al_set_shader_int_vector(3)

NAME

al_set_shader_int_vector - Allegro 5 API

SYNOPSIS

    #include <allegro5/allegro.h>
    bool al_set_shader_int_vector(const char *name,
       int num_components, const int *i, int num_elems)

DESCRIPTION

Sets an integer vector array uniform of the current target bitmap's shader. The `num_components' parameter can take one of the values 1, 2, 3 or 4. If it is 1 then an array of `num_elems' integer elements is added. Otherwise each added array element is assumed to be a vector with 2, 3 or 4 components in it.

For example, if you have a GLSL uniform declared as uniform ivec3 flowers[4] or an HLSL uniform declared as uniform int3 flowers[4], then you'd use this function from your code like so:

    int flowers[4][3] =
    {
       {1, 2, 3},
       {4, 5, 6},
       {7, 8, 9},
       {2, 5, 7}
    };
    al_set_shader_int_vector("flowers", 3, (int*)flowers, 4);

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_set_shader_float_vector(3), al_use_shader(3)