1. In a digital medium environment, a computer-implemented method of efficiently rendering virtual environments utilizing full path space learning, comprising: sampling a first plurality of paths in a virtual environment to determine point estimations of light transfer between a light source and a camera perspective using a uniform distribution; approximating a global light transport function across full light paths between the light source and the camera perspective using the determined point estimations; sampling a second plurality of paths in the virtual environment using a non-uniform distribution based on the approximated global light transport function across full light paths; and creating a digital image of the virtual environment from the camera perspective based on the first plurality of paths and the second plurality of paths.