| 摘要 |
Drawing process speed is increased when a drawing object is provided with a border and displayed in an image. GPU (12) acquires priority order information indicating the image display order of a drawing object displayed in one image. A priority order setting unit (2), when expanding the drawing object in a video memory (13) with reference to the priority order information, sets, for each pixel of the drawing object, a priority order of the drawing object to which the pixel belongs. When there is a pixel with a higher priority order than a pixel of interest in a search region of a determined range including the pixel of interest of the image expanded in the video memory (13), a border determination unit (4) determines that the pixel of interest is a border pixel. A substitution unit (5) substitutes the pixel determined to be the border pixel by the border determination unit (4) with a pixel of a determined border color. |
