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al_set_shader_sampler(3) Library Functions Manual al_set_shader_sampler(3) NAME al_set_shader_sampler - Allegro 5 API SYNOPSIS #include <allegro5/allegro.h> bool al_set_shader_sampler(const char *name, ALLEGRO_BITMAP *bitmap, int unit) DESCRIPTION Sets a texture sampler uniform and texture unit of the current target bitmap's shader. The given bitmap must be a video bitmap. Different samplers should use different units. The bitmap passed to Alle- gro's drawing functions uses the 0th unit, so if you're planning on using the al_tex variable in your pixel shader as well as another sampler, set the other sampler to use a unit different from 0. With the primitives ad- don, it is possible to free up the 0th unit by passing NULL as the texture argument to the relevant drawing functions. In this case, you may set a sampler to use the 0th unit and thus not use al_tex (the al_use_tex vari- able will be set to false). Returns true on success. Otherwise returns false, e.g. if the uniform by that name does not exist in the shader. SINCE 5.1.0 SEE ALSO al_use_shader(3) Allegro reference manual al_set_shader_sampler(3)
NAME | SYNOPSIS | DESCRIPTION | SINCE | SEE ALSO
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