| 摘要 |
PURPOSE:To prevent double write to pixels in the vicinity of boundary lines of adjacent triangles at the time of generating a triangle by correctly drawing lines and correctly calculating a Z value and color data and correctly performing the hidden line and hidden face processing. CONSTITUTION:A selector 43 is controlled by the discrimination signal corresponding to the sign of a discriminant prescribed by various algorithms to properly select and output the increment value from an XT register 41 or an XF register 42. |
