Creating a command pool

Command pools are objects from which command buffers acquire their memory. Memory itself is allocated implicitly and dynamically, but without it command buffers wouldn't have any storage space to hold the recorded commands. That's why, before we can allocate command buffers, we first need to create a memory pool for them.

How to do it...

1. Create a variable of type VkDevice named logical_device and initialize it with a handle of a created logical device.

 

2. Take the index of one of the queue families requested for the logical device. Store this index in a variable of type uint32_t named queue_family.
3. Create a variable of type VkCommandPoolCreateInfo named command_pool_create_info. Use the following values for the members of this variable:
   • VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO value for sType
   • nullptr value for pNext
   • Bit field indicating selected parameters of type VkCommandPoolCreateFlags for flags
   • queue_family variable for queueFamilyIndex
4. Create a variable of type VkCommandPool...