Reading texture from file to the CPP GPU TOP |cpp

Beginners
1

Hi there,

Any recommended tips/workflow and functions to use
to transfer int_8 per channel textures to the CPP GPU top.

What if my data are directx textures like DXT5YCOCG
or
YUV ( i know there is shader that convert to rgb).
any shortcuts\functions\guidelines i should know about ?

Thanks alot.