公开(公告)号：US07400326B1

公开(公告)日：2008-07-15

申请号：US10944483

申请日：2004-09-16

申请人： Dominic Acocella ,  Robert W. Gimby ,  Thomas H. Kong ,  Andrew D. Bowen ,  Christopher J. Goodman ,  David C. Tannenbaum ,  Jeffrey B. Moskal ,  Steven Gregory Foster, Jr.

发明人： Dominic Acocella ,  Robert W. Gimby ,  Thomas H. Kong ,  Andrew D. Bowen ,  Christopher J. Goodman ,  David C. Tannenbaum ,  Jeffrey B. Moskal ,  Steven Gregory Foster, Jr.

IPC分类号： G06F13/14

CPC分类号： G06F13/4018

摘要： Systems and methods for delivering two data streams via two buses allow one of the buses to be used for delivering selected elements of the data stream that is primarily being delivered by the other bus. At an input rerouting circuit, the selected elements are rerouted from the second data stream into the first data stream; a token inserted in the second data stream identifies a position of the rerouted element. The modified streams are transmitted by the two buses. A receiving circuit reinserts the rerouted data element into the second data stream at the sequential position identified by the placeholder token.

摘要翻译： 通过两个总线传送两个数据流的系统和方法允许一个总线用于传送主要由另一个总线传送的数据流的所选元素。 在输入重路由电路中，所选元素从第二数据流重新路由到第一数据流; 插入第二数据流中的令牌标识重新路由的元素的位置。 修改的流由两条总线传输。 接收电路在由占位符令牌识别的连续位置处将重新路由的数据元素重新插入到第二数据流中。

公开(公告)号：US07339590B1

公开(公告)日：2008-03-04

申请号：US10934119

申请日：2004-09-02

申请人： Jeffrey B. Moskal ,  David C. Tannenbaum ,  Andrew D. Bowen ,  Jakob Nebeker

发明人： Jeffrey B. Moskal ,  David C. Tannenbaum ,  Andrew D. Bowen ,  Jakob Nebeker

IPC分类号： G06F15/00 ,  G06T1/00 ,  G06T11/40 ,  G09G5/36

CPC分类号： G06T15/005 ,  G06T1/60 ,  G06T15/80

摘要： A graphics processing subsystem includes a vertex processing unit that allows vertex shader programs to arbitrarily access data stored in vertex texture maps. The vertex processing unit includes a vertex texture fetch unit and vertex processing engines. The vertex processing engines operate in parallel to execute vertex shader programs that specify operations to be performed on vertices. In response to a vertex texture load instruction, a vertex processing engine dispatches a vertex texture request to the vertex texture fetch unit. The vertex texture fetch unit retrieves the corresponding vertex texture map data. While the vertex texture fetch unit is processing a vertex texture request, the requesting vertex processing engine is adapted to evaluate whether instructions that follow the vertex texture load instruction are dependent on the vertex texture map data, and if the instructions are not dependent on the vertex texture map data, to execute the additional instructions.

摘要翻译： 图形处理子系统包括允许顶点着色器程序任意访问存储在顶点纹理图中的数据的顶点处理单元。 顶点处理单元包括顶点纹理提取单元和顶点处理引擎。 顶点处理引擎并行运行以执行指定要对顶点执行的操作的顶点着色器程序。 响应于顶点纹理加载指令，顶点处理引擎向顶点纹理提取单元调度顶点纹理请求。 顶点纹理提取单元检索相应的顶点纹理贴图数据。 当顶点纹理提取单元正在处理顶点纹理请求时，请求顶点处理引擎适于评估跟随顶点纹理加载指令的指令是否取决于顶点纹理贴图数据，并且如果指令不依赖于顶点 纹理贴图数据，执行附加说明。

公开(公告)号：US06972769B1

公开(公告)日：2005-12-06

申请号：US10934120

申请日：2004-09-02

申请人： Jakob Nebeker ,  Jeffrey B. Moskal

发明人： Jakob Nebeker ,  Jeffrey B. Moskal

IPC分类号： G06T11/40 ,  G06T15/00

CPC分类号： G06T15/005

摘要： A vertex texture cache unit enables vertex shader programs to arbitrarily access array data while minimizing pipeline stalls due to memory latency. The vertex texture cache unit receives vertex texture requests from multiple vertex processing engines, each executing multiple vertex shader programs. The vertex texture cache unit stores frequently accessed vertex texture map data in a cache memory. When a cache miss occurs, the vertex texture cache unit continues to process subsequent vertex texture requests while data is being retrieved from memory for the cache miss. Because the vertex texture cache unit may output vertex texture map data in a different order than the corresponding vertex texture requests are received, the vertex texture cache unit maintains the association between vertex texture map data and its set of attributes, so that the vertex texture map data is formatted correctly and returned to the appropriate vertex processing engine and vertex shader program.

摘要翻译： 顶点纹理缓存单元使得顶点着色器程序能够随意访问阵列数据，同时由于内存等待时间而使流水线停顿最小化。 顶点纹理缓存单元接收来自多个顶点处理引擎的顶点纹理请求，每个顶点处理引擎执行多个顶点着色器程序。 顶点纹理缓存单元将经常访问的顶点纹理贴图数据存储在高速缓冲存储器中。 当发生高速缓存未命中时，顶点纹理缓存单元继续处理随后的顶点纹理请求，同时从存储器检索数据以用于高速缓存未命中。 由于顶点纹理缓存单元可以以与接收的相应顶点纹理请求不同的顺序输出顶点纹理映射数据，所以顶点纹理缓存单元保持顶点纹理映射数据与其属性集合之间的关联，使得顶点纹理映射 数据格式正确，并返回到相应的顶点处理引擎和顶点着色器程序。