SH7265 Datasheet, PDF (1555/2024 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 28 2D Graphics Engine (2DG)
• Determining the starting address (Da) of the destination set area
DA
DT
DL
Da
Full resize set area
on destination side
Partial resize set area
on destination side
DH
DGP
Figure 28.43 Determination of Starting Address (Da) of Destination Set Area
[Definition]
Da: Starting address for writing to the destination area for partial resizing
DA: Starting address for writing to the destination area for full resizing
DGP: Line pitch in the destination area (a 64-byte boundary)
DGP = ROUNDUP (byte count per pixel) × DH/64 bytes) × 64 bytes
Note: ROUNDUP in the formula indicates rounding up, i.e. taking the nearest integer above the
fractional component.
DT: The number of lines from the starting line for the vertical destination area for full resizing,
to the top-edge pixel in the vertical destination area for partial resizing
DL: The number of pixels from the left-edge pixel for the horizontal destination area for full
resizing, to the left-edge (starting) pixel in the horizontal destination area for partial
resizing
Formula for calculating Da:
Da = DA + DGP × DT + DL × (byte count per pixel)
Rev. 1.00 Mar. 14, 2008 Page 1519 of 1984
REJ09B0351-0100