1. A method of using an integrated acceleration data structure, comprising: with a first processing element, issuing a ray into a three dimensional scene, traversing the integrated acceleration data structure by taking branches to bounding volume nodes intersected by the ray until an object node is reached, wherein the bounding volume nodes define volumes of the three dimensional scene; and with a second processing element, performing physics based calculations on objects within the scene by searching for object nodes within the integrated acceleration data structure and performing the physics based calculations on objects defined by the object nodes.