SH7764 Datasheet, PDF (1132/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 23 G2D
Vertex Coordinates
after Operation
Range
TX/WC, TY/WC and −H'7FFF ≤ TX/WC, TY/WC ≤ H'7FFF
TX/WC + offset X,
TY/WC + offset Y
−H'7FFF ≤ TX/WC + offset X,
TY/WC + offset Y ≤ H'7FFF
(16-bit integer)
X', Y'
Output vertex
−H'7FFF ≤ X', Y' ≤ H'7FFF
(16-bit integer)
−H'8000 ≤ Output vertex ≤ H'7FFF
(16-bit integer)
Saturation Processing
When TX/WC, TY/WC > H'7FFF:
H'7FFF
When TX/WC, TY/WC < −H'7FFF:
−H'7FFF
When TX/WC + offset X, TY/WC +
offset Y > H'7FFF: H'7FFF
When TX/WC + offset X, TY/WC +
offset Y < −H'7FFF: −H'7FFF
(16-bit integer)


(6) Bold Line Drawing
A bold line can be drawn by setting a value greater than 0 as line width W in a LINE type or
RLINE type command. The bold line coordinates a, b, c, and d are obtained from the starting and
final coordinate points and line width W, and the bold line drawn. W is set in the 6-bit integer part.
When 0 is set in W, a line of line width 1 is drawn. The connection drawing mask bit (COM) in
the rendering control register (RCLR) is used to select whether the linkage parts of bold lines are
drawn or not. When the starting and final coordinate points of a line segment match in bold line
drawing, nothing is drawn. In bold line drawing, specify the starting and final coordinate points in
the range of -2¹⁵ + (W + 2) ≤ x, y ≤ 2¹⁵ – 1 – (W + 2) in the logical space.
Rev. 1.00 Nov. 22, 2007 Page 1076 of 1692
REJ09B0360-0100