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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：US20190287294A1
公开(公告)日：2019-09-19
申请号：US16355214
申请日：2019-03-15
Applicant: NVIDIA Corporation
Inventor： Shiqiu Liu , Christopher Ryan Wyman , Jon Hasselgren , Jacob Munkberg , Ignacio Llamas
Abstract: Disclosed approaches may leverage the actual spatial and reflective properties of a virtual environment—such as the size, shape, and orientation of a bidirectional reflectance distribution function (BRDF) lobe of a light path and its position relative to a reflection surface, a virtual screen, and a virtual camera—to produce, for a pixel, an anisotropic kernel filter having dimensions and weights that accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface. In order to accomplish this, geometry may be computed that corresponds to a projection of a reflection of the BRDF lobe below the surface along a view vector to the pixel. Using this approach, the dimensions of the anisotropic filter kernel may correspond to the BRDF lobe to accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface.
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公开(公告)号：US09489245B2
公开(公告)日：2016-11-08
申请号：US13662279
申请日：2012-10-26
Applicant: NVIDIA Corporation
Inventor： Ignacio Llamas , Craig Ross Duttweiler , Jeffrey A. Bolz , Daniel Elliot Wexler
CPC classification number: G06F9/52
Abstract: One embodiment of the present invention enables threads executing on a processor to locally generate and execute work within that processor by way of work queues and command blocks. A device driver, as an initialization procedure for establishing memory objects that enable the threads to locally generate and execute work, generates a work queue, and sets a GP_GET pointer of the work queue to the first entry in the work queue. The device driver also, during the initialization procedure, sets a GP_PUT pointer of the work queue to the last free entry included in the work queue, thereby establishing a range of entries in the work queue into which new work generated by the threads can be loaded and subsequently executed by the processor. The threads then populate command blocks with generated work and point entries in the work queue to the command blocks to effect processor execution of the work stored in the command blocks.
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24.发明授权公开(公告)号：US12148088B2
公开(公告)日：2024-11-19
申请号：US18129334
申请日：2023-03-31
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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公开(公告)号：US12112428B2
公开(公告)日：2024-10-08
申请号：US18353809
申请日：2023-07-17
Applicant: NVIDIA Corporation
Inventor： Martin Stich , Ignacio Llamas , Steven Parker
CPC classification number: G06T15/83 , G06F9/54 , G06T15/005 , G06T15/06
Abstract: In various examples, shader bindings may be recorded in a shader binding table that includes shader records. Geometry of a 3D scene may be instantiated using object instances, and each may be associated with a respective set of the shader records using a location identifier of the set of shader records in memory. The set of shader records may represent shader bindings for an object instance under various predefined conditions. One or more of these predefined conditions may be implicit in the way the shader records are arranged in memory (e.g., indexed by ray type, by sub-geometry, etc.). For example, a section selector value (e.g., a section index) may be computed to locate and select a shader record based at least in part on a result of a ray tracing query (e.g., what sub-geometry was hit, what ray type was traced, etc.).
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Patent Agency Ranking
26.发明公开公开(公告)号：US20240312122A1
公开(公告)日：2024-09-19
申请号：US18184459
申请日：2023-03-15
Applicant: Nvidia Corporation
Inventor： Nicolas Moenne-Loccoz , Zan Gojcic , Gavriel State , Zian Wang , Ignacio Llamas
CPC classification number: G06T15/506 , G06T5/50 , G06V10/60 , G06V10/761 , G06V10/82 , G06T2207/20221
Abstract: Approaches presented herein provide for the generation of visual content, including different types of content representations from different sources, rendered to include consistent scene illumination for the various representations. A first render pass can produce a first image including only proxies of implicit representations (e.g., NeRF objects) under scene illumination. A second render pass can produce a second image that includes a representation of the explicit scene objects, as well as the proxies of the implicit representations, under the scene illumination, which produces secondary lighting effects. The first and second images are compared to determine irradiance ratio data for the various pixel locations. A third render pass can produce a third image that includes the implicit representations, which can have relighting performed according to the irradiance ratio data to include the secondary lighting effects. The implicit and explicit objects can then be composited to produce an image with consistent scene illumination.
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公开(公告)号：US11941745B2
公开(公告)日：2024-03-26
申请号：US17852132
申请日：2022-06-28
Applicant: NVIDIA Corporation
Inventor： Shiqiu Liu , Christopher Ryan Wyman , Jon Hasselgren , Jacob Munkberg , Ignacio Llamas
CPC classification number: G06T15/06 , G06T5/002 , G06T5/20 , G06T15/506 , G06T15/60 , G06T2210/21
Abstract: Disclosed approaches may leverage the actual spatial and reflective properties of a virtual environment—such as the size, shape, and orientation of a bidirectional reflectance distribution function (BRDF) lobe of a light path and its position relative to a reflection surface, a virtual screen, and a virtual camera—to produce, for a pixel, an anisotropic kernel filter having dimensions and weights that accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface. In order to accomplish this, geometry may be computed that corresponds to a projection of a reflection of the BRDF lobe below the surface along a view vector to the pixel. Using this approach, the dimensions of the anisotropic filter kernel may correspond to the BRDF lobe to accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface.
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公开(公告)号：US11373359B2
公开(公告)日：2022-06-28
申请号：US16935431
申请日：2020-07-22
Applicant: NVIDIA Corporation
Inventor： Shiqiu Liu , Christopher Ryan Wyman , Jon Hasselgren , Jacob Munkberg , Ignacio Llamas
Abstract: Disclosed approaches may leverage the actual spatial and reflective properties of a virtual environment—such as the size, shape, and orientation of a bidirectional reflectance distribution function (BRDF) lobe of a light path and its position relative to a reflection surface, a virtual screen, and a virtual camera—to produce, for a pixel, an anisotropic kernel filter having dimensions and weights that accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface. In order to accomplish this, geometry may be computed that corresponds to a projection of a reflection of the BRDF lobe below the surface along a view vector to the pixel. Using this approach, the dimensions of the anisotropic filter kernel may correspond to the BRDF lobe to accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface.
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29.发明授权公开(公告)号：US11200725B2
公开(公告)日：2021-12-14
申请号：US17030008
申请日：2020-09-23
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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30.发明申请公开(公告)号：US20210005010A1
公开(公告)日：2021-01-07
申请号：US17030008
申请日：2020-09-23
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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