With the availability of terrain data of the TB level

how to render terrain data of TB magnitude based on ordinarily computer efficiently

is becoming a hot topic in GIS academia .Organization and management of massive data is the core mechanism for 3D terrain rendering .The traditional data structures as quadtree

octree and so on are not effective

which cannot support real-time displaying and roaming of large-scale terrain scene. According to the mechanism of multi-level buffer

implementation dynamic dispatching of LOD

graphics memory dispatching and multi-core CPU parallel computing strategy

this paper has good results. Finally

this paper puts forward the solution

a real-time Terrain Rendering Algorithm which has no concern with data size. It is verified by experiment on massive data of 1GB

10 GB

200 GB

500 GB and so on

the rendering rate can reach to 30 frame/s. It is faster than most existing algorithms. The experiment result shows the practicability of the real-time terrain rendering algorithm.