| 摘要 |
An image processing apparatus enabling alpha blending or other image processing during bit block transfer (bitblt), wherein the selector 52 selects one of the primitive data S 143 , the image data S 12 and the image data S 147 a that are used for the host-local transfer, and outputs the data to the alpha blend circuit 53 . According to the control signal S 55 , the alpha blend circuit 53 turns on or turns off alpha blending. The selector 54 selects either the image data S 139 or the image data S 53 and writes the data to the DRAM 147.
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