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1. 发明授权

US08004520B1 Occlusion prediction graphics processing system and method 有权
公开(公告)号：US08004520B1
公开(公告)日：2011-08-23
申请号：US10745160
申请日：2003-12-22
申请人： Douglas A. Voorhies , Svetoslav D. Tzvetkov
发明人： Douglas A. Voorhies , Svetoslav D. Tzvetkov
IPC分类号： G06T15/40
摘要： An occlusion prediction graphics processing system and method are presented in accordance with embodiments of the present invention. An occlusion prediction graphics processing method is utilized to predict which pixel values are eventually occluded before intermediate processing stages are performed on the pixel values. For example, occlusion results are predicted before the occlusion stage of a graphics pipeline. The occlusion prediction results are based upon an occlusion value received from later in a graphics processing pipeline (e.g., a raster operation stage). A convex polygonal prediction area can be established and a nearest vertex of the convex polygonal prediction area is selected for prediction analysis. Pixel values are removed or discarded from the pipeline based upon the occlusion prediction results and do not unnecessarily occupy processing resources. Removal of the pixel values from the pipeline includes pixels values associated with pixels in the convex polygonal prediction area. Pixel shading is performed on the remaining pixels.

2. 发明授权

US07634621B1 Register file allocation 有权
标题翻译：注册文件分配
公开(公告)号：US07634621B1
公开(公告)日：2009-12-15
申请号：US11556677
申请日：2006-11-03
申请人： Brett W. Coon , John Erik Lindholm , Gary Tarolli , Svetoslav D. Tzvetkov , John R. Nickolls , Ming Y. Siu
发明人： Brett W. Coon , John Erik Lindholm , Gary Tarolli , Svetoslav D. Tzvetkov , John R. Nickolls , Ming Y. Siu
IPC分类号： G06F12/00
CPC分类号： G06F9/3012 , G06F9/30123 , G06F9/3824 , G06F9/3851 , G06F9/3885 , G06F12/0223 , Y02D10/13
摘要： Circuits, methods, and apparatus that provide the die area and power savings of a single-ported memory with the performance advantages of a multiported memory. One example provides register allocation methods for storing data in a multiple-bank register file. In a thin register allocation method, data for a process is stored in a single bank. In this way, different processes use different banks to avoid conflicts. In a fat register allocation method, processes store data in each bank. In this way, if one process uses a large number of registers, those registers are spread among the banks, avoiding a situation where one bank is filled and other processes are forced to share a reduced number of banks. In a hybrid register allocation method, processes store data in more than one bank, but fewer than all the banks. Each of these methods may be combined in varying ways.
摘要翻译：提供具有多端口存储器性能优势的单端口存储器的管芯面积和功率节省的电路，方法和装置。一个示例提供用于将数据存储在多存储器寄存器文件中的寄存器分配方法。在一个薄的寄存器分配方法中，一个进程的数据被存储在一个单独的存储单元中。以这种方式，不同的流程使用不同的银行来避免冲突。在胖寄存器分配方法中，处理将数据存储在每个存储区中。这样一来，如果一个进程使用大量的寄存器，这些寄存器就会在银行之间传播，避免了一个银行被填满的情况，而其他进程被迫分担一个数量减少的银行。在混合寄存器分配方法中，处理将数据存储在多个银行中，但少于所有银行。这些方法中的每一种可以以不同的方式组合。

3. 发明授权

US07617384B1 Structured programming control flow using a disable mask in a SIMD architecture 有权
标题翻译：在SIMD架构中使用禁用掩码的结构化编程控制流程
公开(公告)号：US07617384B1
公开(公告)日：2009-11-10
申请号：US11669513
申请日：2007-01-31
申请人： Brett W. Coon , John Erik Lindholm , Svetoslav D. Tzvetkov
发明人： Brett W. Coon , John Erik Lindholm , Svetoslav D. Tzvetkov
IPC分类号： G06F15/80
CPC分类号： G06F9/3851 , G06F9/30072 , G06F9/3885 , G06F9/3887
摘要： One embodiment of a computing system configured to manage divergent threads in a SIMD thread group includes a stack configured to store state information for processing control instructions. A parallel processing unit is configured to perform the steps of determining if one or more threads diverge during execution of a conditional control instruction. Threads that exit a program are identified as idle by a disable mask. Other threads that are disabled may be enabled once the divergent threads reach an instruction that enables the disabled threads. Use of the disable mask allows for the use of conditional return and break instructions in a multithreaded SIMD architecture.
摘要翻译：被配置为管理SIMD线程组中的发散线程的计算系统的一个实施例包括被配置为存储用于处理控制指令的状态信息的堆栈。并行处理单元被配置为执行在执行条件控制指令期间确定一个或多个线程是否发散的步骤。退出程序的线程被禁用掩码标识为空闲。禁用的其他线程可以在分支线程达到启用禁用线程的指令后启用。禁用掩码的使用允许在多线程SIMD架构中使用条件返回和中断指令。

4. 发明授权

US07184040B1 Early stencil test rejection 有权
标题翻译：早期模板测试拒绝
公开(公告)号：US07184040B1
公开(公告)日：2007-02-27
申请号：US10719109
申请日：2003-11-21
申请人： Svetoslav D. Tzvetkov
发明人： Svetoslav D. Tzvetkov
IPC分类号： G06T15/00
CPC分类号： G06T15/005
摘要： Early stencil rejection is used to improve throughput of a graphics processing pipeline. Early stencil rejection of some fragments may be performed prior to fragment shading using stencil test results based on a predicted stencil function. Early stencil rejection is performed when either the predicted stencil function matches the actual stencil function or the actual stencil function is a subset of the predicted stencil function. Early stencil rejection is performed without additional read accesses of a stencil buffer.
摘要翻译：早期模板拒绝用于提高图形处理流水线的吞吐量。可以使用基于预测模板功能的模板测试结果，在片段着色之前执行一些片段的早期模板拒绝。当预测模板函数与实际模板函数匹配时，执行早期模板拒绝，或者实际模板函数是预测模板函数的子集。在没有模板缓冲器的附加读取访问的情况下执行早期模板拒绝。

5. 发明授权

US08134570B1 System and method for graphics attribute packing for pixel shader usage 有权
标题翻译：用于像素着色器使用的图形属性打包的系统和方法
公开(公告)号：US08134570B1
公开(公告)日：2012-03-13
申请号：US11532779
申请日：2006-09-18
申请人： Jerome F. Duluk, Jr. , Andrew J. Tao , Roger L. Allen , Svetoslav D. Tzvetkov , Yan Yan Tang , Elena M. Ing
发明人： Jerome F. Duluk, Jr. , Andrew J. Tao , Roger L. Allen , Svetoslav D. Tzvetkov , Yan Yan Tang , Elena M. Ing
IPC分类号： G09G5/00
CPC分类号： G06T15/005
摘要： A system, method and computer program product are provided for packing graphics attributes. In use, a plurality of graphics attributes is identified. Such graphics attributes are packed, such that the packed graphics attributes are capable of being processed utilizing a pixel shader.
摘要翻译：提供了用于打包图形属性的系统，方法和计算机程序产品。在使用中，识别出多个图形属性。打包这样的图形属性，使得打包的图形属性能够利用像素着色器进行处理。

6. 发明授权

US08108872B1 Thread-type-based resource allocation in a multithreaded processor 有权
标题翻译：多线程处理器中基于线程类型的资源分配
公开(公告)号：US08108872B1
公开(公告)日：2012-01-31
申请号：US11552109
申请日：2006-10-23
申请人： John Erik Lindholm , Bryon S. Nordquist , Simon S. Moy , Svetoslav D. Tzvetkov
发明人： John Erik Lindholm , Bryon S. Nordquist , Simon S. Moy , Svetoslav D. Tzvetkov
IPC分类号： G06F9/46
CPC分类号： G06F9/5016 , G06F2209/504 , Y02D10/22
摘要： Resources to be used by concurrent threads in a multithreaded processor are allocated based on thread types of the threads. For each of at least two thread types, an amount of the resource is reserved, and amounts currently allocated are tracked. When a request to allocate some of the resource to a new thread is received, a determination as to whether the allocation can be made is based on the thread type of the new thread, the amount of the resource reserved for that thread type, and the amount currently allocated to threads of that type.
摘要翻译：多线程处理器中并发线程使用的资源将根据线程的线程类型进行分配。对于至少两个线程类型中的每一个，资源的数量被保留，并且跟踪当前分配的数量。当接收到将一些资源分配给新线程的请求时，可以根据新线程的线程类型，为该线程类型保留的资源量以及当前分配给该类型线程的数量。

7. 发明授权

US08087029B1 Thread-type-based load balancing in a multithreaded processor 有权
标题翻译：多线程处理器中基于线程类的负载平衡
公开(公告)号：US08087029B1
公开(公告)日：2011-12-27
申请号：US11552113
申请日：2006-10-23
申请人： John Erik Lindholm , Bryon S. Nordquist , Simon S. Moy , Svetoslav D. Tzvetkov
发明人： John Erik Lindholm , Bryon S. Nordquist , Simon S. Moy , Svetoslav D. Tzvetkov
IPC分类号： G06F9/46 , G06F11/00
CPC分类号： G06F9/5083 , G06F9/3851 , G06F9/3887 , G06F11/0715 , G06F11/0793 , G06F11/3433 , G06F2201/865
摘要： Resources to be used by concurrent threads in a multithreaded processor are allocated based on thread types of the threads, and thread-type-based criteria governing resource allocation decisions are dynamically modified based on feedback information indicating the degree to which various thread types are using the resource. For each of at least two thread types, an amount of the resource is reserved, and amounts currently allocated are tracked. When an allocation request for a new thread is received, the allocation is made or not based on the new thread's type, the amount of the resource reserved for that type, and the amount currently allocated to threads of that type. If, based on feedback information from the allocation decision, the amount of the resource reserved for one thread type is determined to be insufficient, the reserved amounts are modified to better meet the demand.
摘要翻译：基于线程的线程类型分配多线程处理器中的并发线程使用的资源，并且基于指示各种线程类型正在使用的线程类型的程度的反馈信息来动态修改管理资源分配决策的线程类型的准则资源。对于至少两个线程类型中的每一个，资源的数量被保留，并且跟踪当前分配的数量。当接收到针对新线程的分配请求时，将基于新线程的类型，为该类型保留的资源量以及当前分配给该线程的数量的数量进行分配。如果基于来自分配决定的反馈信息，为一个线程类型预留的资源量被确定为不足，则修改保留量以更好地满足需求。

8. 发明授权

US07877585B1 Structured programming control flow in a SIMD architecture 有权
标题翻译： SIMD架构中的结构化编程控制流程
公开(公告)号：US07877585B1
公开(公告)日：2011-01-25
申请号：US11845429
申请日：2007-08-27
申请人： Brett W. Coon , John R. Nickolls , John Erik Lindholm , Svetoslav D. Tzvetkov
发明人： Brett W. Coon , John R. Nickolls , John Erik Lindholm , Svetoslav D. Tzvetkov
IPC分类号： G06F15/76 , G06F7/38 , G06F9/00 , G06F9/44
CPC分类号： G06F9/3851 , G06F9/30072 , G06F9/3885 , G06F9/3887
摘要： One embodiment of a computing system configured to manage divergent threads in a SIMD thread group includes a stack configured to store state information for processing control instructions. A parallel processing unit is configured to perform the steps of determining if one or more threads diverge during execution of a conditional control instruction. A disable mask allows for the use of conditional return and break instructions in a multithreaded SIMD architecture. Additional control instructions are used to set up thread processing target addresses for synchronization, breaks, and returns.
摘要翻译：被配置为管理SIMD线程组中的发散线程的计算系统的一个实施例包括被配置为存储用于处理控制指令的状态信息的堆栈。并行处理单元被配置为执行在执行条件控制指令期间确定一个或多个线程是否发散的步骤。禁用掩码允许在多线程SIMD架构中使用条件返回和中断指令。附加控制指令用于设置线程处理目标地址以进行同步，中断和返回。

9. 发明授权

US08390619B1 Occlusion prediction graphics processing system and method 有权
标题翻译：闭塞预测图形处理系统及方法
公开(公告)号：US08390619B1
公开(公告)日：2013-03-05
申请号：US10745160
申请日：2003-12-22
申请人： Douglas A. Voorhies , Svetoslav D. Tzvetkov
发明人： Douglas A. Voorhies , Svetoslav D. Tzvetkov
IPC分类号： G06T15/40
CPC分类号： G06T15/40
摘要： An occlusion prediction graphics processing system and method are presented in accordance with embodiments of the present invention. An occlusion prediction graphics processing method is utilized to predict which pixel values are eventually occluded before intermediate processing stages are performed on the pixel values. For example, occlusion results are predicted before the occlusion stage of a graphics pipeline. The occlusion prediction results are based upon an occlusion value received from later in a graphics processing pipeline (e.g., a raster operation stage). A convex polygonal prediction area can be established and a nearest vertex of the convex polygonal prediction area is selected for prediction analysis. Pixel values are removed or discarded from the pipeline based upon the occlusion prediction results and do not unnecessarily occupy processing resources. Removal of the pixel values from the pipeline includes pixels values associated with pixels in the convex polygonal prediction area. Pixel shading is performed on the remaining pixels.
摘要翻译：根据本发明的实施例呈现遮挡预测图形处理系统和方法。使用遮挡预测图形处理方法来预测在对像素值执行中间处理阶段之前哪些像素值最终被遮挡。例如，在图形管线的遮挡阶段之前预测闭塞结果。遮挡预测结果基于从稍后的图形处理流水线（例如，光栅操作阶段）接收的遮挡值。可以建立凸多边形预测区域，并选择凸多边形预测区域的最近顶点进行预测分析。基于遮挡预测结果，从流水线去除或丢弃像素值，并且不必要地占用处理资源。从流水线去除像素值包括与凸多边形预测区域中的像素相关联的像素值。对剩余像素执行像素阴影。

10. 发明授权

US08269769B1 Occlusion prediction compression system and method 有权
标题翻译：闭塞预测压缩系统及方法
公开(公告)号：US08269769B1
公开(公告)日：2012-09-18
申请号：US10745277
申请日：2003-12-22
申请人： Douglas A. Voorhies , Svetoslav D. Tzvetkov
发明人： Douglas A. Voorhies , Svetoslav D. Tzvetkov
IPC分类号： G06T15/40
CPC分类号： G06T15/40
摘要： An occlusion prediction compressing system and method are presented in accordance with embodiments of the present invention. In one embodiment, an occlusion prediction graphics processing method is utilized to predict which pixels are eventually occluded before intermediate processing stages are performed on the pixels. Culling information utilized to predict which pixel are occluded is compressed in accordance with embodiments of the present invention. In one embodiment, a cull value for a pixel culling area is retrieved and an end of pipe depth value associated with a prediction area within the pixel culling area is received. A determination is made if the end of pipe depth value is within a threshold range of the cull value. The cull value is updated based upon the relationship of the end of pipe depth value to offsets from the cull value. The cull value is associated with a mask which indicates if a plurality of prediction areas are at or in front of the cull value.
摘要翻译：根据本发明的实施例提出了一种遮挡预测压缩系统和方法。在一个实施例中，使用遮挡预测图形处理方法来预测在对像素执行中间处理阶段之前哪些像素最终被遮挡。根据本发明的实施例，压缩用于预测哪个像素被遮挡的拣配信息。在一个实施例中，检索用于像素剔除区域的剔除值，并且接收与像素剔除区域内的预测区域相关联的管道深度值的结束。如果管道深度值的结束在剔除值的阈值范围内，则确定。基于管深度值的结束与从剔除值的偏移的关系来更新剔除值。剔除值与掩码相关联，该掩码指示多个预测区域是否在剔除值之前或之前。

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