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2. 发明授权

US06429877B1 System and method for reducing the effects of aliasing in a computer graphics system 有权
标题翻译：用于减少计算机图形系统中的混叠效应的系统和方法
公开(公告)号：US06429877B1
公开(公告)日：2002-08-06
申请号：US09365115
申请日：1999-07-30
申请人： Howard D Stroyan
发明人： Howard D Stroyan
IPC分类号： G09G536
CPC分类号： G06T15/503 , G06T2200/12 , G09G5/20 , G09G5/39 , G09G2340/10
摘要： The present invention is generally directed to a system and method for anti-aliasing edges of adjacent primitives. In accordance with one aspect of the invention, a method operates by determining whether a pixel is an edge pixel of a filled primitive, approximating a coverage area of the pixel, the coverage area being the area of the pixel interior to the primitive edge, determining a direction from the pixel center to an external edge of the primitive, and blending a first color of the primitive with a second color, the second color being a color of a pixel of a second primitive adjacent the external edge. In accordance with another aspect of the invention, a system is provided having frame buffer circuitry uniquely configured for rendering an anti-aliased graphics scene. In accordance with one embodiment, the frame buffer circuitry includes a first memory segment for storing color values associated with pixels, a second memory segment for storing alpha values associated with the pixels, a third memory segment for storing depth values associated with the pixels, and a fourth memory segment for storing anti-alias blending information associated with the pixels.
摘要翻译：本发明一般涉及一种用于相邻基元边缘的抗锯齿的系统和方法。根据本发明的一个方面，一种方法通过确定像素是否是填充原语的边缘像素，近似于像素的覆盖区域，覆盖区域是到原始边缘的像素内部区域，确定从所述像素中心到所述图元的外部边缘的方向，以及将所述图元的第一颜色与第二颜色混合，所述第二颜色是与所述外部边缘相邻的第二原色的像素的颜色。根据本发明的另一方面，提供一种系统，其具有唯一地配置用于渲染抗锯齿图形场景的帧缓冲器电路。根据一个实施例，帧缓冲器电路包括用于存储与像素相关联的颜色值的第一存储器段，用于存储与像素相关联的α值的第二存储器段，用于存储与像素相关联的深度值的第三存储器段，以及第四存储器段，用于存储与像素相关联的反混叠混合信息。

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