NAME

       exalpha - Creating and using 32 bit RGBA sprites. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       Example exalpha

DESCRIPTION

       This  program  demonstrates  how to use the 32 bit RGBA translucency functions to store an
       alpha channel along with a bitmap graphic.  Two images are loaded from disk. One  will  be
       used  for the background and the other as a sprite. The example generates an alpha channel
       for the sprite image, composing the 32 bit RGBA bitmap during runtime, and draws it at the
       position of the mouse cursor.

SEE ALSO

       BITMAP(3alleg4),      END_OF_MAIN(3alleg4),      SCREEN_H(3alleg4),     SCREEN_W(3alleg4),
       allegro_error(3alleg4),  allegro_init(3alleg4),  allegro_message(3alleg4),  blit(3alleg4),
       clear_keybuf(3alleg4),           create_bitmap(3alleg4),          destroy_bitmap(3alleg4),
       draw_trans_sprite(3alleg4),    drawing_mode(3alleg4),    font(3alleg4),     getb(3alleg4),
       getg(3alleg4),      getpixel(3alleg4),      getr(3alleg4),      install_keyboard(3alleg4),
       install_mouse(3alleg4), install_timer(3alleg4), keypressed(3alleg4), load_bitmap(3alleg4),
       makecol(3alleg4),       mouse_x(3alleg4),       mouse_y(3alleg4),       putpixel(3alleg4),
       rectfill(3alleg4), replace_filename(3alleg4), screen(3alleg4), set_alpha_blender(3alleg4),
       set_color_conversion(3alleg4),       set_color_depth(3alleg4),      set_gfx_mode(3alleg4),
       set_multiply_blender(3alleg4),   set_write_alpha_blender(3alleg4),    solid_mode(3alleg4),
       stretch_blit(3alleg4), textprintf_ex(3alleg4)