vertical

Description:

public void vertical (Format format, void* src_lines, void* dest, uint dest_offset, uint width)

Vertically combine width pixels in the lines in src_lines to dest.

dest is the location of the target line at dest_offset and srcs are the input lines for dest_offset.

this	a Scaler
format	a Format for `srcs` and `dest`
src_lines	source pixels lines
dest	destination pixels
dest_offset	the vertical destination offset
width	the number of pixels to scale