suse man page for mask_color_8

MASK_COLOR_8(3alleg4)                                             Allegro manual                                             MASK_COLOR_8(3alleg4)

NAME
       MASK_COLOR_8,  MASK_COLOR_15,  MASK_COLOR_16,  MASK_COLOR_24, MASK_COLOR_32 - Constant representing the mask value in sprites. Allegro game
       programming library.

SYNOPSIS
       #include <allegro.h>

       #define MASK_COLOR_8 0

       #define MASK_COLOR_15 (5.5.5 pink)

       #define MASK_COLOR_16 (5.6.5 pink)

       #define MASK_COLOR_24 (8.8.8 pink)

       #define MASK_COLOR_32 (8.8.8 pink)

DESCRIPTION
       Constants representing the colors used to mask transparent sprite pixels for each color depth. In 256-color resolutions this is  zero,  and
       in truecolor modes it is bright pink (maximum red and blue, zero green).

SEE ALSO
       bitmap_mask_color(3alleg4), makecol(3alleg4), draw_sprite(3alleg4), masked_blit(3alleg4)

Allegro                                                            version 4.4.2                                             MASK_COLOR_8(3alleg4)