MB86293 Datasheet, PDF (77/285 Pages) Fujitsu Component Limited. – Grraphiics Conttrrollllerr Speciiffiicattiions

FUJITSU LIMITED
PRELIMINARY and CONFIDENTIAL
8.2 F i g u r e D r a w i n g
8.2.1 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
8.2.2 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.
MB86293 CORAL_LQ
Graphics Controller
77
Specifications Rev. 1.1