Although the program architecture of Prepar3Dv4 has moved from 32-bit to 64-bit, one should not henceforth assume that its associated environment (sky, cloud, sea, ground) texture data would have been upgraded accordingly.

Actually they are largely the same as those used in previous P3D versions, and in FSX as well.   Only a limited number of files I found so far have been changed or converted into a different format.

This is good because it means that it is possible for me to restore my previously saved enhanced environment texture backup (put together from different addons) onto P3Dv4 now, without waiting until those addon programs becoming version 4 compatible later. Continue reading →