发明名称 |
System, method and computer program product for updating a far clipping plane in association with a hierarchical depth buffer |
摘要 |
Z-buffer rendering of three-dimensional scenes is made more efficient through a method for occlusion culling by which occluded geometry is removed prior to rasterization. The method uses hierarchical z-buffering to reduce the quantity of image and depth information that needs to be accessed. A separate culling stage in the graphics pipeline culls occluded geometry and passes visible geometry on to a rendering stage. The culling stage maintains its own z-pyramid in which z-values are stored at low precision (e.g., in 8 bits). The efficiency of hierarchical z-buffering is improved through hierarchical evaluation of line and plane equations. |
申请公布号 |
US8269768(B1) |
申请公布日期 |
2012.09.18 |
申请号 |
US20030658224 |
申请日期 |
2003.09.08 |
申请人 |
GREENE EDWARD COLTON;HANRAHAN PATRICK MATTHEW;NVIDIA CORPORATION |
发明人 |
GREENE EDWARD COLTON;HANRAHAN PATRICK MATTHEW |
分类号 |
G06T15/00;G06T15/40 |
主分类号 |
G06T15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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