An image processing apparatus able to efficiently utilize a large amount of operation processing elements, having a high degree of freedom of algorithms, and having a high flexibility, provided with a rasterizer for generating pixel data or addresses; a graphics unit for generating graphics data based on texture coordinates; a pixel operation processor for performing operations based on the graphics data and performing image processing with respect to the image data in accordance with source addresses at the time of image processing; a pixel engine for performing operations with respect to the operation data of the pixel operation processor set in a register based on the color data; and a write unit for performing processing required for pixel writing based on window coordinates and the operation data of the pixel engine set in the register at the time of graphics processing and writing the processing results into a memory according to need and writing the operation data of the pixel operation processor set in the register at a destination address of the memory at the time of image processing, and a method of the same.