Monster's University was not the first Pixar movie to use global illumination, but it was the first Pixar movie that used path tracing (combined with rasterizat

Monster's University was not the first Pixar movie to use global illumination, but it was the first Pixar movie that used path tracing (combined with rasterization for the primary visibility). Earlier movies such as Up and Toy Story 3 used Point Based Global Illumination.