发明授权
- 专利标题: Ray tracing with depth buffered display
- 专利标题(中): 光线跟踪与深度缓冲显示
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申请号: US11201651申请日: 2005-08-11
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公开(公告)号: US07439973B2公开(公告)日: 2008-10-21
- 发明人: Gordon Clyde Fossum , Barry L Minor , VanDung Dang To
- 申请人: Gordon Clyde Fossum , Barry L Minor , VanDung Dang To
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: VanLeeuwen & VanLeeuwen
- 代理商 Matthew B. Talpis
- 主分类号: G06T15/40
- IPC分类号: G06T15/40
摘要:
An image that includes ray traced pixel data and rasterized pixel data is generated. A synergistic processing unit (SPU) uses a rendering algorithm to generate ray traced data for objects that require high-quality image rendering. The ray traced data is fragmented, whereby each fragment includes a ray traced pixel depth value and a ray traced pixel color value. A rasterizer compares ray traced pixel depth values to corresponding rasterized pixel depth values, and overwrites ray traced pixel data with rasterized pixel data when the corresponding rasterized fragment is “closer” to a viewing point, which results in composite data. A display subsystem uses the resultant composite data to generate an image on a user's display.