SH7764 Datasheet, PDF (1214/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 23 G2D
4. The direction to reference the source data can be selected by the SRCDIRX and SRCDIRY
bits.
5. The drawing direction can be selected by the DSTDIRX and DSTDIRY bits.
6. When αE = 1, the source data and ground data are alpha blended before drawing. When setting
αE = 1, also set the ROP code = H'CC (source copy). The A value in the ARGB format is not
alpha blended. The A value is drawn according to the source A value use (SAU) and A value
(AVALUE) bits in the rendering control register (RCLR). Alpha blending is valid only in 16-
bit/pixel drawing.
7. 16 raster operations are possible. The A value in the ARGB format is not subject to raster
operations. The A value is drawn according to the source A value use (SAU) and A value
(AVALUE) bits in the rendering control register (RCLR).
Note: System clipping or (relative) user clipping is performed when drawing a rectangle. Z
clipping is performed only at the center coordinates.
(d) Example
SS = 1
SSAR
Source stride
(TXS, TYS) LW + RW + 1
TH + BH + 1
2-dimensional source coordinates
X
(BXC - LW, BYC - TH)
Y
LW RW
(BXC, BYC)
TH
BH
(BXC + RW, BYC + BH)
Rendering coordinates
SS = 0
Base
Address
LW + RW + 1
TH + BH + 1
Rev. 1.00 Nov. 22, 2007 Page 1158 of 1692
REJ09B0360-0100