METHOD FOR MAPPING TEXTURE IN HIGH SPEED

摘要

PURPOSE: A texture mapping method is provided to map texture in high speed by reducing volume of an operation, without using an exclusive board. CONSTITUTION: A method for mapping texture in high speed includes four steps. A first step is to separate a transformed triangle when coordinates of an original triangle and the transformed triangle are inputted, establish a vertex data structure of the transformed triangle, and obtain a start point and an end point of an X-axis scan line of a triangle side while scanning along the Y-axis by using the data structure. A second step is to obtain a Z value by adding at every pixel along the X-axis scan line. A third step is to obtain a corresponding pixel in the triangle by addition using a matrix operation. A fourth step is to interpolate brightness value by using a table, and repeats from the first step till every pixel of the triangle is scanned.