49 lines
1.3 KiB
Groff
49 lines
1.3 KiB
Groff
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.TH gl_setdisplaystart 3 "2 Aug 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
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.SH NAME
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gl_setdisplaystart \- set the start of the screen are displayed
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.SH SYNOPSIS
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.B #include <vgagl.h>
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.BI "vga gl_setdisplaystart(int " x ", int " y );
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.SH DESCRIPTION
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Set the physical display start address to the pixel at
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.RI ( x ", " y ).
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Can be used for hardware scrolling, or for page flipping
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(e.g.
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.B setdisplaystart(0, HEIGHT)
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displays from the second
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page). Make sure the scanline width
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.RB ( BYTEWIDTH )
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in bytes
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of the current context corresponds with the physical
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screen.
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Note also that the display start cannot be set to completely arbitrary points, see
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.BR vga_setdisplaystart (3).
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.SH SEE ALSO
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.BR svgalib (7),
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.BR vgagl (7),
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.BR svgalib.conf (5),
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.BR threedkit (7),
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.BR testgl (1),
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.BR vga_setdisplaystart (3),
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.BR gl_copyscreen (3),
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.BR gl_setscreenoffset (3).
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.SH AUTHOR
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This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The
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exact source of the referenced demo as well as of the original documentation is
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unknown.
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It is very likely that both are at least to some extent are due to
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Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
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Occasionally this might be wrong. I hereby
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asked to be excused by the original author and will happily accept any additions or corrections
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to this first version of the svgalib manual.
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