makecol_depth - Converts an RGB value into the specified pixel format. Allegro
game programming library.
#include <allegro.h>
int makecol_depth(int color_depth, int r, int g, int
b);
Converts colors from a hardware independent format (red, green, and blue values
ranging 0-255) to the pixel format required by the specified color depth.
Example:
/* Compose the green color for 15 bit color depth. */
int green_15bit = makecol_depth(15, 0, 255, 0);
Returns the requested RGB triplet in the specified color depth.
makeacol(3), makecol(3), makecol8(3),
makecol15_dither(3), rgb_map(3), set_color_depth(3)