levels. That is, after each iteration, we know how the scene looks after one light bounce, after two passes, two bounces, and so forth. This is useful for getting an interactive preview of the scene. Also, the user can stop the iterations once the image looks good enough, rather than wait for the computation to numerically converge.

thumbAnother common method for solving the radiosity equation is "shooting radiosity," which iteratively solves the radiosity equation by "shooting"