seems I never be able to get it working. The only way I get specular is using material panel’s specular, intensity and hardness all work well but if I want to use a specular map, it just doesn’t work. No matter how I toggle material’s spec settings or influence spec settings, blender just doesn’t use spec map. While I got no problem in diffuse, either material or texture, both work well. Any thing I ridiculously missed? Thanks.
edit: In influence the specular map’s color & hardness both work, just intensity doesn’t work which means if I set material panel’s spec intensity to 0, spec is gone, no matter how I mess with the texture’s spec intensity.