title: Should I call `vkMapMemory` each time I write to a buffer?
body: <p>Are there any benefits to using a single <code>vkMapMemory</code>, a <code>memset</code>s for each write, and a single <code>vkUnmapMemory</code> as opposed to using a <code>vkMapMemory</code>, <code>memset</code>, and <code>vkUnmapMemory</code> for each write to a buffer?</p>