Hello everyone!
Today everything 3D objects designed to GameGuru should pay normal-maps that is a second layer of texture.
For that I share here a DLL file-Normal Maps.
Just install it in "... \ Paint.NET \ Effects \"
Then open your texture with Paint.NET eg "mytexture_D.dds"
Made "Effects" and look for "Normal Maps Plus".
Adjust the image to your liking.
Save your texture under "mytexture_N.dds."
Enjoy =D !
