APIs such as Vulkan can be used for many different purposes, such as mathematical and physical computations, image or video stream processing, and data visualizations. But the main purpose Vulkan was designed for and its most common usage is efficiently rendering 2D and 3D graphics. And when our application generates an image, we usually would like to display it on screen.
At first, it may seem surprising that the core of the Vulkan API doesn't allow for displaying generated images in the application's window. This is because Vulkan is a portable, cross-platform API but, unfortunately, there is no universal standard for presenting images on screen in different operating systems because they have drastically different architectures and standards.
That's why a set of extensions was introduced for the Vulkan API which allow us to present generated images in an application's window....
