DOKK / manpages / debian 11 / allegro4-doc / set_color_depth.3alleg4.en
set_color_depth(3alleg4) Allegro manual set_color_depth(3alleg4)

set_color_depth - Sets the global pixel color depth. Allegro game programming library.

#include <allegro.h>

void set_color_depth(int depth);

Sets the pixel format to be used by subsequent calls to set_gfx_mode() and create_bitmap(). Valid depths are 8 (the default), 15, 16, 24, and 32 bits. Example:


set_color_depth(32);
if (set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0) != 0) {
abort_on_error("Couldn't set a 32 bit color resolution");
}
Note that the screen color depth won't change until the next successful call to set_gfx_mode().

get_color_depth(3alleg4), set_gfx_mode(3alleg4), set_color_conversion(3alleg4), makecol(3alleg4), getr(3alleg4), desktop_color_depth(3alleg4)

version 4.4.3 Allegro