lighttroupe/luz

class ActorEffectPixelStorm < ActorEffect
    title                "Pixel Storm"
    description "Displace pixels in random directions."

    categories :color

    setting 'amount', :float, :default => 0.0..1.0, :shader => true, :digits => 3

    CODE = "
        texture_st.s += ((0.5 - rand(texture_st.st)) * amount);
        texture_st.t += ((0.5 - rand(texture_st.ts)) * amount);
    "

    def render
        return yield if amount == 0.0

        with_fragment_shader_snippet(CODE, self) {
            yield
        }
    end
end