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1. 发明申请

US20180300939A1 APPARATUS AND METHOD FOR EFFICIENTLY MERGING BOUNDING VOLUME HIERARCHY DATA 审中-公开
公开(公告)号：US20180300939A1
公开(公告)日：2018-10-18
申请号：US15488359
申请日：2017-04-14
申请人： CARSTEN BENTHIN , SVEN WOOP
发明人： CARSTEN BENTHIN , SVEN WOOP
IPC分类号： G06T15/06 , G06T15/10 , G06T15/50
摘要： An apparatus and method for efficiently reconstructing a BVH. For example, one embodiment of a method comprises: constructing an object bounding volume hierarchy (BVH) for each object in a scene, each object BVH including a root node and one or more child nodes based on primitives included in each object; constructing a top-level BVH using the root nodes of the individual object BVHs; performing an analysis of the top-level BVH to determine whether the top-level BVH comprises a sufficiently efficient arrangement of nodes within its hierarchy; and reconstructing at least a portion of the top-level BVH if a more efficient arrangement of nodes exists, wherein reconstructing comprises rebuilding the portion of the top-level BVH until one or more stopping criteria have been met, the stopping criteria defined to prevent an entire rebuilding of the top-level BVH.

2. 发明授权

US08115763B2 Device for the photorealistic representation of dynamic, complex, three-dimensional scenes by means of ray tracing 有权
标题翻译：用于通过光线跟踪的动态，复杂，三维场景的逼真表现的设备
公开(公告)号：US08115763B2
公开(公告)日：2012-02-14
申请号：US10589794
申请日：2005-02-16
申请人： Sven Woop , Philip Slussallek , Jörg Schmittler
发明人： Sven Woop , Philip Slussallek , Jörg Schmittler
IPC分类号： G06T17/00
CPC分类号： G06T15/50 , G06T15/005 , G06T15/06
摘要： The invention relates to a device for the photorealistic representation of dynamic, complex, three-dimensional scenes by means of ray-tracing. Said device comprises at least one programmable ray-tracing processor in which are implemented: special traversing instructions and/or vector arithmetic instructions and/or instructions for establishing ray-tracing acceleration structures and/or at least one decision unit (mailbox), which prevents objects or triangles that have already been intersected by a ray cast during ray tracing from being intersected again by the ray. The inventive device is organized such as to allow a plurality of threads to be processed in parallel and to allow a plurality of threads to be automatically processed synchronously, the device being provided with an n-level cache hierarchy and/or virtual memory management and/or a direct link to the main memory.
摘要翻译：本发明涉及一种用于通过光线跟踪的动态，复杂的三维场景的逼真表现的装置。所述设备包括至少一个可编程射线跟踪处理器，其中实现：用于建立射线跟踪加速结构的特殊横穿指令和/或矢量运算指令和/或指令和/或至少一个决定单元（邮箱），其可防止在射线跟踪期间已经被射线投射相交的物体或三角形被光线再次相交。本发明的设备被组织成允许并行处理多个线程并且允许多个线程被同步地自动处理，该设备被提供有n级高速缓存层级和/或虚拟存储器管理和/ 或直接链接到主内存。

3. 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.

4. 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.

5. 发明申请

US20070182732A1 Device for the photorealistic representation of dynamic, complex, three-dimensional scenes by means of ray tracing 有权
标题翻译：用于通过光线跟踪的动态，复杂，三维场景的逼真表现的设备
公开(公告)号：US20070182732A1
公开(公告)日：2007-08-09
申请号：US10589794
申请日：2005-02-16
申请人： Sven Woop , Philip Slussallek , Jorg Schmittler
发明人： Sven Woop , Philip Slussallek , Jorg Schmittler
IPC分类号： G06T15/00 , G06T17/00
CPC分类号： G06T15/50 , G06T15/005 , G06T15/06
摘要： The invention relates to a device for the photorealistic representation of dynamic, complex, three-dimensional scenes by means of ray-tracing. Said device comprises at least one programmable ray-tracing processor in which are implemented: special traversing instructions and/or vector arithmetic instructions and/or instructions for establishing ray-tracing acceleration structures and/or at least one decision unit (mailbox), which prevents objects or triangles that have already been intersected by a ray cast during ray tracing from being intersected again by the ray. The inventive device is organized such as to allow a plurality of threads to be processed in parallel and to allow a plurality of threads to be automatically processed synchronously, the device being provided with an n-level cache hierarchy and/or virtual memory management and/or a direct link to the main memory.
摘要翻译：本发明涉及一种用于通过光线跟踪的动态，复杂的三维场景的逼真表现的装置。所述设备包括至少一个可编程射线跟踪处理器，其中实现：用于建立射线跟踪加速结构的特殊横穿指令和/或矢量运算指令和/或指令和/或至少一个决定单元（邮箱），其可防止在射线跟踪期间已经被射线投射相交的物体或三角形被光线再次相交。本发明的设备被组织成允许并行处理多个线程并且允许多个线程被同步地自动处理，该设备被提供有n级高速缓存层级和/或虚拟存储器管理和/ 或直接链接到主内存。

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