that is, i maked bump mapping work at the end!
if you want to use it , you need to know this:
1) the file to apply the bump has to be in directx format,
if it is in 3ds, it give errors
2)the bump only show when a light it is near the surface ant pointing to it
3)the bump .bmp has to be done correctly, in this web page there is a map plugin for photoshop for make the bumps
[url]
http://developer.nvidia.com/view.asp?IO=ps_texture_compression_plugin[/url]
4)and at least,i see that in terms of performance, it is better to aply light mapping,and the effect is similar.
