Graphics engine for colour 2D graphics

摘要

A graphics engine (10) is disclosed which can be used in a colour desktop publishing system (Fig. 1). The graphics engine (10) accepts 32-bit RGBM data (11) and performs pixel level calculations under computer (l) control to output processed 32-bit RGBM data (19). The engine (10) comprises a render processor interface (100), a run controller (200) including a ramp generator (250), and a control unit (300). Interpolators (400) are provided for each colour (RGB) and cascaded with corresponding compositors (500). A transparency interpolator (600) and matte combiner (700) alter the matte plane of the video image. The engine (10) can output data suitable for rendering by a colour laser printer (5,7) for a full size A3 page at 400 dots per inch. <IMAGE>