An exemplary directional occlusion system includes an object modeling system and a media player device. The object modeling system accesses a model of a virtual object to be integrated into a three-dimensional (“3D”) scene, the model including texture data defining respective sets of directional occlusion values for surface points on a surface of the virtual object. The object modeling system further generates a set of directional irradiance maps. The object modeling system provides the directional irradiance maps and the model storing the directional occlusion values to the media player device. The media player device receives the model and the directional irradiance maps and, based on this received data, renders the virtual object so as to appear to a user to be integrated into the 3D scene.