| Original document(26 pages) 中文版 |
A three-dimensional drawing device for drawing a three-dimensional shape at high speed. An upper-order bit comparing section compares the upper-order bit held in an upper-order Z buffer memory with the upper-order bit of the depth value calculated by a depth value calculating section. If the upper-order bits agree with each other, a lower-order bit comparing section compares the lower-order bit of the depth value held in a lower-order bit Z buffer memory with the lower-order bit of the depth value calculated by the depth value calculating section. A record update section updates the upper-order bit of the depth value held in the upper-order Z buffer memory and the lower-order bit held in the lower-order Z buffer memory if the depth indicated by the upper-order bit of the depth value calculated by the depth value calculating section is shallow, and updates the lower-order bit held in the lower-order Z buffer memory if the depth indicated by the lower-order bit of the depth value calculated by the depth value calculating section is shallow. |
Application Number
申请号 |
200580002520 |
Application Date
申请日 |
2005.06.08 |
| Title 名称 |
Three-dimensional shape drawing device and three-dimensional shape drawing method |
Publication Number
公开号 |
1910622 |
Publication Date
公开日 |
2007.02.07 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
G06T15/40 |
Applicant(s) Name
申请人 |
Matsushita Electric Ind Co., Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Wakayama Yorihiko |
| Attorney & Agent 代理人 |
qian weimin |
| More information 更 多 信 息 |
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