| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform a display with high visibility even when a capacity of display memory of VRAM or the like is insufficient. <P>SOLUTION: A drawing engine 20 that executes a drawing process for drawing a display image on a background image has two drawing modes, a direct mode for acquiring the background image from a RAM 41 of a display part 40, and an off screen mode for acquiring it from a RAM 13 (VRAM) of a main control part 10. When the RAM 13 (VRAM) has a free space of less than a predetermined amount, the drawing engine 20 switches the current drawing mode to the direct mode, and when having the free space of the predetermined amount or more, switches the current mode to the off screen mode. <P>COPYRIGHT: (C)2013,JPO&INPIT |
