44 lines
1.3 KiB
Groff
44 lines
1.3 KiB
Groff
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.TH vga_setlogicalwidth 3 "27 July 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
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.SH NAME
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vga_setlogicalwidth \- set the logical scanline width
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.SH SYNOPSIS
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.B "#include <vga.h>"
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.BI "void vga_setlogicalwidth(int " l );
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.SH DESCRIPTION
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Set the logical scanline width to
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.I l
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bytes. It must be a multiple of 8. Only changes the VGA register, drawing
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functions don't take it into account. The logical scan line width is the offset
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between points above each other in consecutive lines. Note that for some cards and
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graphics modes a
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multiple of 8 will not suffice to ensure a proper video timing. You should
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only set
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.I l
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to multiples of the value returned for that graphics mode by
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.BR vga_modeinfo (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 libvga.config (5),
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.BR vga_modeinfo (3),
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.BR vga_displaystart (3),
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.BR vga_claimvideomemory (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 function 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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