SH7764 Datasheet, PDF (1194/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 23 G2D
Notes: 1. 8-point drawing is used.
2. The final point of each line segment is not drawn. When antialiasing is performed for
the exterior frame of a polygon drawn by a POLYGON4 type command, the paths may
not match.
3. When the starting and final coordinate points of a line segment match, nothing is
drawn.
4. Antialiasing is not performed for horizontal, vertical, and 45-degree diagonal line
segments, which are pre-clipped inside the G2D.
5. Clipping is performed on a pixel basis when either the referenced pixel or the pixel to
be drawn is outside the clipping area, and antialiasing is not performed in such a case.
6. The final coordinate point before coordinate transformation is stored as the current
pointer values (XC, YC).
(d) Example
n=5
(0, 0)
(XC + DX1 + DX2 + DX3 + DX4 + DX5,
YC + DY1 + DY2 + DY3 + DY4 + DY5) _{(XC + DX1, YC + DY1)}
(XC, YC)
(XC + DX1 + DX2,
YC + DY1 + DY2)
n=5
(0, 0)
(XC + DX1 + DX2 + DX3 + DX4 + DX5,
YC + DY1 + DY2 + DY3 + DY4 + DY5)
(XC, YC)
(XC + DX1 + DX2 + DX3 + DX4,
YC + DY1 + DY2 + DY3 + DY4)
(XC + DX1 + DX2 + DX3,
YC + DY1 + DY2 + DY3)
(XC + DX1 + DX2 + DX3 + DX4,
YC + DY1 + DY2 + DY3 + DY4)
(XC + DX1 + DX2 + DX3,
YC + DY1 + DY2 + DY3)
Rendering coordinates
CLKW = 1
(XC + DX1, YC + DY1)
(XC + DX1 + DX2,
YC + DY1 + DY2
Rendering coordinates
CLKW = 0
Rev. 1.00 Nov. 22, 2007 Page 1138 of 1692
REJ09B0360-0100