Abstract: With the constant increase in the scale and complexity of three-dimensional virtual scenes in recent years, very large-scale scenes (such as buildings, cities, etc.) can hardly be processed on single rendering node and their interactive performance can also be hard to achieve. Aiming at this shortcoming, the authors present an interactive distributed rendering framework. The authors divide the large scene into a set of renderable sub-scenes, which are distributed to different rendering nodes for processing. Intermediate sub-scene rendering results are merged to the final result based on depth information. To reduce the latency, the rendering results are compressed to accelerate the network transmission. The proposed distributed rendering system can efficiently process rendering and interaction for large-scale scenes. Moreover, the experiment has also confirmed that it is able to provide good scalability. A wide range of applications can benefit from interactive distributed rendering by this system.

Key words: rendering, distributed system, scene distribution, interactive