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    • 5. 发明授权
    • Texture compositing apparatus and method
    • 纹理合成装置及方法
    • US5870102A
    • 1999-02-09
    • US57329
    • 1998-04-08
    • Gary TarolliScott SellersJames E. Margeson, III
    • Gary TarolliScott SellersJames E. Margeson, III
    • G06T11/20G06T15/04G06T15/50G06T11/40
    • G06T15/503G06T15/04
    • A texture compositing apparatus and method for combining multiple independent texture colors in a variety of ways in a single execution pass using a single texture compositing unit (TCU) per texture. The TCU receives a control signal, a blend factor, a local data signal(C.sub.local /A.sub.local) and an output data signal (C.sub.in /A.sub.in) generated by another TCU, the local data signal and the output data signal represent a texture color in a RGBA format. Based upon the control signal, the TCU can generate an output signal based on a variety of functions. The outputs that can be generated include but are not limited to: (1) zero; (2) one; (3) C.sub.in ; (4) C.sub.local ; (5) C.sub.in +C.sub.local ; (6) C.sub.in -C.sub.local ; (7) C.sub.in *C.sub.local ; (8) C.sub.in *C.sub.local +A.sub.local ; (9) C.sub.in *A.sub.local +C.sub.local ; (10) (C.sub.in -C.sub.local)* F.sub.blend +C.sub.local ; and (11) (C.sub.in -C.sub.local)*(1-F.sub.blend)+C.sub.local. Another feature of the invention is that multiple TCUs can be serially coupled to enable additional texture colors to be combined in a single execution path.
    • 一种纹理合成装置和方法,用于使用每个纹理的单个纹理合成单元(TCU)在单个执行遍历中以多种方式组合多个独立纹理颜色。 TCU接收由另一TCU生成的控制信号,混合因子,本地数据信号(Clocal / Alocal)和输出数据信号(Cin / Ain),本地数据信号和输出数据信号表示 RGBA格式。 基于控制信号,TCU可以基于各种功能生成输出信号。 可以生成的输出包括但不限于:(1)零; (2)一 (3)Cin; (4)Clocal; (5)Cin + Clocal; (6)Cin-Clocal; (7)Cin * Clocal; (8)Cin * Clocal + Alocal; (9)Cin * Alocal + Clocal; (10)(Cin-Clocal)* Fblend + Clocal; 和(11)(Cin-Clocal)*(1-Fblend)+ Clocal。 本发明的另一个特征是可以串联多个TCU以使得附加纹理颜色可以组合在单个执行路径中。
    • 6. 发明授权
    • Texture compositing apparatus and method
    • 纹理合成装置及方法
    • US5740343A
    • 1998-04-14
    • US552740
    • 1995-11-03
    • Gary TarolliScott SellersJames E. Margeson, III
    • Gary TarolliScott SellersJames E. Margeson, III
    • G06T11/20G06T15/04G06T15/50G06T11/40
    • G06T15/503G06T15/04
    • A texture compositing apparatus and method for combining multiple independent texture colors in a variety of ways in a single execution pass using a single texture compositing unit (TCU) per texture. The TCU receives a control signal, a blend factor, a local data signal(C.sub.local /A.sub.local), and an output data signal (C.sub.in /A.sub.in) generated by another TCU, the local data signal and the output data signal represent a texture color in a RGBA format. Based upon the control signal, the TCU can generate an output signal based on a variety of functions. The outputs that can be generated include but are not limited to: (1) zero; (2) one; (3) C.sub.in ; (4) C.sub.local ; (5) C.sub.in +C.sub.local ; (6) C.sub.in -C.sub.local ; (7) C.sub.in *C.sub.local ; (8) C.sub.in *C.sub.local +A.sub.local ; (9) C.sub.in *A.sub.local +C.sub.local ; (10) (C.sub.in -C.sub.local)*F.sub.blend +C.sub.local ; and (11) (C.sub.in -C.sub.local)*(1-F.sub.blend)+C.sub.local. Another feature of the invention is that multiple TCUs can be serially coupled to enable addition texture colors to be combined in a single execution path.
    • 一种纹理合成装置和方法,用于使用每个纹理的单个纹理合成单元(TCU)在单个执行遍历中以多种方式组合多个独立纹理颜色。 TCU接收由另一TCU生成的控制信号,混合因子,本地数据信号(Clocal / Alocal)和输出数据信号(Cin / Ain),本地数据信号和输出数据信号表示纹理颜色 一种RGBA格式。 基于控制信号,TCU可以基于各种功能生成输出信号。 可以生成的输出包括但不限于:(1)零; (2)一 (3)Cin; (4)Clocal; (5)Cin + Clocal; (6)Cin-Clocal; (7)Cin * Clocal; (8)Cin * Clocal + Alocal; (9)Cin * Alocal + Clocal; (10)(Cin-Clocal)* Fblend + Clocal; 和(11)(Cin-Clocal)*(1-Fblend)+ Clocal。 本发明的另一个特征是可以将多个TCU串联耦合以使得能够在单个执行路径中组合附加纹理颜色。
    • 7. 发明授权
    • System and method for efficiently determining a fog blend value in
processing graphical images
    • 用于在处理图形图像时有效地确定雾混合值的系统和方法
    • US5724561A
    • 1998-03-03
    • US552746
    • 1995-11-03
    • Gary TarolliScott Sellers
    • Gary TarolliScott Sellers
    • G06T1/20G06T15/50G06F15/00G06F13/00
    • G06T15/503
    • A system for generating blend values for three-dimensional graphic rendering includes a first register, a second register, third register, an index creation unit, a blend value generation unit and a blending unit. The first register receives and stores color pixel data, and the second register receives and stores a depth perspective component; and the third register receives and stores fog color data. The output of the second register is coupled to the index creation unit which uses the received depth perspective component to generate a two-part index. The two-part index is output by the index creation unit to produce a blend value. The first portion of the index is used to address a table in the blend generation unit, and the second portion of the index is used to produce an increment value added to output of the table resulting in the creation of a blend value. The blend value, the color pixel data and the fog color data are then blended by the blending unit and output by the system. The invention also includes a method for generating a blend value and producing a blended color output. The method includes the steps of: producing an index having a first portion and a second portion from a distance value; determining a base value using the first portion of the index, determining a delta between the base value and the next entry in the table using the first portion of the index, determining a blend increment using the delta and the second portion of the index; and producing a blend value by adding the base value to the blend increment; and blending the blend value with input pixel data.
    • 用于生成用于三维图形呈现的混合值的系统包括第一寄存器,第二寄存器,第三寄存器,索引创建单元,混合值生成单元和混合单元。 第一寄存器接收并存储彩色像素数据,第二寄存器接收并存储深度透视分量; 并且第三个寄存器接收并存储雾色数据。 第二寄存器的输出耦合到索引创建单元,该索引创建单元使用所接收的深度透视分量来生成两部分索引。 两部分索引由索引创建单元输出以产生混合值。 索引的第一部分用于寻址混合生成单元中的表,并且索引的第二部分用于产生添加到表的输出的增量值,导致创建混合值。 混合值,颜色像素数据和雾色数据然后由混合单元混合并由系统输出。 本发明还包括用于产生混合值并产生混合颜色输出的方法。 该方法包括以下步骤:从距离值产生具有第一部分和第二部分的索引; 使用所述索引的所述第一部分确定基本值,使用所述索引的所述第一部分确定所述表中的所述基础值与所述下一条目之间的差值,使用所述索引的所述增量和所述第二部分确定混合增量; 并通过将基础值添加到混合增量来产生混合值; 并将混合值与输入像素数据进行混合。