公开(公告)号：US6052129A

公开(公告)日：2000-04-18

申请号：US942078

申请日：1997-10-01

Applicant: Mark Christopher Fowler ,  Kirk Steffen Haskell ,  Robert Spencer Horton ,  Thomas Yu-Kiu Kwok ,  Chandrasekhar Narayanaswami ,  Bengt-Olaf Schneider ,  Mark Van Horn ,  James Lewis van Welzen

Inventor： Mark Christopher Fowler ,  Kirk Steffen Haskell ,  Robert Spencer Horton ,  Thomas Yu-Kiu Kwok ,  Chandrasekhar Narayanaswami ,  Bengt-Olaf Schneider ,  Mark Van Horn ,  James Lewis van Welzen

IPC: G06T15/30

CPC classification number: G06T15/30

Abstract: While executing the standard graphics processing steps, problem polygons (i.e., those outside of a defined clip volume) are buffered for later processing, while the standard graphics processing continues, without the need for periodically reformatting data and performing clipping. After either a predefined number of polygons have been stored at the buffer location, or at such time as a change in the rendering state occurs, the buffered polygons are clipped.

Abstract translation: 在执行标准图形处理步骤时，在标准图形处理继续进行的同时，不需要周期性重新格式化数据并进行裁剪，因此缓冲问题多边形（即，定义的剪辑卷之外的那些）被稍后处理。 在预定义数量的多边形已经存储在缓冲器位置之后，或者在呈现状态改变的时候，缓冲的多边形被剪切。

公开(公告)号：US06177944B1

公开(公告)日：2001-01-23

申请号：US09156934

申请日：1998-09-18

Applicant: Mark Christopher Fowler ,  Kirk Steffen Haskell ,  Robert Spencer Horton ,  Thomas Yu-Kiu Kwok ,  Steve Mastrianni ,  Chandrasekhar Narayanaswami ,  Bengt-Olaf Schneider ,  Mark van Horn ,  James Lewis van Welzen

Inventor： Mark Christopher Fowler ,  Kirk Steffen Haskell ,  Robert Spencer Horton ,  Thomas Yu-Kiu Kwok ,  Steve Mastrianni ,  Chandrasekhar Narayanaswami ,  Bengt-Olaf Schneider ,  Mark van Horn ,  James Lewis van Welzen

IPC: G06F1500

CPC classification number: G06T15/005

Abstract: A method and apparatus for a computer graphics rendering system which slices the traditional geometry pipeline into two phases to improve overall graphics system utilization is described. The graphics system consists of a host processor and a graphics adapter. The host creates work items and feeds them to the graphics adapter. In the two phase method, the first phase computes the clipping status and immediately returns this status information, before completion of the actual clipping, to the application running on the host processor to minimize stalling the host processor and hence the application. The second phase performs the rest of the work necessary to draw the objects on the screen. The advantage of two phase method is that the host processor minimizes its wait (but only for model/view transformation and clipping status determination) for a return status from the graphics adapter for the current work item and gets to create the next work item from the application sooner.

Abstract translation: 描述了一种用于计算机图形绘制系统的方法和装置，其将传统几何管线分成两个阶段以提高整体图形系统的利用率。 图形系统由主机处理器和图形适配器组成。 主机创建工作项并将其馈送到图形适配器。 在两相方法中，第一阶段计算削波状态，并且在完成实际削波之前立即将该状态信息返回到在主机处理器上运行的应用，以最小化主机处理器和因此应用的停顿。 第二阶段执行在屏幕上绘制对象所需的其余工作。 两相方法的优点是主机处理器最小化其等待（但仅用于模型/视图转换和裁剪状态确定），用于从当前工作项的图形适配器返回状态，并从下一个工作项中创建 申请更早