vga_copytoplane - copy linear pixmap to some planes of VGA 16 color mode video
void vga_copytoplane(unsigned char *virtual, int
pitch, int voffset, int vpitch, int
w, int h, int plane);
Similar to vga_copytoplanar16
(3), but copies only a subset of the four
16-color mode planes (plane
should be in the range 0 .. 15). The bits
set in plane
select which of the four 16-color mode planes to modify.
Assumes pixels stored in consecutive bytes ranging from 0 to 15 in the virtual
Copies part of a linear virtual screen in system memory at *virtual
VGA 16 mode video memory. pitch
is the logical width of the virtual
screen (in pixels (which are one byte large)), voffset
is the address
offset into video memory, vpitch
is the logical scanline width of the
screen. (w, h)
is the size of the area to
copy in pixels (width
must be multiple of 4).
This manual page was edited by Michael Weller
<firstname.lastname@example.org>. The exact source of the referenced
function as well as of the original documentation is unknown.
It is very likely that both are at least to some extent are due to Harm
Occasionally this might be wrong. I hereby asked to be excused by the original
author and will happily accept any additions or corrections to this first
version of the svgalib manual.