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1.发明申请公开(公告)号：US20080247641A1
公开(公告)日：2008-10-09
申请号：US11953339
申请日：2007-12-10
IPC分类号： G06K9/00
CPC分类号： G06T11/40 , G09G5/363 , G09G5/393 , G09G2340/02 , G09G2340/10 , H04N19/12 , H04N19/147 , H04N19/154 , H04N19/176 , H04N19/40 , H04N19/423
摘要： Methods and apparatus are disclosed for the processing of frame buffer data, such as color buffer data, in graphics processing applications. Although more generally applicable, these methods and apparatus are particularly useful in real-time, polygon-based, 3D rendering applications. An exemplary method for processing graphics data according to one or more embodiments of the invention begins with the retrieval, from a buffer, of pixel values corresponding to a tile of two or more pixels, and with the updating of one or more of those updated pixel values. The updated pixel values are selectively compressed using a lossy compression operation or a lossless compression operation, based on an accumulated error metric value for the tile. If lossy compression is used, then the accumulated error metric value for the tile is updated; in either event, the compressed pixel values are stored in the frame buffer for further processing. With this approach, the accumulated error caused by successive, or tandem, compression operations may be limited to a pre-determined maximum.
摘要翻译： 公开了用于在图形处理应用中处理帧缓冲器数据（例如彩色缓冲器数据）的方法和装置。 尽管更普遍适用，但是这些方法和装置在实时，基于多边形的3D渲染应用中特别有用。 根据本发明的一个或多个实施例的用于处理图形数据的示例性方法开始于从缓冲器检索对应于两个或更多个像素的图块的像素值，并且随着更新这些更新像素中的一个或多个 价值观。 基于瓦片的累积误差度量值，使用有损压缩操作或无损压缩操作来选择性地压缩更新的像素值。 如果使用有损压缩，则更新瓦片的累积误差量度值; 在任一情况下，将压缩像素值存储在帧缓冲器中用于进一步处理。 利用这种方法，由连续或串联的压缩操作引起的累积误差可能被限制为预定的最大值。
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公开(公告)号：US20100060629A1
公开(公告)日：2010-03-11
申请号：US12207095
申请日：2008-09-09
IPC分类号： G06T15/00
CPC分类号： G06T15/005
摘要： A graphics processing circuit for rendering three-dimensional graphics data is disclosed. The circuit includes pipelined graphics processing stages, wherein each of two or more of the stages is configured to process at least one of graphics primitives, vertices, tiles, and pixels, according to a stage-specific error budget. Depending on its error budget, each of these stages may select a high- or low-precision calculation, select between lossless and lossy compression, adjust the compression ratio of a variable lossy compression algorithm, or some combination of these approaches. The circuit further comprises a global error-control unit configured to determine error budgets for each of the two or more stages, based on at least one of error data received from the two or more stages, predetermined scene complexity data, and user-defined error settings, and to assign the error budgets to the graphics processing stages. Corresponding methods for processing graphics data are also disclosed.
摘要翻译： 公开了一种用于渲染三维图形数据的图形处理电路。 电路包括流水线图形处理阶段，其中两个或多个阶段中的每一个被配置为根据阶段特定的错误预算来处理图形基元，顶点，瓦片和像素中的至少一个。 根据其错误预算，这些阶段中的每一个可以选择高精度或低精度的计算，在无损压缩和有损压缩之间进行选择，调整可变有损压缩算法的压缩比，或这些方法的某种组合。 该电路还包括全局误差控制单元，其被配置为基于从两个或多个阶段接收到的错误数据，预定场景复杂性数据和用户定义的误差中的至少一个来确定两个或更多个阶段中的每一个的错误预算 设置，并将错误预算分配给图形处理阶段。 还公开了处理图形数据的相应方法。
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公开(公告)号：US20090160857A1
公开(公告)日：2009-06-25
申请号：US12127462
申请日：2008-05-27
IPC分类号： G06T15/50
CPC分类号： G06T11/001 , G06T1/60 , G06T9/00 , G06T15/04 , G06T2210/08
摘要： A unified compression/decompression architecture is disclosed for reducing memory bandwidth requirements in 3D graphics processing applications. The techniques described erase several distinctions between a texture (compressed once, and decompressed many times), and buffers (compressed and decompressed repeatedly during rendering of an image). An exemplary method for processing graphics data according to one or more embodiments of the invention thus begins with the updating of one or more tiles of a first image array, which are then compressed, using a real-time buffer compression algorithm, to obtain compressed image array tiles. The compressed image array tiles are stored for subsequent use as a texture. During real-time rendering of a second image array, the compressed image array tiles are retrieved and decompressed using a decompression algorithm corresponding to the buffer compression algorithm. The decompressed image array tiles are then applied as a texture to one or more primitives in the second image array.
摘要翻译： 公开了一种用于减少3D图形处理应用中的存储器带宽要求的统一的压缩/解压缩架构。 描述的技术擦除纹理（压缩一次，解压缩多次）和缓冲区（在渲染图像期间重复压缩和解压缩）之间的几个区别。 因此，根据本发明的一个或多个实施例的用于处理图形数据的示例性方法开始于使用实时缓冲器压缩算法更新第一图像阵列的一个或多个瓦片，然后将其压缩以获得压缩图像 阵列瓦片。 压缩的图像阵列瓦片被存储以供随后用作纹理。 在第二图像阵列的实时渲染期间，使用与缓冲器压缩算法相对应的解压缩算法来检索和解压缩压缩图像阵列瓦片。 然后将解压缩的图像阵列瓦片作为纹理应用于第二图像阵列中的一个或多个基元。
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公开(公告)号：US20090046935A1
公开(公告)日：2009-02-19
申请号：US12161851
申请日：2007-01-22
CPC分类号： G06T9/00 , H04N19/103 , H04N19/176 , H04N19/90
摘要： First and second codewords are determined, based on first feature vector components of the image elements in an image block, as representations of a first and second component value. Third and fourth codewords are determined, based on second vector components, as representations of a third and fourth component value. First N1 and second N2 resolution numbers are selected based on the relation of a distribution of the first vector components and a distribution of the second vector components. N1 additional component values are generated based on the first and second component values and N2 additional component values are generated based on the third and fourth component values. Component indices indicative of the generated component values are then provided for the different image elements.
摘要翻译： 基于图像块中的图像元素的第一特征向量分量来确定第一和第二码字作为第一和第二分量值的表示。 基于第二矢量分量确定第三和第四码字作为第三和第四分量值的表示。 基于第一矢量分量的分布和第二矢量分量的分布的关系来选择第一N1和第二N2分辨率数。 基于第一和第二分量值生成N1个附加分量值，并且基于第三和第四分量值生成N 2个附加分量值。 然后为不同的图像元素提供指示生成的分量值的分量指数。
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5.发明申请Method, Apparatus, and Computer Program Product for Improved Graphics Performance 有权方法，设备和计算机程序产品，用于改进图形性能公开(公告)号：US20100026684A1
公开(公告)日：2010-02-04
申请号：US12534374
申请日：2009-08-03
CPC分类号： G06T15/40
摘要： This relates to a generation of digitally represented graphics. A first representation of a group of vertices is received. A second representation of said group of vertices is determined based on said first representation. A first set of instructions is executed on said second representation of said group of vertices for providing a third representation of said group of vertices, said first set of instructions being associated with vertex position determination. The third representation of said group of vertices is subjected to a culling process.
摘要翻译： 这涉及到一代数字化图形。 接收一组顶点的第一个表示。 基于所述第一表示来确定所述顶点组的第二表示。 在所述顶点组的所述第二表示上执行第一组指令，以提供所述顶点组的第三表示，所述第一组指令与顶点位置确定相关联。 对所述顶点组的第三表示进行剔除处理。
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公开(公告)号：US20080170795A1
公开(公告)日：2008-07-17
申请号：US11652144
申请日：2007-01-11
IPC分类号： G06K9/36
摘要： A compressor for compressing a block of feature vectors representing a feature associated with image elements, includes means (20, 22) for determining the distribution of the feature vectors, means (20, 24, 26, 28) for transforming each point pattern in a predetermined set of point patterns to fit the determined distribution and a selector (30) for selecting a transformed point pattern that best fits the determined distribution. Furthermore, an encoder (32) represents the block of feature vectors by an identifier identifying the selected point pattern in the set of point patterns, parameters representing the transformation associated with the selected point pattern, and an index for each feature vector representing the nearest point in the transformed selected point pattern.
摘要翻译： 一种用于压缩表示与图像元素相关联的特征的特征向量块的压缩器，包括用于确定特征向量分布的装置（20,22），用于将每个点图案转换成图形元素的装置（20,24,26,28） 预定的一组点图案以适合所确定的分布;以及选择器（30），用于选择最适合所确定的分布的变换点图案。 此外，编码器（32）通过识别标识点模式集合中的选定点模式的标识符，表示与所选点模式相关联的变换的参数以及表示最近点的每个特征向量的索引来表示特征向量块 在变形的选择点模式。
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公开(公告)号：US20100097377A1
公开(公告)日：2010-04-22
申请号：US12581339
申请日：2009-10-19
摘要： A first representation of a group of vertices may be received and a second representation of said group of vertices may be determined based on said first representation. A first set of instructions may be executed on said second representation of the group of vertices for providing a third representation of said group of vertices. The first set of instructions is associated with vertex position determination. The third representation of the group of vertices is subjected to a culling process.
摘要翻译： 可以接收一组顶点的第一表示，并且可以基于所述第一表示来确定所述顶点组的第二表示。 可以在所述顶点组的所述第二表示上执行第一组指令，以提供所述顶点组的第三表示。 第一组指令与顶点位置确定相关联。 顶点组的第三个表示是进行剔除的过程。
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8.发明授权公开(公告)号：US08031937B2
公开(公告)日：2011-10-04
申请号：US11953339
申请日：2007-12-10
CPC分类号： G06T11/40 , G09G5/363 , G09G5/393 , G09G2340/02 , G09G2340/10 , H04N19/12 , H04N19/147 , H04N19/154 , H04N19/176 , H04N19/40 , H04N19/423
摘要： Methods and apparatus are disclosed for the processing of frame buffer data, such as color buffer data, in graphics processing applications. Although more generally applicable, these methods and apparatus are particularly useful in real-time, polygon-based, 3D rendering applications. An exemplary method for processing graphics data according to one or more embodiments of the invention begins with the retrieval, from a buffer, of pixel values corresponding to a tile of two or more pixels, and with the updating of one or more of those updated pixel values. The updated pixel values are selectively compressed using a lossy compression operation or a lossless compression operation, based on an accumulated error metric value for the tile. If lossy compression is used, then the accumulated error metric value for the tile is updated; in either event, the compressed pixel values are stored in the frame buffer for further processing. With this approach, the accumulated error caused by successive, or tandem, compression operations may be limited to a pre-determined maximum.
摘要翻译： 公开了用于在图形处理应用中处理帧缓冲器数据（例如彩色缓冲器数据）的方法和装置。 尽管更普遍适用，但是这些方法和装置在实时，基于多边形的3D渲染应用中特别有用。 根据本发明的一个或多个实施例的用于处理图形数据的示例性方法开始于从缓冲器检索对应于两个或更多个像素的图块的像素值，并且随着更新这些更新像素中的一个或多个 价值观。 基于瓦片的累积误差度量值，使用有损压缩操作或无损压缩操作来选择性地压缩更新的像素值。 如果使用有损压缩，则更新瓦片的累积误差量度值; 在任一情况下，将压缩像素值存储在帧缓冲器中用于进一步处理。 利用这种方法，由连续或串联的压缩操作引起的累积误差可能被限制为预定的最大值。
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公开(公告)号：US09665951B2
公开(公告)日：2017-05-30
申请号：US12127462
申请日：2008-05-27
CPC分类号： G06T11/001 , G06T1/60 , G06T9/00 , G06T15/04 , G06T2210/08
摘要： A unified compression/decompression architecture is disclosed for reducing memory bandwidth requirements in 3D graphics processing applications. The techniques described erase several distinctions between a texture (compressed once, and decompressed many times), and buffers (compressed and decompressed repeatedly during rendering of an image). An exemplary method for processing graphics data according to one or more embodiments of the invention thus begins with the updating of one or more tiles of a first image array, which are then compressed, using a real-time buffer compression algorithm, to obtain compressed image array tiles. The compressed image array tiles are stored for subsequent use as a texture. During real-time rendering of a second image array, the compressed image array tiles are retrieved and decompressed using a decompression algorithm corresponding to the buffer compression algorithm. The decompressed image array tiles are then applied as a texture to one or more primitives in the second image array.
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公开(公告)号：US20120154399A1
公开(公告)日：2012-06-21
申请号：US13400911
申请日：2012-02-21
CPC分类号： G06T17/20
摘要： Hierarchical bounding of displaced parametric surfaces may be a very common use case for tessellation in interactive and real-time rendering. An efficient normal bounding technique may be used, together with min-max mipmap hierarchies and oriented bounding boxes. This provides substantially faster convergence for the bounding volumes of the displaced surface, without tessellating and displacing the surface in some embodiments. This bounding technique can be used for different types of culling, ray tracing, and to sort higher order primitives in tiling architectures.
摘要翻译： 位移参数曲面的分层边界可能是交互式和实时渲染中细分的非常常见的用例。 可以使用有效的正常边界技术，以及min-max mipmap层次结构和定向边界框。 这在一些实施例中对于位移表面的边界体积提供了显着更快的收敛，而没有镶嵌和移位表面。 这种边界技术可以用于不同类型的拣选，光线跟踪，以及排列平铺架构中的高阶原语。
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