Resetting fences

Semaphores are automatically reset. But when a fence becomes signaled, it is the application's responsibility to reset the fence back to the un-signaled state.

How to do it...

1. Store the handle of a created logical device in a variable of type VkDevice named logical_device.

 

2. Create a vector variable named fences. It should contain elements of type VkFence. In the variable, store the handles of all fences that should be reset.
3. Call vkResetFences( logical_device, static_cast<uint32_t>(fences.size()), &fences[0] ) and provide the logical_device variable, the number of elements in the fences vector and a pointer to the first element of the fences vector.
4. Make sure the function succeeded by checking if the value returned by the call was equal to VK_SUCCESS.

How it works...

When we want to know when submitted commands are finished, we use a fence. But we can't provide a fence that was already signaled. We must first reset it, which means that we change its state from signaled...