Sweeney says he added the texture to the first version of Unreal Engine all the way back in 1995. "This is Unreal Engine's default texture," he said. "I imported it into Unreal Engine 1 in 1995 ...
He explained that DirectStorage can help with Virtual Textures (VT) once the next-gen storage API gets proper support from Nanite, which is Unreal Engine 5's virtualized geometry system.