BMP maps are used to enhance the details of the texture that you are using on an object.

They basically consist of white and Grey lines to enhance the areas, they are very simple to make all you have to do is copy the image that you use for your main texture.

Insert the image into Photoshop, adjust the levels so that the low lights and the highlights stand out more.

















Then you simply add the filter, high pass. this makes the image look like it has been carved into metal. Removing all the different colors and just showing all the small details.




















BMP Map




















As you can see from the image above you cant really see that much, but yo can see hairline details and these when applied to the map on the texture will make the details stand out from the flat surface.















Mine has now shown up tons of detail, this may because of the settings that I used with the high pass, not making the lines strong enough. But it does make the texture look more human, instead of just a flat wrapping.