Fast Rendering Algorithm for Large-scale and Complex Scene Based on Continuous HLOD
Real-time rendering of large-scale and complex scenes is one of the important subjects in virtual reality technology.This paper presents a new fast rendering algorithm for large-scale and complex scenes.In the preprocessing phase,the algorithm partitions the scene in hierarchy and compute continuous hierarchical levels of detail(HLOD) for each hierarchical node using a mesh simplification method which supports topological structure modification.Then at run-time,the algorithm uses the hierarchy for coarse global refinement,and uses the continuous HLOD for fine local refinement.The view frustum culling can also be efficiently implemented.As the result,the method can greatly accelerate the rendering speed.Experiment results show that it is very efficient,practical and easy to implement.Moreover,the method can also be implemented in out-of-core mode.