The devices, queues, and other entities in Vulkan are represented by Vulkan objects.
Vulkan的对象包含设备，队列和其他的实体。
At the API level, all objects are referred to by handles.
在API的层级，所有的对比通过句柄被访问。
There are two classes of handles, dispatchable and nondispatchable.
有两种类型的句柄，可以分发和不可以分发。
Dispatchable handle types are a pointer to an opaque type.
可以分发的句柄类型是一个模糊类型的指针。
This pointer may be used by layers as part of intercepting API commands, and thus each API command takes a dispatchable type as its first parameter.
这个指针被layer用来拦截API命令，和每一个API的命令可以使用disapatchable类型作为它的第一个参数。
Each object of a dispatchable type must have a unique handle value during its lifetime.
每一个dispatchable的对象整个生命周期只能有唯一的句柄。
Non-dispatchable handle types are a 64-bit integer type whose meaning is implementation dependent.
non-dispatcable句柄类型是实现独立的64位整形类型。
If the privateData feature is enabled for a VkDevice, each object of a non-dispatchable type created on that device must have a handle value that is unique among objects created on that device, for the duration of the object’s lifetime.
如果VkDevice的privateData的特性启用的，每一个non-dispatchable类型的必须有一个唯一的句柄。
Otherwise, non-dispatchable handles may encode object information directly in the handle rather than acting as a reference to an underlying object, and thus may not have unique handle values.
否则，non-dispatchable句柄可以直接在句柄中编码对象信息而不是作为隐含对象的应用，和因此无需句柄值。
If handle values are not unique, then destroying one such handle must not cause identical handles of other types to become invalid, and must not cause identical handles of the same type to become invalid if that handle value has been created more times than it has been destroyed.
如果句柄不是唯一的，销毁一个这样的句柄不应该会引起其他类型的无效，和不应该引起同类型完全相同的句柄无效。
All objects created or allocated from a VkDevice (i.e. with a VkDevice as the first parameter) are private to that device, and must not be used on other devices.
一个VkDevice分配或创建的对象仅仅对该设备有效，不能用于其他的设备。
