公开(公告)号：US06259462B1

公开(公告)日：2001-07-10

申请号：US09208194

申请日：1998-12-09

申请人： Andrew E. Gruber ,  Richard J. Fuller

发明人： Andrew E. Gruber ,  Richard J. Fuller

IPC分类号： G09G537

CPC分类号： G09G5/393 ,  G06T15/503

摘要： A method and apparatus for blending textures and other operands in a video graphics system using a single blend unit is accomplished through the following steps. A first set of control information is received. A first portion of the first set of control information is sued to select a first blend operand, which is preferably a texture in a graphics processing system. A second blend operand is selected based on a second portion of the first set of control information. The first and second blend operands are combined using an operation selected by a third portion of the first set of control information. The combination of the first and second blend operands produces a first combination result. A second set of control information is received, and a first portion of the second set of control information selects a third blend operand. The first combination result is then selected as a fourth blend operand using a second portion of the second set of control information. The third and fourth blend operands are then provided as inputs to the same combining block utilized for the first combination. A second operation is selected based on a third portion of the second set of control information, and the third and fourth operand are combined based on the second operation to produce a second combination result.

摘要翻译： 通过以下步骤来实现使用单个混合单元在纹理和其他操作数中混合视频图形系统的方法和装置。 接收第一组控制信息。 第一组控制信息的第一部分被起诉以选择第一混合操作数，其优选地是图形处理系统中的纹理。 基于第一组控制信息的第二部分选择第二混合操作数。 使用由第一组控制信息的第三部分选择的操作来组合第一和第二混合操作数。 第一和第二混合操作数的组合产生第一组合结果。 接收第二组控制信息，并且第二组控制信息的第一部分选择第三混合操作数。 然后使用第二组控制信息的第二部分将第一组合结果选择为第四混合操作数。 然后将第三和第四混合操作数作为输入提供给用于第一组合的相同组合块。 基于第二组控制信息的第三部分选择第二操作，并且基于第二操作组合第三和第四操作数以产生第二组合结果。