Normal maps

I was playing around with normal maps yesterday for some game models and I was wondering about some things.

  1. Is there a limit. Can I bake an extremley high poly extremley detailed model on a cube? is there a limit of poly difference?

  2. I haven’t done normal maps in a while so I didn’t remember exactly how to do it so I followed this tutorial But in the tutorial they use glsl to view the model. Does that mean that the game I am using the model for has to be glsl or is there another way?

  3. Can I export this into a different engine. We are looking at using ogre 3d for our game and I was wondering if my maps are still valid in their engine?

Thanks :wink:

  1. No. You can do whatever you want.

  2. If you want to have normal mapping in the 3d view, yes, but otherwise, no. It will still work fine in renders, and other engines.

  3. It’s just an image; save it out to your hard drive, and you can do whatever you want with it.
    Please note, however, that for it to work correctly with some programs, you may have to flip the green channel, as blender is opposite of some programs in that respect.

So it will work in ogre… What about blender game engine?