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1. 发明授权

US06894689B1 Occlusion culling method and apparatus for graphics systems 有权
标题翻译：闭塞剔除方法和图形系统的装置
公开(公告)号：US06894689B1
公开(公告)日：2005-05-17
申请号：US10658171
申请日：2003-09-08
申请人： Edward C. Greene , Douglas A. Voorhies , Paolo Sabella , John M. Danskin , James M. Van Dyke
发明人： Edward C. Greene , Douglas A. Voorhies , Paolo Sabella , John M. Danskin , James M. Van Dyke
IPC分类号： G06T15/00 , G06T15/40
CPC分类号： G06T15/405 , G06T15/005
摘要： A system, method and computer program product are provided for avoiding reading z-values in a graphics pipeline. Initially, near z-values are stored which are each representative of a near z-value on an object in a region. Such region is defined by a tile and a coverage mask therein. Thereafter, the stored near z-values are compared with far z-values computed for other objects in the region. Such comparison indicates whether an object is visible in the region. Based on the comparison, z-values previously stored for image samples in the region are conditionally read from memory.
摘要翻译：提供了一种用于避免在图形管线中读取z值的系统，方法和计算机程序产品。最初，存储近似的z值，它们各自表示区域中的对象上的近z值。这样的区域由其中的瓦片和覆盖掩模定义。此后，将存储的近z值与对该区域中的其他对象计算的远z值进行比较。这样的比较指示对象是否在该区域中可见。基于该比较，先前为该区域中的图像样本存储的z值有条件地从存储器读取。

2. 发明授权

US06646639B1 Modified method and apparatus for improved occlusion culling in graphics systems 有权
标题翻译：用于改进图形系统中遮挡剔除的改进方法和装置
公开(公告)号：US06646639B1
公开(公告)日：2003-11-11
申请号：US09885665
申请日：2001-06-19
申请人： Edward C. Greene , Douglas A. Voorhies , Paolo Sabella , John M. Danskin , James M. Van Dyke
发明人： Edward C. Greene , Douglas A. Voorhies , Paolo Sabella , John M. Danskin , James M. Van Dyke
IPC分类号： G06T1500
CPC分类号： G06T15/405 , G06T15/005
摘要： A system, method and computer program product are provided for avoiding reading z-values in a graphics pipeline. Initially, near z-values are stored which are each representative of a near z-value on an object in a region. Such region is defined by a tile and a coverage mask therein. Thereafter, the stored near z-values are compared with far z-values computed for other objects in the region. Such comparison indicates whether an object is visible in the region. Based on the comparison, z-values previously stored for image samples in the region are conditionally read from memory.
摘要翻译：提供了一种用于避免在图形管线中读取z值的系统，方法和计算机程序产品。最初，存储近似的z值，它们各自表示区域中的对象上的近z值。这样的区域由其中的瓦片和覆盖掩模限定。此后，将存储的近z值与对该区域中的其他对象计算的远z值进行比较。这样的比较指示对象是否在该区域中可见。基于该比较，先前为该区域中的图像样本存储的z值有条件地从存储器读取。

3. 发明授权

US07190362B1 System and method for organizing data for a 3-dimensional graphics pipeline 失效
标题翻译：用于组织三维图形管道数据的系统和方法
公开(公告)号：US07190362B1
公开(公告)日：2007-03-13
申请号：US09009714
申请日：1998-01-20
申请人： Nicholas Baker , Mei-Chi Liu , Adrian Sfarti , Paolo Sabella
发明人： Nicholas Baker , Mei-Chi Liu , Adrian Sfarti , Paolo Sabella
IPC分类号： G06T15/00
CPC分类号： G06T1/60 , G06T1/20 , G06T15/005
摘要： A system and method for pipelining three-dimensional graphical data in which two-dimensional renderings of objects are created from polygon data by transforming and lighting each polygonal vertex and then connecting the vertices.
摘要翻译：一种用于流水线三维图形数据的系统和方法，其中通过变换和点亮每个多边形顶点然后连接顶点，从多边形数据创建对象的二维渲染。

4. 发明授权

US06529207B1 Identifying silhouette edges of objects to apply anti-aliasing 有权
标题翻译：识别对象的轮廓边缘以应用抗锯齿
公开(公告)号：US06529207B1
公开(公告)日：2003-03-04
申请号：US09584463
申请日：2000-05-31
申请人： Edouard Landau , Adrian Sfarti , Adam Malamy , Mei-Chi Liu , Robert Laker , Paolo Sabella
发明人： Edouard Landau , Adrian Sfarti , Adam Malamy , Mei-Chi Liu , Robert Laker , Paolo Sabella
IPC分类号： G09A500
CPC分类号： G06T15/503
摘要： A graphics rendering system creates an image based on objects constructed of polygonal primitives, which can generate the perception of three-dimensional objects displayed on a two-dimensional display device. An anti-aliasing operation is applied to silhouette edges of the objects, which are the edges of primitives which are displayed at the perimeter of an object. A silhouette edge can be identified by determining how many times an edge is rendered, with each instance of the rendering of an edge corresponding to the rendering of a primitive that adjoins the edge. An edge that is rendered exactly once is interpreted as a silhouette edge. An example of a silhouette edge is an edge that adjoins one triangular primitive that is viewable and another triangular primitive that is hidden from view by other primitives. Another technique for identifying a silhouette edge can be applied to closed objects by determining whether a first primitive adjoining an edge is hidden from view by other primitives and a second primitive also adjoining the edge is viewable. Once the silhouette edges are identified, the anti-aliasing operation is applied thereto.
摘要翻译：图形渲染系统基于由多边形基元构成的对象创建图像，其可以产生在二维显示设备上显示的三维对象的感知。反锯齿操作被应用于对象的轮廓边缘，对象的边缘是在对象的周边显示的图元的边缘。可以通过确定渲染边缘的次数来确定轮廓边缘，每个边缘的渲染实例与邻接边缘的原始图像的渲染相对应。渲染一次的边被解释为剪影边缘。剪影边缘的一个例子是毗邻可见的一个三角形原语的边缘，另一个三角形原语被其他图元隐藏。用于识别轮廓边缘的另一种技术可以通过确定邻接边缘的第一图元是否被其他图元隐藏而不被视图所覆盖，并且还可以看到与边缘相邻的第二图元，将其应用于闭合对象。一旦确定了轮廓边缘，则对其进行抗混叠操作。

5. 发明授权

US06297833B1 Bump mapping in a computer graphics pipeline 有权
标题翻译： Bump映射在计算机图形管道中
公开(公告)号：US06297833B1
公开(公告)日：2001-10-02
申请号：US09274985
申请日：1999-03-23
申请人： Shaun Ho , Douglas H. Rogers , Paolo Sabella
发明人： Shaun Ho , Douglas H. Rogers , Paolo Sabella
IPC分类号： G06T1140
CPC分类号： G06T11/40
摘要： A graphics accelerator pipeline including a rasterizer stage, a texture stage, and a combiner stage capable of producing realistic output images by mapping irregular textures to surfaces.
摘要翻译：包括光栅化阶段，纹理阶段和组合器阶段的图形加速器管线，能够通过将不规则纹理映射到表面来产生逼真的输出图像。

6. 发明授权

US6115050A Object-based anti-aliasing 失效
标题翻译：基于对象的反锯齿
公开(公告)号：US6115050A
公开(公告)日：2000-09-05
申请号：US57327
申请日：1998-04-08
申请人： Edouard Landau , Adrian Sfarti , Adam Malamy , Mei-Chi Liu , Robert Laker , Paolo Sabella
发明人： Edouard Landau , Adrian Sfarti , Adam Malamy , Mei-Chi Liu , Robert Laker , Paolo Sabella
IPC分类号： G06T15/50 , G06T15/10
CPC分类号： G06T15/503
摘要： A graphics rendering system creates an image based on objects constructed of polygonal primitives. Aliasing effects in the image are reduced by applying an anti-aliasing scheme to the areas of the image representing silhouette edges of the objects. The silhouette edges are anti-aliased by creating anti-aliasing primitives which vary in opacity. These anti-aliasing primitives are joined to the silhouetted edges, and create a region in the image where the objects appear to blend into the background.
摘要翻译：图形渲染系统基于由多边形原语构造的对象创建图像。通过在表示对象的轮廓边缘的图像的区域中应用抗锯齿方案来减少图像中的混叠效果。剪影边缘通过创建不透明度不同的抗锯齿原语来反锯齿。这些抗锯齿原语被连接到被映射的边缘，并且在图像中创建一个区域，其中对象看起来融合到背景中。

7. 发明授权

US5430465A Apparatus and method for managing the assignment of display attribute identification values and multiple hardware color look-up tables 失效
标题翻译：用于管理显示属性识别值和多个硬件颜色查找表的分配的装置和方法
公开(公告)号：US5430465A
公开(公告)日：1995-07-04
申请号：US221279
申请日：1994-03-29
申请人： Paolo Sabella , Jerald R. Evans , Deron Johnson
发明人： Paolo Sabella , Jerald R. Evans , Deron Johnson
IPC分类号： G06F3/033 , G06F3/048 , G09G5/06 , G09G5/14 , G09G5/30
CPC分类号： G09G5/06 , G06F3/0481 , G09G5/14
摘要： In a bit mapped display environment which has n hardware color look-up tables (CLUTs) where n=1 or more, which also has a limited number of Display Attribute Identification Values, and which may operate under various window systems, such as the X Window System protocol, an apparatus and a method for installing and uninstalling hardware colormaps under the constraint of a finite number of Display Attribute Identification Values, whereby the most recently installed (MRI) policy of the X Window System is followed. The invention provides a scheme which gracefully degenerates to some "color flashing" when Display Attribute Identification Values are exhausted; which allows Display Attribute Identification Values to be uncoupled from colormap management and used for more graphics intensive functions when needed; and which dynamically regenerates when display attributes again become available. The invention also minimizes the rendering of the Display Attribute Planes when a new colormap is installed in a system containing multiple hardware color look-up tables.
摘要翻译：在具有n = 1或更大的n个硬件颜色查找表（CLUT）的位映射显示环境中，其还具有有限数量的显示属性标识值，并且其可以在各种窗口系统（例如X 窗口系统协议，一种在有限数量的显示属性标识值的约束下安装和卸载硬件色彩映射的装置和方法，由此遵循X Window系统的最近安装（MRI）策略。本发明提供了当显示属性识别值被耗尽时优雅地退化为一些“彩色闪烁”的方案; 这允许显示属性标识值与色彩映射管理分离，并在需要时用于更多图形密集型功能; 并且当显示属性再次变为可用时动态地再生。当在包含多个硬件颜色查找表的系统中安装新的色彩映射时，本发明还使显示属性平面的渲染最小化。

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