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1. 发明授权

US10204441B2 Apparatus and method for hierarchical beam tracing and packet compression in a ray tracing system 有权
公开(公告)号：US10204441B2
公开(公告)日：2019-02-12
申请号：US15482704
申请日：2017-04-07
申请人： Ingo Wald , Gabor Liktor , Carsten Benthin , Carson Brownlee , Johannes Guenther , Jefferson D. Amstutz
发明人： Ingo Wald , Gabor Liktor , Carsten Benthin , Carson Brownlee , Johannes Guenther , Jefferson D. Amstutz
IPC分类号： G06T15/06 , G06T9/00 , G06T15/00 , G06T15/04 , G06T15/80 , G06T17/10
摘要： An apparatus and method for compressing ray tracing data prior to transmission between nodes. For example, one embodiment of an apparatus comprises: a first node comprising a first ray tracing engine, the first node communicatively coupled to a second node comprising a second ray tracing engine; first compression circuitry coupled to the first ray tracing engine, the first compression circuitry to perform compression on ray tracing data of the first ray tracing engine to produce a first compressed stream of ray tracing data; and interface circuitry to transmit the first compressed stream of ray tracing data from the first node to the second node.

2. 发明申请

US20180293783A1 APPARATUS AND METHOD FOR HIERARCHICAL BEAM TRACING AND PACKET COMPRESSION IN A RAY TRACING SYSTEM 审中-公开
公开(公告)号：US20180293783A1
公开(公告)日：2018-10-11
申请号：US15482704
申请日：2017-04-07
申请人： INGO WALD , Gabor Liktor , Carsten Benthin , Carson Brownlee , Johannes Guenther , Jefferson D. Amstutz
发明人： INGO WALD , Gabor Liktor , Carsten Benthin , Carson Brownlee , Johannes Guenther , Jefferson D. Amstutz
IPC分类号： G06T15/06
CPC分类号： G06T15/06 , G06T9/00 , G06T15/005
摘要： An apparatus and method for compressing ray tracing data prior to transmission between nodes. For example, one embodiment of an apparatus comprises: a first node comprising a first ray tracing engine, the first node communicatively coupled to a second node comprising a second ray tracing engine; first compression circuitry coupled to the first ray tracing engine, the first compression circuitry to perform compression on ray tracing data of the first ray tracing engine to produce a first compressed stream of ray tracing data; and interface circuitry to transmit the first compressed stream of ray tracing data from the first node to the second node.

3. 发明申请

US20180292897A1 APPARATUS AND METHOD FOR FOVEATED RENDERING, BIN COMPARISON AND TBIMR MEMORY-BACKED STORAGE FOR VIRTUAL REALITY IMPLEMENTATIONS 审中-公开
公开(公告)号：US20180292897A1
公开(公告)日：2018-10-11
申请号：US15482694
申请日：2017-04-07
申请人： INGO WALD , BRENT E. INSKO , PRASOONKUMAR SURTI , KUN TIAN , ADAM T. LAKE , YAO ZU EDDIE DONG , PETER L. DOYLE
发明人： INGO WALD , BRENT E. INSKO , PRASOONKUMAR SURTI , KUN TIAN , ADAM T. LAKE , YAO ZU EDDIE DONG , PETER L. DOYLE
IPC分类号： G06F3/01 , G06T15/80 , G06T15/04 , G06T15/06
摘要： One embodiment of a virtual reality apparatus comprises: a graphics processing engine comprising a plurality of graphics processing stages, the graphics processing engine to render a plurality of image frames for left and right displays of a head mounted display (HMD); and foveation control hardware logic to independently control two or more of the plurality of graphics processing stages based on feedback received from an eye tracking module of the HMD, the feedback indicating a foveated region selected based on a current or anticipated direction of a user's gaze, the foveation control hardware logic to cause the two or more of the graphics processing stages to process the foveated region differently than other regions of the image frames.

4. 发明申请

US20180190013A1 APPARATUS AND METHOD FOR RENDERING ADAPTIVE MESH REFINEMENT (AMR) DATA 审中-公开
公开(公告)号：US20180190013A1
公开(公告)日：2018-07-05
申请号：US15394786
申请日：2016-12-29
申请人： Ingo Wald
发明人： Ingo Wald
IPC分类号： G06T17/00 , G06T15/06
CPC分类号： G06T17/005 , G06T15/06
摘要： An apparatus and method are described for rendering adaptive mesh refinement data. For example, one embodiment of a graphics processing apparatus comprises: a tree data structure generator to transform adaptive mesh refinement (AMR) data into a multi-octree or kd-tree data structure, respectively; an interpolator to implement an interpolation scheme based on the multi-octree or kd-tree data structure to generate interpolated results, the interpolation scheme using repeated linear interpolation; and a ray tracing-based renderer to use the interpolated results to render image frames using ray tracing techniques.

5. 发明授权

US08259105B2 Ray tracing a three-dimensional scene using a hierarchical data structure 有权
标题翻译：光线使用分层数据结构跟踪三维场景
公开(公告)号：US08259105B2
公开(公告)日：2012-09-04
申请号：US12374392
申请日：2007-07-16
申请人： Ingo Wald , Solomon Boulos , Peter Shirley
发明人： Ingo Wald , Solomon Boulos , Peter Shirley
IPC分类号： G06T17/00
CPC分类号： G06T17/005 , G06T15/06
摘要： Ray tracing a three-dimensional scene made up of geometric primitives that are spatially partitioned into a hierarchical data structure. One example embodiment is a method for ray tracing a three-dimensional scene made up of geometric primitives that are spatially partitioned into a hierarchical data structure. In this example embodiment, the hierarchical data structure includes at least a parent node and a corresponding plurality of child nodes. The method includes a first act of determining that a first active ray in the packet hits the parent node and a second act of descending to each of the plurality of child nodes.
摘要翻译：光线跟踪由空间分割为分层数据结构的几何图元组成的三维场景。一个示例实施例是用于光线跟踪由空间分割成分层数据结构的几何图元组成的三维场景的方法。在该示例实施例中，分层数据结构至少包括父节点和对应的多个子节点。该方法包括确定分组中的第一活动射线击中父节点的第一动作以及下降到多个子节点中的每一个的第二动作。

6. 发明申请

US20100060634A1 RAY TRACING A THREE-DIMENSIONAL SCENE USING A HIERARCHICAL DATA STRUCTURE 有权
标题翻译：使用分层数据结构跟踪三维场景
公开(公告)号：US20100060634A1
公开(公告)日：2010-03-11
申请号：US12374392
申请日：2007-07-16
申请人： Ingo Wald , Solomon Boulos , Peter Shirley
发明人： Ingo Wald , Solomon Boulos , Peter Shirley
IPC分类号： G06T17/00
CPC分类号： G06T17/005 , G06T15/06
摘要： Ray tracing a three-dimensional scene made up of geometric primitives that are spatially partitioned into a hierarchical data structure. One example embodiment is a method for ray tracing a three-dimensional scene made up of geometric primitives that are spatially partitioned into a hierarchical data structure. In this example embodiment, the hierarchical data structure includes at least a parent node and a corresponding plurality of child nodes. The method includes a first act of determining that a first active ray in the packet hits the parent node and a second act of descending to each of the plurality of child nodes.
摘要翻译：光线跟踪由空间分割为分层数据结构的几何图元组成的三维场景。一个示例实施例是用于光线跟踪由空间分割成分层数据结构的几何图元组成的三维场景的方法。在该示例实施例中，分层数据结构至少包括父节点和对应的多个子节点。该方法包括确定分组中的第一活动射线击中父节点的第一动作以及下降到多个子节点中的每一个的第二动作。

7. 发明申请

US20180293784A1 RAY TRACING APPARATUS AND METHOD FOR MEMORY ACCESS AND REGISTER OPERATIONS 审中-公开
公开(公告)号：US20180293784A1
公开(公告)日：2018-10-11
申请号：US15482709
申请日：2017-04-07
申请人： CARSTEN BENTHIN , INGO WALD , GABOR LIKTOR , JOHANNES GUENTHER , ELMOUSTAPHA OULD-AHMED-VALL
发明人： CARSTEN BENTHIN , INGO WALD , GABOR LIKTOR , JOHANNES GUENTHER , ELMOUSTAPHA OULD-AHMED-VALL
IPC分类号： G06T15/06 , G06T17/10 , G06T9/00 , G06T15/08 , G06T15/00
摘要： An apparatus and method for performing BVH compression and decompression concurrently with stores and loads, respectively. For example, one embodiment comprises: bounding volume hierarchy (BVH) construction circuitry to build a BVH based on a set of input primitives, the BVH comprising a plurality of uncompressed coordinates; traversal/intersection circuitry to traverse one or more rays through the BVH and determine intersections with the set of input primitives using the uncompressed coordinates; store with compression circuitry to compress the BVH including the plurality of uncompressed coordinates to generate a compressed BVH with compressed coordinates and to store the compressed BVH to a memory subsystem; and load with decompression circuitry to decompress the BVH including the compressed coordinates to generate a decompressed BVH with the uncompressed coordinates and to load the decompressed BVH with uncompressed coordinates to a cache and/or a set of registers accessible by the traversal/intersection circuitry.

8. 发明申请

US20180286103A1 TEMPORAL DATA STRUCTURES IN A RAY TRACING ARCHITECTURE 审中-公开
公开(公告)号：US20180286103A1
公开(公告)日：2018-10-04
申请号：US15477035
申请日：2017-04-01
申请人： SVEN WOOP , ATTILA TAMAS AFRA , CARSTEN BENTHIN , INGO WALD , JOHANNES GUENTHER
发明人： SVEN WOOP , ATTILA TAMAS AFRA , CARSTEN BENTHIN , INGO WALD , JOHANNES GUENTHER
IPC分类号： G06T15/00 , G06T15/06 , G06T1/20
CPC分类号： G06T15/005 , G06T1/20 , G06T15/06
摘要： A graphics processing apparatus comprising bounding volume hierarchy (BVH) construction circuitry to perform a spatial analysis and temporal analysis related to a plurality of input primitives and responsively generate a BVH comprising spatial, temporal, and spatial-temporal components that are hierarchically arranged, wherein the spatial components include a plurality of spatial nodes with children, the spatial nodes bounding the children using spatial bounds, and the temporal components comprise temporal nodes with children, the temporal nodes bounding their children using temporal bounds and the spatial-temporal components comprise spatial-temporal nodes with children, the spatial-temporal nodes bounding their children using spatial and temporal bounds; and ray traversal/intersection circuitry to traverse a ray or a set of rays through the BVH in accordance with the spatial and temporal components.

9. 发明申请

US20170372448A1 Reducing Memory Access Latencies During Ray Traversal 审中-公开
公开(公告)号：US20170372448A1
公开(公告)日：2017-12-28
申请号：US15194646
申请日：2016-06-28
申请人： Ingo Wald , Carsten Benthin , Sven Woop
发明人： Ingo Wald , Carsten Benthin , Sven Woop
IPC分类号： G06T1/60 , G06F12/0811 , G06T1/20 , G06F12/0862 , G06T15/06
CPC分类号： G06T1/60 , G06F12/0207 , G06F12/0811 , G06F12/0862 , G06F2212/1024 , G06F2212/454 , G06F2212/455 , G06F2212/602 , G06F2212/62 , G06T1/20 , G06T15/005 , G06T15/06 , G06T17/005 , G06T2210/12
摘要： While prefetching data for a second fiber, a hierarchical data structure is traversed using a first fiber after deferring traversal for the second fiber. Then context is switched to the second fiber, and the hierarchical data structure is traversed using second fiber while prefetching data for another fiber.

10. 发明授权

US09092901B2 Parallel grid population 有权
标题翻译：平行网格人口
公开(公告)号：US09092901B2
公开(公告)日：2015-07-28
申请号：US12515808
申请日：2007-11-29
申请人： Ingo Wald , Santiago Ize
发明人： Ingo Wald , Santiago Ize
IPC分类号： G06T15/06
CPC分类号： G06T15/06
摘要： Parallel population of a grid with a plurality of objects using a plurality of processors. One example embodiment is a method for parallel population of a grid with a plurality of objects using a plurality of processors. The method includes a first act of dividing a grid into n distinct grid portions, where n is the number of processors available for populating the grid. The method also includes acts of dividing a plurality of objects into n distinct sets of objects, assigning a distinct set of objects to each processor such that each processor determines by which distinct grid portion(s) each object in its distinct set of objects is at least partially bounded, and assigning a distinct grid portion to each processor such that each processor populates its distinct grid portion with any objects that were previously determined to be at least partially bounded by its distinct grid portion.
摘要翻译：使用多个处理器的具有多个对象的网格的平行总体。一个示例性实施例是使用多个处理器的具有多个对象的网格的并行总体的方法。该方法包括将网格划分为n个不同网格部分的第一动作，其中n是可用于填充网格的处理器的数量。该方法还包括将多个对象划分为n个不同对象集合的动作，向每个处理器分配一组不同的对象，使得每个处理器确定其不同对象组中的每个对象的哪个不同的网格部分位于并且将不同的网格部分分配给每个处理器，使得每个处理器用先前确定为至少部分地由其不同的网格部分界定的任何对象填充其不同的网格部分。

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