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1. 发明授权

US08004522B1 Using coverage information in computer graphics 有权
标题翻译：在计算机图形学中使用覆盖信息
公开(公告)号：US08004522B1
公开(公告)日：2011-08-23
申请号：US11890839
申请日：2007-08-07
申请人： Michael J. M. Toksvig , Brian K. Cabral , Edward A. Hutchins , Gary C. King , Christopher D. S. Donham
发明人： Michael J. M. Toksvig , Brian K. Cabral , Edward A. Hutchins , Gary C. King , Christopher D. S. Donham
IPC分类号： G06T15/50 , G09G5/00
CPC分类号： G06T15/503
摘要： The boundary of a surface can be represented as a series of line segments. A number of polygons are successively superimposed onto the surface. The polygons utilize a common reference point and each of the polygons has an edge that coincides with one of the line segments. Coverage bits are associated with respective sample locations within a pixel. A value of a coverage bit is changed each time a sample location associated with the coverage bit is covered by one of the polygons. Final values of the coverage bits are buffered after all of the polygons have been processed. The values of the coverage bits can be used when the surface is subsequently rendered.
摘要翻译：表面的边界可以表示为一系列线段。多个多边形依次叠加在表面上。多边形使用公共参考点，并且每个多边形具有与一个线段重合的边。覆盖位与像素内的相应样本位置相关联。每当与覆盖比特相关联的采样位置被多边形之一覆盖时，覆盖比特的值被改变。所有覆盖位的最终值在所有的多边形都被处理后被缓冲。当表面随后呈现时，可以使用覆盖位的值。

2. 发明授权

US07876332B1 Shader that conditionally updates a framebuffer in a computer graphics system 有权
标题翻译：着色器有条件地更新计算机图形系统中的帧缓冲区
公开(公告)号：US07876332B1
公开(公告)日：2011-01-25
申请号：US11643558
申请日：2006-12-20
申请人： Christopher D. S. Donham , Edward A. Hutchins , Gary C. King , Michael J. M. Toksvig
发明人： Christopher D. S. Donham , Edward A. Hutchins , Gary C. King , Michael J. M. Toksvig
IPC分类号： G09G5/00
CPC分类号： G09G5/393 , G06T11/40 , G06T15/005 , G09G5/363
摘要： A computer-implemented graphics system that includes a rasterizer and a shader has a mode of operation in which primitive coverage information is generated for real sample locations and virtual sample locations for use in anti-aliasing. An individual pixel includes a single real sample location and at least one virtual sample location. In some instances, a primitive may cover only virtual sample locations and does not cover a real sample location. These instances can be identified in the coverage information sent from the rasterizer to the shader, so that the shader can determine whether or not it can write color information, depth information and/or stencil information for the real sample location to a framebuffer.
摘要翻译：包括光栅化器和着色器的计算机实现的图形系统具有操作模式，其中为实际采样位置和用于抗锯齿的虚拟采样位置生成原始覆盖信息。单个像素包括单个实际采样位置和至少一个虚拟采样位置。在某些情况下，原语可能仅覆盖虚拟样本位置，并且不覆盖真实的样本位置。可以在从光栅化器发送到着色器的覆盖信息中识别这些实例，使得着色器可以确定它是否可以将真实样本位置的颜色信息，深度信息和/或模板信息写入帧缓冲器。

3. 发明授权

US08547395B1 Writing coverage information to a framebuffer in a computer graphics system 有权
标题翻译：将覆盖信息写入计算机图形系统中的帧缓冲区
公开(公告)号：US08547395B1
公开(公告)日：2013-10-01
申请号：US11643545
申请日：2006-12-20
申请人： Edward A. Hutchins , Christopher D. S. Donham , Gary C. King , Michael J. M. Toksvig
发明人： Edward A. Hutchins , Christopher D. S. Donham , Gary C. King , Michael J. M. Toksvig
IPC分类号： G09G5/00
CPC分类号： G06T15/005 , G06T11/40
摘要： A computer-implemented graphics system has a mode of operation in which primitive coverage information is generated by a rasterizer for real sample locations and virtual sample locations for use in anti-aliasing. An individual pixel includes a single real sample location and at least one virtual sample location. If the coverage information cannot be changed by a pixel shader, then the rasterizer can write the coverage information to a framebuffer. If, however, the coverage information can be changed by the shader, then the rasterizer sends the coverage information to the shader.
摘要翻译：计算机实现的图形系统具有操作模式，其中原始覆盖信息由光栅化器生成用于实际样本位置和用于抗锯齿的虚拟样本位置。单个像素包括单个实际采样位置和至少一个虚拟采样位置。如果覆盖信息不能被像素着色器改变，则光栅化器可以将覆盖信息写入帧缓冲区。然而，如果覆盖信息可以由着色器改变，则光栅化器将覆盖信息发送到着色器。

4. 发明授权

US07817165B1 Selecting real sample locations for ownership of virtual sample locations in a computer graphics system 有权
标题翻译：选择计算机图形系统中虚拟样本位置的所有权的实际样本位置
公开(公告)号：US07817165B1
公开(公告)日：2010-10-19
申请号：US11643185
申请日：2006-12-20
申请人： Christopher D. S. Donham , Edward A. Hutchins , Gary C. King , Michael J. M. Toksvig
发明人： Christopher D. S. Donham , Edward A. Hutchins , Gary C. King , Michael J. M. Toksvig
IPC分类号： G09G5/00
CPC分类号： G09G5/363 , G06T11/40 , G09G5/00 , G09G2340/10 , G09G2360/18
摘要： A computer-implemented graphics system has a mode of operation in which primitive coverage information is generated for real sample locations and virtual sample locations for use in anti-aliasing. An individual pixel includes a single real sample location and at least one virtual sample location. A block of real sample locations can be selected to delineate and encompass a region containing a number of virtual sample locations. Pixel attribute values (e.g., z-depth or stencil values) associated with the block of selected real sample locations can be used to associate each virtual sample location within the region with one of the selected real sample locations. The virtual sample location assumes the pixel attribute value of the real sample location with which it is associated.
摘要翻译：计算机实现的图形系统具有操作模式，其中为实际采样位置和用于抗锯齿的虚拟采样位置生成原始覆盖信息。单个像素包括单个实际采样位置和至少一个虚拟采样位置。可以选择实际样本位置的块来描绘并包含包含多个虚拟样本位置的区域。可以使用与所选择的实取样位置的块相关联的像素属性值（例如，z深度或模板值）将该区域内的每个虚拟样本位置与所选择的实际采样位置之一相关联。虚拟样本位置假定与其相关联的实际样本位置的像素属性值。

5. 发明授权

US07808512B1 Bounding region accumulation for graphics rendering 有权
标题翻译：图形渲染的边界区域积累
公开(公告)号：US07808512B1
公开(公告)日：2010-10-05
申请号：US11642276
申请日：2006-12-19
申请人： Edward A. Hutchins , Christopher D. S. Donham , Gary C. King , Michael J. M. Toksvig , Mark J. Kilgard
发明人： Edward A. Hutchins , Christopher D. S. Donham , Gary C. King , Michael J. M. Toksvig , Mark J. Kilgard
IPC分类号： G09G5/00
CPC分类号： G09G3/3611 , G09G5/225 , G09G2360/18
摘要： In a raster unit of a graphics processor, a method for bounding region accumulation for graphics rendering. The method includes receiving a plurality of graphics primitives for rasterization in a raster stage of a graphics processor and rasterizing the graphics primitives to generate a plurality pixels related to the graphics primitives and a plurality of respective bounding regions related to the graphics primitives. Upon receiving an accumulation start command, the bounding regions are accumulated in an accumulation register. The accumulation continues until an accumulation stop command is received. The operation results in an accumulated bounding region. Access to the accumulated bounding region is enabled to facilitate a subsequent graphics rendering operation.
摘要翻译：在图形处理器的光栅单元中，用于界定图形渲染的区域累积的方法。该方法包括在图形处理器的光栅级中接收用于光栅化的多个图形基元，并且对图形基元进行光栅化以生成与图形基元相关的多个像素以及与图形基元相关的多个相应的边界区域。在接收到累加开始命令时，边界区域被累积在累加寄存器中。累积继续，直到接收到累加停止命令。操作会导致累积的边界区域。能够访问累积的边界区域以促进随后的图形绘制操作。

6. 发明授权

US08594441B1 Compressing image-based data using luminance 有权
标题翻译：使用亮度压缩基于图像的数据
公开(公告)号：US08594441B1
公开(公告)日：2013-11-26
申请号：US11520144
申请日：2006-09-12
申请人： Gary C. King , Edward A. Hutchins , Michael J. M. Toksvig
发明人： Gary C. King , Edward A. Hutchins , Michael J. M. Toksvig
IPC分类号： G06K9/36 , G06K9/00 , G06K9/46
CPC分类号： G06T9/00 , H04N1/646 , H04N19/124 , H04N19/136 , H04N19/186
摘要： Image-based data, such as a block of texel data, is accessed. The data includes sets of color component values. A luminance value is computed for each set of color components values, generating a range of luminance values. A first set and a second set of color component values that correspond to the minimum and maximum luminance values are selected from the sets of color component values. A third set of color component values can be mapped to an index that identifies how the color component values of the third set can be decoded using the color component values of the first and second sets. The index value is selected by determining where the luminance value for the third set lies in the range of luminance values.
摘要翻译：访问基于图像的数据，例如一组纹素数据。数据包括彩色分量值集合。为每组颜色分量值计算亮度值，产生亮度值范围。从颜色分量值的集合中选择对应于最小和最大亮度值的第一组和第二组颜色分量值。可以将第三组颜色分量值映射到识别如何使用第一和第二组的颜色分量值来解码第三组的颜色分量值的索引。通过确定第三组的亮度值位于亮度值的范围内来选择索引值。

7. 发明授权

US07760936B1 Decompressing image-based data compressed using luminance 有权
标题翻译：使用亮度解压缩基于图像的数据
公开(公告)号：US07760936B1
公开(公告)日：2010-07-20
申请号：US11520066
申请日：2006-09-12
申请人： Gary C. King , Edward A. Hutchins , Michael J. M. Toksvig
发明人： Gary C. King , Edward A. Hutchins , Michael J. M. Toksvig
IPC分类号： G06K9/00 , G06K9/36 , G06K9/46
CPC分类号： H04N19/176 , H04N19/186 , H04N19/436 , H04N19/90
摘要： Data that includes an encoded version of sets of color component values for a block of texels is accessed. The encoded version includes a first set of color component values selected from a pre-encoded version of the sets and a second set of color component values selected from the pre-encoded version of the sets. The first set and the second set correspond to endpoints of a range of colors. The encoded version further includes index values associated with the texels. The first set and the second set and an index value associated with a texel are used to decode a third set of color component values that describes a color for the texel. The index value indicates how to determine the third set using the first set and the second set.
摘要翻译：访问包含纹理块块的颜色分量值集合的编码版本的数据。编码版本包括从组的预编码版本中选择的第一组颜色分量值和从组的预编码版本中选择的第二组颜色分量值。第一组和第二组对应于一系列颜色的端点。编码版本还包括与纹素相关联的索引值。第一组和第二组以及与纹素相关联的索引值用于解码描述纹素的颜色的第三组颜色分量值。索引值指示如何使用第一组和第二组确定第三组。

8. 发明授权

US07573485B1 System and method for virtual coverage anti-aliasing 有权
标题翻译：用于虚拟覆盖抗锯齿的系统和方法
公开(公告)号：US07573485B1
公开(公告)日：2009-08-11
申请号：US11955746
申请日：2007-12-13
申请人： Gary C. King , Douglas Sim Dietrich, Jr. , Michael J. M. Toksvig , Steven E. Molnar , Edward A. Hutchins
发明人： Gary C. King , Douglas Sim Dietrich, Jr. , Michael J. M. Toksvig , Steven E. Molnar , Edward A. Hutchins
IPC分类号： G09G5/00
CPC分类号： G06T11/40
摘要： A graphics system has a mode of operation in which real samples and virtual samples are generated for anti-aliasing pixels. Each virtual sample identifies a set of real samples associated with a common primitive that covers a virtual sample location within a pixel. The virtual samples provide additional coverage information that may be used to adjust the weights of real samples.
摘要翻译：图形系统具有操作模式，其中为抗锯齿像素生成真实样本和虚拟样本。每个虚拟样本标识与覆盖像素内的虚拟样本位置的公共基元相关联的一组实际样本。虚拟样本提供可用于调整实际样本权重的附加覆盖信息。

9. 发明授权

US07333119B1 System and method for virtual coverage anti-aliasing 有权
标题翻译：用于虚拟覆盖抗锯齿的系统和方法
公开(公告)号：US07333119B1
公开(公告)日：2008-02-19
申请号：US10980078
申请日：2004-11-02
申请人： Gary C. King , Douglas Sim Dietrich, Jr. , Michael J. M. Toksvig , Steven E. Molnar , Edward A. Hutchins
发明人： Gary C. King , Douglas Sim Dietrich, Jr. , Michael J. M. Toksvig , Steven E. Molnar , Edward A. Hutchins
IPC分类号： G09G5/00
CPC分类号： G06T11/40
摘要： A graphics system has a mode of operation in which real samples and virtual samples are generated for anti-aliasing pixels. Each virtual sample identifies a set of real samples associated with a common primitive that covers a virtual sample location within a pixel. The virtual samples provide additional coverage information that may be used to adjust the weights of real samples.
摘要翻译：图形系统具有操作模式，其中为抗锯齿像素生成真实样本和虚拟样本。每个虚拟样本标识与覆盖像素内的虚拟样本位置的公共基元相关联的一组实际样本。虚拟样本提供可用于调整实际样本权重的附加覆盖信息。

10. 发明授权

US07369140B1 System, apparatus and method for subpixel shifting of sample positions to anti-alias computer-generated images 有权
标题翻译：将样本位置子像素移位到抗锯齿计算机生成的图像的系统，装置和方法
公开(公告)号：US07369140B1
公开(公告)日：2008-05-06
申请号：US11144996
申请日：2005-06-03
申请人： Gary C. King , Michael J. M. Toksvig
发明人： Gary C. King , Michael J. M. Toksvig
IPC分类号： G06F17/00 , G06T15/40 , G06T15/50 , G06T11/20
CPC分类号： G06T15/503 , G06T2200/12
摘要： A system, apparatus, and method are disclosed for modifying positions of sample positions for selectably oversampling pixels to anti-alias non-geometric portions of computer-generated images, such as texture, at least in part, by translating (e.g., shifting) shading sample positions relative to a frame of reference in which there is no relative motion between the geometries and the coverage sample positions. In one embodiment, an exemplary method determines whether a coverage sample position is covered by a geometric primitive. The method includes translating a shading sample position from an original shading sample position to the coverage sample position. This generally occurs if the geometry covers the coverage sample position to form a covered coverage sample position. Further, the method samples a shading value at the covered coverage sample positions for the pixel portion to anti-alias, for example, texture to reduce level of detail (“LOD”) artifacts.
摘要翻译：公开了一种系统，装置和方法，用于将用于可选择过采样像素的样本位置的位置修改为计算机生成的图像的抗混叠非几何部分，例如纹理，至少部分地通过平移（例如，移位）阴影相对于参考系的样本位置，其中几何和覆盖样本位置之间不存在相对运动。在一个实施例中，示例性方法确定覆盖样本位置是否被几何图元覆盖。该方法包括将着色样本位置从原始着色样本位置转换到覆盖样本位置。如果几何覆盖覆盖样本位置以形成覆盖的覆盖样本位置，则通常会发生这种情况。此外，该方法将用于像素部分的覆盖覆盖样本位置处的阴影值采样为抗混叠，例如纹理以降低细节水平（“LOD”）伪像。

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