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1. 发明授权

US09489767B1 Cull streams for fine-grained rendering predication 有权
标题翻译：用于细粒度渲染预测的Cull流
公开(公告)号：US09489767B1
公开(公告)日：2016-11-08
申请号：US11956306
申请日：2007-12-13
申请人： Cass W. Everitt , Franck R. Diard
发明人： Cass W. Everitt , Franck R. Diard
IPC分类号： G06T15/40 , G06T15/80
CPC分类号： G06T15/40 , G06T15/005 , G06T15/405 , G06T15/80
摘要： One embodiment of the present invention sets forth a technique to perform fine-grained rendering predication using an IGPU and a DGPU. A graphics driver divides a 3D object into batches of triangles. The IGPU processes each batch of triangles through a modified rendering pipeline to determine if the batch is culled. The IGPU writes bits into a bitstream corresponding to the visibility of the batches. The DGPU reads bits from the bitstream and performs full-blown rendering, including shading, but only on the batches of triangles whose bit indicates that the batch is visible. Advantageously, this approach to rendering predication provides fine-grained culling without adding unnecessary overhead, thereby optimizing both hardware resources and performance.
摘要翻译：本发明的一个实施例提出了使用IGPU和DGPU执行细粒度渲染预测的技术。图形驱动程序将3D对象分成三个三角形。 IGPU通过修改的渲染管线处理每批三角形，以确定批次是否被剔除。 IGPU将比特写入与批次的可见性相对应的比特流中。 DGPU从比特流中读取比特流，并执行完整的渲染，包括着色，但仅在批次可以看到的批次的三角形中。有利地，这种渲染预测的方法提供了细粒度的淘汰，而不会增加不必要的开销，从而优化硬件资源和性能。

2. 发明授权

US09437031B2 Virtual memory based noise textures 有权
标题翻译：基于虚拟内存的噪声纹理
公开(公告)号：US09437031B2
公开(公告)日：2016-09-06
申请号：US11522022
申请日：2006-09-15
申请人： Cass W Everitt
发明人： Cass W Everitt
IPC分类号： G06T15/00 , G06T1/60
CPC分类号： G06T15/005 , G06T1/60
摘要： A large non-patterned noise texture occupies a relatively small physical memory space. Each of a small set of physical pages in physical memory includes noise texels forming part of a noise texture. A large “virtual” noise texture is created by mapping each one of a large number of pages in virtual address space to one of the small set of physical pages; multiple virtual pages may be mapped to the same physical page. The physical page that each virtual page maps to is randomly or pseudo-randomly selected such that the resulting noise texture appears to be non-repeating. When a noise texel is requested by reference to a virtual address during rendering, the virtual address of the virtual page is translated to the corresponding physical address, and the noise texel is retrieved.
摘要翻译：大的非图案化噪声纹理占据相对较小的物理存储器空间。物理存储器中的一小组物理页面中的每一个包括形成噪声纹理的一部分的噪声纹理。通过将虚拟地址空间中的大量页面中的每一个映射到小的物理页面之一来创建大的“虚拟”噪声纹理; 多个虚拟页面可能被映射到相同的物理页面。每个虚拟页面映射到的物理页面是随机或伪随机选择的，使得所得到的噪声纹理似乎不重复。当在渲染期间通过参考虚拟地址请求噪声纹素，虚拟页面的虚拟地址被转换为相应的物理地址，并且检索噪声纹理细分。

3. 发明授权

US09183662B1 System and method for enabling scene program functionality 有权
公开(公告)号：US09183662B1
公开(公告)日：2015-11-10
申请号：US12125861
申请日：2008-05-22
申请人： Jason Sams , Cass W. Everitt , Mark J. Kilgard
发明人： Jason Sams , Cass W. Everitt , Mark J. Kilgard
IPC分类号： G06T1/00 , G06T15/00 , G06T17/00
CPC分类号： G06T1/20 , G06F9/46 , G06F9/4881 , G06T15/00 , G06T17/005 , G06T2210/61
摘要： One embodiment of the present invention sets forth a technique for specifying scene programs, where the effect of executing a particular scene program is to generate a sequence of graphics commands. The application programming interface is extended to include calls used to specify a high-level scene program. Upon receiving a high-level scene program, the graphics driver generates a machine code scene program. When an application program emits a call to execute one or more machine code scene programs, the graphics driver transmits corresponding scene programs execution commands to the graphics pre-processing unit. For each scene program execution command, the graphics pre-processing unit processes instructions, programmatically reconfigures the graphics pipeline based on the execution of the machine code scene program, and launches one or more parallel threads that execute commands within the graphics pipeline. Advantageously, using scene programs, application developers may tailor application programs to more effectively dispatch tasks to the GPU.

4. 发明授权

US09159156B2 Cull streams for fine-grained rendering predication 有权
标题翻译：用于细粒度渲染预测的Cull流
公开(公告)号：US09159156B2
公开(公告)日：2015-10-13
申请号：US13471383
申请日：2012-05-14
申请人： Cass W. Everitt , Franck R. Diard
发明人： Cass W. Everitt , Franck R. Diard
IPC分类号： G06T1/00 , G06T15/00
CPC分类号： G06T15/005
摘要： One embodiment of the present invention sets forth a technique to perform fine-grained rendering predication using an IGPU. A graphics driver divides a 3D object into batches of triangles. The IGPU processes each batch of triangles through a modified rendering pipeline to determine if the batch is culled. The IGPU writes bits into a bitstream corresponding to the visibility of the batches. Advantageously, this approach to rendering predication provides fine-grained culling without adding unnecessary overhead, thereby optimizing both hardware resources and performance.
摘要翻译：本发明的一个实施例提出了使用IGPU执行细粒度渲染预测的技术。图形驱动程序将3D对象分成三个三角形。 IGPU通过修改的渲染管线处理每批三角形，以确定批次是否被剔除。 IGPU将比特写入与批次的可见性相对应的比特流中。有利地，这种渲染预测的方法提供了细粒度的淘汰，而不会增加不必要的开销，从而优化硬件资源和性能。

5. 发明授权

US09013498B1 Determining a working set of texture maps 有权
标题翻译：确定纹理贴图的工作集
公开(公告)号：US09013498B1
公开(公告)日：2015-04-21
申请号：US12340499
申请日：2008-12-19
申请人： John S. Montrym , Andrew J. Tao , Henry P. Moreton , Emmett M. Kilgariff , Cass W. Everitt , Alexander L. Minkin , Eric Anderson , Yan Yan Tang , Jerome F. Duluk, Jr.
发明人： John S. Montrym , Andrew J. Tao , Henry P. Moreton , Emmett M. Kilgariff , Cass W. Everitt , Alexander L. Minkin , Eric Anderson , Yan Yan Tang , Jerome F. Duluk, Jr.
IPC分类号： G09G5/00 , G09G5/37
CPC分类号： G09G5/37 , G06T15/005 , G06T15/04 , G06T2210/36
摘要： A system and method for tracking and reporting texture map levels of detail that are computed during graphics processing allows for efficient management of texture map storage. Minimum and/or maximum pre-clamped texture map levels of detail values are tracked by a graphics processor and an array stored in memory is updated to report the minimum and/or maximum values for use by an application program. The minimum and/or maximum values may be used to determine the active set of texture map levels of detail that is loaded into graphics memory.
摘要翻译：用于跟踪和报告在图形处理期间计算的细节纹理图层级的系统和方法允许纹理图存储的有效管理。图形处理器跟踪细节值的最小和/或最大预夹紧纹理映射级别，更新存储在存储器中的阵列以报告应用程序使用的最小值和/或最大值。最小值和/或最大值可用于确定加载到图形存储器中的细节的纹理映射级别的活动集合。

6. 发明授权

US08379033B2 Method and system for improving data coherency in a parallel rendering system 有权
标题翻译：用于提高并行渲染系统中数据一致性的方法和系统
公开(公告)号：US08379033B2
公开(公告)日：2013-02-19
申请号：US13399458
申请日：2012-02-17
申请人： Steven E. Molnar , Cass W. Everitt , Roger L. Allen , Gary M. Tarolli , John M. Danskin
发明人： Steven E. Molnar , Cass W. Everitt , Roger L. Allen , Gary M. Tarolli , John M. Danskin
IPC分类号： G06F15/80
CPC分类号： G06T15/005 , G06F9/522 , G06T2210/52
摘要： A method and system for improving data coherency in a parallel rendering system is disclosed. Specifically, one embodiment of the present invention sets forth a method for managing a plurality of independently processed texture streams in a parallel rendering system that includes the steps of maintaining a time stamp for a group of tiles of work that are associated with each of the plurality of the texture streams and are associated with a specified area in screen space, and utilizing the time stamps to counter divergences in the independent processing of the plurality of texture streams.
摘要翻译：公开了一种用于提高并行渲染系统中数据一致性的方法和系统。具体地，本发明的一个实施例阐述了一种用于在并行渲染系统中管理多个独立处理的纹理流的方法，该方法包括以下步骤：维护与多个相关联的工作的一组瓦片的时间戳的纹理流并且与屏幕空间中的指定区域相关联，并且利用时间戳来反复在多个纹理流的独立处理中的分歧。

7. 发明授权

US07746352B2 Deferred page faulting in virtual memory based sparse texture representations 有权
标题翻译：基于虚拟内存的稀疏纹理表示中的延迟页错误
公开(公告)号：US07746352B2
公开(公告)日：2010-06-29
申请号：US11611081
申请日：2006-12-14
申请人： Cass W Everitt
发明人： Cass W Everitt
IPC分类号： G06T11/40 , G09G5/00
CPC分类号： G06T11/001
摘要： A virtually-addressed local texture memory stores selected regions (a sparse representation) of a texture for use by a graphics processor. The graphics processor requests a texel of the texture by referencing a virtual address of the texel. A memory interface references an address map to determine whether the requested texel is in one of the regions of the texture that is resident in the local texture memory. If so, the texel is retrieved from the local memory and used in the rendering operation; if not, an alternative texel that is resident in the local memory is retrieved and used in the rendering operation. Non-resident regions that include requested texels are retrieved from a primary texture data store at regular intervals (e.g., once per frame) and stored in local texture memory for use in a subsequent rendering operation.
摘要翻译：虚拟寻址的本地纹理存储器存储由图形处理器使用的纹理的选定区域（稀疏表示）。图形处理器通过引用纹素的虚拟地址来请求纹理的纹理。存储器接口引用地址映射以确定所请求的纹素是否在驻留在本地纹理存储器中的纹理的区域之一中。如果是，则从本地存储器检索纹素，并在渲染操作中使用; 如果没有，则在渲染操作中检索并使用驻留在本地存储器中的替代纹理元素。包括所请求的纹素的非驻留区域以规则的间隔（例如，每帧一次）从主纹理数据存储器检索并存储在本地纹理存储器中，以用于随后的渲染操作。

8. 发明申请

US20100001999A1 Hybrid Multisample/Supersample Antialiasing 有权
标题翻译：混合多采样/超采样抗锯齿
公开(公告)号：US20100001999A1
公开(公告)日：2010-01-07
申请号：US12167997
申请日：2008-07-03
申请人： Cass W. Everitt , Steven E. Molnar
发明人： Cass W. Everitt , Steven E. Molnar
IPC分类号： G06T15/50 , G06T1/20 , G09G5/00
CPC分类号： G06T11/40
摘要： A system and method for dynamically adjusting the pixel sampling rate during primitive shading can improve image quality or increase shading performance. Hybrid antialiasing is performed by selecting a number of shaded samples per pixel fragment. A combination of supersample and multisample antialiasing is used where a cluster of sub-pixel samples (multisamples) is processed for each pass through a fragment shader pipeline. The number of shader passes and multisamples in each cluster can be determined dynamically for each primitive based on rendering state.
摘要翻译：在原始着色中动态调整像素采样率的系统和方法可以提高图像质量或增加遮蔽性能。通过选择每个像素片段的阴影样本数来执行混合抗混叠。使用超采样和多采样抗锯齿的组合，其中对于通过片段着色器管线的每次通过处理子像素采样（多采样）的簇。可以基于呈现状态为每个基元动态地确定每个集群中的着色器遍数和多个样本的数量。

9. 发明授权

US06704025B1 System and method for dual-depth shadow-mapping 有权
标题翻译：双重影像映射的系统和方法
公开(公告)号：US06704025B1
公开(公告)日：2004-03-09
申请号：US09944990
申请日：2001-08-31
申请人： Rui M. Bastos , Cass W. Everitt , Mark J. Kilgard
发明人： Rui M. Bastos , Cass W. Everitt , Mark J. Kilgard
IPC分类号： G09G502
CPC分类号： G06T15/60
摘要： A system and method are provided for improved shadow mapping in a graphics pipeline. Raw depth values are initially collected from two depth layers in a scene to be rendered. Shadow-map depth values are then calculated utilizing the raw depth values. The scene is then shadow mapped utilizing the shadow-map depth values in order to improve the appearance of shadows in a rendered scene. The various steps are carried out by a hardware-implemented graphics pipeline, which may include texturing or shadowing mapping hardware.
摘要翻译：提供了一种用于在图形管线中改进阴影映射的系统和方法。原始深度值最初从要呈现的场景中的两个深度层收集。然后使用原始深度值计算阴影图深度值。然后使用阴影映射深度值对场景进行阴影映射，以改善渲染场景中阴影的出现。各种步骤由硬件实现的图形管线执行，其可以包括纹理或阴影映射硬件。

10. 发明授权

US09208605B1 Temporal antialiasing in a multisampling graphics pipeline 有权
标题翻译：多采样图形管道中的时间抗锯齿
公开(公告)号：US09208605B1
公开(公告)日：2015-12-08
申请号：US12237605
申请日：2008-09-25
申请人： Cass W. Everitt , Rui M. Bastos
发明人： Cass W. Everitt , Rui M. Bastos
IPC分类号： G06T15/50 , G09G5/00 , G06T11/20
CPC分类号： G06T15/503 , G06T11/203 , G06T15/50
摘要： Multisampling techniques provide temporal as well as spatial antialiasing. Coverage for a primitive is determined at multiple sample locations for a pixel. In one embodiment, coverage is determined using boundary equations representing a boundary surface of the primitive in a three-dimensional space-time. A shading value for the primitive is computed for the pixel and stored for each coverage sample location of the pixel that is covered by the primitive. The sample locations are distributed in both space and time, and multiple sample locations share a single shading computation. The multisampling techniques are extendable to other dimensions that correspond to other image attributes.
摘要翻译：多采样技术提供时间和空间抗锯齿。在像素的多个采样位置确定原始图像的覆盖。在一个实施例中，使用表示三维时空中的原语的边界表面的边界方程来确定覆盖。为像素计算基元的阴影值，并为由原始图元覆盖的像素的每个覆盖样本位置存储。样本位置分布在空间和时间上，多个样本位置共享一个阴影计算。多采样技术可扩展到对应于其他图像属性的其他维度。

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