Title:
【発明の名称】グラフィックイメージの処理においてブレンド値を効率的に決定するためのシステム及び方法
Document Type and Number:
Japanese Patent JP2960781
Kind Code:
B2
Abstract:
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.
Inventors:
TARORI GEERII
SERAAZU SUKOTSUTO
SERAAZU SUKOTSUTO
Application Number:
JP51751297A
Publication Date:
October 12, 1999
Filing Date:
November 01, 1996
Export Citation:
Assignee:
SURII DEII EFU ETSUKUSU INTARAKUTEIBU INC
International Classes:
G06T15/50; G06T1/20; (IPC1-7): G06T15/00; G06T1/00; G06T17/00
Domestic Patent References:
| JP4213780A | ||||
| JP4267284A | ||||
| JP5507166A |
Attorney, Agent or Firm:
Kaoru Furuya (2 outside)