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61. 发明授权

US07634527B2 Reciprocal estimate computation methods and apparatus 有权
标题翻译：互惠估算计算方法和装置
公开(公告)号：US07634527B2
公开(公告)日：2009-12-15
申请号：US11282032
申请日：2005-11-17
申请人： Sherman Matthew Dance , Andrew Patrick Freemyer , Matthew Ray Tubbs
发明人： Sherman Matthew Dance , Andrew Patrick Freemyer , Matthew Ray Tubbs
IPC分类号： G06F7/38
CPC分类号： G06F7/4873 , G06F7/49915 , G06F2207/3884 , G06F2207/5356
摘要： In a first aspect, a first method of reciprocal estimate computation using floating point pipeline logic is provided. The first method includes the steps of (1) receiving an input value having an exponent and a mantissa when represented as a floating point number on which a reciprocal estimate computation is to be performed; (2) determining whether the exponent is one of a plurality of predetermined numbers; and (3) if the exponent is one of the plurality of predetermined numbers, adjusting at least one of a plurality of modified mantissa bits (e.g., mantissa bits internal to leading zero anticipator (LZA) logic) and the exponent so as to prevent an underflow result of the reciprocal estimate computation. Numerous other aspects are provided.
摘要翻译：在第一方面，提供了使用浮点流水线逻辑的互易估计计算的第一种方法。第一种方法包括以下步骤：（1）当表示为要进行相互估计计算的浮点数时，接收具有指数和尾数的输入值; （2）确定指数是否是多个预定数字之一; 和（3）如果指数是多个预定数目中的一个，则调整多个经修改的尾数位（例如，前导零预测器（LZA）逻辑内部的尾数位）和指数中的至少一个，以防止倒数估计计算的下溢结果。提供了许多其他方面。

62. 发明授权

US08248415B2 User-defined non-visible geometry featuring ray filtering 有权
标题翻译：用户定义的非可见几何特征是射线过滤
公开(公告)号：US08248415B2
公开(公告)日：2012-08-21
申请号：US12360989
申请日：2009-01-28
申请人： Eric Oliver Mejdrich , Paul Emery Schardt , Robert Allen Shearer , Matthew Ray Tubbs
发明人： Eric Oliver Mejdrich , Paul Emery Schardt , Robert Allen Shearer , Matthew Ray Tubbs
IPC分类号： G06T15/50 , G06T15/00 , G06T15/40 , G06T15/10 , G06T15/20 , G06T15/06
CPC分类号： G06T15/06
摘要： A method, system and computer program product for managing secondary rays during ray-tracing are presented. A non-visible unidirectional ray tracing object logically surrounds a user-selected virtual object in a computer generated illustration. This unidirectional ray tracing object prevents secondary tracing rays from emanating from the user-selected virtual object during ray tracing.
摘要翻译：提出了一种在射线跟踪期间管理二次射线的方法，系统和计算机程序产品。在计算机生成的图示中，不可见的单向光线跟踪对象在逻辑上围绕用户选择的虚拟对象。这种单向光线跟踪对象可防止在光线跟踪期间从用户选择的虚拟对象发出辅助跟踪光线。

63. 发明申请

US20100188396A1 Updating Ray Traced Acceleration Data Structures Between Frames Based on Changing Perspective 有权
标题翻译：基于不断变化的视角，更新帧之间的光线跟踪加速数据结构
公开(公告)号：US20100188396A1
公开(公告)日：2010-07-29
申请号：US12361019
申请日：2009-01-28
申请人： Eric Oliver Mejdrich , Paul Emery Schardt , Robert Allen Shearer , Matthew Ray Tubbs
发明人： Eric Oliver Mejdrich , Paul Emery Schardt , Robert Allen Shearer , Matthew Ray Tubbs
IPC分类号： G06T15/00
CPC分类号： G06T15/06 , G06T17/005
摘要： A method, program product and system for conducting a ray tracing operation where the rendering compute requirement is reduced or otherwise adjusted in response to a changing vantage point. Aspects may update or reuse an acceleration data structure between frames in response to the changing vantage point. Tree and image construction quality may be adjusted in response to rapid changes in the camera perspective. Alternatively or additionally, tree building cycles may be skipped. All or some of the tree structure may be built in intervals, e.g., after a preset number of frames. More geometric image data may be added per leaf node in the tree in response to an increase in the rate of change. The quality of the rendering algorithm may additionally be reduced. A ray tracing algorithm may decrease the depth of recursion, and generate fewer cast and secondary rays. The ray tracer may further reduce the quality of soft shadows, resolution and global illumination samples, among other quality parameters. Alternatively, tree rebuilding may be skipped entirely in response to a high camera rate of change. Associated processes may create blur between frames to simulate motion blur.
摘要翻译：一种用于执行光线跟踪操作的方法，程序产品和系统，其中响应于不断变化的有利位置来减少或以其他方式调整渲染计算要求。响应于不断变化的有利位置，方面可以更新或重新使用帧之间的加速度数据结构。可以根据相机视角的快速变化来调整树木和图像施工质量。或者或另外，可以跳过建树循环。树结构的全部或一些可以以间隔内置，例如在预设数量的帧之后。响应于变化率的增加，可以在树中的每个叶节点添加更多的几何图像数据。还可以减少渲染算法的质量。光线跟踪算法可以减少递归深度，并产生更少的投射和二次光线。光线跟踪器可以进一步降低软阴影，分辨率和全局照明样本的质量以及其他质量参数。或者，可以根据高摄像机的变化率来完全地跳过树重建。相关过程可能会在帧之间产生模糊以模拟运动模糊。

64. 发明授权

US07542044B2 Optimized specular highlight generation 失效
标题翻译：优化镜面高光生成
公开(公告)号：US07542044B2
公开(公告)日：2009-06-02
申请号：US12049319
申请日：2008-03-15
申请人： Gordon Clyde Fossum , Stephen Joseph Schwinn , Matthew Ray Tubbs
发明人： Gordon Clyde Fossum , Stephen Joseph Schwinn , Matthew Ray Tubbs
IPC分类号： G06T1/00
CPC分类号： G06T15/506
摘要： An approach to optimize specular highlight generation is presented. A single microprocessor instruction is used to generate an intensity value based upon a viewing angle value. An application stores a viewing angle value in an input register. When called, the “intensity instruction” retrieves the viewing angle value from the input register, and calculates an intensity value using three distinct steps. In turn, the intensity instruction stores the intensity value in an output register for the application to retrieve and further process. In one embodiment, the invention may be implemented using PowerPC™ assembly and VMX™ or Altivec™ instructions. In this embodiment, the intensity instruction may be represented as a “vspecefp” instruction, which stands for a “vector specular estimate floating point” instruction.
摘要翻译：介绍了优化镜面高光生成的方法。单个微处理器指令用于基于视角值产生强度值。应用程序将视角值存储在输入寄存器中。当被调用时，“强度指令”从输入寄存器检索视角值，并使用三个不同的步骤计算强度值。反之，强度指令将强度值存储在用于检索和进一步处理的应用的输出寄存器中。在一个实施例中，本发明可以使用PowerPC TM组件和VMX TM或Altivec TM指令来实现。在本实施例中，强度指令可以表示为“vspecefp”指令，其代表“矢量镜面估计浮点”指令。

65. 发明授权

US07456837B2 Optimized specular highlight generation 失效
标题翻译：优化镜面高光生成
公开(公告)号：US07456837B2
公开(公告)日：2008-11-25
申请号：US11032240
申请日：2005-01-10
申请人： Gordon Clyde Fossum , Stephen Joseph Schwinn , Matthew Ray Tubbs
发明人： Gordon Clyde Fossum , Stephen Joseph Schwinn , Matthew Ray Tubbs
IPC分类号： G06T1/00
CPC分类号： G06T15/506
摘要： A method for optimized specular highlight generation is presented. A single microprocessor instruction is used to generate an intensity value based upon a viewing angle value. An application stores a viewing angle value in an input register. When called, the “intensity instruction” retrieves the viewing angle value from the input register, and calculates an intensity value using three distinct steps. In turn, the intensity instruction stores the intensity value in an output register for the application to retrieve and further process.
摘要翻译：提出了一种优化镜面高光生成的方法。单个微处理器指令用于基于视角值产生强度值。应用程序将视角值存储在输入寄存器中。当被调用时，“强度指令”从输入寄存器检索视角值，并使用三个不同的步骤计算强度值。反之，强度指令将强度值存储在用于检索和进一步处理的应用的输出寄存器中。

66. 发明申请

US20080158228A1 Optimized Specular Highlight Generation 失效
标题翻译：优化镜面高光发生
公开(公告)号：US20080158228A1
公开(公告)日：2008-07-03
申请号：US12049319
申请日：2008-03-15
申请人： Gordon Clyde Fossum , Stephen Joseph Schwinn , Matthew Ray Tubbs
发明人： Gordon Clyde Fossum , Stephen Joseph Schwinn , Matthew Ray Tubbs
IPC分类号： G06T15/50
CPC分类号： G06T15/506
摘要： An approach to optimize specular highlight generation is presented. A single microprocessor instruction is used to generate an intensity value based upon a viewing angle value. An application stores a viewing angle value in an input register. When called, the “intensity instruction” retrieves the viewing angle value from the input register, and calculates an intensity value using three distinct steps. In turn, the intensity instruction stores the intensity value in an output register for the application to retrieve and further process. In one embodiment, the invention may be implemented using PowerPC™ assembly and VMX™ or Altivec™ instructions. In this embodiment, the intensity instruction may be represented as a “vspecefp” instruction, which stands for a “vector specular estimate floating point” instruction.
摘要翻译：介绍了优化镜面高光生成的方法。单个微处理器指令用于基于视角值产生强度值。应用程序将视角值存储在输入寄存器中。当被调用时，“强度指令”从输入寄存器检索视角值，并使用三个不同的步骤计算强度值。反之，强度指令将强度值存储在用于检索和进一步处理的应用的输出寄存器中。在一个实施例中，本发明可以使用PowerPC TM组件和VMX TM或Altivec TM指令来实现。在本实施例中，强度指令可以表示为“vspecefp”指令，其代表“矢量镜面估计浮点”指令。

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