vkGetDeviceMemoryCommitment

To determine the amount of lazily-allocated memory that is currently committed for a memory object, call:

void vkGetDeviceMemoryCommitment(
    VkDevice device,
    VkDeviceMemory memory,
    VkDeviceSize* pCommittedMemoryInBytes);

• device is the logical device that owns the memory.
• memory is the memory object being queried.
• pCommittedMemoryInBytes is a pointer to a VkDeviceSize value in which the number of bytes currently committed is returned, on success.

The implementation may update the commitment at any time, and the value returned by this query may be out of date.

The implementation guarantees to allocate any committed memory from the heapIndex indicated by the memory type that the memory object was created with.