| 摘要 |
PROBLEM TO BE SOLVED: To reduce a circuit scale by executing line drawing and polygon drawing by the same device and allowing a circuit for executing edge processing to have a function of a circuit for spanning processing in the polygon drawing. SOLUTION: In the rendering device, a control part 1 executes operation control for line drawing and polygon drawing, and at the time of line drawing, the coordinates of points on a line are generated by an X left edge coordinate generation part 2 and a Y coordinate generation part 4. At the time of polygon drawing, the generation part 2 generates the X coordinate of a point on the left side of a polygon and generates the X coordinate of a point in the polygon in spanning processing, an X right edge coordinate generation part 3 generates the X coordinate of a point on the right side of the polygon and the Y coordinate generation part 4 generates the Y coordinate of a spanning line. |
