Apparatus and methodology for automated filling of complex polyg

Boots – shoes – and leggings

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340723, 340798, G06F 3153

Patent

active

049012517

ABSTRACT:
A graphics co-processor that is autonomously responsive to an instruction for the filling of a complex polygon, as defined by an enumeration of P vertices is described. The co-processor preferably includes a micro-engine sequencer and ALU (arithmetic logic unit) for selecting a first vertex from the enumeration of P vertices and for decomposing the complex polygon into a set of P-2 triangles, wherein each triangle includes the first vertex and to successive vertices as presented in the enumeration of P vertices is derived. A sense value is derived for each of the resultant P-2 triangles and each triangle is filled with a predetermined fill quantity that is qualified by the respectively associated sense value of the triangle being filled. Thus, the present invention provides for the autonomous execution of a fill polygon instruction for polygons having such complexities as concavities, self-intersections, overlapping sections and "holes".

REFERENCES:
patent: 4179824 (1979-12-01), Marsh
patent: 4213252 (1980-07-01), Sullivan et al.
patent: 4396989 (1983-08-01), Fleming et al.
patent: 4475104 (1984-10-01), Shen
patent: 4609993 (1986-09-01), Shimizu

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