| 摘要 |
A CPU selects a rendering mode to be employed when an alpha test condition is not satisfied from a plurality of rendering modes in accordance with a user's selection and sets the selected mode. An alpha test circuit compares the value of alpha data of an image with a constant, and judges whether a comparison result satisfies the condition. If it is judged that the comparison result does not satisfy the condition, the alpha test circuit causes a rendering process to be executed in accordance with the rendering mode thus set. |
