alpha compare, (A) circuitry for interpreting an alpha compare enable mode field that enables conditional color write on alpha compare, and (c) circuitry coupled to above-mentioned circuitry (a)-(k), (A)-(M), (V1), (V2) and (W)-(Z) for generating an image, said system further including circuitry for interpreting a plurality of blend modeword that specify blender parameters specifying:selectively