| 发明名称 |
TESSELLATING PATCHES OF SURFACE DATA IN TILE BASED COMPUTER GRAPHICS RENDERING |
| 摘要 |
A method and system for culling a patch of surface data from one or more tiles in a tile based computer graphics system. A rendering space is divided into a plurality of tiles and a patch of surface data read. Then, at least a portion of the patch is analysed to determine data representing a bounding depth value evaluated over at least one tile. This may comprise tessellating the patch of surface data to derive a plurality of tessellated primitives and analysing at least some of the tessellated primitives. For each tile within which the patch is located, the data representing the bounding depth value is then used to determine whether the patch is hidden in the tile, and at least a portion of the patch is rendered, if the patch is determined not to be hidden in at least one tile. |
| 申请公布号 |
US2014176544(A1) |
申请公布日期 |
2014.06.26 |
| 申请号 |
US201314135125 |
申请日期 |
2013.12.19 |
| 申请人 |
Imagination Technologies Limited |
发明人 |
Fishwick Steven J.;Howson John W. |
| 分类号 |
G06T15/10 |
主分类号 |
G06T15/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of culling hidden tessellated primitives in a tile based graphics system, comprising:
subdividing a rendering space into a plurality of tiles; reading a patch of surface data; tessellating the patch of surface data to derive a plurality of tessellated primitives; analysing at least a portion of the patch comprising at least some of the tessellated primitives to determine data representing a bounding depth value evaluated over at least one tile; for each tile within which the patch is located, using the data representing the bounding depth value to determine whether the patch is hidden in the tile; and rendering at least a portion of the patch if the patch is determined not to be hidden in at least one tile. |
| 地址 |
Kings Langley GB |
