Apple's Automatic Reference Counting automatically releases
the Metal objects returned by VK_EXT_metal_objects.
The fetchDependencies script now applies
Templates/Vulkan-Headers/VK_EXT_metal_objects-unret.gitdiff
to add an __unsafe_unretained ownership qualifier to the
Metal object declarations in vulkan_metal.h.
This should be a temporary patch until the VK_EXT_metal_objects
extension can be properly modified.
11a3adcd26