1. An information processing apparatus comprising: an input unit configured to input a gradation object; a rendering unit configured to render the input gradation object to obtain a rectangular bitmap including the rendered gradation object; a generation unit configured to generate a command for extracting pixels corresponding to the rendered gradation object out of the obtained rectangular bitmap; and a send unit configured to send the obtained rectangular bitmap and the command for extracting the pixels out of the obtained rectangular bitmap, wherein the command includes (1) XOR process between the obtained rectangular bitmap and a white rectangular bitmap, (2) AND process between a result of the XOR process and position information for indicating positions of the rendered gradation object, and (3) XOR process between the obtained rectangular bitmap and a result of the AND process.