I have a cube map texture which defines a surrounding, however I need to pass it to a program which only works with latitude/longitude maps. I am really at lost here on how to d
Project changed name to libcube2cyl. Same goodness, better working examples both in C and C++.
Now also available in C.
I happened to solve the exact same problem as you described.
I wrote this tiny C++ lib called "Cube2Cyl", you can find the detailed explanation of algorithm here: Cube2Cyl
Please find the source code from github: Cube2Cyl
It is released under MIT licence, use it for free!