| 摘要 |
Disclosed are an arithmetic unit and an arithmetic processing method. In the arithmetic unit, in linear interpolation of a parameter of a pixel to be used to plot an object in a three-dimensional video, an operation result value can be fixed in response to a particular gradient value of the parameter and power consumption arising from charging and discharging through a clock wiring line can be reduced. The arithmetic unit includes an arithmetic operation element for linearly interpolating a parameter of a pixel in a triangle based on coordinate values of a vertex of the triangle and gradient values of the parameters in X and Y directions, a clock supply element for supplying a clock signal to the arithmetic operation element, a detection element for detecting a particular gradient value of the parameter in the X direction or/and the Y direction, and a control element for controlling the clock supply element in response to a gradient value of the parameter detection signal received from the detection element. The control element stops the clock signal when "0" is detected as the gradient value of the parameter in the X direction or/and as the gradient value of the parameter in the Y direction and within a period within which such "0" continues to be detected. <IMAGE> |
