Pixar has their own rendering engine called RenderMan, here's a very interesting paper on some improvements they did to their ray-tracer for the movie 'Cars' https://graphics.pixar.com/library/RayTracingCars/paper.pdf
Pixar has their own rendering engine called RenderMan, here's a very interesting paper on some improvements they did to their ray-tracer for the movie 'Cars' https://graphics.pixar.com/library/RayTracingCars/paper.pdf