makecol83alleg
Converts an rgb value into a display dependent pixel format. allegro game programming library.
Usage
#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);
Overview
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.
Releases
4 releases since Debian 3.1 (Sarge); the text changed 2 times.