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    • 1. 发明申请
    • Graphics-Processing Architecture Based on Approximate Rendering
    • 基于近似渲染的图形处理架构
    • US20100060629A1
    • 2010-03-11
    • US12207095
    • 2008-09-09
    • Jim RasmussonTomas Akenine-MollerPetrik ClarbergJon HasselgrenJacob Munkberg
    • Jim RasmussonTomas Akenine-MollerPetrik ClarbergJon HasselgrenJacob Munkberg
    • G06T15/00
    • G06T15/005
    • 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.
    • 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。
    • 2. 发明申请
    • Unified Compression/Decompression Graphics Architecture
    • 统一压缩/解压缩图形架构
    • US20090160857A1
    • 2009-06-25
    • US12127462
    • 2008-05-27
    • Jim RasmussonTomas Akenine-MollerPetrik ClarbergJon HasselgrenJacob Munkberg
    • Jim RasmussonTomas Akenine-MollerPetrik ClarbergJon HasselgrenJacob Munkberg
    • G06T15/50
    • G06T11/001G06T1/60G06T9/00G06T15/04G06T2210/08
    • 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.
    • 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。
    • 5. 发明申请
    • Feature block compression/decompression
    • 功能块压缩/解压缩
    • US20080170795A1
    • 2008-07-17
    • US11652144
    • 2007-01-11
    • Tomas Akenine-MollerPetrik ClarbergJon HasselgrenJacob Munkberg
    • Tomas Akenine-MollerPetrik ClarbergJon HasselgrenJacob Munkberg
    • G06K9/36
    • G06T9/20G06T9/001H04N19/99
    • 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.
    • 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。