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1. 发明授权

US10043234B2 System and method for frame buffer decompression and/or compression 有权
公开(公告)号：US10043234B2
公开(公告)日：2018-08-07
申请号：US13732286
申请日：2012-12-31
申请人： NVIDIA Corporation
发明人： Jonathan Dunaisky , Steven E. Molnar , Christian Amsinck , Rui Bastos , Eric B. Lum , Justin Cobb , Emmett Kilgariff
IPC分类号： G06T17/00 , G06T1/60 , G06T9/00 , G09G5/393 , H04N19/426
摘要： A system and method for decompressing compressed data (e.g., in a frame buffer) and optionally recompressing the data. The method includes determining a portion of an image to be accessed from a memory and sending a conditional read corresponding to the portion of the image. In response to the conditional read, an indicator operable to indicate that the portion of the image is uncompressed may be received. If the portion of the image is compressed, in response to the conditional read, compressed data corresponding to the portion of the image is received. In response to receiving the compressed data, the compressed data is uncompressed into uncompressed data. The uncompressed data may then be written to the memory corresponding to the portion of the image. The uncompressed data may then be in-place compressed for or during subsequent processing.

2. 发明申请

US20140184612A1 VARIABLE-WIDTH DIFFERENTIAL MEMORY COMPRESSION 有权
标题翻译：可变宽度差分存储器压缩
公开(公告)号：US20140184612A1
公开(公告)日：2014-07-03
申请号：US13732313
申请日：2012-12-31
申请人： NVIDIA CORPORATION
发明人： Jonathan Dunaisky , David Kirk McAllister , Craig McKnight
IPC分类号： G06T1/20 , G06T9/00
CPC分类号： G06T9/00 , H04N19/426
摘要： A method, in one embodiment, can include performing difference transformation of image samples. In addition, the method can also include performing length selection. Furthermore; the method can include performing packing that includes utilizing varying sized bit fields to produce a compressed representation.
摘要翻译：在一个实施例中，一种方法可以包括执行图像样本的差分变换。此外，该方法还可以包括执行长度选择。此外; 该方法可以包括执行包括利用不同大小的位字段以产生压缩表示的包装。

3. 发明授权

US09591309B2 Progressive lossy memory compression 有权
标题翻译：逐行有损内存压缩
公开(公告)号：US09591309B2
公开(公告)日：2017-03-07
申请号：US13829547
申请日：2013-03-14
申请人： NVIDIA Corporation
发明人： Jonathan Dunaisky , Eric B. Lum
IPC分类号： G06T9/00 , H04N19/13 , H04N19/593 , H04N19/91 , H04N19/132 , H04N19/14 , H04N19/186
CPC分类号： H04N19/13 , H04N19/132 , H04N19/14 , H04N19/186 , H04N19/593 , H04N19/91
摘要： A method, in one embodiment, can include performing difference transformation of image samples. In addition, the method can also include performing length selection. The method can also include performing a prioritized ordering of difference data. Furthermore, the method can include performing packing that includes utilizing varying sized bit fields to produce a lossy compressed representation.
摘要翻译：在一个实施例中，一种方法可以包括执行图像样本的差分变换。此外，该方法还可以包括执行长度选择。该方法还可以包括执行差分数据的优先排序。此外，该方法可以包括执行包括利用不同大小的位字段以产生有损压缩表示的打包。

4. 发明授权

US09530189B2 Alternate reduction ratios and threshold mechanisms for framebuffer compression 有权
标题翻译：帧缓冲压缩的替代减少比率和阈值机制
公开(公告)号：US09530189B2
公开(公告)日：2016-12-27
申请号：US13727965
申请日：2012-12-27
申请人： NVIDIA Corporation
发明人： Jonathan Dunaisky , David Kirk McAllister , Steven E. Molnar , Narayan Kulshrestha , Rui Bastos , Joseph Detmer , William Craig McKnight
IPC分类号： G06T15/30 , G09G5/00 , G09G5/02 , G03F3/08 , G06K9/00 , G06K9/40 , G06K9/36 , G09G5/36 , G06T5/00 , G06T9/00 , H04N19/426 , G09G5/39
CPC分类号： G06T5/002 , G06T9/00 , G09G5/363 , G09G5/39 , G09G2340/02 , G09G2340/10 , G09G2360/06 , G09G2360/121 , G09G2360/122 , H04N19/426
摘要： A method for compressing framebuffer data is presented. The method includes determining a reduction ratio for framebuffer data in a tile including multiple samples. The reduction ratio determined is independent of the sampling mode, where the sampling mode is the number of samples within each pixel in the tile. The method further includes comparing a first portion of the framebuffer data for each of the multiple samples to determine an equality comparison result and also comparing a second portion of the framebuffer data for each one of the multiple samples to compute per-channel differences for each one of the multiple samples and testing the per-channel differences against a threshold value to determine a threshold comparison result. Finally, the method comprises compressing the framebuffer data for the tile based on the reduction ratio, the equality comparison result and the threshold comparison result to produce output framebuffer data for the tile.
摘要翻译：提出了一种压缩帧缓冲器数据的方法。该方法包括确定包括多个样本的瓦片中的帧缓冲器数据的缩小率。确定的减小比率与采样模式无关，其中采样模式是瓦片中每个像素内的采样数。该方法还包括比较多个样本中的每一个的帧缓冲器数据的第一部分以确定相等比较结果，并且还比较多个样本中的每一个样本的帧缓冲器数据的第二部分，以计算每个样本的每个信道差异并且测试每个通道的差异与阈值以确定阈值比较结果。最后，该方法包括基于缩小比率，等式比较结果和阈值比较结果压缩瓦片的帧缓冲器数据，以产生瓦片的输出帧缓冲器数据。

5. 发明申请

US20140184601A1 SYSTEM AND METHOD FOR FRAME BUFFER DECOMPRESSION AND/OR COMPRESSION 审中-公开
标题翻译：用于框架缓冲和/或压缩的系统和方法
公开(公告)号：US20140184601A1
公开(公告)日：2014-07-03
申请号：US13732286
申请日：2012-12-31
申请人： NVIDIA CORPORATION
发明人： Jonathan Dunaisky , Steven E. Molnar , Christian Amsinck , Rui Bastos , Eric B. Lum , Justin Cobb , Emmett Kilgariff
IPC分类号： G06T1/60 , G06T9/00
CPC分类号： G06T1/60 , G06T9/00 , G09G5/393 , G09G2360/122 , H04N19/428
摘要： A system and method for decompressing compressed data (e.g., in a frame buffer) and optionally recompressing the data. The method includes determining a portion of an image to be accessed from a memory and sending a conditional read corresponding to the portion of the image. In response to the conditional read, an indicator operable to indicate that the portion of the image is uncompressed may be received. If the portion of the image is compressed, in response to the conditional read, compressed data corresponding to the portion of the image is received. In response to receiving the compressed data, the compressed data is uncompressed into uncompressed data. The uncompressed data may then be written to the memory corresponding to the portion of the image. The uncompressed data may then be in-place compressed for or during subsequent processing.
摘要翻译：一种用于解压缩压缩数据（例如，在帧缓冲器中）并可选地重新压缩数据的系统和方法。该方法包括从存储器确定要访问的图像的一部分，并发送对应于图像的该部分的条件读取。响应于条件读取，可以接收可操作以指示图像的部分未被压缩的指示符。如果图像的部分被压缩，则响应于条件读取，接收到对应于图像部分的压缩数据。响应于接收到压缩数据，压缩数据被解压缩成未压缩的数据。然后可以将未压缩的数据写入与图像的该部分对应的存储器。然后可以对未压缩的数据进行就地压缩或在后续处理期间进行压缩。

6. 发明授权

US10008029B2 Updating depth related graphics data 有权
公开(公告)号：US10008029B2
公开(公告)日：2018-06-26
申请号：US13907711
申请日：2013-05-31
申请人： Nvidia Corporation
发明人： Christian Amsinck , Eric B. Lum , Barry Rodgers , Tony Louca , Christian Rouet , Jonathan Dunaisky
IPC分类号： G06T15/40
CPC分类号： G06T15/405
摘要： Updating depth related graphics data is described. Geometric primitives are processed. Pixels are generated from the primitives based on the processing, each of which has at least one corresponding depth value. Culling is performed on a first group of the pixels, based on a representation of the at least one depth related value corresponding to each. Pixels may be discarded based on the culling and upon which a second group of pixels remain. A depth related raster operations function is performed, in which data is transacted with a depth buffer. The culling function is updated in relation to the transacting. The updating is performed on the basis of a granularity, which characterizes the culling function.

7. 发明授权

US09607407B2 Variable-width differential memory compression 有权
公开(公告)号：US09607407B2
公开(公告)日：2017-03-28
申请号：US13732313
申请日：2012-12-31
申请人： NVIDIA Corporation
发明人： Jonathan Dunaisky , David Kirk McAllister , William Craig McKnight
IPC分类号： G06T9/00 , G06T1/60 , H04N19/426
CPC分类号： G06T9/00 , H04N19/426
摘要： A method, in one embodiment, can include performing difference transformation of image samples. In addition, the method can also include performing length selection. Furthermore; the method can include performing packing that includes utilizing varying sized bit fields to produce a compressed representation.

8. 发明申请

US20130249897A1 ALTERNATE REDUCTION RATIOS AND THRESHOLD MECHANISMS FOR FRAMEBUFFER COMPRESSION 有权
标题翻译： FRAMEBUFFER压缩的替代减少率和阈值机制
公开(公告)号：US20130249897A1
公开(公告)日：2013-09-26
申请号：US13727965
申请日：2012-12-27
申请人： NVIDIA CORPORATION
发明人： Jonathan Dunaisky , David Kirk McAllister , Steven E. Molnar , Narayan Kulshrestha , Rui Bastos , Joseph Detmer , William Craig McKnight
IPC分类号： G06T5/00
CPC分类号： G06T5/002 , G06T9/00 , G09G5/363 , G09G5/39 , G09G2340/02 , G09G2340/10 , G09G2360/06 , G09G2360/121 , G09G2360/122 , H04N19/426
摘要： A method for compressing framebuffer data is presented. The method includes determining a reduction ratio for framebuffer data in a tile including multiple samples. The reduction ratio determined is independent of the sampling mode, where the sampling mode is the number of samples within each pixel in the tile. The method further includes comparing a first portion of the framebuffer data for each of the multiple samples to determine an equality comparison result and also comparing a second portion of the framebuffer data for each one of the multiple samples to compute per-channel differences for each one of the multiple samples and testing the per-channel differences against a threshold value to determine a threshold comparison result. Finally, the method comprises compressing the framebuffer data for the tile based on the reduction ratio, the equality comparison result and the threshold comparison result to produce output framebuffer data for the tile.
摘要翻译：提出了一种压缩帧缓冲器数据的方法。该方法包括确定包括多个样本的瓦片中的帧缓冲器数据的缩小率。确定的减小比率与采样模式无关，其中采样模式是瓦片中每个像素内的采样数。该方法还包括比较多个样本中的每一个的帧缓冲器数据的第一部分以确定相等比较结果，并且还比较多个样本中的每一个样本的帧缓冲器数据的第二部分，以计算每个样本的每个信道差异并且测试每个通道的差异与阈值以确定阈值比较结果。最后，该方法包括基于缩小比率，等式比较结果和阈值比较结果压缩瓦片的帧缓冲器数据，以产生瓦片的输出帧缓冲器数据。

9. 发明授权

US09754561B2 Managing memory regions to support sparse mappings 有权
公开(公告)号：US09754561B2
公开(公告)日：2017-09-05
申请号：US14046064
申请日：2013-10-04
申请人： NVIDIA CORPORATION
发明人： Jonathan Dunaisky , Henry Packard Moreton , Jeffrey A. Bolz , Yury Y. Uralsky , James Leroy Deming , Rui M. Bastos , Patrick R. Brown , Amanpreet Grewal , Christian Amsinck , Poornachandra Rao , Jerome F. Duluk, Jr. , Andrew J. Tao
IPC分类号： G06T1/60 , G06F12/08 , G06F12/10 , G09G5/39 , G06F12/0897 , G06F12/1027
CPC分类号： G09G5/39 , G06F12/0897 , G06F12/1027 , G06T1/60
摘要： One embodiment of the present invention includes a memory management unit (MMU) that is configured to manage sparse mappings. The MMU processes requests to translate virtual addresses to physical addresses based on page table entries (PTEs) that indicate a sparse status. If the MMU determines that the PTE does not include a mapping from a virtual address to a physical address, then the MMU responds to the request based on the sparse status. If the sparse status is active, then the MMU determines the physical address based on whether the type of the request is a write operation and, subsequently, generates an acknowledgement of the request. By contrast, if the sparse status is not active, then the MMU generates a page fault. Advantageously, the disclosed embodiments enable the computer system to manage sparse mappings without incurring the performance degradation associated with both page faults and conventional software-based sparse mapping management.

10. 发明授权

US09595075B2 Load/store operations in texture hardware 有权
标题翻译：在纹理硬件中加载/存储操作
公开(公告)号：US09595075B2
公开(公告)日：2017-03-14
申请号：US14038599
申请日：2013-09-26
申请人： NVIDIA CORPORATION
发明人： Steven J. Heinrich , Eric T. Anderson , Jeffrey A. Bolz , Jonathan Dunaisky , Ramesh Jandhyala , Joel McCormack , Alexander L. Minkin , Bryon S. Nordquist , Poornachandra Rao
IPC分类号： G06T15/04 , G06T1/20 , G06T1/60 , G09G5/36
CPC分类号： G06T1/60 , G06F2212/302 , G06T1/20 , G06T15/04 , G09G5/363
摘要： Approaches are disclosed for performing memory access operations in a texture processing pipeline having a first portion configured to process texture memory access operations and a second portion configured to process non-texture memory access operations. A texture unit receives a memory access request. The texture unit determines whether the memory access request includes a texture memory access operation. If the memory access request includes a texture memory access operation, then the texture unit processes the memory access request via at least the first portion of the texture processing pipeline, otherwise, the texture unit processes the memory access request via at least the second portion of the texture processing pipeline. One advantage of the disclosed approach is that the same processing and cache memory may be used for both texture operations and load/store operations to various other address spaces, leading to reduced surface area and power consumption.
摘要翻译：公开了用于在具有被配置为处理纹理存储器访问操作的第一部分的纹理处理流水线中执行存储器访问操作的方法和被配置为处理非纹理存储器访问操作的第二部分。纹理单元接收存储器访问请求。纹理单元确定存储器访问请求是否包括纹理存储器访问操作。如果存储器访问请求包括纹理存储器访问操作，则纹理单元至少通过纹理处理流水线的第一部分来处理存储器访问请求，否则，纹理单元至少经由第二部分处理存储器访问请求纹理处理流水线。所公开方法的一个优点是可以将相同的处理和高速缓冲存储器用于纹理操作和对各种其他地址空间的加载/存储操作，导致减少的表面积和功率消耗。

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