Download the blender-hdri-gen.zip from Releases and install it using Blender's built-in add-on installer, located in Edit > Preferences > Add-ons > Install... and select the .zip archive. Afterwards ...
A Python script for Blender that converts a single 360° panoramic HDRI image into six individual images, formatted for use in an Xcode Cube Texture Set. This script automates the process of rendering ...