely connected in a loop by their brightly colored hair. The seamless connection of their…
Continue Reading→