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set_write_alpha_blender(3alleg4) [centos man page]

set_write_alpha_blender(3alleg4)				  Allegro manual				  set_write_alpha_blender(3alleg4)

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(3alleg4), draw_trans_sprite(3alleg4), drawing_mode(3alleg4), exalpha(3alleg4), extrans(3alleg4) Allegro version 4.4.2 set_write_alpha_blender(3alleg4)

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set_write_alpha_blender(3alleg4)				  Allegro manual				  set_write_alpha_blender(3alleg4)

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(3alleg4), draw_trans_sprite(3alleg4), drawing_mode(3alleg4), exalpha(3alleg4), extrans(3alleg4) Allegro version 4.4.2 set_write_alpha_blender(3alleg4)
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