Derive Normal Z for Windows

A simple Windows program to derive blue (Z) channel for normal maps with only Red and Green channels.
Most game engines will ignore the blue channel of a normal map and derive it during runtime, to save memory. So many artists will use that third channel (blue) to pack other textures data. It works fine in the engine, but if you need to export it and use that texture in a DCC program it may not work as expected without the correct blue channel.

This app let's you reconstruct the Blue channel from the existing Red and Green channel and allow you to save the reconstructed normal map with all three channels intact.

Available on my github