Hi, I need to load floating point textures from disk for use in an openGL floating point texture for the first time and I have no Idea where to start. First of all I would like to save it from Photoshop (I am on a mac) or convert it afterwards without loosing precision. What format would be most suited for that? Also what c++ lib could load it for me? Maybe freeImage? Also when I want to create my texture in Photoshop, is it correct, that I have to go to Image > Mode and make it 16 or 32 bit channel to make it work? I hope someone can give me some hints on that topic! Thanks!

You can use OpenEXR to store 16 or 32 bit float data.

hey, thats exactly what I did.- FreeImage handles them very well too!