提出了一種基于了“宏三角形”網(wǎng)格的地形漫游算法(Hyper-ROAM)。該算法可以充分利用現(xiàn)代GPU的硬件特點(diǎn)，實(shí)現(xiàn)大規(guī)模地形數(shù)據(jù)的實(shí)時(shí)連續(xù)細(xì)節(jié)層次渲染。通過(guò)改變?cè)撍惴ㄖ械暮耆切蝺?nèi)部復(fù)雜度，傳統(tǒng)的ROAM算法成為了Hyper-ROAM算法的一個(gè)特例。實(shí)驗(yàn)證明ROAM算法并非是Hyper-ROAM算法所有特例中效率最高的一種，適當(dāng)選擇宏三角形的秩，可以大大提高渲染效率。
關(guān) 鍵 詞 連續(xù)細(xì)節(jié)層次; 宏三角形; ROAM算法; 實(shí)時(shí)渲染; 地形渲染

Abstract In this paper, a terrain render algorithm is developed based on marco-triangle conception, which called Hyper real-time optimally adapting meshes algorithm (Hyper-ROAM). The algorithm can take full advantage of the hardware features of modern GPU, realizing large-scale terrain for real-time continuous level of detail rendering. By adjusting the complexity of macro-triangle, the traditional ROAM becomes a special case of Hyper-ROAM algorithm space. Our tests shown that the traditional ROAM is usually not the best case. It is more efficient to select a proper complexity of the marco-triangles.
Key words continuous lod; marco-triangle; real-time optimally adapting meshes algorithm; real-time rendering; terrain rendering