MB86296 Datasheet, PDF (131/352 Pages) Fujitsu Component Limited. – PCI Graphics Controller Specification

FUJITSU LIMITED PRELIMINARY AND CONFIDENTIAL
10.8 Shadowing
10.8.1 Shadowing
The Coral supports a shadow primitive which is same shape as a body.
A shadow is drawn in a position shifted for a device coordinate(X, Y) by setting the OverlapXY
command. And by setting the OverlapZ, it is possible to control a drawing result to avoid twice
rendering in alpha blend or logical calculation.
- Line
Two shadow lines are drawn in a line shadowing. One is a shadow line and another is a
shadow composition line. A shadow composition line is used for avoiding an overlap with
body line. And drawing priority can be set for rendering performance or anti-aliasing.
- Triangle and polygon
A shadow primitive are drawn in a triangle and polygon shadowing. Drawing priority is fixed
as a body primitive is first.
Body line
Shadow line
Shadow composition line
Body primitive
Shadow primitive
MB86296S <Coral-PA>
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Specification Manual Rev0.1