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31. 发明授权

US06967663B1 Antialiasing using hybrid supersampling-multisampling 有权
标题翻译：使用混合超采样多采样的抗混叠
公开(公告)号：US06967663B1
公开(公告)日：2005-11-22
申请号：US10658056
申请日：2003-09-08
申请人： Rui M. Bastos , Steven E. Molnar , Michael J. M. Toksvig , Matthew J. Craighead
发明人： Rui M. Bastos , Steven E. Molnar , Michael J. M. Toksvig , Matthew J. Craighead
IPC分类号： G06T3/40 , G06T15/50 , G09G5/00
CPC分类号： G06T11/40
摘要： Hybrid sampling of pixels of an image involves generating shading values at multiple shading sample locations and generating depth values at multiple depth sample locations, with the number of depth sample locations exceeding the number of shading sample locations. Each shading sample location is associated with one or more of the depth sample locations. Generation and filtering of hybrid sampled pixel data can be done within a graphics processing system, transparent to an application that provides image data.
摘要翻译：图像的像素的混合采样涉及在多个阴影采样位置处生成阴影值，并在多个深度采样位置生成深度值，深度采样位置的数量超过阴影采样位置的数量。每个阴影样本位置与一个或多个深度样本位置相关联。混合采样像素数据的生成和滤波可以在对提供图像数据的应用程序透明的图形处理系统内完成。

32. 发明授权

US07868901B1 Method and system for reducing memory bandwidth requirements in an anti-aliasing operation 有权
标题翻译：在抗锯齿操作中减少内存带宽要求的方法和系统
公开(公告)号：US07868901B1
公开(公告)日：2011-01-11
申请号：US11557085
申请日：2006-11-06
申请人： John H. Edmondson , Steven E. Molnar , Bengt-Olaf Schneider , Gary C. King , Michael J. M. Toksvig , Peter B. Holmqvist , James M. O'Connor
发明人： John H. Edmondson , Steven E. Molnar , Bengt-Olaf Schneider , Gary C. King , Michael J. M. Toksvig , Peter B. Holmqvist , James M. O'Connor
IPC分类号： G09G5/00
CPC分类号： G06T11/40 , G09G5/363 , G09G2320/02 , G09G2360/18
摘要： Embodiments of the present invention sets forth a method and system for reducing memory bandwidth requirements for an anti-aliasing operation. The first virtual coverage information for a pixel involved in an anti-aliasing operation is maintained in memory. If a certain operating condition of the anti-aliasing operation deterministically implies the second virtual coverage information for this pixel, the second virtual coverage information, as opposed to the first virtual coverage information, is used in the anti-aliasing operation. In such situations, since the virtual coverage information is implied, it does not have to be accessed from memory, thereby improving overall system performance.
摘要翻译：本发明的实施例提出了一种用于减少抗混叠操作的存储器带宽要求的方法和系统。涉及抗混叠操作的像素的第一虚拟覆盖信息被保持在存储器中。如果抗混叠操作的某个操作条件确定地意味着该像素的第二虚拟覆盖信息，则与抗第一虚拟覆盖信息相反的第二虚拟覆盖信息被用于抗锯齿操作。在这种情况下，由于隐含虚拟覆盖信息，因此不必从存储器访问，从而提高系统的整体性能。

33. 发明授权

US07593018B1 Method and apparatus for providing explicit weights for texture filtering 有权
标题翻译：用于提供纹理过滤的显式权重的方法和装置
公开(公告)号：US07593018B1
公开(公告)日：2009-09-22
申请号：US11300811
申请日：2005-12-14
申请人： Michael J. M. Toksvig , Walter E. Donovan
发明人： Michael J. M. Toksvig , Walter E. Donovan
IPC分类号： G09G5/00 , G06K9/00
CPC分类号： G06T3/4007 , G06T15/04
摘要： A system and method for providing explicit weights for texture filtering permits filter weights to vary for each pixel within a primitive. A different filter kernel may be used for each pixel. The weights may be computed or read from a texture map. Because the weights are explicit, the fractional portions of the texture map coordinates that are typically used to determine a bilinearly filtered texel are not used.
摘要翻译：用于提供纹理过滤的显式权重的系统和方法允许滤波器权重对于原语内的每个像素而变化。可以为每个像素使用不同的滤波器内核。权重可以从纹理图计算或读取。因为权重是明确的，所以不使用通常用于确定双线性纹理纹理纹理的纹理贴图坐标的小数部分。

34. 发明授权

US07511717B1 Antialiasing using hybrid supersampling-multisampling 有权
标题翻译：使用混合超采样多采样的抗混叠
公开(公告)号：US07511717B1
公开(公告)日：2009-03-31
申请号：US11182676
申请日：2005-07-15
申请人： Rui M. Bastos , Steven E. Molnar , Michael J. M. Toksvig , Matthew J. Craighead
发明人： Rui M. Bastos , Steven E. Molnar , Michael J. M. Toksvig , Matthew J. Craighead
IPC分类号： G09G5/00 , G09G5/02
CPC分类号： G09G3/2074 , G06T11/40 , G09G5/363 , G09G2320/02 , G09G2340/0414 , G09G2340/0421 , G09G2360/18
摘要： Hybrid sampling of pixels of an image involves generating shading values at multiple shading sample locations and generating depth values at multiple depth sample locations, with the number of depth sample locations exceeding the number of shading sample locations. Each shading sample location is associated with one or more of the depth sample locations. Generation and filtering of hybrid sampled pixel data can be done within a graphics processing system, transparent to an application that provides image data.
摘要翻译：图像的像素的混合采样涉及在多个阴影采样位置处生成阴影值，并在多个深度采样位置生成深度值，深度采样位置的数量超过阴影采样位置的数量。每个阴影样本位置与一个或多个深度样本位置相关联。混合采样像素数据的生成和滤波可以在对提供图像数据的应用程序透明的图形处理系统内完成。

35. 发明授权

US07372468B1 Anisotropic texture filtering with a modified number of texture samples 有权
标题翻译：具有修改数量的纹理样本的各向异性纹理过滤
公开(公告)号：US07372468B1
公开(公告)日：2008-05-13
申请号：US11247767
申请日：2005-10-11
申请人： Michael J. M. Toksvig , William P. Newhall, Jr.
发明人： Michael J. M. Toksvig , William P. Newhall, Jr.
IPC分类号： G09G5/00
CPC分类号： G06T15/04 , G06F3/14 , G06T2210/36
摘要： Systems and methods for modifying the number of texture samples used to produce an anisotropically filtered texture mapped pixel may improve texture mapping performance. When the number of texture samples is reduced, fewer texels are read and fewer filtering computations are needed to produce a texture value for an anisotropic footprint. The number of texture samples is reduced based on the mip map level weight. The number of texture samples may also be modified using specific parameters for the coarse and/or fine mip map levels. The spacing between the texture samples along the major axis of anisotropy may be modified to improve image quality or texture cache performance.
摘要翻译：用于修改用于产生各向异性过滤纹理映射像素的纹理样本数量的系统和方法可以改善纹理映射性能。当纹理样本的数量减少时，读取更少的纹素，并且需要较少的滤波计算来产生各向异性足迹的纹理值。基于mip映射级别权重减少纹理样本的数量。纹理样本的数量也可以使用粗略和/或精细的mip地图级别的特定参数进行修改。沿着各向异性长轴的纹理样本之间的间距可以被修改以改善图像质量或纹理缓存性能。

36. 发明授权

US07996622B1 Detecting unused cache lines 有权
标题翻译：检测未使用的缓存行
公开(公告)号：US07996622B1
公开(公告)日：2011-08-09
申请号：US11890821
申请日：2007-08-07
申请人： Michael J. M. Toksvig , Christopher D. S. Donham
发明人： Michael J. M. Toksvig , Christopher D. S. Donham
IPC分类号： G06F12/00
CPC分类号： G06F12/124 , G06F12/122
摘要： In the event of a cache miss, data is written from main memory to the cache. To select a cache line to write the data to, cache lines in the cache that are not referenced during a certain interval are identified. One of the identified cache lines is selected and the data can be written to that cache line.
摘要翻译：在缓存未命中的情况下，数据从主存储器写入高速缓存。要选择一条高速缓存行来写入数据，可以识别高速缓存中一段时间内未被引用的行。选择一个已识别的高速缓存行，并将数据写入该高速缓存行。

37. 发明授权

US07884831B2 Reconfigurable high-performance texture pipeline with advanced filtering 有权
标题翻译：可重构高性能纹理管道，具有先进的过滤功能
公开(公告)号：US07884831B2
公开(公告)日：2011-02-08
申请号：US12689939
申请日：2010-01-19
申请人： Alexander L. Minkin , Joel J. McCormack , Paul S. Heckbert , Michael J. M. Toksvig , Luke Y. Chang , Karim Abdalla , Bo Hong , John W. Berendsen , Walter Donavan , Emmett M. Kilgariff
发明人： Alexander L. Minkin , Joel J. McCormack , Paul S. Heckbert , Michael J. M. Toksvig , Luke Y. Chang , Karim Abdalla , Bo Hong , John W. Berendsen , Walter Donavan , Emmett M. Kilgariff
IPC分类号： G06T17/00 , G06T11/40 , G09G5/00 , G09G5/02 , G06K9/40 , G06K9/32 , G06K9/64
CPC分类号： G06T1/60 , G06F3/14 , G06T15/04 , G06T2200/28 , G09G5/026 , G09G5/22 , G09G5/363 , G09G5/393 , G09G5/395 , G09G2360/06 , G09G2360/121 , G09G2360/18
摘要： Circuits, methods, and apparatus that provide texture caches and related circuits that store and retrieve texels in a fast and efficient manner. One such texture circuit provides an increased number of bilerps for each pixel in a group of pixels, particularly when trilinear or aniso filtering is needed. For trilinear filtering, texels in a first and second level of detail are retrieved for a number of pixels during a clock cycle. When aniso filtering is performed, multiple bilerps can be retrieved for each of a number of pixels during one clock cycle.
摘要翻译：提供纹理缓存和相关电路的电路，方法和装置，以快速和有效的方式存储和检索纹素。一个这样的纹理电路为一组像素中的每个像素提供了更多数量的iler骨，特别是当需要三线性或茴香过滤时。对于三线性滤波，在一个时钟周期内针对多个像素检索第一和第二细节级别的纹素。当执行了茴香过滤时，可以在一个时钟周期内为多个像素中的每一个检索多个b骨。

38. 发明授权

US07595806B1 Method and system for implementing level of detail filtering in a cube mapping application 有权
标题翻译：在多维数据集映射应用程序中实现详细过滤级别的方法和系统
公开(公告)号：US07595806B1
公开(公告)日：2009-09-29
申请号：US10911462
申请日：2004-08-03
申请人： Michael J. M. Toksvig , William P. Newhall, Jr. , Paul S. Heckbert
发明人： Michael J. M. Toksvig , William P. Newhall, Jr. , Paul S. Heckbert
IPC分类号： G09G5/00
CPC分类号： G06T15/04 , G06T2210/36
摘要： A method for implementing LOD (level of detail) filtering in a cube mapping application. The method includes accessing a first sample and a second sample for a cube map. A cube map path is computed between the first sample and the second sample. A distance is computed between the first sample and the second sample, wherein the distance is measured using the cube map path. LOD filtering is then implemented by using the distance between the first sample and the second sample.
摘要翻译：在多维数据集映射应用程序中实现LOD（细节级别）过滤的方法。该方法包括访问立方体贴图的第一样本和第二样本。在第一个样本和第二个样本之间计算立方体贴图路径。在第一样品和第二样品之间计算距离，其中使用立方体贴图路径测量距离。然后通过使用第一个样品和第二个样品之间的距离来实现LOD滤波。

39. 发明授权

US07558400B1 Anisotropic texture filtering optimization 有权
标题翻译：各向异性纹理过滤优化
公开(公告)号：US07558400B1
公开(公告)日：2009-07-07
申请号：US11299176
申请日：2005-12-08
申请人： Michael J. M. Toksvig , William P. Newhall, Jr.
发明人： Michael J. M. Toksvig , William P. Newhall, Jr.
IPC分类号： G06K9/00 , G09G5/00
CPC分类号： G09G5/28 , G06T15/04 , G09G5/363 , G09G2340/0457
摘要： A method for optimizing the number of bilinear samples includes the steps of computing a desired bilerp count for a pixel footprint in a mipmap, where a fractional distance represents the distance between the desired bilerp count and a first available bilerp count relative to the distance between a second available bilerp count and the first available bilerp count, determining a modified bilerp count based on the desired bilerp count, and computing a modified fractional distance based on the modified bilerp count, where the modified fractional distance is zero if the fractional distance is between zero and a first-non-zero value, but is between zero and one if the fractional distance is within a transition band. Texture values for the bilerps in the first available count and one or more additional bilerps are average to generate a pixel texture value, where the modified fractional distance determines the weights applied.
摘要翻译：用于优化双线性样本数量的方法包括以下步骤：计算mipmap中的像素覆盖区域的期望的b计数，其中分数距离表示期望的b计数和第一可用b计数之间的距离，第二可用的脐带计数和第一可用的b计数，基于所需的b计数确定修改的b计数，以及基于所修改的b计数计算修改的分数距离，其中如果分数距离在零之间，修改的分数距离为零和第一个非零值，但是如果分数距离在过渡带内，则在零和一之间。在第一个可用计数和一个或多个附加的剔除器中的iler骨的纹理值是平均的，以生成像素纹理值，其中修改的分数距离确定应用的权重。

40. 发明授权

US07456846B1 Graphical processing system, graphical pipeline and method for implementing subpixel shifting to anti-alias texture 有权
标题翻译：图形处理系统，图形流水线和实现子像素到抗混叠纹理的方法
公开(公告)号：US07456846B1
公开(公告)日：2008-11-25
申请号：US11144920
申请日：2005-06-03
申请人： Gary C. King , Michael J. M. Toksvig
发明人： Gary C. King , Michael J. M. Toksvig
IPC分类号： G09G5/00
CPC分类号： G06T15/005 , G06T2200/12 , G06T2210/36 , G09G5/363 , G09G5/391 , G09G5/393
摘要： A system, apparatus, and method are disclosed for modifying positions of sample positions for selectably oversampling pixels to anti-alias non-geometric portions of computer-generated images, such as texture, at least in part, by shifting shading sample positions relative to a frame of reference. There is generally no relative motion between the geometries and the coverage sample positions. In one embodiment, an apparatus, such as a graphics pipeline and/or a general purpose graphics processing unit, anti-aliases geometries of a computer-generated object. The apparatus includes at least a texture unit and a pipeline front end unit to determine geometry coverage and a subpixel shifter to shift shading sample positions relative to the frame of reference. The apparatus can receive subpixel shifting masks to select subsets of shading sample positions. Each of the shading sample positions is shifted to a coverage sample position to reduce level of detail (“LOD”) artifacts.
摘要翻译：公开了一种系统，装置和方法，用于至少部分地通过将遮蔽样本位置相对于一个或多个的位置来修改用于可选地过采样像素的样本位置的位置，以改变计算机生成的图像的抗混叠非几何部分，例如纹理参照系。几何和覆盖样本位置之间通常不存在相对运动。在一个实施例中，诸如图形流水线和/或通用图形处理单元的装置对计算机生成的对象的几何形状进行抗混叠。该装置至少包括一个纹理单元和一个用于确定几何覆盖的流水线前端单元和一个子像素移位器，用于相对于参考系移动阴影采样位置。该装置可以接收子像素位移掩模以选择阴影样本位置的子集。阴影样本位置中的每一个被移动到覆盖样本位置以减少细节水平（“LOD”）伪像。

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