Synchronization is a critical but often misunderstood part of the Vulkan API. The new VK_KHR_synchronization2 extension includes several improvements to make Vulkan Synchronization easier to use, without major changes to the fundamental concepts described below. We’ll highlight key differences introduced with Synchronization2 throughout the blog.

The newly released VK_KHR_synchronization2 extension brings extensive improvements to Vulkan queue submission, events, and pipeline barriers resulting in API significant usability enhancements for developers. Synchronization2 highlights include: Data for semaphores and command buffers is passed in arrays of structures, rather than in separate arrays spread across multiple structures, to streamline queue submissions. Barrier pipeline stage masks