Abstract: In a print server device, print data reading and a printing process are performed in parallel so as to reduce the printing time and the printing order of print jobs is automatically or optionally changed. A print server device 1 stores print data of a print job 3 accepted thereby, reads out the print data in accordance with a print request command and has the read out print data analyzed and processed at a device control filter 8 for output to a printer 2. A control unit 9 sequentially reads out the print data for supply to the device control filter as a part of the print data is started to be stored. In addition, the control unit 9 puts the print job in a print wait condition. The print jobs are selected in accordance with a priority following a specific condition so as to be released from the print wait condition, and the print data of the print files is read out for supply to the device control filter.

Abstract: A polygon drawing apparatus for admitting a figure drawing command including command type data and vertex data defining a polygon to be drawn and for outputting raster data about the polygon. On the basis of the command type of the figure drawing command received from a client, the apparatus judges whether or not the target polygon is a plane figure. When the target polygon is judged to be a plane figure, the apparatus performs such processing as face/reverse determination, coordinate transformation and color computations on the polygon, divides the polygon into a plurality of triangles, and converts each of the divided triangles into raster data. If the target polygon is judged to be a non-planar figure, the apparatus divides the polygon into a plurality of triangles, carries out such processing as face/reverse determination, coordinate transformation and color computations on each of the divided triangles, and converts each triangle into raster data.