Function queries in vkDeviceCreate

[solidpixel]

On device create we currently use the chain vkGetInstanceProcAddr() function pointer, rather than the functions the layer has already queried when when creating the Instance object. Why - surely they should be the same because the layering was already established when the instance was created?

There might be a valid reason for this - need to do some reading, but it seems unnecessary code and complexity.

[solidpixel]

It sounds like the reason for the vkCreateDevice chain getting a repeat of the getInstanceProcAdd function dates back to device-layers which can't intercept vkCreateInstance to stash the function pointer then. For instance-layers, we can just use the stashed function pointers we already have, which is neater than refetching them.