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1. 发明授权

US06690369B1 Hardware-accelerated photoreal rendering 失效
标题翻译：硬件加速的真实渲染
公开(公告)号：US06690369B1
公开(公告)日：2004-02-10
申请号：US08904715
申请日：1997-08-01
申请人： George Randolph Smith, Jr. , Karin P. Smith , David John Stradley
发明人： George Randolph Smith, Jr. , Karin P. Smith , David John Stradley
IPC分类号： G06T1500
CPC分类号： G06T15/10
摘要： A multiple-pass system for determining the primitives that are visible in a predetermined pick aperture for a “visible pick” operation. On the first pass, the primitives contained within the pick aperture and thus potentially visible are selected, and each selected primitive is assigned a pick index as an identifier. On the second pass, the pick indices of the selected primitives are rendered to a temporary frame buffer area, using a Z-buffer for hidden surface removal so that only the pick indices of the primitives visible within the pick aperture are stored in the corresponding frame buffer portion. On the third pass, the frame buffer portion corresponding to the pick aperture is read to determine the pick indices of the visible primitives. This information is then used to report back to the host the picked primitives.
摘要翻译：用于确定在“可见拾取”操作的预定拾取孔中可见的图元的多通道系统。在第一次通过中，选择包含在拾取孔径内并因此潜在可见的图元，并且将每个选择的图元分配为拾取索引作为标识符。在第二次通过中，使用Z缓冲器将选择的原语的选择索引渲染到临时帧缓冲区，以便隐藏表面去除，使得仅在拾取孔中可见的图元的拾取索引被存储在相应的帧中缓冲部分。在第三遍中，读取与拾取孔对应的帧缓冲器部分，以确定可见图元的拾取索引。然后，该信息用于向主机报告所选的基元。

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