Method dot

plugins/rendermax/renderer_opengl.hpp:243–246

        return r<=other.r && g<=other.g && b<=other.b;
    }
    float dot(const rgbf& other) const
    {
        return r*other.r+g*other.g+b*other.b;
    }
    rgbf pow(const float exp) const
    {
        return rgbf(std::pow(r, exp), std::pow(g, exp), std::pow(b, exp));