gl_setdisplaystart(3)  Svgalib User Manual  gl_setdisplaystart(3)

NAME
       gl_setdisplaystart  - set the start of the screen are dis-
       played

SYNOPSIS
       #include <vgagl.h>

       vga gl_setdisplaystart(int x, int y);

DESCRIPTION
       Set the physical display start address to the pixel at (x,
       y).

       Can  be  used for hardware scrolling, or for page flipping
       (e.g.  setdisplaystart(0, HEIGHT) displays from the second
       page).  Make  sure the scanline width (BYTEWIDTH) in bytes
       of the  current  context  corresponds  with  the  physical
       screen.

       Note  also  that  the  display start cannot be set to com-
       pletely arbitrary points, see vga_setdisplaystart(3).

SEE ALSO
       svgalib(7),   vgagl(7),   svgalib(5),   threedkit(7),
       testgl(1),    vga_setdisplaystart(3),    gl_copyscreen(3),
       gl_setscreenoffset(3).

AUTHOR
       This manual page was edited by Michael Weller <eowmob@exp-
       math.uni-essen.de>.  The  exact  source  of the referenced
       demo 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 Hanemaayer <H.Hanemaayer@inter.nl.net>.

       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.

Svgalib (>= 1.2.11)         2 Aug 1997                          1