Vulkan Cookbook

How it works...

Fences are destroyed using the vkDestroyFence() function, like this:

if( VK_NULL_HANDLE != fence ) { 
  vkDestroyFence( logical_device, fence, nullptr ); 
  fence = VK_NULL_HANDLE; 
}

We don't need to check if a value of the fence variable is not equal to the VK_NULL_HANDLE value because destruction of a null handle will be ignored by the driver. But, we do this to skip an unnecessary function call.

But, we can't destroy an invalid object - an object that wasn't created on a given logical device or that has already been destroyed. That's why we assign a VK_NULL_HANDLE value to the variable with the fence's handle.