BC6H, BC7 and Blender Compatilibity.

[TheIronLefty]

BC6H and BC7 textures encoded with Compressonator do not load in any Blender's version in EEVEE, while those encoded with Nvidia Texture Tools work fine. Unsure whether to report this as a Blender or Compressonator issue.

error in Blender console:
Unable to find a suitable DXT compression, falling back to uncompressed.
IMB_ibImageFromMemory: unknown file-format

AMD Compressonator BC7

NVidia Texture Tools BC7