A Polygon soup is a group of unorganized triangles, with generally no relationship whatsoever.[1] Polygon soups are the default output format when geometry is exported from a 3D modeling package, such as Maya or Blender. As soon as any kind of hierarchical sorting or clustering scheme is applied, then it becomes something else (one example being an octree, a subdivided cube). Any kind of polygonal geometry that hasn't been grouped in any way can be considered polygon soup. Optimized meshes may contain grouped items to make drawing faster.