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Man Pages


Manual Reference Pages  -  MAKECOL8 (3)

NAME

makecol8, makecol15, makecol16, makecol24, makecol32 - Converts an RGB value into a display dependent pixel format. Allegro game programming library.

CONTENTS

Synopsis
Description
See Also

SYNOPSIS

#include <allegro.h>

int makecol8(int r, int g, int b);

int makecol15(int r, int g, int b);

int makecol16(int r, int g, int b);

int makecol24(int r, int g, int b);

int makecol32(int r, int g, int b);

DESCRIPTION

These functions convert colors from a hardware independent form (red, green, and blue values ranging 0-255) into various display dependent pixel formats. Converting to 15, 16, 24, or 32-bit formats only takes a few shifts, so it is fairly efficient. Converting to an 8-bit color involves searching the palette to find the closest match, which is quite slow unless you have set up an RGB mapping table (see below). Example:

   /* 16 bit color version of green. */
   int green_color = makecol16(0, 255, 0);

RETURN VALUE

Returns the requested RGB triplet in the specified color depth.

SEE ALSO

makeacol32(3), makecol(3), makecol_depth(3), makecol15_dither(3), rgb_map(3), bestfit_color(3), set_color_depth(3), exrgbhsv(3)
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Allegro MAKECOL8 (3) version 4.4.2

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