发明授权
- 专利标题： Three-dimensional graphics clipping method, three-dimensional graphics displaying method, and graphics processing apparatus using the same
- 专利标题（中）： 三维图形裁剪方法，三维图形显示方法和使用其的图形处理装置
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申请号： US13473619申请日： 2012-05-17
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公开(公告)号： US09030478B2公开(公告)日： 2015-05-12
- 发明人: Hua Yang
- 申请人： Hua Yang
- 申请人地址： TW New Taipei
- 专利权人： VIA Technologies, Inc.
- 当前专利权人： VIA Technologies, Inc.
- 当前专利权人地址： TW New Taipei
- 代理机构： Jianq Chyun IP Office
- 优先权： CN201110130739 20110519
- 主分类号： G06T13/20
- IPC分类号： G06T13/20 ; G06T15/30
摘要：
A three-dimensional (3D) graphics clipping method, a 3D graphics displaying method, and a 3D graphics processing apparatus using the same are provided. The 3D graphics clipping method includes following steps. A plurality of vertexes of a triangle is obtained, wherein a 3D object is constructed by using a plane of the triangle. Whether a view point is located between a first near clipping plane and a far clipping plane is determined. A second near clipping plane is set according to the determination result, and a view field is set between the second near clipping plane and the far clipping plane. A near clipping procedure is executed on the triangle according to the second near clipping plane. In the 3D graphics clipping method, a correct view field is determined in advance so that a graphics processing procedure is efficiently sped up and the accuracy of the near clipping procedure is increased.
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