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set_write_alpha_blender
Langue: en
Version: version 4.2.2 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
Sommaire
NAME
set_write_alpha_blender - Enables the special alpha-channel editing mode. Allegro game programming library.SYNOPSIS
#include <allegro.h>void set_write_alpha_blender();
DESCRIPTION
Enables the special alpha-channel editing mode, which is used for drawing alpha channels over the top of an existing 32-bit RGB sprite, to turn it into an RGBA format image. After calling this function, you can set the drawing mode to DRAW_MODE_TRANS and then write draw color values (0-255) onto a 32-bit image. This will leave the color values unchanged, but alter the alpha to whatever values you are writing. After enabling this mode you can also use draw_trans_sprite() to superimpose an 8-bit alpha mask over the top of an existing 32-bit sprite.SEE ALSO
set_alpha_blender(3), draw_trans_sprite(3), drawing_mode(3), exalpha(3), extrans(3)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre