1al_set_shader_sampler(3)                              al_set_shader_sampler(3)
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NAME

6       al_set_shader_sampler - Allegro 5 API
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SYNOPSIS

9              #include <allegro5/allegro.h>
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11              bool al_set_shader_sampler(const char *name,
12                 ALLEGRO_BITMAP *bitmap, int unit)
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DESCRIPTION

15       Sets  a  texture sampler uniform and texture unit of the current target
16       bitmap’s shader.  The given bitmap must be a video bitmap.
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18       Different samplers should use different units.  The  bitmap  passed  to
19       Allegro’s drawing functions uses the 0th unit, so if you’re planning on
20       using the al_tex variable in your pixel shader as well as another  sam‐
21       pler,  set  the other sampler to use a unit different from 0.  With the
22       primitives addon, it is possible to free up the  0th  unit  by  passing
23       NULL  as  the  texture  argument to the relevant drawing functions.  In
24       this case, you may set a sampler to use the 0th unit and thus  not  use
25       al_tex (the al_use_tex variable will be set to false).
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27       Returns  true on success.  Otherwise returns false, e.g. if the uniform
28       by that name does not exist in the shader.
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SINCE

31       5.1.0
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SEE ALSO

34       al_use_shader(3)
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38Allegro reference manual                              al_set_shader_sampler(3)
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