公开(公告)号：US20090147012A1

公开(公告)日：2009-06-11

申请号：US12001251

申请日：2007-12-10

申请人： Edward A. Hutchins ,  William T. Warner, JR. ,  Christopher D.S. Donham

发明人： Edward A. Hutchins ,  William T. Warner, JR. ,  Christopher D.S. Donham

IPC分类号： G06T1/00

CPC分类号： G06T11/40

摘要： In a graphics pipeline of a graphics processor, a method for a unified primitive description for rasterization. The method includes receiving a group of primitives from a graphics application, wherein the group includes different types of primitives and the types of primitives include line primitives, point primitives and triangle primitives. For each of the types of primitives, the method includes generating a corresponding parallelogram, wherein the parallelogram has four sides disposed along an x-axis and a y-axis, and computing an inside y-axis mid point and an outside y-axis mid point based on the four sides. The parallelogram is controlled to represent to each of the primitive types respectively by adjusting a location of the inside y-axis mid point or the outside y-axis mid point.

摘要翻译： 在图形处理器的图形流水线中，用于光栅化的统一原始描述的方法。 该方法包括从图形应用程序接收一组图元，其中该组包括不同类型的图元，并且图元的类型包括线图元，点基元和三角形图元。 对于每种类型的图元，该方法包括生成对应的平行四边形，其中平行四边形具有沿着x轴和y轴设置的四个边，并且计算内部y轴中点和外部y轴中间 以四方为依据。 控制平行四边形分别通过调整内部y轴中点或外部y轴中点的位置来表示每个基本类型。

公开(公告)号：US20080211827A1

公开(公告)日：2008-09-04

申请号：US12032591

申请日：2008-02-15

申请人： Walter E. Donovan ,  Anders M. Kugler ,  Christopher D.S. Donham

发明人： Walter E. Donovan ,  Anders M. Kugler ,  Christopher D.S. Donham

IPC分类号： G09G5/00

CPC分类号： G06T15/04 ,  G06T2200/28

摘要： Floating-point texture filtering units leverage existing fixed-point filter circuits. Groups of floating-point texture values are converted to products of a fixed-point mantissa and a scaling factor that is the same for each texture value in the group. The fixed-point mantissas are filtered using a fixed-point filter circuit, and the filtered mantissa is combined with the scaling factor to determine a floating-point filtered value. Multiple floating-point filter results may be combined in a floating-point accumulator circuit. The same fixed-point filter circuit may also be used to filter fixed-point texture data by providing fixed-point input path that bypasses the format conversion and a fixed-point accumulator.

摘要翻译： 浮点纹理过滤单元利用现有的定点滤波电路。 浮点纹理值组被转换为固定点尾数的乘积和对组中每个纹理值相同的缩放因子。 使用定点滤波器电路对定点尾数进行滤波，并将滤波尾数与缩放因子组合以确定浮点滤波值。 多个浮点滤波器结果可以组合在浮点累加器电路中。 也可以使用相同的定点滤波器电路来通过提供绕过格式转换的定点输入路径和定点累加器来对定点纹理数据进行滤波。