   How to create a normal map
  Hi,I'm want to use bump mapped texture on my program but I need to make the bump texture and the normal map. But i don't know how to do it.I just have my texture file (.jpg).   
  if you have photoshop you can just convert the image to grayscale and then use the nvidia normal map plugin:http://developer.nvidia.com/object/photoshop_dds_plugins.htmlYou can also use the trial version of crazybump:http://www.crazybump.com/;  Thanks crazy bumps is great !   