Even when a device is capable to allocate a buffer with a certain size
it can still fail the allocation due to driver internals. This could be that
the memory area doesn't support the required flags or fragmentation.
This PR changes downloading GPU textures to CPU to use at max buffer
sizes of 2GB. Larger textures will be split over multiple buffers.
Pull Request: https://projects.blender.org/blender/blender/pulls/145568
41bcdb26dc