1. An image processing apparatus comprising: an acquisition unit configured to acquire a bitmap image including a plurality of pixels, each of the plurality of the pixels having an alpha value indicating an opacity of the pixel; and a rendering unit configured to perform a rendering of the bitmap image using alpha blending, wherein, in the rendering of the bitmap image by the rendering unit, alpha blending is not performed on a pixel of the plurality of the pixels that has a specific alpha value but is performed on a pixel of the plurality of the pixels that has a different alpha value than the specific alpha value.