gpu_get_texfilter_ext

With this function you can check to see whether texture interpolation (linear interpolation) is enabled (returns true) or not (returns false) for a given shader sampler texture.

NOTE: On the HTML5 target, this function will only work with WebGL enabled.

Syntax:

gpu_get_texfilter_ext(sampler_id);

Returns:

Boolean

Example:

var s_tex = shader_get_sampler_index(shader_glass, "s_NoiseSampler");
if gpu_get_texfilter_ext(s_tex)
    {
    gpu_set_texfilter_ext(s_tex, false);
    }
else
    {
    gpu_set_texfilter_ext(s_tex, true);
    }

The above code checks to see if texture filtering is on or off for a specific sampler ID (stored in a local variable) and switches it accordingly.