Creating a fence

Fences, opposite to semaphores, are used to synchronize an application with commands submitted to the graphics hardware. They inform the application when the processing of a submitted work has been finished. But before we can use fences, we need to create them.

How to do it...

1. Take the created logical device and use its handle to initialize a variable of type VkDevice named logical_device.
2. Create a variable of type VkFenceCreateInfo named fence_create_info. Use the following values to initialize its members:
   • VK_STRUCTURE_TYPE_FENCE_CREATE_INFO value for sType
   • nullptr value for pNext
   • For flags use a 0 value if a created fence should be un-signaled, or a VK_FENCE_CREATE_SIGNALED_BIT value if a created fence should be signaled
3. Create a variable of type VkFence named fence that will hold the handle of a created fence.
4. Call vkCreateFence( logical_device, &fence_create_info, nullptr, &fence ) and provide the logical_device variable, a pointer to the fence_create_info variable...