V2EX occlusion culling

Occlusion Culling

Definition / 定义

遮挡剔除:一种图形渲染优化技术,当某个物体被其他物体挡住、从摄像机视角不可见时,就不对它进行绘制(或减少绘制成本),以提升帧率与性能。(在实时渲染、游戏引擎、VR 等领域常见。)

Pronunciation / 发音

/klun kl/

Examples / 例句

Occlusion culling helps the game run faster in crowded scenes.
遮挡剔除能让游戏在物体很多的场景里运行得更快。

By combining occlusion culling with level-of-detail techniques, the engine reduces GPU workload without noticeably changing visual quality.
通过把遮挡剔除和多细节层次(LOD)技术结合,引擎能在几乎不影响画质的情况下减少 GPU 负载。

Etymology / 词源

occlusion 来自拉丁语 occludereob- “向、对” + claudere “关闭”),原意与“遮住、堵住”相关;culling 来自英语动词 cull(挑选、剔除),常用于表示“把不需要的部分去掉”。合在一起就直观表达了“把被遮住的内容剔除不画”。

Related Words / 相关词

Literary Works / 文学作品

  • Real-Time Rendering(Akenine-Mller, Haines, Hoffman):讨论可见性判定与遮挡相关技术时常涉及 occlusion culling
  • Game Engine Architecture(Jason Gregory):在渲染管线与性能优化章节中提到 occlusion culling 的应用。
  • GPU Gems(NVIDIA 编):多篇章围绕可见性、深度测试与优化策略,包含与 occlusion culling 相关的实践与变体。
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