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21.发明授权公开(公告)号：US11455768B2
公开(公告)日：2022-09-27
申请号：US17111844
申请日：2020-12-04
Applicant: NVIDIA Corporation
Inventor： Greg Muthler , Ronald Charles Babich, Jr. , William Parsons Newhall, Jr. , Peter Nelson , James Robertson , John Burgess
Abstract: In a ray tracer, to prevent any long-running query from hanging the graphics processing unit, a traversal coprocessor provides a preemption mechanism that will allow rays to stop processing or time out early. The example non-limiting implementations described herein provide such a preemption mechanism, including a forward progress guarantee, and additional programmable timeout options that can be time or cycle based. Those programmable options provide a means for quality of service timing guarantees for applications such as virtual reality (VR) that have strict timing requirements.
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公开(公告)号：US11164360B2
公开(公告)日：2021-11-02
申请号：US16919700
申请日：2020-07-02
Applicant: NVIDIA Corporation
Inventor： Samuli Laine , Tero Karras , Greg Muthler , William Parsons Newhall , Ronald Charles Babich , Ignacio Llamas , John Burgess
Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include opaque and alpha triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to determine primitives intersected by the ray, and return intersection information to a streaming multiprocessor for further processing. The hardware-based traversal coprocessor is configured to provide a deterministic result of intersected triangles regardless of the order that the memory subsystem returns triangle range blocks for processing, while opportunistically eliminating alpha intersections that lie further along the length of the ray than closer opaque intersections.
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公开(公告)号：US10810785B2
公开(公告)日：2020-10-20
申请号：US16101206
申请日：2018-08-10
Applicant: NVIDIA Corporation
Inventor： Greg Muthler , Ronald Charles Babich, Jr. , William Parsons Newhall, Jr. , Peter Nelson , James Robertson , John Burgess
Abstract: In a ray tracer, to prevent any long-running query from hanging the graphics processing unit, a traversal coprocessor provides a preemption mechanism that will allow rays to stop processing or time out early. The example non-limiting implementations described herein provide such a preemption mechanism, including a forward progress guarantee, and additional programmable timeout options that can be time or cycle based. Those programmable options provide a means for quality of service timing guarantees for applications such as virtual reality (VR) that have strict timing requirements.
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公开(公告)号：US20230298258A1
公开(公告)日：2023-09-21
申请号：US18198949
申请日：2023-05-18
Applicant: NVIDIA Corporation
Inventor： Samuli LAINE , Tero Karras , Timo Aila , Robert Ohannessian , William Parsons Newhall, JR. , Greg Muthler , Ian Kwong , Peter Nelson , John Burgess
CPC classification number: G06T15/06 , G06T15/005
Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to properly handle numerically challenging computations at or near edges and/or vertices of primitives and/or ensure that a single intersection is reported when a ray intersects a surface formed by primitives at or near edges and/or vertices of the primitives.
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Patent Agency Ranking
公开(公告)号：US20220230380A1
公开(公告)日：2022-07-21
申请号：US17716599
申请日：2022-04-08
Applicant: NVIDIA Corporation
Inventor： Samuli Laine , Tero Karras , Timo Aila , Robert Ohannessian , William Parsons Newhall, JR. , Greg Muthler , Ian Kwong , Peter Nelson , John Burgess
Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to properly handle numerically challenging computations at or near edges and/or vertices of primitives and/or ensure that a single intersection is reported when a ray intersects a surface formed by primitives at or near edges and/or vertices of the primitives.
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26.发明申请公开(公告)号：US20220058856A1
公开(公告)日：2022-02-24
申请号：US17520100
申请日：2021-11-05
Applicant: NVIDIA Corporation
Inventor： Greg Muthler , Tero Karras , Samuli Laine , William Parsons Newhall, JR. , Ronald Charles Babich, JR. , John Burgess , Ignacio Llamas
IPC: G06T15/06
Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include opaque and alpha triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to determine primitives intersected by the ray, and return intersection information to a streaming multiprocessor for further processing. The hardware-based traversal coprocessor is configured to omit reporting of one or more primitives the ray is determined to intersect. The omitted primitives include primitives which are provably capable of being omitted without a functional impact on visualizing the virtual scene.
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27.发明申请公开(公告)号：US20210090319A1
公开(公告)日：2021-03-25
申请号：US17111844
申请日：2020-12-04
Applicant: NVIDIA Corporation
Inventor： Greg Muthler , Ronald Charles Babich, JR. , William Parsons Newhall, JR. , Peter Nelson , James Robertson , John Burgess
Abstract: In a ray tracer, to prevent any long-running query from hanging the graphics processing unit, a traversal coprocessor provides a preemption mechanism that will allow rays to stop processing or time out early. The example non-limiting implementations described herein provide such a preemption mechanism, including a forward progress guarantee, and additional programmable timeout options that can be time or cycle based. Those programmable options provide a means for quality of service timing guarantees for applications such as virtual reality (VR) that have strict timing requirements.
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公开(公告)号：US10740952B2
公开(公告)日：2020-08-11
申请号：US16101196
申请日：2018-08-10
Applicant: NVIDIA Corporation
Inventor： Samuli Laine , Tero Karras , Greg Muthler , William Parsons Newhall, Jr. , Ronald Charles Babich , Ignacio Llamas , John Burgess
Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include opaque and alpha triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to determine primitives intersected by the ray, and return intersection information to a streaming multiprocessor for further processing. The hardware-based traversal coprocessor is configured to provide a deterministic result of intersected triangles regardless of the order that the memory subsystem returns triangle range blocks for processing, while opportunistically eliminating alpha intersections that lie further along the length of the ray than closer opaque intersections.
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公开(公告)号：US20200051314A1
公开(公告)日：2020-02-13
申请号：US16101148
申请日：2018-08-10
Applicant: NVIDIA Corporation
Inventor： Samuli Laine , Tero Karras , Timo Aila , Robert Ohannessian , William Parsons Newhall, JR. , Greg Muthler , Ian Kwong , Peter Nelson , John Burgess
Abstract: A hardware-based traversal coprocessor provides acceleration of tree traversal operations searching for intersections between primitives represented in a tree data structure and a ray. The primitives may include triangles used in generating a virtual scene. The hardware-based traversal coprocessor is configured to properly handle numerically challenging computations at or near edges and/or vertices of primitives and/or ensure that a single intersection is reported when a ray intersects a surface formed by primitives at or near edges and/or vertices of the primitives.
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