MB86296 Datasheet, PDF (113/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
10.2 Figure Drawing
10.2.1 Drawing primitives
CORAL has a drawing interface that is compatible with the MB86290A graphics controller which does
not perform geometry processing. The following types of figure drawing primitives are compatible with
the MB86290A.
• Point
• Line
• Triangle
• High-speed 2DLine
• High-speed 2DTriangle
• Polygon
10.2.2 Polygon drawing function
An irregular polygon (including concave shape) is drawn by hardware in the following manner:
1. Execute PolygonBegin command.
Initialize polygon drawing hardware.
2. Draw vertices.
Draw outline of polygon and plot all vertices to polygon draw flag buffer using high-speed
2DTriangle primitive.
3. Execute PolygonEnd command.
Copy shape in polygon draw flag buffer to drawing frame and fill shape with color or specified tiling
pattern.
MB86296S <Coral-PA>
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Specification Manual Rev0.1