In my case, I wanted to edit some HDR environment maps. They are a 360deg image of the environment used for 3D work. They need to be floating-point so that arbi

In my case, I wanted to edit some HDR environment maps. They are a 360deg image of the environment used for 3D work. They need to be floating-point so that arbitrary brightnesses can be captured and used to calculate the lighting in the scene correctly.