integrateTexture

Color integrateTexture(unsigned char *pixels, int width, int height, int depth, float s, float t, int deltas, int deltat){
    //return getTexel(pixels, width, height, depth, (int)std::floor(s), (int)std::floor(t));
    int i, j, s_, t_;
    s_ = (int)std::floor(s);
    t_ = (int)std::floor(t);
    Color buffer = init_color(0.f, 0.f, 0.f);
    for (i = s_; i <= deltas; i++)
    {
        for (j = t_; j <= deltat; j++)
        {
            buffer = add_color_color(getTexel(pixels, width, height, depth, i, j), buffer);
        }
    }
    return(buffer * (1/(deltas * deltat)));
}