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1.发明公开公开(公告)号：US20240362029A1
公开(公告)日：2024-10-31
申请号：US18765148
申请日：2024-07-05
IPC分类号： G06F9/4401 , G06F9/30 , G06T1/20
CPC分类号： G06F9/4411 , G06F9/30101 , G06T1/20
摘要： A computer system has a plurality of operating systems, each operating system including a graphics processing unit (GPU) driver; a GPU including GPU firmware for controlling the execution of tasks at the graphics processing unit and, for each operating system: a firmware state register modifiable by the GPU firmware and indicating whether the GPU firmware is online; an OS state register modifiable by a GPU driver and indicating whether the GPU driver is online; a memory management unit mediating access to GPU registers such that each operating system can access its respective registers but not those of other operating systems; One of the GPU drivers is a host GPU driver initialising the GPU and bringing the GPU firmware online. Each GPU driver submits tasks for processing only if its respective firmware state register indicates that the GPU firmware is online. The GPU processes tasks for an operating system if the respective OS state register of that operating system indicates that the GPU driver is online.
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公开(公告)号：US12112410B2
公开(公告)日：2024-10-08
申请号：US17752458
申请日：2022-05-24
发明人： Casper Van Benthem
CPC分类号： G06T11/40 , G06T1/20 , G06T7/13 , G06T15/005 , G06T15/503 , G06T15/80 , G09G5/363 , G06T2207/20021 , G06T2210/12 , G09G2360/122 , G06T15/005 , G06T11/40 , G06T1/20 , G06T15/80 , G06T7/13 , G06T15/503 , G06T2207/20021 , G06T2210/12 , G09G5/363 , G09G2360/122
摘要： Conservative rasterization hardware comprises hardware logic arranged to perform an edge test calculation for each edge of a primitive and for two corners of each pixel in a microtile. The two corners that are used are selected based on the gradient of the edge and the edge test result for one corner is the inner coverage result and the edge test result for the other corner is the outer coverage result for the pixel. An overall outer coverage result for the pixel and the primitive is calculated by combining the outer coverage results for the pixel and each of the edges of the primitive in an AND gate. The overall inner coverage result for the pixel is calculated in a similar manner.
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公开(公告)号：US12112197B2
公开(公告)日：2024-10-08
申请号：US17953821
申请日：2022-09-27
发明人： Michael John Livesley , Ian King , Alistair Goudie
CPC分类号： G06F9/4881 , G06F9/462
摘要： A processor has a register bank to which software writes descriptors specifying tasks to be processed by a hardware pipeline. The register bank includes a plurality of register sets, each for holding the descriptor of a task. The processor includes a first selector operable to connect the execution logic to a selected one of the register sets and thereby enable the software to write successive ones of said descriptors to different ones of said register sets. The processor also includes a second selector operable to connect the hardware pipeline to a selected one of the register sets. The processor further comprises control circuitry configured to control the hardware pipeline to begin processing a current task based on the descriptor in a current one of the register sets while the software is writing the descriptor of another task to another of the register sets.
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公开(公告)号：US20240320781A1
公开(公告)日：2024-09-26
申请号：US18736418
申请日：2024-06-06
CPC分类号： G06T1/20 , G06F9/44505 , G06T1/60 , G06F11/1004
摘要： A method of detecting an error at a graphics processing unit causes an instruction including a request for a response from a graphics processing unit to be provided to the graphics processing unit. A timer being configured to expire after a time period is initialised, and during the time period the graphics processing unit is monitored for the response from the graphics processing unit. An error is determined to have occurred in response to determining that no response was received from the graphics processing unit before the timer expired.
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公开(公告)号：US20240320299A1
公开(公告)日：2024-09-26
申请号：US18591869
申请日：2024-02-29
IPC分类号： G06F17/16
CPC分类号： G06F17/16
摘要： Methods of implementing a standard deconvolution on a graphics processing unit, the standard deconvolution being representable as a direct convolution between an input tensor to the standard deconvolution and each of a plurality of a sub-filters, each sub-filter of the plurality of sub-filters comprising a subset of weights of a filter of the standard deconvolution. The methods comprising: receiving, at the graphics processing unit, the input tensor in a dense format; identifying, at the graphics processing unit, active positions of the received input tensor; performing, at the graphics processing unit, an indexed unfold operation on the input tensor based on the identified active positions to generate an input matrix comprising elements of the input tensor in each non-zero sub-window of the input tensor; and performing, at the graphics processing unit, a matrix multiplication between a weight matrix and the input matrix to generate an output matrix that comprises elements of an output tensor of the standard deconvolution that are based on the non-zero sub-windows of the input tensor.
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公开(公告)号：US20240319272A1
公开(公告)日：2024-09-26
申请号：US18588819
申请日：2024-02-27
IPC分类号： G01R31/3185 , G01R31/317
CPC分类号： G01R31/318525 , G01R31/31725
摘要： A set of payload flip-flops receives an input instance of a payload, and outputs an output instance from which a first instance of an error check signal is generated. One or more error check flip-flops receive the first instance and output a second instance. The input payload instance is clocked into the payload flip-flops if a payload enable signal is asserted, and the first error-check signal instance is clocked into the error check flip-flops if an error check enable signal is asserted. The input payload instance is input to the set of payload flip-flops over two clock cycles, and the payload enable signal is asserted for the two clock cycles. The error check enable signal is asserted on the second cycle. The first instance of the error check signal is compared with the second instance and an error signal is asserted if they do not match.
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公开(公告)号：US20240314323A1
公开(公告)日：2024-09-19
申请号：US18671950
申请日：2024-05-22
IPC分类号： H04N19/132 , G06T1/20 , H04N19/176 , H04N19/42 , H04N19/89
CPC分类号： H04N19/132 , G06T1/20 , H04N19/176 , H04N19/42 , H04N19/89
摘要： A method of converting 10-bit pixel data (e.g. 10:10:10:2 data) into 8-bit pixel data involves converting the 10-bit values to 7-bits or 8-bits and generating error values for each of the converted values. Two of the 8-bit output channels comprise a combination of a converted 7-bit value and one of the bits from the fourth input channel. A third 8-bit output channel comprises the converted 8-bit value and the fourth 8-bit output channel comprises the error values. In various examples, the bits of the error values may be interleaved when they are packed into the fourth output channel.
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公开(公告)号：US20240303905A1
公开(公告)日：2024-09-12
申请号：US18599607
申请日：2024-03-08
发明人： Peter Smith-Lacey
CPC分类号： G06T15/06 , G06T17/20 , G06T2210/12 , G06T2210/21 , G06T2210/36
摘要： A method of performing tessellation of a patch in a ray tracing system for rendering an image within a scene. The patch represents a portion of a surface of an object within the scene, and the object is defined in 3D space using a first space-coordinate system. A bounding volume that contains the patch is determined, and determining whether a ray intersects the bounding volume. In response to determining that the ray intersects the bounding volume, and in dependence on tessellation indications associated with the patch, the patch is subdivided one or more times to obtain a plurality of patch sub-units, wherein one or more of the patch sub-units does not represent a primitive. The method includes, subsequent to the subdividing of the patch, determining that at least one of the patch sub-units comprises a primitive, and performing an intersection test between the ray and the primitive for use in rendering the image of the scene.
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公开(公告)号：US12079917B2
公开(公告)日：2024-09-03
申请号：US18213609
申请日：2023-06-23
发明人： James Glanville
CPC分类号： G06T15/005 , G06F8/41 , G06F9/30101 , G06T1/60 , G06T15/80 , G09G5/363
摘要： A rendering optimisation identifies a draw call within a current render (which may be the first draw call in the render or a subsequent draw call in the render) and analyses a last shader in the series of shaders used by the draw call to determine whether the last shader samples from the one or more buffers at coordinates matching a current fragment location. If this determination is positive, the method further recompiles the last shader to replace an instruction that reads data from one of the one or more buffers at coordinates matching a current fragment location with an instruction that reads from the one or more buffers at coordinates stored in on-chip registers.
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公开(公告)号：US12073593B2
公开(公告)日：2024-08-27
申请号：US17870623
申请日：2022-07-21
发明人： Rostam King
摘要： A method and decoding unit for decoding a compressed data structure that encodes a set of Haar coefficients for a 2×2 quad of pixels of a block of pixels. The set of Haar coefficients comprises a plurality of differential coefficients and an average coefficient. A first portion of the compressed data structure encodes the differential coefficients for the 2×2 quad of pixels. A second portion of the compressed data structure encodes the average coefficient for the 2×2 quad of pixels. The first portion of the compressed data structure is used to determine signs and exponents differential coefficients which are non-zero. The second portion of the compressed data structure is used to determine a representation of the average coefficient. The result of a weighted sum of the differential coefficients and the average coefficient for the 2×2 quad of pixels is determined using: (i) the determined signs and exponents for the differential coefficients which are non-zero, (ii) the determined representation of the average coefficient, and (iii) respective weights for the differential coefficients. The determined result is used to determine the decoded value. The determined decoded value is outputted.
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