A method and system for rendering rectangle drawing objects using a clip region are provided. For at least a first rectangle drawing object and a second rectangle drawing object, a determination is made if the first rectangle drawing object and the second rectangle drawing object satisfy a predetermined condition. If the predetermined condition is satisfied, one-line raster image data associated with the first and second rectangle drawing objects is generated, and a clip region corresponding to the first and second rectangle drawing objects is generated. Subsequently, the one-line raster image data may be used together with the clip region to fill a clipped drawing region corresponding to the first and second rectangle drawing objects.