Check the following device limits (see my database):
- maxImageArrayLayers
- maxImageDimension1D
- maxImageDimension2D
- maxImageDimension3D
- maxImageDimensionCube
You won’t find hardware that supports 128kx128k textures. For huge textures take a look at partial residency (using sparse bindings). But even with these you won’t be able to go beyond the limits reported by the above caps.