Adaptive GPU Terrain Rendering Based on Synthetical LOD Factor
Jianting Zhang · Jisuanji gongcheng · 2012
In order to overcome the limitations in adaptivity of existing Graphics Processing Unit(GPU) terrain rendering method,based on the data structure of quadtree for terrain blocks,an adaptive terrain rendering method is proposed using synthetical Level of Detail(LOD) factor.The LOD evaluation function comprehensively considers three factors: the static blocks roughness error,the dynamic view-dependent error and the viewpoint moving speed influence.The vertex’s height value is smoothly geomorphed in the GPU Vertex Shader(VS) for eliminating the pops using the synthetical LOD factor.The skirts are used to avoid producing cracks.Experimental results show that the method has better adaptivity.It can obtain higher frame rates and GPU utilization ratio.