초록 ▼

A display processor in a raster graphics display system includes a transformation, clipping and mapping feature which controls the transformation, clipping and mapping of graphics data. A control byte contains 5 bits identified as: M－Window to viewport mapping; P－perspective projection; D－2D/3D mode

A display processor in a raster graphics display system includes a transformation, clipping and mapping feature which controls the transformation, clipping and mapping of graphics data. A control byte contains 5 bits identified as: M－Window to viewport mapping; P－perspective projection; D－2D/3D mode; T－transformation; and C－clipping. Each bit in the control byte is tested to determine what operations are to be performed on the figure to be drawn.

대표청구항 ▼

A display processor for selectively providing transformation, clipping and mapping processes in a graphics display system comprising, in combination; a plurality of registers for storing branch addresses relating to said transformation, clipping and mapping processes; one of said registers being ass

A display processor for selectively providing transformation, clipping and mapping processes in a graphics display system comprising, in combination; a plurality of registers for storing branch addresses relating to said transformation, clipping and mapping processes; one of said registers being associated with each of said processes, means for branching to the value of one of said registers in accordance with the process being performed; means for determining the dimensions of a figure to be displayed; means for determining whether said figure is to be transformed; means for providing transformation of said figure; means for determining whether said figure is to be clipped against a predetermined clipping enclosure; means responsive to said last named determining means for clipping said figure against said predetermined clipping enclosure; and means for drawing said figure as a series of vectors for display on a display device in said graphic display system whereby the control decision for selective transformation, clipping and mapping processes is performed only when the transformation, clipping and mapping parameters are modified.